A method for controlling active power of a power grid with energy storage power station and controllable load participating in regulation

Abstract

The present invention discloses a method, device and storage medium for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation. The method comprises: calculating active sensitivity of the active power of external interconnection lines and active nodes of a power grid to a safe and stable power transmission channel; determining the safe operation constraints of the power grid; calculating the active adjustable space; constructing a first-stage optimization objective function, taking into account the active adjustable space and the safe operation constraints of the power grid, and calculating the active command values ​​of the new energy station and the conventional power plant after the first-stage optimization; updating the active adjustable space; constructing a second-stage optimization objective function, taking into account the updated active adjustable space and the safe operation constraints of the power grid, and calculating the active command values ​​of the new energy power station, the energy storage power station and the controllable load after the second-stage optimization; the present invention can improve the new energy consumption capacity by utilizing the regulation capability of the energy storage power station and the controllable load on the basis of ensuring the safe and economic operation of the power grid in the power market environment.

Description

Technical Field

[0001] The invention relates to an energy storage power station and a controllable load participating in the regulation of a power grid active power control method, belonging to the technical field of power grid dispatching control. Background Art

[0002] With the rapid increase in installed capacity of new energy, the random volatility of grid-connected power on the power generation side of the power grid has increased. In order to ensure the safety of the power grid and maximize the absorption of new energy, it is necessary to coordinate and control the power of different types of power plants in the entire network in real time. At the same time, with the large-scale grid connection of energy storage and controllable loads, new means are provided for further improving the absorption of new energy. However, there is no good real-time control strategy for how to further explore the adjustment space of energy storage power stations and controllable loads on the basis of complementary and coordinated control of various power generation resources such as new energy power stations and conventional power plants to improve the absorption level of new energy, and at the same time meet the needs of market-oriented transactions and promote the active participation of energy storage power stations and controllable load entities in the absorption of new energy.

[0003] Patent ZL201811286328.9 discloses a "real-time power generation control optimization decision-making method for weight and constraint association adjustment" for the coordinated optimization and real-time control of multiple types of power sources for safe, economical and reliable operation of the power grid in the power market environment. It proposes a complementary coordinated optimization control strategy that comprehensively considers the power plant output's impact on power grid safety and stability, power plant economic and environmental performance, prediction performance, regulation performance and spot transaction execution, and maximizes the absorption of new energy while ensuring that power grid power generation control meets real-time, safety and economic and environmental requirements. However, it does not consider how energy storage power stations and controllable loads participate in real-time control, and does not solve the technical problem of how to make full use of the space and complementary characteristics of multiple power generation resources and explore the adjustment space of energy storage power stations and controllable loads to maximize the absorption of new energy while meeting the market transaction settlement requirements under the premise of meeting the safe operation of the power grid. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a method for controlling active power of a power grid in which energy storage power stations and controllable loads participate in regulation, which can further utilize the regulation capabilities of energy storage power stations and controllable loads to enhance the new energy consumption capacity while ensuring safe and economical operation of the power grid in an electricity market environment.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0006] In a first aspect, the present invention provides a method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation, comprising:

[0007] Determine the new energy power stations, conventional power plants, energy storage power stations, controllable loads and external communication lines that will participate in the coordinated control;

[0008] Taking the maximum sum of the active power command values ​​of the participating new energy stations and conventional power plants as the optimization goal, taking into account the active power adjustable space and the safe operation constraints of the power grid, the first-stage optimization objective function is constructed;

[0009] The active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads after the first stage optimization are calculated according to the first stage optimization objective function;

[0010] According to the active power command value of the new energy power station optimized in the first stage, the new energy power station with limited output is determined, and the new energy power station set Nz is generated; according to the active power adjustable space, the energy storage power station and the controllable load with active power adjustable space are determined, and the energy storage power station set Sz and the controllable load set Lz are generated;

[0011] Update the active power adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz;

[0012] Taking the energy storage power station set Sz and the controllable load set Lz as the optimization goal to maximize the active power consumption benefit of the new energy power station in the new energy power station set Nz, taking into account the updated active power adjustable space and the safe operation constraints of the power grid, the second stage optimization objective function is constructed;

[0013] The active power command values ​​of the new energy power station, energy storage power station and controllable load after the second stage optimization are calculated according to the second stage optimization objective function;

[0014] The new energy power stations, energy storage power stations and controllable loads in the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz are executed according to the active power instruction values ​​of the new energy power stations, energy storage power stations and controllable loads optimized in the second stage; the new energy power stations, energy storage power stations, controllable loads and conventional power plants outside the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz are executed according to the active power instruction values ​​optimized in the first stage.

[0015] Optionally, the acquisition of the active adjustable space includes:

[0016] Obtain the grid operation status data at time t0, and calculate the active power sensitivity of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable transmission channel based on the grid operation status data at time t0;

[0017] Obtain the safe and stable power transmission channel limit and determine the power grid safe operation constraints in combination with the active power sensitivity of the safe and stable power transmission channel;

[0018] Obtain the active power regulation limit of the external interconnection line and the active power regulation speed of the new energy power station, conventional power plant, energy storage power station and controllable load, and calculate the active power adjustable space of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load participating in the coordinated control.

[0019] Optionally, the calculation of the active sensitivity of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel includes:

[0020] If the topological structure of the power grid at time t1 has not changed relative to time t0, then for the power grid operation status data at time t0, the power flow calculation method is used to calculate the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid, as the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid at time t1;

[0021] Otherwise, the grid operation status data at time t0 is adjusted accordingly according to the change in the grid topology structure. For the adjusted grid operation status data, the power flow calculation method is used to calculate the active sensitivity of the active power of the grid active equipment to the safe and stable transmission channel of the grid, which is used as the active sensitivity of the active power of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable transmission channel of the grid at time t1.

[0022] Optionally, the calculation of the active adjustable space of the external connection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads participating in the coordinated control includes:

[0023] The upper limit P of the adjustable space for active power regulation of the external contact line i1 participating in the coordinated control at time t1 tl.i1.u and the lower limit P tl.i1.d for:

[0024] P tl.i1.u =min[P tl.i1.0 +v tl.i1.u (t1-t0-Δt-Δt tl.i1 ),P tl.i1.t.max ],i1∈TL1

[0025] P tl.i1.d =max[P tl.i1.0 -v tl.i1.d (t1-t0-Δt-Δt tl.i 1),P tl.i1.t.min ],i1∈TL1

[0026] Among them, TL1 is the external contact line set participating in the coordinated control, P tl.i1.0 、v tl.i1.u、v tl.i1.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the external contact line i1 at time t0; P tl.i1.t.max and P tl.i1.t.min are the maximum and minimum active power of the external tie line i1 at time t1, respectively; Δt is the estimated time from time t0 to the time when the active power instruction is issued, Δt tl.i1 It is the estimated value of the time from the time when the active power command is issued to the time when the external contact line i1 starts to respond to the active power command;

[0027] The upper limit P of the adjustable space for active power regulation of the new energy power station i2 participating in the coordinated control at time t1 n.i2.u and the lower limit P n.i2.d for:

[0028] P n.i2.u =min[P n.i2.0 +v n.i2.u (t1-t0-Δt-Δt n.i2 ),P n.i2.t.max ],i2∈N1

[0029] P n.i2.d =max[P n.i2.0 -v n.i2.d (t1-t0-Δt-Δt n.i2 ),P n.i2.t.min ],i2∈N1

[0030] Among them, N1 is the set of new energy power stations participating in the coordinated control, P n.i2.0 、v n.i2.u 、v n.i2.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the new energy power station i2 at time t0, wherein the upward active power regulation speed and the downward active power regulation speed are obtained according to the active power regulation speed; n.i2.t.max and P n.i2.t.min are the maximum and minimum active power of the new energy power station i2 at time t1; Δt n.i2 It is the estimated time from the time when the active power command is issued to the time when the new energy power station i2 starts responding to the active power command;

[0031] The upper limit P of the adjustable space of active power regulation of conventional power plant i3 participating in cooperative control at time t1 is g.i3.u and the lower limit P g.i3.d for:

[0032] P g.i3.u =min[P g.i3.0 +v g.i3.u (t1-t0-Δt-Δt g.i3 ),P g.i3.t.max ],i3∈G1

[0033] P g.i3.d =max[P g.i3.0 -v g.i3.d (t1-t0-Δt-Δt g.i3 ),P g.i3.t.min ],i3∈G1

[0034] Among them, G1 is the set of conventional power plants participating in the coordinated control, P g.i3.0 、v g.i3.u 、v g.i3.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the conventional power plant i3 at time t0; P g.i3.t.max and P g.i3.t.min are the maximum and minimum active power of conventional power plant i3 at time t1; Δt g.i3 It is the estimated time from the time when the active power command is issued to the time when the conventional power plant i3 starts to respond to the active power command;

[0035] The upper limit P of the adjustable space for active power regulation of the energy storage power station i4 participating in the coordinated control at time t1 l.i4.u and the lower limit P l.i4.d for:

[0036] P s.i4.u =min[P s.i4.0 +v s.i4.u (t1-t0-Δt-Δt s.i4 ),P s.i4.t.max ],i4∈S1

[0037] P s.i4.d =max[P s.i4.0 -v s.i4.d (t1-t0-Δt-Δt s.i4 ),P s.i4.t.min ],i4∈S1

[0038] Among them, S1 is the energy storage power station group participating in the coordinated control, P s.i4.0 、v s.i4.u 、v s.i4.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the energy storage power station i4 at time t0; P s.i4.t.max and P s.i4.t.min are the maximum and minimum active power of energy storage station i4 at time t1; Δt s.i4 It is the estimated value of the time from the time when the active power instruction is issued to the time when the energy storage power station i4 starts responding to the active power instruction;

[0039] The upper limit P of the adjustable space of the controllable load i5 participating in the coordinated control at time t1 is s.i5.u and the lower limit P s.i5.d for:

[0040] P l.i5.u =min[P l.i5.0 +v l.i5.u (t1-t0-Δt-Δt l.i5 ),P l.i5.t.max ],i5∈L1

[0041] P l.i5.d =max[P l.i5.0 -v l.i5.d (t1-t0-Δt-Δt l.i5 ),P l.i5.t.min ],i5∈L1

[0042] Among them, L1 is the controllable load set participating in the coordinated control, P l.i5.0 、v l.i5.u 、v l.i5.d are the active power, the upward active power regulation speed and the downward active power regulation speed of the controllable load i5 at time t0 respectively; P l.i5.t.max and P l.i5.t.min are the maximum and minimum active power of controllable load i5 at time t1 respectively; Δt l.i5 It is the estimated time from the time when the active power command is issued to the time when the controllable load i5 starts to respond to the active power command.

[0043] Optionally, the first-stage optimization objective function is:

[0044]

[0045] Among them, β g.i3 , β n.i2 are the comprehensive indicators of the control optimization decision of the conventional power plant i3 and the new energy power plant i2 at time t0; P g.i3.1 , P n.i2.1 They are respectively the active power command values ​​of the conventional power plant i3 and the new energy power plant i2 participating in the coordinated control at the time t0+T, and T is the real-time power generation control cycle.

[0046] Optionally, the power grid safe operation constraint is:

[0047]

[0048] Among them, L, G, N, and TL are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set participating in hot standby, L=L1+L2, G=G1+G2, N=N1+N2, TL=TL1+TL2, L2, G2, N2, and TL2 are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set not participating in coordinated control;

[0049] P l.j4.1 =Pl ′ .j4.0 ,j4∈L2

[0050] P g.j3.1 =P g ′ .j3.0 ,j3∈G2

[0051] P n.j2.1 =P n ′ .j2.0 ,j2∈N2

[0052] P tl.j1.1 =P t ′ l.j1.0 ,j1∈TL2

[0053] Among them, P s ′ .j4.0 , P g ′ .j3.0 , P n ′ .j2.0 , P t ′ l.j1.0 are the predicted active power values ​​of controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T; P l.j4.1 , P g.j3.1 , P n.j2.1 , P tl.j1.1 They are the active power command values ​​of the controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T respectively;

[0054] γ, f0, K f is the network loss coefficient, frequency and active static frequency characteristic coefficient of the network at time t0; f r is the rated frequency of the intranet, ε f It is the preset permissible deviation value of the intranet frequency;

[0055] P l.m4.1 , P g.m3.1 , P n.m2.1 , P tl.m1.1 P is the active power command value of the controllable load set participating in hot standby, conventional power plant set, new energy power station set, external interconnection line centralized controllable load m4, conventional power plant m3, new energy power station m2, and external interconnection line m1 at time t0+T; l.m4.0 , P g.m3.0 , P n.m2.0 , P tl.m1.0The active power command values ​​of the controllable load set participating in hot standby, the conventional power plant set, the new energy power station set, the external interconnection line centralized controllable load m4, the conventional power plant m3, the new energy power station m2, and the external interconnection line m1 at time t0;

[0056] SL is the set of safe and stable power transmission channels of the power grid. For the overload monitoring transmission equipment in the set of safe and stable power transmission channels of the power grid, P sl.d.lmt.OD , P sl.d.lmt.FD is equal to the value of , which is the active overload limit of the overload monitoring transmission equipment d calculated based on the unchanged power factor of the overload monitoring transmission equipment d at time t0; for the overload monitoring stable section where the safe and stable transmission channel of the power grid is concentrated, P sl.d.lmt.OD , P sl.d.lmt.FD They are respectively the positive stability limit and the reverse stability limit of the stable section d at time t0+T;

[0057] P sl.d.0 is the active power of the overload monitoring transmission equipment / stable section of the power grid safe and stable transmission channel under the power grid operation status data at time t0; S G.d.g.m3 , S N.d.n.m2 , S TL.d.tl.m1 They are respectively the active sensitivity of the grid-connected active power of the conventional power plant m3, the new energy power station m2, and the external tie line m1 to the safe and stable transmission channel of the power grid under the grid operation status data at time t0;

[0058] P g.m3.1.us , P g.m3.1.ds P is the upper and lower limits of conventional units in conventional power plant m3 after taking into account effective standby; g.m2.1.us , P g.m.1.ds P is the upper and lower limits of the new energy units in the new energy power station m2 after taking into account the effective standby; g.m1.1.us , P g.m1.1.ds The upper and lower limits of the transmission of the external contact line m1;

[0059] μ u , μ d They are respectively the active positive reserve capacity coefficient and negative reserve capacity coefficient at the preset time t0+T.

[0060] Optionally, the generating of the new energy power station set Nz includes: if the active power command value of the new energy power station i2 after the first stage optimization is less than the upper limit of the adjustable space P n.i2.u , then include it in the new energy power station set Nz; the generation of energy storage power station set Sz includes: if P s.i4.u -P s.i4.d >0, the energy storage power station i4 is included in the new energy power station Sz; the generation of the controllable load set Lz includes: if P l.i5.u -P l.i5.d>0, the controllable load i5 is included in the new energy power station Lz.

[0061] Optionally, updating the active adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz includes:

[0062] It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If so, the active power command values ​​of the new energy power stations other than the new energy power stations in the new energy power station set Nz are kept unchanged, and the active power command values ​​of the new energy stations after the first stage optimization in the new energy power station set Nz are taken as the lower limit to update the active power adjustable space.

[0063] Optionally, it is determined whether it is true that the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If it is false, the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads optimized in the first stage are executed as the final active power command values.

[0064] Optionally, the second stage optimization objective function is:

[0065]

[0066] Among them, M n.y2 is the unit power income of the additional active power of the new energy power station y2 in the new energy power station group Nz participating in the replacement transaction, C s.y5 is the unit power cost of energy storage station y5 participating in absorbing the active power of new energy station y2 in energy storage station set Sz, C l.y4 is the unit power cost of the controllable load y4 in the controllable load set Lz participating in absorbing the active power of the new energy power station y2, P n.y2.2 , P s.y5.2 , P l.y4.2 are the active power command values ​​after the second stage optimization of the new energy power station y2, the energy storage power station y5, and the controllable load y4, P n ′ .y2.1 It is the first-stage optimized active power command value of the new energy power station y2.

[0067] In a second aspect, the present invention provides an active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation, the device comprising:

[0068] Active node determination module, used to determine the new energy power stations, conventional power plants, energy storage power stations, controllable loads and external connection lines participating in the coordinated control;

[0069] The first-stage optimization module is used to take the maximum sum of the active power command values ​​of the participating new energy stations and conventional power plants as the optimization target, taking into account the active power adjustable space and the safe operation constraints of the power grid, and constructing the first-stage optimization objective function;

[0070] The first-stage optimization result acquisition module is used to calculate the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads after the first-stage optimization according to the first-stage optimization objective function;

[0071] The replacement transaction module is used to determine the new energy power station with limited output according to the active power command value of the new energy power station optimized in the first stage, and generate the new energy power station set Nz; determine the energy storage power station and controllable load with active power adjustable space according to the active power adjustable space, and generate the energy storage power station set Sz and the controllable load set Lz;

[0072] The second-stage optimization module is used to update the active adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz; the optimization goal is to maximize the active power consumption benefit of the energy storage power stations and controllable loads in the energy storage power station set Sz and the controllable load set Lz participating in the new energy power station set Nz, taking into account the updated active adjustable space and the safe operation constraints of the power grid, and constructing the second-stage optimization objective function;

[0073] The second-stage optimization result acquisition module is used to calculate the active power command values ​​of the new energy power station, energy storage power station and controllable load after the second-stage optimization according to the second-stage optimization objective function;

[0074] The active power instruction value execution module is used to execute the new energy power stations, energy storage power stations and controllable loads in the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz according to the active power instruction values ​​of the new energy power stations, energy storage power stations and controllable loads optimized in the second stage; and to execute the new energy power stations, energy storage power stations, controllable loads and conventional power plants outside the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz according to the active power instruction values ​​optimized in the first stage.

[0075] Optionally, the acquisition of the active adjustable space includes:

[0076] Obtain the grid operation status data at time t0, and calculate the active power sensitivity of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable transmission channel based on the grid operation status data at time t0;

[0077] Obtain the limit of safe and stable power transmission channel and determine the safe operation constraints of the power grid in combination with the active sensitivity of the safe and stable power transmission channel;

[0078] Obtain the active power regulation limit of the external interconnection line and the active power regulation speed of the new energy power station, conventional power plant, energy storage power station and controllable load, and calculate the active power adjustable space of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load participating in the coordinated control.

[0079] Optionally, the calculation of the active sensitivity of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel includes:

[0080] If the topological structure of the power grid at time t1 has not changed relative to time t0, then for the power grid operation status data at time t0, the power flow calculation method is used to calculate the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid, as the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid at time t1;

[0081] Otherwise, the grid operation status data at time t0 is adjusted accordingly according to the change in the grid topology structure. For the adjusted grid operation status data, the power flow calculation method is used to calculate the active sensitivity of the active power of the grid active equipment to the safe and stable transmission channel of the grid, which is used as the active sensitivity of the active power of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable transmission channel of the grid at time t1.

[0082] Optionally, the calculation of the active adjustable space of the external connection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads participating in the coordinated control includes:

[0083] The upper limit P of the adjustable space for active power regulation of the external contact line i1 participating in the coordinated control at time t1 tl.i1.u and the lower limit P tl.i1.d for:

[0084] P tl.i1.u =min[P tl.i1.0 +v tl.i1.u (t1-t0-Δt-Δt tl.i1 ),P tl.i1.t.max ],i1∈TL1

[0085] P tl.i1.d =max[P tl.i1.0 -v tl.i1.d (t1-t0-Δt-Δt tl.i 1),P tl.i1.t.min ],i1∈TL1

[0086] Among them, TL1 is the external contact line set participating in the coordinated control, P tl.i1.0 、v tl.i1.u、v tl.i1.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the external contact line i1 at time t0; P tl.i1.t.max and P tl.i1.t.min are the maximum and minimum active power of the external tie line i1 at time t1, respectively; Δt is the estimated time from time t0 to the time when the active power instruction is issued, Δt tl.i1 It is the estimated value of the time from the time when the active power command is issued to the time when the external contact line i1 starts to respond to the active power command;

[0087] The upper limit P of the adjustable space for active power regulation of the new energy power station i2 participating in the coordinated control at time t1 n.i2.u and the lower limit P n.i2.d for:

[0088] P n.i2.u =min[P n.i2.0 +v n.i2.u (t1-t0-Δt-Δt n.i2 ),P n.i2.t.max ],i2∈N1

[0089] P n.i2.d =max[P n.i2.0 -v n.i2.d (t1-t0-Δt-Δt n.i2 ),P n.i2.t.min ],i2∈N1

[0090] Among them, N1 is the set of new energy power stations participating in the coordinated control, P n.i2.0 、v n.i2.u 、v n.i2.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the new energy power station i2 at time t0, wherein the upward active power regulation speed and the downward active power regulation speed are obtained according to the active power regulation speed; n.i2.t.max and P n.i2.t.min are the maximum and minimum active power of the new energy power station i2 at time t1; Δt n.i2 It is the estimated time from the time when the active power command is issued to the time when the new energy power station i2 starts responding to the active power command;

[0091] The upper limit P of the adjustable space of active power regulation of conventional power plant i3 participating in cooperative control at time t1 is g.i3.u and the lower limit P g.i3.d for:

[0092] P g.i3.u =min[P g.i3.0 +v g.i3.u (t1-t0-Δt-Δt g.i3 ),P g.i3.t.max ],i3∈G1

[0093] P g.i3.d =max[P g.i3.0 -v g.i3.d (t1-t0-Δt-Δt g.i3 ),P g.i3.t.min ],i3∈G1

[0094] Among them, G1 is the set of conventional power plants participating in the coordinated control, P g.i3.0 、v g.i3.u 、v g.i3.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the conventional power plant i3 at time t0; P g.i3.t.max and P g.i3.t.min are the maximum and minimum active power of conventional power plant i3 at time t1; Δt g.i3 It is the estimated time from the time when the active power command is issued to the time when the conventional power plant i3 starts to respond to the active power command;

[0095] The upper limit P of the adjustable space for active power regulation of the energy storage power station i4 participating in the coordinated control at time t1 l.i4.u and the lower limit P l.i4.d for:

[0096] P s.i4.u =min[P s.i4.0 +v s.i4.u (t1-t0-Δt-Δt s.i4 ),P s.i4.t.max ],i4∈S1

[0097] P s.i4.d =max[P s.i4.0 -v s.i4.d (t1-t0-Δt-Δt s.i4 ),P s.i4.t.min ],i4∈S1

[0098] Among them, S1 is the energy storage power station group participating in the coordinated control, P s.i4.0 、v s.i4.u 、v s.i4.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the energy storage power station i4 at time t0; P s.i4.t.max and P s.i4.t.min are the maximum and minimum active power of energy storage station i4 at time t1; Δt s.i4 It is the estimated value of the time from the time when the active power instruction is issued to the time when the energy storage power station i4 starts responding to the active power instruction;

[0099] The upper limit P of the adjustable space of the controllable load i5 participating in the coordinated control at time t1 is s.i5.u and the lower limit P s.i5.d for:

[0100] P l.i5.u =min[P l.i5.0 +v l.i5.u (t1-t0-Δt-Δt l.i5 ),P l.i5.t.max ],i5∈L1

[0101] P l.i5.d =max[P l.i5.0 -v l.i5.d (t1-t0-Δt-Δt l.i5 ),P l.i5.t.min ],i5∈L1

[0102] Among them, L1 is the controllable load set participating in the coordinated control, P l.i5.0 、v l.i5.u 、v l.i5.d are the active power, the upward active power regulation speed and the downward active power regulation speed of the controllable load i5 at time t0 respectively; P l.i5.t.max and P l.i5.t.min are the maximum and minimum active power of controllable load i5 at time t1 respectively; Δt l.i5 It is the estimated time from the time when the active power command is issued to the time when the controllable load i5 starts to respond to the active power command.

[0103] Optionally, the first-stage optimization objective function is:

[0104]

[0105] Among them, β g.i3 , β n.i2 are the comprehensive indicators of the control optimization decision of the conventional power plant i3 and the new energy power plant i2 at time t0; P g.i3.1 , P n.i2.1 They are respectively the active power command values ​​of the conventional power plant i3 and the new energy power plant i2 participating in the coordinated control at the time t0+T, and T is the real-time power generation control cycle.

[0106] Optionally, the power grid safe operation constraint is:

[0107]

[0108] Among them, L, G, N, and TL are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set participating in hot standby, L=L1+L2, G=G1+G2, N=N1+N2, TL=TL1+TL2, L2, G2, N2, and TL2 are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set not participating in coordinated control;

[0109] P l.j4.1 =Pl ′ .j4.0 ,j4∈L2

[0110] P g.j3.1 =P g ′ .j3.0 ,j3∈G2

[0111] P n.j2.1 =P n ′ .j2.0 ,j2∈N2

[0112] P tl.j1.1 =P t ′ l.j1.0 ,j1∈TL2

[0113] Among them, P s ′ .j4.0 , P g ′ .j3.0 , P n ′ .j2.0 , P t ′ l.j1.0 are the predicted active power values ​​of controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T; P l.j4.1 , P g.j3.1 , P n.j2.1 , P tl.j1.1 They are the active power command values ​​of the controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T respectively;

[0114] γ, f0, K f is the network loss coefficient, frequency and active static frequency characteristic coefficient of the network at time t0; f r is the rated frequency of the intranet, ε f It is the preset permissible deviation value of the intranet frequency;

[0115] P l.m4.1 , P g.m3.1 , P n.m2.1 , P tl.m1.1 P is the active power command value of the controllable load set participating in hot standby, conventional power plant set, new energy power station set, external interconnection line centralized controllable load m4, conventional power plant m3, new energy power station m2, and external interconnection line m1 at time t0+T; l.m4.0 , P g.m3.0 , P n.m2.0 , P tl.m1.0The active power command values ​​of the controllable load set participating in hot standby, the conventional power plant set, the new energy power station set, the external interconnection line centralized controllable load m4, the conventional power plant m3, the new energy power station m2, and the external interconnection line m1 at time t0;

[0116] SL is the set of safe and stable power transmission channels of the power grid. For the overload monitoring transmission equipment in the set of safe and stable power transmission channels of the power grid, P sl.d.lmt.OD , P sl.d.lmt.FD is equal to the value of , which is the active overload limit of the overload monitoring transmission equipment d calculated based on the unchanged power factor of the overload monitoring transmission equipment d at time t0; for the overload monitoring stable section where the safe and stable transmission channel of the power grid is concentrated, P sl.d.lmt.OD , P sl.d.lmt.FD They are respectively the positive stability limit and the reverse stability limit of the stable section d at time t0+T;

[0117] P sl.d.0 is the active power of the overload monitoring transmission equipment / stable section of the power grid safe and stable transmission channel under the power grid operation status data at time t0; S G.d.g.m3 , S N.d.n.m2 , S TL.d.tl.m1 They are respectively the active sensitivity of the grid-connected active power of the conventional power plant m3, the new energy power station m2, and the external tie line m1 to the safe and stable transmission channel of the power grid under the grid operation status data at time t0;

[0118] P g.m3.1.us , P g.m3.1.ds P is the upper and lower limits of conventional units in conventional power plant m3 after taking into account effective standby; g.m2.1.us , P g.m.1.ds P is the upper and lower limits of the new energy units in the new energy power station m2 after taking into account the effective standby; g.m1.1.us , P g.m1.1.ds The upper and lower limits of the transmission of the external contact line m1;

[0119] μ u , μ d They are respectively the active positive reserve capacity coefficient and negative reserve capacity coefficient at the preset time t0+T.

[0120] Optionally, the generating of the new energy power station set Nz includes: if the active power command value of the new energy power station i2 after the first stage optimization is less than the upper limit of the adjustable space P n.i2.u , then include it in the new energy power station set Nz; the generation of energy storage power station set Sz includes: if P s.i4.u -P s.i4.d >0, the energy storage power station i4 is included in the new energy power station Sz; the generation of the controllable load set Lz includes: if P l.i5.u -P l.i5.d>0, the controllable load i5 is included in the new energy power station Lz.

[0121] Optionally, updating the active adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz includes:

[0122] It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If so, the active power command values ​​of the new energy power stations other than the new energy power stations in the new energy power station set Nz are kept unchanged, and the active power command values ​​of the new energy stations after the first stage optimization in the new energy power station set Nz are taken as the lower limit to update the active power adjustable space.

[0123] Optionally, it is determined whether it is true that the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If it is false, the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads optimized in the first stage are executed as the final active power command values.

[0124] Optionally, the second stage optimization objective function is:

[0125]

[0126] Among them, M n.y2 is the unit power income of the additional active power of the new energy power station y2 in the new energy power station group Nz participating in the replacement transaction, C s.y5 is the unit power cost of energy storage station y5 participating in absorbing the active power of new energy station y2 in energy storage station set Sz, C l.y4 is the unit power cost of the controllable load y4 in the controllable load set Lz participating in absorbing the active power of the new energy power station y2, P n.y2.2 , P s.y5.2 , P l.y4.2 are the active power command values ​​after the second stage optimization of the new energy power station y2, the energy storage power station y5, and the controllable load y4, P n ′ .y2.1 It is the first-stage optimized active power command value of the new energy power station y2.

[0127] In a third aspect, the present invention provides an active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation, including a processor and a storage medium;

[0128] The storage medium is used to store instructions;

[0129] The processor is used to operate according to the instructions to execute the steps according to the above method.

[0130] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the above method when executed by a processor.

[0131] Compared with the prior art, the present invention has the following beneficial effects:

[0132] The present invention provides a method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation. 1) On the basis of ensuring safe and economical operation of the power grid in an electric power market environment, a two-stage optimization strategy for real-time control of energy storage power stations and controllable loads participating in new energy absorption is proposed, which can further utilize the regulation capabilities of energy storage power stations and controllable loads to improve the new energy absorption capacity; 2) In the first stage, in the optimization decision-making model for fully utilizing the complementary and coordinated absorption of new energy, the influence of energy storage power stations is added, and the calculation method of the adjustment space of different objects is refined; in the second stage, for restricted new energy power stations, the adjustment space of energy storage power stations and controllable loads participating in replacement transactions is explored, so as to further improve the new energy absorption capacity, while meeting the market transaction settlement needs, which can promote the active participation of energy storage power stations and controllable load entities in new energy absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0133] Figure 1 It is a flow chart of a method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation, provided in Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0134] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0135] Embodiment 1:

[0136] like Figure 1 As shown, an embodiment of the present invention provides a method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation, comprising the following steps:

[0137] 1. Determine the new energy power stations, conventional power plants, energy storage power stations, controllable loads and external communication lines involved in the coordinated control;

[0138] 2. Taking the maximum sum of the active power command values ​​of the participating new energy stations and conventional power plants as the optimization goal, taking into account the active power adjustable space and the safe operation constraints of the power grid, the first-stage optimization objective function is constructed;

[0139] 3. According to the optimization objective function of the first stage, the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads after the first stage optimization are calculated;

[0140] 4. According to the active power command value of the new energy power station optimized in the first stage, the new energy power station with limited output is determined, and the new energy power station set Nz is generated; according to the active power adjustable space, the energy storage power station and controllable load with active power adjustable space are determined, and the energy storage power station set Sz and the controllable load set Lz are generated; specifically:

[0141] Generating the new energy power station set Nz includes: if the active power command value of the new energy power station i2 after the first stage optimization is less than the upper limit of the adjustable space P n.i2.u , then include it in the new energy power station set Nz; generate the energy storage power station set Sz including: if P s.i4.u -P s.i4.d >0, the energy storage power station i4 is included in the new energy power station Sz; the controllable load set Lz generated includes: if P l.i5.u -P l.i5.d >0, the controllable load i5 is included in the new energy power station Lz.

[0142] 5. Update the active power adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz; specifically:

[0143] The active power adjustable space is updated according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz, including:

[0144] It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If so, the active power command values ​​of the new energy power stations other than the new energy power stations in the new energy power station set Nz are kept unchanged, and the active power command values ​​of the new energy stations after the first stage optimization in the new energy power station set Nz are taken as the lower limit to update the active power adjustable space.

[0145] It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If it is false, the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads optimized in the first stage are executed as the final active power command values.

[0146] 6. Taking the energy storage power station set Sz and the controllable load set Lz as the optimization goal, the energy storage power station and the controllable load in the new energy power station set Nz participate in the maximum active power consumption benefit of the new energy power station, taking into account the updated active power adjustable space and the safe operation constraints of the power grid, the second stage optimization objective function is constructed;

[0147] 7. According to the optimization objective function of the second stage, the active power command values ​​of the new energy power station, energy storage power station and controllable load after the second stage optimization are calculated;

[0148] 8. The new energy power stations, energy storage power stations and controllable loads in the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz shall be executed according to the active power instruction values ​​of the new energy power stations, energy storage power stations and controllable loads optimized in the second stage; the new energy power stations, energy storage power stations, controllable loads and conventional power plants outside the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz shall be executed according to the active power instruction values ​​optimized in the first stage.

[0149] Specific:

[0150] 1. The acquisition of active adjustable space includes:

[0151] (1) Obtain the grid operation status data at time t0, and calculate the active power sensitivity of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load to the safe and stable transmission channel based on the grid operation status data at time t0;

[0152] (2) Obtain the safe and stable power transmission channel limit and determine the power grid safe operation constraints in combination with the active power sensitivity of the safe and stable power transmission channel;

[0153] (3) Obtain the active power regulation limit of the external interconnection line and the active power regulation speed of the new energy power station, conventional power plant, energy storage power station and controllable load, and calculate the active power adjustable space of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load participating in the coordinated control.

[0154] In step (1), the active sensitivity of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load to the safe and stable power transmission channel is calculated including:

[0155] If the topological structure of the power grid at time t1 has not changed relative to time t0, then for the power grid operation status data at time t0, the power flow calculation method is used to calculate the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid, as the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid at time t1;

[0156] Otherwise, the grid operation status data at time t0 is adjusted accordingly according to the change in the grid topology structure. For the adjusted grid operation status data, the power flow calculation method is used to calculate the active sensitivity of the active power of the grid active equipment to the safe and stable transmission channel of the grid, which is used as the active sensitivity of the active power of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable transmission channel of the grid at time t1.

[0157] In step (3), the active adjustable space of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads participating in the coordinated control is calculated as follows:

[0158] The upper limit P of the adjustable space for active power regulation of the external contact line i1 participating in the coordinated control at time t1 tl.i1.u and the lower limit P tl.i1.d for:

[0159] P tl.i1.u =min[P tl.i1.0 +v tl.i1.u (t1-t0-Δt-Δt tl.i1 ),P tl.i1.t.max ],i1∈TL1

[0160] P tl.i1.d =max[P tl.i1.0 -v tl.i1.d (t1-t0-Δt-Δt tl.i 1),P tl.i1.t.min ],i1∈TL1

[0161] Among them, TL1 is the external contact line set participating in the coordinated control, P tl.i1.0 、v tl.i1.u 、v tl.i1.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the external contact line i1 at time t0; P tl.i1.t.max and P tl.i1.t.min are the maximum and minimum active power of the external tie line i1 at time t1, respectively; Δt is the estimated time from time t0 to the time when the active power instruction is issued, Δt tl.i1 It is the estimated value of the time from the time when the active power command is issued to the time when the external contact line i1 starts to respond to the active power command;

[0162] The upper limit P of the adjustable space for active power regulation of the new energy power station i2 participating in the coordinated control at time t1 n.i2.u and the lower limit P n.i2.d for:

[0163] P n.i2.u =min[P n.i2.0 +v n.i2.u (t1-t0-Δt-Δt n.i2 ),P n.i2.t.max ],i2∈N1

[0164] P n.i2.d =max[P n.i2.0 -v n.i2.d (t1-t0-Δt-Δt n.i2 ),P n.i2.t.min ],i2∈N1

[0165] Among them, N1 is the set of new energy power stations participating in the coordinated control, P n.i2.0 、v n.i2.u 、v n.i2.d They are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the new energy power station i2 at time t0, and the upward active power regulation speed and the downward active power regulation speed are obtained according to the active power regulation speed; P n.i2.t.max and P n.i2.t.min are the maximum and minimum active power of the new energy power station i2 at time t1; Δt n.i2 It is the estimated time from the time when the active power command is issued to the time when the new energy power station i2 starts responding to the active power command;

[0166] The upper limit P of the adjustable space of active power regulation of conventional power plant i3 participating in cooperative control at time t1 is g.i3.u and the lower limit P g.i3.d for:

[0167] P g.i3.u =min[P g.i3.0 +v g.i3.u (t1-t0-Δt-Δt g.i3 ),P g.i3.t.max ],i3∈G1

[0168] P g.i3.d =max[P g.i3.0 -v g.i3.d (t1-t0-Δt-Δt g.i3 ),P g.i3.t.min ],i3∈G1

[0169] Among them, G1 is the set of conventional power plants participating in the coordinated control, P g.i3.0 、v g.i3.u 、v g.i3.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the conventional power plant i3 at time t0; P g.i3.t.max and P g.i3.t.min are the maximum and minimum active power of conventional power plant i3 at time t1; Δt g.i3 It is the estimated time from the time when the active power command is issued to the time when the conventional power plant i3 starts to respond to the active power command;

[0170] The upper limit P of the adjustable space for active power regulation of the energy storage power station i4 participating in the coordinated control at time t1 l.i4.u and the lower limit P l.i4.d for:

[0171] P s.i4.u =min[P s.i4.0 +v s.i4.u (t1-t0-Δt-Δt s.i4 ),P s.i4.t.max],i4∈S1

[0172] P s.i4.d =max[P s.i4.0 -v s.i4.d (t1-t0-Δt-Δt s.i4 ),P s.i4.t.min ],i4∈S1

[0173] Among them, S1 is the energy storage power station group participating in the coordinated control, P s.i4.0 、v s.i4.u 、v s.i4.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the energy storage power station i4 at time t0; P s.i4.t.max and P s.i4.t.min are the maximum and minimum active power of energy storage station i4 at time t1; Δt s.i4 It is the estimated value of the time from the time when the active power instruction is issued to the time when the energy storage power station i4 starts responding to the active power instruction;

[0174] The upper limit P of the adjustable space of the controllable load i5 participating in the coordinated control at time t1 is s.i5.u and the lower limit P s.i5.d for:

[0175] P l.i5.u =min[P l.i5.0 +v l.i5.u (t1-t0-Δt-Δt l.i5 ),P l.i5.t.max ],i5∈L1

[0176] P l.i5.d =max[P l.i5.0 -v l.i5.d (t1-t0-Δt-Δt l.i5 ),P l.i5.t.min ],i5∈L1

[0177] Among them, L1 is the controllable load set participating in the coordinated control, P l.i5.0 、v l.i5.u 、v l.i5.d are the active power, the upward active power regulation speed and the downward active power regulation speed of the controllable load i5 at time t0 respectively; P l.i5.t.max and P l.i5.t.min are the maximum and minimum active power of controllable load i5 at time t1 respectively; Δt l.i5 It is the estimated time from the time when the active power command is issued to the time when the controllable load i5 starts to respond to the active power command.

[0178] 2. The constraints for safe operation of the power grid are:

[0179]

[0180] Among them, L, G, N, and TL are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set participating in hot standby, L=L1+L2, G=G1+G2, N=N1+N2, TL=TL1+TL2, L2, G2, N2, and TL2 are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set not participating in coordinated control;

[0181] P l.j4.1 =P l ′ .j4.0 ,j4∈L2

[0182] P g.j3.1 =P g ′ .j3.0 ,j3∈G2

[0183] P n.j2.1 =P n ′ .j2.0 ,j2∈N2

[0184] P tl.j1.1 =P t ′ l.j1.0 ,j1∈TL2

[0185] Among them, P s ′ .j4.0 , P g ′ .j3.0 , P n ′ .j2.0 , P t ′ l.j1.0 are the predicted active power values ​​of controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T; P l.j4.1 , P g.j3.1 , P n.j2.1 , P tl.j1.1 They are the active power command values ​​of the controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T respectively;

[0186] γ, f0, K f is the network loss coefficient, frequency and active static frequency characteristic coefficient of the network at time t0; f r is the rated frequency of the intranet, ε f It is the preset permissible deviation value of the intranet frequency;

[0187] P l.m4.1 , Pg.m3.1 , P n.m2.1 , P tl.m1.1 P is the active power command value of the controllable load set participating in hot standby, conventional power plant set, new energy power station set, external interconnection line centralized controllable load m4, conventional power plant m3, new energy power station m2, and external interconnection line m1 at time t0+T; l.m4.0 , P g.m3.0 , P n.m2.0 , P tl.m1.0 The active power command values ​​of the controllable load set participating in hot standby, the conventional power plant set, the new energy power station set, the external interconnection line centralized controllable load m4, the conventional power plant m3, the new energy power station m2, and the external interconnection line m1 at time t0;

[0188] SL is the set of safe and stable power transmission channels of the power grid. For the overload monitoring transmission equipment in the set of safe and stable power transmission channels of the power grid, P sl.d.lmt.OD , P sl.d.lmt.FD is equal to the value of , which is the active overload limit of the overload monitoring transmission equipment d calculated based on the unchanged power factor of the overload monitoring transmission equipment d at time t0; for the overload monitoring stable section where the safe and stable transmission channel of the power grid is concentrated, P sl.d.lmt.OD , P sl.d.lmt.FD They are respectively the positive stability limit and the reverse stability limit of the stable section d at time t0+T;

[0189] P sl.d.0 is the active power of the overload monitoring transmission equipment / stable section of the power grid safe and stable transmission channel under the power grid operation status data at time t0; S G.d.g.m3 , S N.d.n.m2 , S TL.d.tl.m1 They are respectively the active sensitivity of the grid-connected active power of the conventional power plant m3, the new energy power station m2, and the external tie line m1 to the safe and stable transmission channel of the power grid under the grid operation status data at time t0;

[0190] P g.m3.1.us , P g.m3.1.ds P is the upper and lower limits of conventional units in conventional power plant m3 after taking into account effective standby; g.m2.1.us , P g.m.1.ds P is the upper and lower limits of the new energy units in the new energy power station m2 after taking into account the effective standby; g.m1.1.us , P g.m1.1.ds The upper and lower limits of the transmission of the external contact line m1;

[0191] μ u , μ d They are respectively the active positive reserve capacity coefficient and negative reserve capacity coefficient at the preset time t0+T.

[0192] 3. The optimization objective function of the first stage is:

[0193]

[0194] Among them, β g.i3 , β n.i2 are the comprehensive indicators of the control optimization decision of the conventional power plant i3 and the new energy power plant i2 at time t0; P g.i3.1 , P n.i2.1 They are respectively the active power command values ​​of the conventional power plant i3 and the new energy power plant i2 participating in the coordinated control at the time t0+T, and T is the real-time power generation control cycle.

[0195] 4. The second stage optimization objective function is:

[0196]

[0197] Among them, M n.y2 is the unit power income of the additional active power of the new energy power station y2 in the new energy power station group Nz participating in the replacement transaction, C s.y5 is the unit power cost of energy storage station y5 participating in absorbing the active power of new energy station y2 in energy storage station set Sz, C l.y4 is the unit power cost of the controllable load y4 in the controllable load set Lz participating in absorbing the active power of the new energy power station y2, P n.y2.2 , P s.y5.2 , P l.y4.2 are the active power command values ​​after the second stage optimization of the new energy power station y2, the energy storage power station y5, and the controllable load y4, P n ′ .y2.1 It is the first-stage optimized active power command value of the new energy power station y2.

[0198] Embodiment 2:

[0199] The embodiment of the present invention further provides an active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation, the device comprising:

[0200] Active node determination module, used to determine the new energy power stations, conventional power plants, energy storage power stations, controllable loads and external connection lines participating in the coordinated control;

[0201] The first-stage optimization module is used to take the maximum sum of the active power command values ​​of the participating new energy stations and conventional power plants as the optimization target, taking into account the active power adjustable space and the safe operation constraints of the power grid, and constructing the first-stage optimization objective function;

[0202] The first-stage optimization result acquisition module is used to calculate the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads after the first-stage optimization according to the first-stage optimization objective function;

[0203] The replacement transaction module is used to determine the new energy power station with limited output according to the active power command value of the new energy power station optimized in the first stage, and generate the new energy power station set Nz; determine the energy storage power station and controllable load with active power adjustable space according to the active power adjustable space, and generate the energy storage power station set Sz and the controllable load set Lz;

[0204] The second-stage optimization module is used to update the active adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz; the optimization goal is to maximize the active power consumption benefit of the energy storage power stations and controllable loads in the energy storage power station set Sz and the controllable load set Lz participating in the new energy power station set Nz, taking into account the updated active adjustable space and the safe operation constraints of the power grid, and constructing the second-stage optimization objective function;

[0205] The second-stage optimization result acquisition module is used to calculate the active power command values ​​of the new energy power station, energy storage power station and controllable load after the second-stage optimization according to the second-stage optimization objective function;

[0206] The active power instruction value execution module is used to execute the new energy power stations, energy storage power stations and controllable loads in the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz according to the active power instruction values ​​of the new energy power stations, energy storage power stations and controllable loads optimized in the second stage; and to execute the new energy power stations, energy storage power stations, controllable loads and conventional power plants outside the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz according to the active power instruction values ​​optimized in the first stage.

[0207] Specific:

[0208] 1. The acquisition of active adjustable space includes:

[0209] S1. Obtain the grid operation status data at time t0, and calculate the active power sensitivity of the external connection line, new energy power station, conventional power plant, energy storage power station and controllable load to the safe and stable transmission channel based on the grid operation status data at time t0;

[0210] S11. If the topological structure of the power grid at time t1 has not changed relative to time t0, then for the power grid operation status data at time t0, the power flow calculation method is used to calculate the active sensitivity of the active power of the external tie line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid, as the active sensitivity of the active power of the external tie line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid at time t1;

[0211] S22. Otherwise, the grid operation status data at time t0 is adjusted accordingly according to the change in the grid topology structure. For the adjusted grid operation status data, the power flow calculation method is used to calculate the active sensitivity of the active power of the grid active equipment to the safe and stable power transmission channel of the grid, which is used as the active sensitivity of the active power of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable power transmission channel of the grid at time t1.

[0212] S2. Obtain the safe and stable power transmission channel limit and determine the power grid safe operation constraints in combination with the active sensitivity of the safe and stable power transmission channel;

[0213] S3. Obtain the active power regulation limit of the external interconnection line and the active power regulation speed of the new energy power station, conventional power plant, energy storage power station and controllable load, and calculate the active power adjustable space of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load participating in the coordinated control.

[0214] S31, the upper limit P of the adjustable space for active power regulation of the external contact line i1 participating in the coordinated control at time t1 tl.i1.u and the lower limit P tl.i1.d for:

[0215] P tl.i1.u =min[P tl.i1.0 +v tl.i1.u (t1-t0-Δt-Δt tl.i1 ),P tl.i1.t.max ],i1∈TL1

[0216] P tl.i1.d =max[P tl.i1.0 -v tl.i1.d (t1-t0-Δt-Δt tl.i 1),P tl.i1.t.min ],i1∈TL1

[0217] Among them, TL1 is the external contact line set participating in the coordinated control, P tl.i1.0 、v tl.i1.u 、v tl.i1.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the external contact line i1 at time t0; P tl.i1.t.max and P tl.i1.t.min are the maximum and minimum active power of the external tie line i1 at time t1, respectively; Δt is the estimated time from time t0 to the time when the active power instruction is issued, Δt tl.i1 It is the estimated value of the time from the time when the active power command is issued to the time when the external contact line i1 starts to respond to the active power command;

[0218] S32, the upper limit P of the adjustable space for active power regulation of the new energy power station i2 participating in the coordinated control at time t1 n.i2.u and the lower limit Pn.i2.d for:

[0219] P n.i2.u =min[P n.i2.0 +v n.i2.u (t1-t0-Δt-Δt n.i2 ),P n.i2.t.max ],i2∈N1

[0220] P n.i2.d =max[P n.i2.0 -v n.i2.d (t1-t0-Δt-Δt n.i2 ),P n.i2.t.min ],i2∈N1

[0221] Among them, N1 is the set of new energy power stations participating in the coordinated control, P n.i2.0 、v n.i2.u 、v n.i2.d They are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the new energy power station i2 at time t0, and the upward active power regulation speed and the downward active power regulation speed are obtained according to the active power regulation speed; P n.i2.t.max and P n.i2.t.min are the maximum and minimum active power of the new energy power station i2 at time t1; Δt n.i2 It is the estimated time from the time when the active power command is issued to the time when the new energy power station i2 starts responding to the active power command;

[0222] S33, the upper limit P of the adjustable space for active power regulation of the conventional power plant i3 participating in the coordinated control at time t1 g.i3.u and the lower limit P g.i3.d for:

[0223] P g.i3.u =min[P g.i3.0 +v g.i3.u (t1-t0-Δt-Δt g.i3 ),P g.i3.t.max ],i3∈G1

[0224] P g.i3.d =max[P g.i3.0 -v g.i3.d (t1-t0-Δt-Δt g.i3 ),P g.i3.t.min ],i3∈G1

[0225] Among them, G1 is the set of conventional power plants participating in the coordinated control, P g.i3.0 、v g.i3.u 、v g.i3.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the conventional power plant i3 at time t0; P g.i3.t.max and Pg.i3.t.min are the maximum and minimum active power of conventional power plant i3 at time t1; Δt g.i3 It is the estimated time from the time when the active power command is issued to the time when the conventional power plant i3 starts to respond to the active power command;

[0226] S34, the upper limit P of the adjustable space for active power regulation of the energy storage power station i4 participating in the coordinated control at time t1 l.i4.u and the lower limit P l.i4.d for:

[0227] P s.i4.u =min[P s.i4.0 +v s.i4.u (t1-t0-Δt-Δt s.i4 ),P s.i4.t.max ],i4∈S1

[0228] P s.i4.d =max[P s.i4.0 -v s.i4.d (t1-t0-Δt-Δt s.i4 ),P s.i4.t.min ],i4∈S1

[0229] Among them, S1 is the energy storage power station group participating in the coordinated control, P s.i4.0 、v s.i4.u 、v s.i4.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the energy storage power station i4 at time t0; P s.i4.t.max and P s.i4.t.min are the maximum and minimum active power of energy storage station i4 at time t1; Δt s.i4 It is the estimated value of the time from the time when the active power instruction is issued to the time when the energy storage power station i4 starts responding to the active power instruction;

[0230] S35, the upper limit P of the adjustable space of the controllable load i5 participating in the coordinated control at the time t1 s.i5.u and the lower limit P s.i5.d for:

[0231] P l.i5.u =min[P l.i5.0 +v l.i5.u (t1-t0-Δt-Δt l.i5 ),P l.i5.t.max ],i5∈L1

[0232] P l.i5.d =max[P l.i5.0 -v l.i5.d (t1-t0-Δt-Δt l.i5 ),P l.i5.t.min ],i5∈L1

[0233] Among them, L1 is the controllable load set participating in the coordinated control, P l.i5.0 、v l.i5.u 、v l.i5.d are the active power, the upward active power regulation speed and the downward active power regulation speed of the controllable load i5 at time t0 respectively; P l.i5.t.max and P l.i5.t.min are the maximum and minimum active power of controllable load i5 at time t1 respectively; Δt l.i5 It is the estimated time from the time when the active power command is issued to the time when the controllable load i5 starts to respond to the active power command.

[0234] 2. The optimization objective function of the first stage is:

[0235]

[0236] Among them, β g.i3 , β n.i2 are the comprehensive indicators of the control optimization decision of the conventional power plant i3 and the new energy power plant i2 at time t0; P g.i3.1 , P n.i2.1 They are respectively the active power command values ​​of the conventional power plant i3 and the new energy power plant i2 participating in the coordinated control at the time t0+T, and T is the real-time power generation control cycle.

[0237] 3. The constraints for safe operation of the power grid are:

[0238]

[0239] Among them, L, G, N, and TL are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set participating in hot standby, L=L1+L2, G=G1+G2, N=N1+N2, TL=TL1+TL2, L2, G2, N2, and TL2 are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set not participating in coordinated control;

[0240] P l.j4.1 =P l ′ .j4.0 ,j4∈L2

[0241] P g.j3.1 =P g ′ .j3.0 ,j3∈G2

[0242] P n.j2.1 =P n ′ .j2.0 ,j2∈N2

[0243] P tl.j1.1 =Pt ′ l.j1.0 ,j1∈TL2

[0244] Among them, P s ′ .j4.0 , P g ′ .j3.0 , P n ′ .j2.0 , P t ′ l.j1.0 are the predicted active power values ​​of controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T; P l.j4.1 , P g.j3.1 , P n.j2.1 , P tl.j1.1 They are the active power command values ​​of the controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T respectively;

[0245] γ, f0, K f is the network loss coefficient, frequency and active static frequency characteristic coefficient of the network at time t0; f r is the rated frequency of the intranet, ε f It is the preset permissible deviation value of the intranet frequency;

[0246] P l.m4.1 , P g.m3.1 , P n.m2.1 , P tl.m1.1 P is the active power command value of the controllable load set participating in hot standby, conventional power plant set, new energy power station set, external interconnection line centralized controllable load m4, conventional power plant m3, new energy power station m2, and external interconnection line m1 at time t0+T; l.m4.0 , P g.m3.0 , P n.m2.0 , P tl.m1.0 The active power command values ​​of the controllable load set participating in hot standby, the conventional power plant set, the new energy power station set, the external interconnection line centralized controllable load m4, the conventional power plant m3, the new energy power station m2, and the external interconnection line m1 at time t0;

[0247] SL is the set of safe and stable power transmission channels of the power grid. For the overload monitoring transmission equipment in the set of safe and stable power transmission channels of the power grid, P sl.d.lmt.OD , P sl.d.lmt.FD is equal to the value of , which is the active overload limit of the overload monitoring transmission equipment d calculated based on the unchanged power factor of the overload monitoring transmission equipment d at time t0; for the overload monitoring stable section where the safe and stable transmission channel of the power grid is concentrated, P sl.d.lmt.OD , Psl.d.lmt.FD They are respectively the positive stability limit and the reverse stability limit of the stable section d at time t0+T;

[0248] P sl.d.0 is the active power of the overload monitoring transmission equipment / stable section of the power grid safe and stable transmission channel under the power grid operation status data at time t0; S G.d.g.m3 , S N.d.n.m2 , S TL.d.tl.m1 They are respectively the active sensitivity of the grid-connected active power of the conventional power plant m3, the new energy power station m2, and the external tie line m1 to the safe and stable transmission channel of the power grid under the grid operation status data at time t0;

[0249] P g.m3.1.us , P g.m3.1.ds P is the upper and lower limits of conventional units in conventional power plant m3 after taking into account effective standby; g.m2.1.us , P g.m.1.ds P is the upper and lower limits of the new energy units in the new energy power station m2 after taking into account the effective standby; g.m1.1.us , P g.m1.1.ds The upper and lower limits of the transmission of the external contact line m1;

[0250] μ u , μ d They are respectively the active positive reserve capacity coefficient and negative reserve capacity coefficient at the preset time t0+T.

[0251] 4. Generate the new energy power station set Nz including: if the active power command value of the new energy power station i2 after the first stage optimization is less than the upper limit of the adjustable space P n.i2.u , then include it in the new energy power station set Nz; generate the energy storage power station set Sz including: if P s.i4.u -P s.i4.d >0, the energy storage power station i4 is included in the new energy power station Sz; the controllable load set Lz generated includes: if P l.i5.u -P l.i5.d >0, the controllable load i5 is included in the new energy power station Lz.

[0252] 5. Update the active power adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz, including:

[0253] It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If so, the active power command values ​​of the new energy power stations other than the new energy power stations in the new energy power station set Nz are kept unchanged, and the active power command values ​​of the new energy stations after the first stage optimization in the new energy power station set Nz are taken as the lower limit to update the active power adjustable space.

[0254] It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If it is false, the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads optimized in the first stage are executed as the final active power command values.

[0255] 6. The second stage optimization objective function is:

[0256]

[0257] Among them, M n.y2 is the unit power income of the additional active power of the new energy power station y2 in the new energy power station group Nz participating in the replacement transaction, C s.y5 is the unit power cost of energy storage station y5 participating in absorbing the active power of new energy station y2 in energy storage station set Sz, C l.y4 is the unit power cost of the controllable load y4 in the controllable load set Lz participating in absorbing the active power of the new energy power station y2, P n.y2.2 , P s.y5.2 , P l.y4.2 are the active power command values ​​after the second stage optimization of the new energy power station y2, the energy storage power station y5, and the controllable load y4, P n ′ .y2.1 It is the first-stage optimized active power command value of the new energy power station y2.

[0258] Embodiment three:

[0259] Based on the first embodiment, the embodiment of the present invention further provides an active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation, including a processor and a storage medium;

[0260] The storage medium is used to store instructions;

[0261] The processor is used to operate according to the instructions to execute the steps according to the above method.

[0262] Embodiment 4:

[0263] Based on the first embodiment, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the above method are implemented.

[0264] The present application proposes a method for controlling the active power of a power grid in which energy storage power stations and controllable loads participate in regulation. According to a two-stage solution strategy of whether energy storage power stations and controllable loads are taken into account, on the basis of maximizing the active power command value of the new energy power station, the cost of replacement or peak-shaving auxiliary services is taken into account according to restricted conditions to achieve maximum optimization of comprehensive benefits. It is explained that the first stage does not consider energy storage power stations and controllable loads, and for wind, solar, water, fire and other power sources, coordinated optimization control is carried out, and constraints such as section safety, backup requirements and peak load limit are taken into account to obtain the first stage optimization instructions; in the second stage, for the situation where new energy is limited but there is margin for energy storage power stations and controllable loads, based on the optimization results of the first stage, the energy storage power station and controllable load are replaced in real time to improve the new energy consumption, with the goal of maximizing the comprehensive benefits of the power grid, taking into account the safety constraints of the power grid, energy storage power station and controllable load, and obtaining the second stage optimization instructions; in order to fully utilize the space and regulation complementary characteristics of various power generation resources such as new energy power stations and conventional power plants to realize the new energy consumption, further explore the auxiliary service space of energy storage power stations and controllable loads to realize the maximum consumption of new energy, and at the same time, by accurately calculating the transaction power, provide a basis for market transactions, and better promote energy storage power stations and controllable load suppliers to actively participate in the new energy consumption. This method can achieve the maximum optimization of comprehensive benefits and has certain theoretical and engineering value.

[0265] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0266] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0267] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0268] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0269] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation, characterized in that: include: Determine the new energy power stations, conventional power plants, energy storage power stations, controllable loads and external communication lines that will participate in the coordinated control; Taking the maximum sum of the active power command values ​​of the participating new energy stations and conventional power plants as the optimization goal, taking into account the active power adjustable space and the safe operation constraints of the power grid, the first-stage optimization objective function is constructed; The active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads after the first stage optimization are calculated according to the first stage optimization objective function; According to the active power command value of the new energy power station optimized in the first stage, the new energy power station with limited output is determined, and a new energy power station set Nz is generated; Determine energy storage power stations and controllable loads with active power adjustable space according to the active power adjustable space, and generate energy storage power station set Sz and controllable load set Lz; Update the active power adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz; Taking the energy storage power station set Sz and the controllable load set Lz as the optimization goal to maximize the active power consumption benefit of the new energy power station in the new energy power station set Nz, taking into account the updated active power adjustable space and the safe operation constraints of the power grid, the second stage optimization objective function is constructed; The active power command values ​​of the new energy power station, energy storage power station and controllable load after the second stage optimization are calculated according to the second stage optimization objective function; The new energy power stations, energy storage power stations and controllable loads in the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz are executed according to the active power command values ​​of the new energy power stations, energy storage power stations and controllable loads after the optimization in the second stage; The new energy power stations, energy storage power stations, controllable loads and conventional power plants outside the new energy power station set Nz, energy storage power station set Sz and controllable load set Lz are executed according to the active power command value optimized in the first stage; Wherein, obtaining the active adjustable space includes: Obtain the grid operation status data at time t0, and calculate the active power sensitivity of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable transmission channel based on the grid operation status data at time t0; Obtain the safe and stable power transmission channel limit and determine the power grid safe operation constraints in combination with the active power sensitivity of the safe and stable power transmission channel; Obtain the active power regulation limit of the external interconnection line and the active power regulation speed of the new energy power station, conventional power plant, energy storage power station and controllable load, and calculate the active power adjustable space of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load participating in the coordinated control; The calculation of the active sensitivity of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load to the safe and stable power transmission channel includes: If the topological structure of the power grid at time t1 has not changed relative to time t0, then for the power grid operation status data at time t0, the power flow calculation method is used to calculate the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid, as the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid at time t1; Otherwise, the grid operation status data at time t0 is adjusted accordingly according to the change in the grid topology structure. For the adjusted grid operation status data, the power flow calculation method is used to calculate the active sensitivity of the active power of the grid active equipment to the safe and stable power transmission channel of the grid, which is used as the active sensitivity of the active power of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load to the safe and stable power transmission channel of the grid at time t1; Among them, the optimization objective function of the first stage is: Among them, β g.i3 , β n.i2 are the comprehensive indicators of the control optimization decision of the conventional power plant i3 and the new energy power plant i2 at time t0; P g.i3.1 , P n.i2.1 are respectively the active power command values ​​of the conventional power plant i3 and the new energy power plant i2 participating in the coordinated control at the time t0+T, and T is the real-time power generation control cycle; The second stage optimization objective function is: Among them, M n.y2 is the unit power income of the additional active power of the new energy power station y2 in the new energy power station group Nz participating in the replacement transaction, C s.y5 is the unit power cost of energy storage station y5 participating in absorbing the active power of new energy station y2 in energy storage station set Sz, C l.y4 is the unit power cost of the controllable load y4 in the controllable load set Lz participating in absorbing the active power of the new energy power station y2, P n.y2.2 , P s.y5.2 , P l.y4.2 are the active power command values ​​after the second phase optimization of the new energy power station y2, the energy storage power station y5, and the controllable load y4, respectively. n ′ .y2.1 It is the first-stage optimized active power command value of the new energy power station y2.

2. A method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 1, characterized in that: The active adjustable space of the external connection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads participating in the coordinated control includes: The upper limit P of the adjustable space for active power regulation of the external contact line i1 participating in the coordinated control at time t1 tl.i1.u and the lower limit P tl.i1.d for: P tl.i1.u =min[P tl.i1.0 +v tl.i1.u (t1-t0-Δt-Δt tl.i1 ),P tl.i1.t.max ],i1∈TL1 P tl.i1.d =max[P tl.i1.0 -v tl.i1.d (t1-t0-Δt-Δt tl.i 1),P tl.i1.t.min ],i1∈TL1 Among them, TL1 is the external contact line set participating in the coordinated control, P tl.i1.0 、v tl.i1.u 、v tl.i1.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the external contact line i1 at time t0; P tl.i1.t.max and P tl.i1.t.min are the maximum and minimum active power of the external tie line i1 at time t1, respectively; Δt is the estimated time from time t0 to the time when the active power instruction is issued, Δt tl.i1 It is the estimated value of the time from the time when the active power command is issued to the time when the external contact line i1 starts to respond to the active power command; The upper limit P of the adjustable space for active power regulation of the new energy power station i2 participating in the coordinated control at time t1 n.i2.u and the lower limit P n.i2.d for: P n.i2.u =min[P n.i2.0 +v n.i2.u (t1-t0-Δt-Δt n.i2 ),P n.i2.t.max ],i2∈N1 P n.i2.d =max[P n.i2.0 -v n.i2.d (t1-t0-Δt-Δt n.i2 ),P n.i2.t.min ],i2∈N1 Among them, N1 is the set of new energy power stations participating in the coordinated control, P n.i2.0 、v n.i2.u 、v n.i2.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the new energy power station i2 at time t0, wherein the upward active power regulation speed and the downward active power regulation speed are obtained according to the active power regulation speed; P n.i2.t.max and P n.i2.t.min are the maximum and minimum active power of the new energy power station i2 at time t1; Δt n.i2 It is the estimated time from the time when the active power command is issued to the time when the new energy power station i2 starts responding to the active power command; The upper limit P of the adjustable space of active power regulation of conventional power plant i3 participating in cooperative control at time t1 is g.i3.u and the lower limit P g.i3.d for: P g.i3.u =min[P g.i3.0 +v g.i3.u (t1-t0-Δt-Δt g.i3 ),P g.i3.t.max ],i3∈G1 P g.i3.d =max[P g.i3.0 -v g.i3.d (t1-t0-Δt-Δt g.i3 ),P g.i3.t.min ],i3∈G1 Among them, G1 is the set of conventional power plants participating in the coordinated control, P g.i3.0 、v g.i3.u 、v g.i3.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the conventional power plant i3 at time t0; P g.i3.t.max and P g.i3.t.min are the maximum and minimum active power of conventional power plant i3 at time t1; Δt g.i3 It is the estimated time from the time when the active power command is issued to the time when the conventional power plant i3 starts to respond to the active power command; The upper limit P of the adjustable space for active power regulation of the energy storage power station i4 participating in the coordinated control at time t1 l.i4.u and the lower limit P l.i4.d for: P s.i4.u =min[P s.i4.0 +v s.i4.u (t1-t0-Δt-Δt s.i4 ),P s.i4.t.max ],i4∈S1 P s.i4.d =max[P s.i4.0 -v s.i4.d (t1-t0-Δt-Δt s.i4 ),P s.i4.t.min ],i4∈S1 Among them, S1 is the energy storage power station group participating in the coordinated control, P s.i4.0 、v s.i4.u 、v s.i4.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the energy storage power station i4 at time t0; P s.i4.t.max and P s.i4.t.min are the maximum and minimum active power of energy storage station i4 at time t1; Δt s.i4 It is the estimated value of the time from the time when the active power instruction is issued to the time when the energy storage power station i4 starts responding to the active power instruction; The upper limit P of the adjustable space of the controllable load i5 participating in the coordinated control at time t1 is s.i5.u and the lower limit P s.i5.d for: P l.i5.u =min[P l.i5.0 +v l.i5.u (t1-t0-Δt-Δt l.i5 ),P l.i5.t.max ],i5∈L1 P l.i5.d =max[P l.i5.0 -v l.i5.d (t1-t0-Δt-Δt l.i5 ),P l.i5.t.min ],i5∈L1 Among them, L1 is the controllable load set participating in the coordinated control, P l.i5.0 、v l.i5.u 、v l.i5.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the controllable load i5 at time t0; P l.i5.t.max and P l.i5.t.min are the maximum and minimum active power of controllable load i5 at time t1 respectively; Δt l.i5 It is the estimated time from the time when the active power command is issued to the time when the controllable load i5 starts to respond to the active power command.

3. A method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 2, characterized in that: The grid safe operation constraints are: Among them, L, G, N, and TL are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set participating in hot standby, L=L1+L2, G=G1+G2, N=N1+N2, TL=TL1+TL2, L2, G2, N2, and TL2 are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set not participating in coordinated control; P l.j4.1 =P l ′ .j4.0 ,j4∈L2 P g.j3.1 =P g ′ .j3.0 ,j3∈G2 P n.j2.1 =P n ′ .j2.0 ,j2∈N2 P tl.j1.1 =P t ′ l.j1.0 ,j1∈TL2 Among them, P s ′ .j4.0 , P g ′ .j3.0 , P n ′ .j2.0 , P t ′ l.j1.0 are the predicted active power values ​​of controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T; P l.j4.1 , P g.j3.1 , P n.j2.1 , P tl.j1.1 They are the active power command values ​​of the controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T respectively; γ, f0, K f is the network loss coefficient, frequency and active static frequency characteristic coefficient of the network at time t0; f r is the rated frequency of the intranet, ε f It is the preset permissible deviation value of the intranet frequency; P l.m4.1 , P g.m3.1 , P n.m2.1 , P tl.m1.1 is the active power command value of the controllable load set participating in hot standby, conventional power plant set, new energy power station set, external interconnection line centralized controllable load m4, conventional power plant m3, new energy power station m2, and external interconnection line m1 at time t0+T; P l.m4.0 , P g.m3.0 , P n.m2.0 , P tl.m1.0 The active power command values ​​of the controllable load set participating in hot standby, the conventional power plant set, the new energy power station set, the external interconnection line centralized controllable load m4, the conventional power plant m3, the new energy power station m2, and the external interconnection line m1 at time t0; SL is the set of safe and stable power transmission channels of the power grid. For the overload monitoring transmission equipment in the set of safe and stable power transmission channels of the power grid, P sl.d.lmt.OD , P sl.d.lmt.FD is equal to the value of , which is the active overload limit of the overload monitoring transmission equipment d calculated based on the unchanged power factor of the overload monitoring transmission equipment d at time t0; for the overload monitoring stable section where the safe and stable transmission channel of the power grid is concentrated, P sl.d.lmt.OD , P sl.d.lmt.FD They are respectively the positive stability limit and the reverse stability limit of the stable section d at time t0+T; P sl.d.0 is the active power of the overload monitoring transmission equipment / stable section of the power grid safe and stable transmission channel under the power grid operation status data at time t0; S G.d.g.m3 , S N.d.n.m2 , S TL.d.tl.m1 They are respectively the active sensitivity of the grid-connected active power of the conventional power plant m3, the new energy power station m2, and the external tie line m1 to the safe and stable transmission channel of the power grid under the grid operation status data at time t0; P g.m3.1.us , P g.m3.1.ds P is the upper and lower limits of conventional units in conventional power plant m3 after taking into account effective standby; g.m2.1.us , P g.m.1.ds P is the upper and lower limits of the new energy units in the new energy power station m2 after taking into account the effective standby; g.m1.1.us , P g.m1.1.ds The upper and lower limits of the transmission of the external contact line m1; μ u , μ d They are respectively the active positive reserve capacity coefficient and negative reserve capacity coefficient at the preset time t0+T.

4. A method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 3, characterized in that: The generating of the new energy power station set Nz includes: if the active power command value of the new energy power station i2 after the first stage optimization is less than the upper limit of the adjustable space P n.i2.u , then include it in the new energy power station set Nz; the generation of energy storage power station set Sz includes: if P s.i4.u -P s.i4.d >0, the energy storage power station i4 is included in the new energy power station Sz; the generation of the controllable load set Lz includes: if P l.i5.u -P l.i5.d >0, the controllable load i5 is included in the new energy power station Lz.

5. A method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 4, characterized in that: The updating of the active power adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz includes: It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If so, the active power command values ​​of the new energy power stations other than the new energy power stations in the new energy power station set Nz are kept unchanged, and the active power command values ​​of the new energy stations after the first stage optimization in the new energy power station set Nz are taken as the lower limit to update the active power adjustable space.

6. A method for controlling active power of a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 5, characterized in that: It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If it is false, the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads optimized in the first stage are executed as the final active power command values.

7. A power grid active power control device in which an energy storage power station and a controllable load participate in regulation, characterized in that: The device comprises: Active node determination module, used to determine the new energy power stations, conventional power plants, energy storage power stations, controllable loads and external connection lines participating in the coordinated control; The first-stage optimization module is used to take the maximum sum of the active power command values ​​of the participating new energy stations and conventional power plants as the optimization target, taking into account the active power adjustable space and the safe operation constraints of the power grid, and constructing the first-stage optimization objective function; The first-stage optimization result acquisition module is used to calculate the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads after the first-stage optimization according to the first-stage optimization objective function; The replacement transaction module is used to determine the new energy power station with limited output according to the active power command value of the new energy power station optimized in the first stage, and generate the new energy power station set Nz; determine the energy storage power station and controllable load with active power adjustable space according to the active power adjustable space, and generate the energy storage power station set Sz and the controllable load set Lz; The second-stage optimization module is used to update the active adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz; the optimization goal is to maximize the active power consumption benefit of the energy storage power stations and controllable loads in the energy storage power station set Sz and the controllable load set Lz participating in the new energy power station set Nz, taking into account the updated active adjustable space and the safe operation constraints of the power grid, and constructing the second-stage optimization objective function; The second-stage optimization result acquisition module is used to calculate the active power command values ​​of the new energy power station, energy storage power station and controllable load after the second-stage optimization according to the second-stage optimization objective function; The active power command value execution module is used to execute the new energy power stations, energy storage power stations and controllable loads in the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz according to the active power command values ​​of the new energy power stations, energy storage power stations and controllable loads optimized in the second stage; and execute the new energy power stations, energy storage power stations and controllable loads and conventional power plants outside the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz according to the active power command values ​​optimized in the first stage; Wherein, obtaining the active adjustable space includes: Obtain the grid operation status data at time t0, and calculate the active power sensitivity of the external interconnection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads to the safe and stable transmission channel based on the grid operation status data at time t0; Obtain the safe and stable power transmission channel limit and determine the power grid safe operation constraints in combination with the active power sensitivity of the safe and stable power transmission channel; Obtain the active power regulation limit of the external interconnection line and the active power regulation speed of the new energy power station, conventional power plant, energy storage power station and controllable load, and calculate the active power adjustable space of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load participating in the coordinated control; The calculation of the active sensitivity of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load to the safe and stable power transmission channel includes: If the topological structure of the power grid at time t1 has not changed relative to time t0, then for the power grid operation status data at time t0, the power flow calculation method is used to calculate the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid, as the active sensitivity of the active power of the external interconnection line, the new energy power station, the conventional power plant, the energy storage power station and the controllable load to the safe and stable power transmission channel of the power grid at time t1; Otherwise, the grid operation status data at time t0 is adjusted accordingly according to the change in the grid topology structure. For the adjusted grid operation status data, the power flow calculation method is used to calculate the active sensitivity of the active power of the grid active equipment to the safe and stable power transmission channel of the grid, which is used as the active sensitivity of the active power of the external interconnection line, new energy power station, conventional power plant, energy storage power station and controllable load to the safe and stable power transmission channel of the grid at time t1; Among them, the optimization objective function of the first stage is: Among them, β g.i3 , β n.i2 are the comprehensive indicators of the control optimization decision of the conventional power plant i3 and the new energy power plant i2 at time t0; P g.i3.1 , P n.i2.1 are respectively the active power command values ​​of the conventional power plant i3 and the new energy power plant i2 participating in the coordinated control at the time t0+T, and T is the real-time power generation control cycle; The second stage optimization objective function is: Among them, M n.y2 is the unit power income of the additional active power of the new energy power station y2 in the new energy power station group Nz participating in the replacement transaction, C s.y5 is the unit power cost of energy storage station y5 participating in absorbing the active power of new energy station y2 in energy storage station set Sz, C l.y4 is the unit power cost of the controllable load y4 in the controllable load set Lz participating in absorbing the active power of the new energy power station y2, P n.y2.2 , P s.y5.2 , P l.y4.2 are the active power command values ​​after the second phase optimization of the new energy power station y2, the energy storage power station y5, and the controllable load y4, respectively. n ′ .y2.1 It is the first-stage optimized active power command value of the new energy power station y2.

8. The active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 7, characterized in that: The active adjustable space of the external connection lines, new energy power stations, conventional power plants, energy storage power stations and controllable loads participating in the coordinated control includes: The upper limit P of the adjustable space for active power regulation of the external contact line i1 participating in the coordinated control at time t1 tl.i1.u and the lower limit P tl.i1.d for: P tl.i1.u =min[P tl.i1.0 +v tl.i1.u (t1-t0-Δt-Δt tl.i1 ),P tl.i1.t.max ],i1∈TL1 P tl.i1.d =max[P tl.i1.0 -v tl.i1.d (t1-t0-Δt-Δt tl.i 1),P tl.i1.t.min ],i1∈TL1 Among them, TL1 is the external contact line set participating in the coordinated control, P tl.i1.0 、v tl.i1.u 、v tl.i1.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the external contact line i1 at time t0; P tl.i1.t.max and P tl.i1.t.min are the maximum and minimum active power of the external tie line i1 at time t1, respectively; Δt is the estimated time from time t0 to the time when the active power instruction is issued, Δt tl.i1 It is the estimated value of the time from the time when the active power command is issued to the time when the external contact line i1 starts to respond to the active power command; The upper limit P of the adjustable space for active power regulation of the new energy power station i2 participating in the coordinated control at time t1 n.i2.u and the lower limit P n.i2.d for: P n.i2.u =min[P n.i2.0 +v n.i2.u (t1-t0-Δt-Δt n.i2 ),P n.i2.t.max ],i2∈N1 P n.i2.d =max[P n.i2.0 -v n.i2.d (t1-t0-Δt-Δt n.i2 ),P n.i2.t.min ],i2∈N1 Among them, N1 is the set of new energy power stations participating in the coordinated control, P n.i2.0 、v n.i2.u 、v n.i2.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the new energy power station i2 at time t0, wherein the upward active power regulation speed and the downward active power regulation speed are obtained according to the active power regulation speed; n.i2.t.max and P n.i2.t.min are the maximum and minimum active power of the new energy power station i2 at time t1; Δt n.i2 It is the estimated time from the time when the active power command is issued to the time when the new energy power station i2 starts responding to the active power command; The upper limit P of the adjustable space of active power regulation of conventional power plant i3 participating in cooperative control at time t1 is g.i3.u and the lower limit P g.i3.d for: P g.i3.u =min[P g.i3.0 +v g.i3.u (t1-t0-Δt-Δt g.i3 ),P g.i3.t.max ],i3∈G1 P g.i3.d =max[P g.i3.0 -v g.i3.d (t1-t0-Δt-Δt g.i3 ),P g.i3.t.min ],i3∈G1 Among them, G1 is the set of conventional power plants participating in the coordinated control, P g.i3.0 、v g.i3.u 、v g.i3.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the conventional power plant i3 at time t0; P g.i3.t.max and P g.i3.t.min are the maximum and minimum active power of conventional power plant i3 at time t1; Δt g.i3 It is the estimated time from the time when the active power command is issued to the time when the conventional power plant i3 starts to respond to the active power command; The upper limit P of the adjustable space for active power regulation of the energy storage power station i4 participating in the coordinated control at time t1 l.i4.u and the lower limit P l.i4.d for: P s.i4.u =min[P s.i4.0 +v s.i4.u (t1-t0-Δt-Δt s.i4 ),P s.i4.t.max ],i4∈S1 P s.i4.d =max[P s.i4.0 -v s.i4.d (t1-t0-Δt-Δt s.i4 ),P s.i4.t.min ],i4∈S1 Among them, S1 is the energy storage power station group participating in the coordinated control, P s.i4.0 、v s.i4.u 、v s.i4.d are respectively the active power, the upward active power regulation speed and the downward active power regulation speed of the energy storage power station i4 at time t0; P s.i4.t.max and P s.i4.t.min are the maximum and minimum active power of energy storage station i4 at time t1; Δt s.i4 It is the estimated value of the time from the time when the active power instruction is issued to the time when the energy storage power station i4 starts responding to the active power instruction; The upper limit P of the adjustable space of the controllable load i5 participating in the coordinated control at time t1 is s.i5.u and the lower limit P s.i5.d for: P l.i5.u =min[P l.i5.0 +v l.i5.u (t1-t0-Δt-Δt l.i5 ),P l.i5.t.max ],i5∈L1 P l.i5.d =max[P l.i5.0 -v l.i5.d (t1-t0-Δt-Δt l.i5 ),P l.i5.t.min ],i5∈L1 Among them, L1 is the controllable load set participating in the coordinated control, P l.i5.0 、v l.i5.u 、v l.i5.d are the active power, the upward active power regulation speed and the downward active power regulation speed of the controllable load i5 at time t0 respectively; P l.i5.t.max and P l.i5.t.min are the maximum and minimum active power of controllable load i5 at time t1 respectively; Δt l.i5 It is the estimated time from the time when the active power command is issued to the time when the controllable load i5 starts to respond to the active power command.

9. The active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 8, characterized in that: The grid safe operation constraints are: Among them, L, G, N, and TL are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set participating in hot standby, L=L1+L2, G=G1+G2, N=N1+N2, TL=TL1+TL2, L2, G2, N2, and TL2 are respectively the controllable load set, conventional power plant set, new energy power plant set, and external interconnection line set not participating in coordinated control; P l.j4.1 =P l ′ .j4.0 ,j4∈L2 P g.j3.1 =P g ′ .j3.0 ,j3∈G2 P n.j2.1 =P n ′ .j2.0 ,j2∈N2 P tl.j1.1 =P t ′ l.j1.0 ,j1∈TL2 Among them, P s ′ .j4.0 , P g ′ .j3.0 , P n ′ .j2.0 , P t ′ l.j1.0 are the predicted active power values ​​of controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T; P l.j4.1 , P g.j3.1 , P n.j2.1 , P tl.j1.1 They are the active power command values ​​of the controllable load j4, conventional power plant j3, new energy power station j2, and external connection line j1 at time t0+T respectively; γ, f0, K f is the network loss coefficient, frequency and active static frequency characteristic coefficient of the network at time t0; f r is the rated frequency of the intranet, ε f It is the preset permissible deviation value of the intranet frequency; P l.m4.1 , P g.m3.1 , P n.m2.1 , P tl.m1.1 is the active power command value of the controllable load set participating in hot standby, conventional power plant set, new energy power station set, external interconnection line centralized controllable load m4, conventional power plant m3, new energy power station m2, and external interconnection line m1 at time t0+T; P l.m4.0 , P g.m3.0 , P n.m2.0 , P tl.m1.0 The active power command values ​​of the controllable load set participating in hot standby, the conventional power plant set, the new energy power station set, the external interconnection line centralized controllable load m4, the conventional power plant m3, the new energy power station m2, and the external interconnection line m1 at time t0; SL is the set of safe and stable power transmission channels of the power grid. For the overload monitoring transmission equipment in the set of safe and stable power transmission channels of the power grid, P sl.d.lmt.OD , P sl.d.lmt.FD is equal to the value of , which is the active overload limit of the overload monitoring transmission equipment d calculated based on the unchanged power factor of the overload monitoring transmission equipment d at time t0; for the overload monitoring stable section where the safe and stable transmission channel of the power grid is concentrated, P sl.d.lmt.OD , P sl.d.lmt.FD They are respectively the positive stability limit and the reverse stability limit of the stable section d at time t0+T; P sl.d.0 is the active power of the overload monitoring transmission equipment / stable section of the power grid safe and stable transmission channel under the power grid operation status data at time t0; S G.d.g.m3 , S N.d.n.m2 , S TL.d.tl.m1 They are respectively the active sensitivity of the grid-connected active power of the conventional power plant m3, the new energy power station m2, and the external tie line m1 to the safe and stable transmission channel of the power grid under the grid operation status data at time t0; P g.m3.1.us , P g.m3.1.ds P is the upper and lower limits of conventional units in conventional power plant m3 after taking into account effective standby; g.m2.1.us , P g.m.1.ds P is the upper and lower limits of the new energy units in the new energy power station m2 after taking into account the effective standby; g.m1.1.us , P g.m1.1.ds The upper and lower limits of the transmission of the external contact line m1; μ u , μ d They are respectively the active positive reserve capacity coefficient and negative reserve capacity coefficient at the preset time t0+T.

10. The active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 9, characterized in that: The generating of the new energy power station set Nz includes: if the active power command value of the new energy power station i2 after the first stage optimization is less than the upper limit of the adjustable space P n.i2.u , then include it in the new energy power station set Nz; the generation of energy storage power station set Sz includes: if P s.i4.u -P s.i4.d >0, the energy storage power station i4 is included in the new energy power station Sz; the generation of the controllable load set Lz includes: if P l.i5.u -P l.i5.d >0, the controllable load i5 is included in the new energy power station Lz.

11. A power grid active power control device in which an energy storage power station and a controllable load participate in regulation according to claim 10, characterized in that: The updating of the active power adjustable space according to the new energy power station set Nz, the energy storage power station set Sz and the controllable load set Lz includes: It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If so, the active power command values ​​of the new energy power stations other than the new energy power stations in the new energy power station set Nz are kept unchanged, and the active power command values ​​of the new energy stations after the first stage optimization in the new energy power station set Nz are taken as the lower limit to update the active power adjustable space.

12. The active power control device for a power grid in which an energy storage power station and a controllable load participate in regulation according to claim 11, characterized in that: It is determined whether the new energy power station set Nz is not empty and at least one of the energy storage power station set Sz or the controllable load set Lz is not empty. If it is false, the active power command values ​​of the new energy stations, conventional power plants, energy storage power stations and controllable loads optimized in the first stage are executed as the final active power command values.

13. A power grid active power control device in which an energy storage power station and a controllable load participate in regulation, characterized in that: including processor and storage medium; The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the steps of the method according to any one of claims 1-6.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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