Power generation control method based on provincial and regional coordination interaction and related equipment

Abstract

The embodiment of the invention discloses a power generation control method based on provincial and regional coordination interaction and related equipment. A target output value is obtained according to the active power of each regional dispatching new energy ACG control module and the adjustment power borne by each regional dispatching new energy ACG control module; obtaining expected load power of each local dispatching new energy ACG control module according to the target output value and a preset active control execution strategy; and the local dispatching new energy AGC control module performs power generation control according to the expected load power. According to the method, the target output value is allocated under three strategies of proportional allocation, priority sorting allocation or equal load rate allocation to obtain the expected load power, so that the control plan of the local dispatcher can be realized after the intermediate dispatcher issues the target output value and the allocation strategy is set, and the control plan does not need to be manually set; therefore, the accuracy of automatic power generation control of the new energy plant station administered by the local dispatching station is ensured.

Description

[Technical field]

[0001] The present invention relates to the technical field of electric power dispatching automation, and in particular to a power generation control method based on provincial and local coordinated interaction and related equipment. [Background technology]

[0002] Automatic Generation Control (AGC) of renewable energy is an important part of provincial and local coordinated control in the power system, especially in the context of the increasing proportion of renewable energy power generation, its importance is more prominent. At present, the content of provincial and local coordinated control mainly consists of the provincial dispatching department formulating overall control strategies and goals based on the overall power supply and demand situation and the forecast results of renewable energy power generation, and issuing them to the local dispatching department; the local dispatching department then formulates specific control methods based on the control strategies and goals of the provincial dispatching department, combined with the local renewable energy power generation situation and grid structure. However, the specific control methods currently need to be set manually, and the accuracy of the automatic power generation control of renewable energy plants and stations under the jurisdiction of the local dispatching department cannot be guaranteed. [Summary of the invention]

[0003] In view of this, the present invention provides a power generation control method and related equipment based on provincial and local coordinated interaction.

[0004] The specific technical scheme of the first embodiment of the present invention is: a power generation control method based on provincial and local coordinated interaction, applied to a provincial-local coordinated control system, wherein the provincial-local coordinated control system includes a central-adjusting new energy AGC control module and multiple local-adjusting new energy ACG control modules; the central-adjusting new energy AGC control module is used to issue the expected load power of each local-adjusting new energy ACG control module according to the target output value, and the local-adjusting new energy AGC control module is used to control the power generation of the new energy plant according to the expected load power; the method includes: obtaining the target output value according to the active power and the regulated power undertaken by each local-adjusting new energy ACG control module; obtaining the expected load power of each local-adjusting new energy ACG control module according to the target output value and a preset active control execution strategy; the preset active control execution strategy includes any one of a proportional allocation strategy, a priority allocation strategy and an equal load rate allocation strategy; the local-adjusting new energy AGC control module controls the power generation of the new energy plant according to the expected load power.

[0005] Preferably, when the preset active power control execution strategy is the equal load rate distribution strategy, the obtaining of the expected load power of each local-adjusting new energy ACG control module according to the target output value and the preset active power control execution strategy includes: obtaining the second active power accumulated value of the second local-adjusting new energy AGC control module according to the target output value and the first active power accumulated value of the first local-adjusting new energy AGC control module; the first local-adjusting new energy AGC control module is a local-adjusting new energy AGC control module that is not in the automatic power generation control mode, and the second local-adjusting new energy AGC control module is a local-adjusting new energy AGC control module that is in the automatic power generation control mode; the expected load power of each local-adjusting new energy ACG control module is obtained according to the second active power accumulated value and the installed capacity of all the local-adjusting new energy AGC control modules.

[0006] Preferably, the expected load power of each ground-adjusted new energy ACG control module is obtained using the following formula:

[0007] P dreg =P des -P nreg

[0008] LF dequ =P dreg / P regcap

[0009] Among them, P dreg is the second active accumulated value, P des is the target output value, P nreg is the first active accumulated value, LF dequ is the expected load power, P regcap is the installed capacity and.

[0010] Preferably, when the preset active power control execution strategy is the proportional allocation strategy or the priority allocation strategy, the expected load power of each local-regulating new energy ACG control module is obtained according to the target output value and the preset active power control execution strategy, including: obtaining the total regulated output value according to the target output value and the total output value of all local-regulating new energy AGC control modules; allocating the total regulated output value to each local-regulating new energy AGC control module according to the preset active power control execution strategy to obtain the expected load power of each local-regulating new energy ACG control module.

[0011] Preferably, the proportional allocation strategy includes any one of an allocation strategy based on actual output proportion, an allocation strategy based on installed capacity proportion, an allocation strategy based on theoretical output proportion, an allocation strategy based on network-related performance proportion, an allocation strategy based on power prediction proportion, and an allocation strategy based on adjustable capacity.

[0012] Preferably, when the proportional allocation strategy is the adjustable capacity allocation strategy, the expected load power of each local regulation new energy ACG control module is obtained by the following formula:

[0013]

[0014] Among them, P eqreg is the expected load power, P lfcmx It is the adjustable upper limit of all online units sent by the new energy AGC direct-adjustment power plant that the central-adjustment new energy AGC control module participates in the allocation and the local-adjustment new energy ACG control module that participates in the allocation, P tot is the sum of the real-time active power of online new energy plants sent by all the local new energy ACG control modules, ΔP is the total regulated output value, P lfcmn It is the adjustable lower limit of all online units sent by the new energy AGC direct-adjustment power plant that participates in the allocation of the central-adjustment new energy AGC control module and the local-adjustment new energy ACG control module that participates in the allocation; the online units include online wind turbines and online photovoltaic units.

[0015] Preferably, the allocation strategy based on priority order includes any one of an allocation strategy based on manually set priority order and an allocation strategy based on real-time load rate order.

[0016] The specific technical solution of the second embodiment of the present invention is: a power generation control system based on provincial and local coordinated interaction, the system comprising: an output value acquisition module, a load power acquisition module and a power generation control module; the output value acquisition module is used to obtain the target output value according to the active power and the regulated power undertaken by each local-adjusted new energy ACG control module; the load power acquisition module is used to obtain the expected load power of each local-adjusted new energy ACG control module according to the target output value and the preset active power control execution strategy; the preset active power control execution strategy includes any one of the proportional allocation strategy, the priority allocation strategy and the equal load rate allocation strategy; the power generation control module is used for the local-adjusted new energy AGC control module to control the power generation of the new energy plant according to the expected load power.

[0017] The specific technical solution of the third embodiment of the present invention is: a power generation control device based on provincial and local coordinated interaction, comprising a memory and a processor, the memory storing a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method as described in any one of the first embodiments of the present application.

[0018] The specific technical solution of the fourth embodiment of the present invention is: a computer-readable storage medium storing a computer program, which, when executed by a processor, enables the processor to perform the steps of the method described in any one of the first embodiments of the present application.

[0019] Implementing the embodiments of the present invention will have the following beneficial effects:

[0020] The present invention obtains the target output value according to the active power of each local-adjustment new energy ACG control module and the regulated power undertaken; obtains the expected load power of each local-adjustment new energy ACG control module according to the target output value and the preset active control execution strategy; the local-adjustment new energy AGC control module performs power generation control according to the expected load power. The expected load power is obtained by allocating the target output value under three strategies: proportional allocation, priority allocation, or equal load rate allocation, so that the central adjustment can implement the control plan of the local adjustment after issuing the target output value and setting the allocation strategy, without manually setting the control plan, thereby ensuring the accuracy of the automatic power generation control of the new energy plant under the jurisdiction of the local adjustment.

Brief Description of the Drawings

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A flow chart of the steps of a power generation control method based on provincial and local coordinated interaction;

[0023] Figure 2 It is a framework diagram of the provincial-local coordinated control system;

[0024] Figure 3 It is a structural diagram of a power generation control system based on provincial and local coordinated interaction;

[0025] Figure 4 A diagram of the internal structure of a computer device;

[0026] Among them, 201 is an output value acquisition module; 202 is a load power acquisition module; 203 is a power generation control module. [Specific implementation method]

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The terms "first", "second", etc. in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally includes steps or modules that are not listed, or optionally includes other steps or modules that are inherent to these processes, methods, products or devices.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] Automatic Generation Control (AGC) is to adjust the active power of the generator set through an automatic control program in a certain area when the power system frequency or the power of the tie line changes, so as to maintain the system frequency or ensure the predetermined exchange power between regions. Its technical equipment system mainly includes the grid operation control system of dispatching agencies at all levels, telecontrol transmission channels, remote terminal equipment or computer monitoring systems of power plants, generator set coordination control systems, generator sets and their active power adjustment devices, and application software to realize the AGC function. For the regulation and control in which the new energy AGC participates, under normal circumstances, the new energy station generates electricity at its maximum capacity. When the grid encounters cross-section limit, peak regulation difficulty, insufficient reserve, frequency fluctuation, etc., the new energy AGC automatically adjusts the output power of the new energy power generation equipment (such as photovoltaic inverters) to meet the safety and stability needs of the grid.

[0031] Power Conditioning Controller (PLC): According to the instructions of the AGC system, the PLC can accurately control the output power of the new energy power generation equipment. It calculates the difference between the total power sent and the sum of the current power generation of each device as the power to be adjusted, and then prioritizes the adjustable power ratio of each device to allocate the power to each device. This process ensures that the new energy power generation equipment can achieve efficient and stable operation while meeting the needs of the power grid. In the new energy AGC system, the PLC can also integrate optimization algorithms and strategies, such as proportional allocation method and priority sorting method, to achieve more accurate and efficient power regulation. These algorithms and strategies can fully consider the characteristics of new energy power generation equipment and power grid requirements, ensuring that the system can still maintain stable operation under complex and changing working conditions.

[0032] Principle of PLC equivalence of local dispatching: Provincial and local coordinated control should support the equalization of a single local dispatching into multiple virtual machines according to group objects, grid topology nodes, and section partitions, so as to achieve refined control of photovoltaic / wind farms and related sections on the central dispatching side. The principles for PLC equivalence of local dispatching new energy farms in the central dispatching master station are as follows:

[0033] 1) The ground-based stations whose output has an impact on the same provincial-level coordinated section can be equivalent to one PLC, and other new energy stations that are not affected by the provincial-level coordinated section can be equivalent to one PLC;

[0034] 2) The new energy station connected to the same 220kV node can be equivalent to a PLC;

[0035] 3) Each local-level new energy station is equivalent to only one PLC.

[0036] Provincial and local coordination: An effective coordination mechanism is established between provincial power grid dispatching and local power grid dispatching. Generally, the provincial dispatching formulates overall control strategies and goals based on the overall power supply and demand situation and the forecast results of renewable energy power generation, and issues them to local dispatching. Local dispatching then formulates specific control plans based on the provincial dispatching control strategies and goals, combined with the local renewable energy power generation situation and power grid structure. The dispatching and control of renewable energy power generation is optimized through provincial and local coordinated control strategies. This can not only improve the safety and stability of the power grid, but also improve the utilization rate and power generation efficiency of renewable energy.

[0037] See also Figure 1, is a flow chart of the steps of a power generation control method based on provincial and local coordinated interaction in the first embodiment of the present application, so as to ensure the accuracy of automatic power generation control of new energy plants and stations under the jurisdiction of the local dispatching department, and is applied to the provincial-local coordinated control system, the provincial-local coordinated control system includes a central dispatching new energy AGC control module and multiple local dispatching new energy ACG control modules; the central dispatching new energy AGC control module is used to send the expected load power of each local dispatching new energy ACG control module according to the target output value, and the local dispatching new energy AGC control module is used to control the power generation of the new energy plant and station according to the expected load power; the method includes:

[0038] Step 101, obtaining the target output value according to the active power and the regulated power undertaken by each local regulation new energy ACG control module;

[0039] Step 102: obtaining the expected load power of each local regulation new energy ACG control module according to the target output value and the preset active power control execution strategy; the preset active power control execution strategy includes any one of a proportional distribution strategy, a priority distribution strategy and an equal load rate distribution strategy;

[0040] Step 103: The local regulation new energy AGC control module controls power generation of the new energy plant according to the expected load power.

[0041] Specifically, the framework diagram of the provincial-local coordinated control system is as follows: Figure 2 As shown. The provincial-local coordinated control system is divided into two control levels: the local dispatching new energy ACG control module (hereinafter referred to as local dispatching) level and the central dispatching new energy AGC control module (hereinafter referred to as central dispatching) level. The local dispatching conducts zoning statistics according to the operating status of the dispatching and managing power grid, builds a new energy virtual equivalent machine for the partitioned adjustable resources, and sends the operating status of the virtual equivalent machine to the central dispatching, which constitutes the control object of active power control with the direct dispatching new energy station on the central dispatching side. The new energy AGC on the central dispatching side sends the decision results to the direct dispatching new energy station and the local dispatching virtual equivalent machine according to the overall new energy control target (which can be obtained from the conventional AGC or the new energy AGC is independently controlled). The local dispatching new energy AGC then optimizes the allocation of the adjustable new energy resources under the local dispatching and management according to the optimization results issued by the central dispatching, and implements active power control.

[0042] The specific provincial and local coordination control modeling methods of central and local coordination are as follows:

[0043] 1) Central control modeling

[0044] The China New Energy AGC maintains the existing regional control model, field group control model and direct control station control model. The ground-adjustment virtual group model is modeled as a field control object, and corresponding records are added to the "New Energy Field Station Controller Table" and "New Energy Field Station Information Table".

[0045] 2) Geological Control Modeling

[0046] The local dispatching new energy AGC keeps the regional control model unchanged and is responsible for the overall control of the new energy in the entire region. According to the needs of provincial and local coordinated control, the field group control model is expanded to undertake the coordinated control objectives issued by the central dispatching. In this optimization method, a single local dispatching is divided into multiple virtual machines according to the group objects, grid topology nodes, and section partitions. That is, the local dispatching can virtualize all control stations into one equivalent machine and add an overall control station to the field group control model. It can also virtualize the station into two virtual equivalent machines, wind power and photovoltaic, according to the power generation type, and add two control field groups, wind power and photovoltaic, to the field group control model. Later, it can be partitioned according to the requirements of relevant sections and nodes for virtual equivalence.

[0047] The target output value calculation formula of the local PLC sent by the central control is as follows:

[0048] P des =P eqreg +P tot

[0049] Where: P des is the target output value of the ground-adjusting equivalent PLC, P tot is the sum of the real-time active power of online renewable energy plants and stations sent from local dispatch, P eqreg It is the regulating power undertaken by the ground-adjusting equivalent PLC. The expected load power of each ground-adjusting new energy ACG control module is obtained according to the target output value and the preset active power control execution strategy; the ground-adjusting new energy AGC control module controls the power generation of the new energy plant according to the expected load power.

[0050] The method in this embodiment obtains the expected load power by allocating the target output value under three strategies: proportional allocation, priority allocation or equal load rate allocation. Therefore, after the central dispatching sends the target output value and sets the allocation strategy, the local dispatching control plan can be implemented without manually setting the control plan, thereby ensuring the accuracy of automatic power generation control of new energy plants under the jurisdiction of the local dispatching.

[0051] In a specific embodiment, when the preset active power control execution strategy is the equal load rate distribution strategy, the expected load power of each local-adjusting new energy ACG control module is obtained according to the target output value and the preset active power control execution strategy, including: obtaining the second active power accumulated value of the second local-adjusting new energy AGC control module according to the target output value and the first active power accumulated value of the first local-adjusting new energy AGC control module; the first local-adjusting new energy AGC control module is a local-adjusting new energy AGC control module that is not in the automatic power generation control mode, and the second local-adjusting new energy AGC control module is a local-adjusting new energy AGC control module that is in the automatic power generation control mode; the expected load power of each local-adjusting new energy ACG control module is obtained according to the second active power accumulated value and the installed capacity of all the local-adjusting new energy AGC control modules.

[0052] Specifically, when the regulation demand allocation strategy in the local dispatching control area / group is “equal load rate allocation”, the local dispatching receives the control area / group target output P issued by the central dispatching. des Then, subtract the first active accumulated value P of the powered-on renewable energy plant in the current control area / group that is not in the “automatic adjustment (AUTO / AUTOR)” control mode. nreg (Real-time calculation of local regulation new energy AGC) to obtain the second active power accumulation value P of the new energy plant in the control area / group in the "automatic regulation (AUTO / AUTOR)" control mode dreg , then adjust the new energy AGC according to P dreg Calculation results, calculate the expected load factor LF of the new energy plant in the "automatic adjustment (AUTO / AUTOR)" control mode in the control area / group dequ .

[0053] In a specific embodiment, the expected load power of each ground-adjusted new energy ACG control module is obtained using the following formula:

[0054] P dreg =P des -P nreg

[0055] LF dequ =P dreg / P regcap

[0056] Among them, P dreg is the second active accumulated value, P des is the target output value, P nreg is the first active accumulated value, LF dequ is the expected load power, P regcap is the installed capacity and.

[0057] In a specific embodiment, when the preset active power control execution strategy is the proportional allocation strategy or the priority allocation strategy, the expected load power of each local-regulated new energy ACG control module is obtained according to the target output value and the preset active power control execution strategy, including: obtaining the total regulated output value according to the target output value and the total output value of all local-regulated new energy AGC control modules; allocating the total regulated output value to each of the local-regulated new energy AGC control modules according to the preset active power control execution strategy to obtain the expected load power of each local-regulated new energy ACG control module.

[0058] Specifically, when the regulation demand allocation strategy in the local regulation control area / group is to allocate by priority or by proportion, the local regulation receives the control area / group target output P issued by the central regulation. des Then, subtract the total output P of all online new energy plants in the current control area / group at the current moment tot , calculate the total regulation demand ΔP of the control area / group, that is:

[0059] ΔP=P des -P tot

[0060] The total regulation demand ΔP is then allocated to the new energy plant PLC in the current control area / group in the "automatic regulation (AUTO / AUTOR)" control mode and executed according to the selected proportion and priority allocation strategy.

[0061] In a specific embodiment, the proportional allocation strategy includes any one of an allocation strategy based on actual output proportion, an allocation strategy based on installed capacity proportion, an allocation strategy based on theoretical output proportion, an allocation strategy based on network-related performance proportion, an allocation strategy based on power prediction proportion, and an allocation strategy based on adjustable capacity.

[0062] (1) Allocation according to actual output ratio:

[0063] Under this allocation strategy, the regulation power P borne by the ground-regulating equivalent PLC is eqreg The calculation method is as follows:

[0064]

[0065] Where: ΔP is the total regulation demand of the central control area / group, P now The real-time active power of the AGC direct-controlled power plants participating in the allocation, P reg It is the sum of the real-time active power of the entire new energy station in the "automatic adjustment (AUTO / AUTOR)" control mode sent by the local adjustment and other value machines participating in the allocation.

[0066] (2) Allocation by installed capacity ratio

[0067] Under this allocation strategy, the regulation power P borne by the ground-regulating equivalent PLC is eqreg The calculation method is as follows:

[0068]

[0069] Where: P cap The installed capacity of the new energy AGC direct dispatch power plant that China Dispatching participated in allocating, P regcap It is the sum of the total installed capacity of the new energy stations in the "automatic adjustment (AUTO / AUTOR)" control mode transmitted by the local adjustment and other value machines participating in the allocation, and ΔP is the total adjustment demand of the central adjustment control area / group.

[0070] (3) Distribution according to theoretical output ratio

[0071] Under this allocation strategy, the regulation power P borne by the ground-regulating equivalent PLC is eqreg The calculation method is as follows:

[0072]

[0073] Where: P theo The theoretical output of the new energy AGC direct dispatch power plant that China Dispatching participates in the allocation, P regtheo It is the sum of the theoretical outputs of all new energy stations in the "automatic adjustment (AUTO / AUTOR)" control mode sent by the local adjustment and other value machines participating in the allocation, and ΔP is the total adjustment demand of the central adjustment control area / group.

[0074] (4) Distribution by network performance ratio

[0075] Under this allocation strategy, the calculation method of the regulation power Peqreg borne by the ground-regulation equivalent PLC is as follows:

[0076]

[0077] Where: P theo P is the grid-related performance parameter of the new energy AGC direct-dispatch power plant that China Dispatch participates in allocating. regperf It is the sum of the network-related performance parameters of the new energy stations in the "automatic adjustment (AUTO / AUTOR)" control mode sent by the local adjustment and other value machines participating in the allocation. ΔP is the total adjustment demand of the central adjustment control area / group.

[0078] (5) Allocation according to ultra-short-term power forecast ratio

[0079] Under this allocation strategy, the calculation method of the regulation power Peqreg borne by the ground-regulation equivalent PLC is as follows:

[0080]

[0081] Where: P lf is the ultra-short-term power forecast result of the new energy AGC direct dispatch power plant that the Central Dispatching Agency participates in allocating, P reglf It is the sum of the ultra-short-term power forecasts of the entire new energy station in the "automatic regulation (AUTO / AUTOR)" control mode sent by the local regulation and other value machines participating in the allocation. ΔP is the total regulation demand of the central regulation control area / group.

[0082] In a specific embodiment, when the proportional allocation strategy is the adjustable capacity allocation strategy, the expected load power of each local regulation new energy ACG control module is obtained by the following formula:

[0083]

[0084] Among them, P eqreg is the expected load power, P lfcmx It is the adjustable upper limit of all online units sent by the new energy AGC direct-adjustment power plant that the central-adjustment new energy AGC control module participates in the allocation and the local-adjustment new energy ACG control module that participates in the allocation, P tot is the sum of the real-time active power of online new energy plants sent by all the local new energy ACG control modules, ΔP is the total regulated output value, P lfcmn It is the adjustable lower limit of all online units sent by the new energy AGC direct-adjustment power plant that participates in the allocation of the central-adjustment new energy AGC control module and the local-adjustment new energy ACG control module that participates in the allocation; the online units include online wind turbines and online photovoltaic units.

[0085] In a specific embodiment, the priority-based allocation strategy includes any one of a manually set priority-based allocation strategy and a real-time load rate-based allocation strategy.

[0086] Specifically, when sorting by priority, the calculation method of the regulation power Peqreg of the ground-regulation equivalent PLC is as follows:

[0087] P eqreg =min(P ctrlmx ΔP left )

[0088] Among them, P ctrlmx is the adjustment step length of the ground-adjustable PLC, P left The remaining regulation requirements of the region when sorting to the PLC with the same value as the ground regulation. As for the regulation priority calculation of the equivalent PLC, the details are as follows according to different strategies:

[0089] (1) Manual Prioritization

[0090] This allocation strategy depends on the adjustment priority manually set by the dispatcher. Under this allocation strategy, the PLC adjustment priority Facreg The calculation method is as follows:

[0091] Fac reg =Fac man

[0092] Among them: F acman It is the adjustment priority manually entered by the dispatcher. The smaller the coefficient, the higher the priority.

[0093] (2) Real-time load rate sorting

[0094] Under this allocation strategy, the adjustment priority of the ground-adjusting equivalent PLC depends on the current load rate. Its adjustment priority F acreg The calculation method is as follows:

[0095]

[0096] Among them: LF equ It is the real-time load rate of the ground-adjusting equivalent PLC. The smaller the coefficient is, the higher the priority is.

[0097] In a specific embodiment, in the equal load rate allocation strategy, the control area / group expected load rate LF is obtained. dequ After that, the new energy plants and stations under its jurisdiction will control power generation according to the load rate until the central dispatch sends the target output P des When the change value exceeds the dead zone, the calculation and control of the expected load rate are triggered again. d The calculation formula is as follows: Among them: LF d is the expected load rate of the central dispatching control area / group. The target output calculation formula of the local dispatching equivalent PLC sent by the central dispatching is as follows: des =P tot -P reg +LF d ×P regcap .

[0098] In a specific embodiment, the local regulation new energy AGC calculates the total regulation demand ΔP of the control area / group in real time according to the target output issued by the central regulation as follows:

[0099] ΔP=P des -P tot

[0100] If the calculated value of the total regulation demand ΔP is opposite to the regulation demand Parr issued by the central regulation, the latest received target output instruction will be discarded / blocked, and the current control target value will still be maintained as the last valid value.

[0101] The total regulation demand ΔP of the control area / group calculated in real time by the local regulation new energy AGC is different from the regulation demand P issued by the central regulation.arr If the deviation between them is greater than a certain threshold value (which can be set manually), it is determined that the command issued by the central control is abnormal, then the latest received target output command will be discarded / blocked, and the current control target value will still be maintained as the last valid value.

[0102] In order to realize the coordinated control of provincial and local new energy, real-time operation data interaction is required between provincial and local new energy AGCs. The interactive data flow is divided into two directions: local regulation uploading to central regulation and central regulation flowing to local regulation. For local regulation uploading to central regulation, the interactive content includes the operation status of local regulation new energy AGC, operation time, real-time active power of local regulation new energy stations controlled by local regulation and participating in regional regulation, upper and lower limits of active power regulation of local regulation new energy, etc.; for central regulation flowing to local regulation, the interactive content includes the operation status of central regulation new energy AGC, operation time, local regulation new energy active power regulation instructions, etc. This application introduces in detail the correspondence between the average value machine and telemetry and telesignaling at different measuring points and the specific requirements for data generation.

[0103] The specific information of provincial and local coordinated control data interaction is shown in Table 1.

[0104]

[0105]

[0106]

[0107] This application optimizes the control method of new energy AGC participating in provincial and local coordination, making the calculation method of the target output sent by the central dispatch to the local dispatch under different allocation strategies clearer, improving the accuracy of automatic power generation control of new energy plants and stations under the jurisdiction of the local dispatch, and helping to enhance the power grid's ability to absorb new energy power generation and the stability of power grid operation. Corresponding technical means: A control model for new energy AGC participating in provincial and local coordination is established. When calculating the target output sent by the central dispatch to the local dispatch, the calculation methods under the three strategies of proportional allocation, priority allocation, and equal load rate allocation are explained in detail and specific formulas are given. After receiving the targets sent by the central dispatch under different allocation strategies, the local dispatch adopts the corresponding calculation scheme to carry out power generation control of the new energy plants and stations under its jurisdiction.

[0108] At the same time, compared with the previous provincial and local coordinated data interaction strategies, this invention introduces in detail the data interaction types after the participation of new energy AGC and the requirements for specific data generation, which helps to improve the accuracy and completeness of the interactive data. Corresponding technical means: Through testing, a provincial and local coordinated control data interaction information table is formed, and the correspondence between the equivalent machines of different data and telemetry and telesignaling and the generation requirements of interactive data are explained.

[0109] In the specific embodiments, see Figure 3, is a structural diagram of a power generation control system based on provincial and local coordinated interaction in the second embodiment of the present application, characterized in that the system includes: an output value acquisition module 201, a load power acquisition module 202 and a power generation control module 203; the output value acquisition module 201 is used to obtain the target output value according to the active power and the regulated power undertaken by each local-adjusted new energy ACG control module; the load power acquisition module 202 is used to obtain the expected load power of each local-adjusted new energy ACG control module according to the target output value and the preset active power control execution strategy; the preset active power control execution strategy includes any one of the proportional allocation strategy, the priority allocation strategy and the equal load rate allocation strategy; the power generation control module 203 is used for the local-adjusted new energy AGC control module to control the power generation of the new energy plant according to the expected load power.

[0110] The system in this embodiment obtains the expected load power by allocating the target output value under three strategies: proportional allocation, priority allocation or equal load rate allocation. Therefore, after the central dispatching sends the target output value and sets the allocation strategy, the local dispatching control plan can be implemented without manually setting the control plan, thereby ensuring the accuracy of automatic power generation control of new energy plants under the jurisdiction of the local dispatching.

[0111] In a specific embodiment, the third embodiment of the present application provides a power generation control device based on provincial and local coordinated interaction, including a memory and a processor, the memory storing a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method as described in any one of the first embodiments of the present application.

[0112] In a specific embodiment, the fourth embodiment of the present application provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor executes the steps of the method as described in any one of the first embodiments of the present application.

[0113] Figure 4 The internal structure of a computer device in one embodiment is shown. The computer device can be a terminal or a server. Figure 4 The computer device includes a processor, a memory, etc. connected via a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program. When the computer program is executed by the processor, the processor can implement the method in this embodiment. The internal memory may also store a computer program. When the computer program is executed by the processor, the processor can implement the method in this embodiment. Those skilled in the art can understand that Figure 4The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0114] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

[0115] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A power generation control method based on provincial and local coordinated interaction, applied to a provincial-local coordinated control system, wherein the provincial-local coordinated control system comprises a centrally-adjusted new energy AGC control module and a plurality of local-adjusted new energy ACG control modules; the centrally-adjusted new energy AGC control module is used to issue the expected load power of each local-adjusted new energy ACG control module according to the target output value, and the local-adjusted new energy AGC control module is used to control the power generation of the new energy plant according to the expected load power; characterized in that, The method comprises: The target output value is obtained according to the active power of each local regulation new energy ACG control module and the regulated power undertaken; Obtain the expected load power of each local regulation new energy ACG control module according to the target output value and the preset active power control execution strategy; the preset active power control execution strategy includes any one of a proportional allocation strategy, a priority allocation strategy and an equal load rate allocation strategy; The local regulation new energy AGC control module controls the power generation of the new energy plant according to the expected load power.

2. The power generation control method based on provincial and local coordinated interaction according to claim 1, characterized in that: When the preset active power control execution strategy is the equal load rate allocation strategy, the method of obtaining the expected load power of each local regulation new energy ACG control module according to the target output value and the preset active power control execution strategy includes: According to the target output value and the first active accumulated value of the first local-adjusting new energy AGC control module, a second active accumulated value of the second local-adjusting new energy AGC control module is obtained; the first local-adjusting new energy AGC control module is a local-adjusting new energy AGC control module that is not in an automatic power generation control mode, and the second local-adjusting new energy AGC control module is a local-adjusting new energy AGC control module that is in an automatic power generation control mode; According to the second active accumulated value and the installed capacity of all the local-adjusting new energy AGC control modules, the expected load power of each local-adjusting new energy ACG control module is obtained.

3. The power generation control method based on provincial and local coordinated interaction as claimed in claim 2, characterized in that: The expected load power of each ground-adjusted new energy ACG control module is obtained by the following formula: P dreg =P des -P nreg LF dequ =P dreg / P regcap Among them, P dreg is the second active accumulated value, P des is the target output value, P nreg is the first active accumulated value, LF dequ is the expected load power, P regcap is the installed capacity and.

4. The power generation control method based on provincial and local coordinated interaction according to claim 1, characterized in that: When the preset active power control execution strategy is the proportional allocation strategy or the priority allocation strategy, the method of obtaining the expected load power of each local regulation new energy ACG control module according to the target output value and the preset active power control execution strategy includes: Obtaining a total regulated output value according to the target output value and the total output value of all the ground-regulated new energy AGC control modules; The total regulated output value is distributed to each of the local regulating new energy AGC control modules according to the preset active power control execution strategy to obtain the expected load power of each local regulating new energy ACG control module.

5. The power generation control method based on provincial and local coordinated interaction as claimed in claim 4, characterized in that: The proportional allocation strategy includes any one of the allocation strategies of actual output ratio allocation strategy, installed capacity ratio allocation strategy, theoretical output ratio allocation strategy, network performance ratio allocation strategy, power prediction ratio allocation strategy, and adjustable capacity allocation strategy.

6. The power generation control method based on provincial and local coordinated interaction as claimed in claim 5, characterized in that: When the proportional allocation strategy is the adjustable capacity allocation strategy, the expected load power of each local regulation new energy ACG control module is obtained by the following formula: Among them, P eqreg is the expected load power, P lfcmx It is the adjustable upper limit of all online units sent by the new energy AGC direct-adjustment power plant that the central-adjustment new energy AGC control module participates in the allocation and the local-adjustment new energy ACG control module that participates in the allocation, P tot is the sum of the real-time active power of online new energy plants sent by all the local new energy ACG control modules, ΔP is the total regulated output value, P lfcmn It is the adjustable lower limit of all online units sent by the new energy AGC direct-adjustment power plant that participates in the allocation of the central-adjustment new energy AGC control module and the local-adjustment new energy ACG control module that participates in the allocation; the online units include online wind turbines and online photovoltaic units.

7. The power generation control method based on provincial and local coordinated interaction according to claim 1, characterized in that: The priority-based allocation strategy includes any one of a manually set priority-based allocation strategy and a real-time load rate-based allocation strategy.

8. A power generation control system based on provincial and local coordinated interaction, characterized in that: The system comprises: an output value acquisition module, a load power acquisition module and a power generation control module; The output value acquisition module is used to obtain the target output value according to the active power and the regulated power undertaken by each local regulation new energy ACG control module; The load power acquisition module is used to obtain the expected load power of each local regulation new energy ACG control module according to the target output value and the preset active power control execution strategy; the preset active power control execution strategy includes any one of the proportional allocation strategy, the priority allocation strategy and the equal load rate allocation strategy; The power generation control module is used by the local new energy AGC control module to control the power generation of the new energy plant according to the expected load power.

9. A power generation control device based on provincial and local coordinated interaction, comprising a memory and a processor, characterized in that: The memory stores a computer program, and when the computer program is executed by the processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

Images