A novel power system flexible load regulation method and system

Abstract

The application discloses a novel power system flexible load regulation method and system, and belongs to the field of power control. The novel power system flexible load regulation method comprises the following steps: the method adopts a flexible load classification gathering and hierarchical control method, that is, control levels are divided according to geographical distribution, and in the same control level, production type, transfer type and consumption type loads are classified and gathered according to the flexible load characteristics. The state data of each level is gathered according to an uplink data model and is sent to the next gathering level, and the control target of the next gathering level is received. Each gathering level uses different flexible load regulation methods for different types of loads in the control level through overall planning and gathering, so that the problem of low control efficiency of a large number of single-point control objects with low capacity and dispersed positions is solved, and the reliability of the novel power system is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of power control, and particularly relates to a novel flexible load regulation method and system for a new power system. BACKGROUND

[0002] For traditional power system scheduling, the power load demand must be met at any time, and has a "rigidity" feature. Due to the addition of distributed power generation, energy storage, electric vehicles and the like, a new power system is formed. In the new power system, the load can interact with the power grid in terms of energy, and is flexible and variable within a certain range according to the need. Such a load is called a flexible load. The flexible load includes industrial load, commercial load and residential life load in power users, as well as two-way controllable load such as energy storage and electric vehicles, and also includes production and consumption combined load such as distributed wind and light power generation parks and microgrids.

[0003] The existing control method for the new power system is to collect data of all loads, combine the plan of the power grid, and develop a control scheme for each load. Due to the large amount of collected data and the large number of control objects, the calculation and control overhead of the power grid end is too large, causing a high error rate of the power grid end control.

[0004] In summary, the prior art has the technical problems of large load regulation overhead and easy error. SUMMARY

[0005] The present application belongs to the field of power control, and particularly relates to a novel flexible load regulation method and system for a new power system.

[0006] To achieve the above-mentioned purpose, the technical scheme of the novel flexible load regulation method and system for a new power system provided by the present application is as follows:

[0007] The application discloses a novel flexible load regulation method for a power system, and comprises the following steps: the method adopts a flexible load gathering and hierarchical control mode, controls areas of the flexible load according to geographical distribution, and each area of the flexible load is provided with a corresponding first gathering layer; the flexible load sends state data of the flexible load to the corresponding first gathering layer according to an uplink data model, and receives a regulation target issued by the corresponding first gathering layer according to a downlink data model; the first gathering layer gathers the state data, sends gathered data to an upper gathering layer or a dispatching layer, receives a regulation target issued by the upper gathering layer or the dispatching layer, generates a regulation target of the flexible load according to the received regulation target and a control strategy of the first gathering layer, and issues the regulation target to the flexible load; each gathering layer in a non-first gathering layer gathers gathered data of a lower gathering layer, sends the gathered data to an upper gathering layer or a dispatching layer, receives a regulation target issued by the upper gathering layer or the dispatching layer, generates a regulation target according to the regulation target and a control strategy of the gathering layer, and issues the regulation target to the lower gathering layer; the regulation target is a total power control target; the dispatching layer gathers gathered data of directly connected gathering layers, formulates a regulation target by combining the gathered data and a power grid power consumption plan, and issues the regulation target to the directly connected gathering layers.

[0008] The application has the beneficial effects that: the gathering layer processes and integrates uplink data of each flexible load, obtains total performance data and total demand data of the flexible load under the gathering layer, reports the gathered data to a dispatching layer or an upper gathering layer, the dispatching layer gathers data of multiple gathering layers, proposes a regulation target to each gathering layer by combining the performance of the power grid, and the flexible load of the gathering layer charges, generates power or stores energy according to the target of the control data, so that the flexible load contained in the dispatching layer operates within the plan, and the reliability of the power grid is improved and the trust degree of users is improved. By adopting the real-time gathering and hierarchical control method, the dispatching layer of the power grid processes integrated data reported by the gathering layer step by step, the data overhead pressure of the dispatching layer of the power grid is reduced, and the efficiency of power grid control is improved.

[0009] As a further improvement, the control strategy of the gathering layer is that: the first gathering layer differentiates and controls the flexible load into a production type load, a transfer type load and a consumption type load according to the uplink data.

[0010] The production type load refers to the flexible load with a power generation greater than 0, the transfer type load refers to the flexible load with a power generation greater than 0 and a load power greater than 0, and the consumption type load refers to the flexible load with a load power greater than 0.

[0011] The power generation is positive, the load power is negative, and the regulation target is: total target control power = total target power generation + total target energy storage + total target load power.

[0012] Beneficial effects: production type load, i.e. power generation load, transfer type load, i.e. energy storage load, and consumption type load, i.e. pure power consumption load. The specific convergence layer calculates the total target power generation power, the total target energy storage power and the total target load power according to the total target control power, the total target power generation power is realized by the production type load, the total target energy storage power is realized by the transfer type load, and the total target load power is realized by the consumption type load. By dividing the types of flexible loads in detail, the convergence layer can accurately control the flexible loads.

[0013] The characteristics of flexible loads are not static but dynamic, and the characteristics of flexible loads are not necessarily single but may also have mixed characteristics, so the type of flexible load is determined according to the uplink data. When the power generation power is greater than 0, it means that the load can generate power, when the energy storage power is greater than 0, it means that the load can be used to store energy, and when the load power is greater than 0, it means that the load is a power consumption load. According to the data, the type of the load can be accurately determined, which is convenient for individualized control of the load according to different load characteristics.

[0014] The control of the next level by the scheduling layer or the convergence layer is realized by specific power, and the convergence layer or the flexible load can also respond to the control of the upper level with a total target control power.

[0015] As a further improvement, the first convergence layer also differentiates control according to the current power consumption period, i.e. power consumption peak, power consumption valley and power consumption flat peak.

[0016] The beneficial effect is that the flexible load in a certain area as a whole will have power consumption peaks, power consumption valleys and power consumption flat peaks, and different power consumption states have different user needs. The power consumption state of the flexible load is controlled according to the characteristics of the power consumption period, and the target developed is more feasible.

[0017] As a further improvement, the control strategy of the first convergence layer is: when in the power consumption peak, control the production type flexible load to maximize the power generation power, the consumption type load to minimize the load power, and the transfer type load to supplement the difference of the total target power; when in the power consumption valley, control the consumption type load to maximize the load power, and the transfer type load to optimize the energy storage power under the condition of energy storage, and the production type load to supplement the difference of the total target power; when in the power consumption flat peak, control the transfer type load not to use electricity or generate electricity, the consumption type load to normally use electricity, and the production type load to supplement the difference of the total target power.

[0018] The beneficial effect is that individualized scheduling target implementation methods are developed according to different time periods of flexible loads, which is beneficial to improve the user's power consumption experience.

[0019] As a further improvement, when in the power consumption peak, the total target power generation is controlled = total power generation + power generation can increase power; if the energy storage SOC is less than or equal to the minimum allowable SOC limit, the total target energy storage power is controlled = 0, and the total target load power = total target control power - total target power generation; if the energy storage SOC is greater than the minimum allowable SOC limit, the total target load power = total load power - load can reduce power, the total target energy storage power = total target control power - total target power generation - total target load power, and it is judged whether the total target energy storage power is within the range of (energy storage power - energy storage can reduce power) to (energy storage power + energy storage can increase power). If it is not within the range, the total target load power is adjusted to correct; when in the power consumption trough, the total target load power = total load power + load can increase power; the energy storage SOC of the transfer type load is judged, if the energy storage SOC is greater than or equal to the maximum allowable SOC limit, the total target energy storage power = 0, if the energy storage SOC is less than the maximum allowable SOC limit, the total target energy storage power = energy storage optimal power, the total power generation target = total target control power - total target energy storage power - total target energy storage power, and it is judged whether the total target energy storage power is within the range of (energy storage power - energy storage can reduce power) to (energy storage power + energy storage can increase power). If it is not within the range, the total target energy storage power is adjusted to correct; when in the power consumption flat peak, the total target energy storage power = 0, the total target load power = total load power, and the total target power generation = total target control power - total target load power.

[0020] The beneficial effects are: when in the power consumption peak, the power generation power of the production type load is maximized, the power consumption power of the consumption type load is minimized, the energy storage SOC of the energy storage power of the transfer type load is judged, if the energy storage of the transfer type load is small, the energy storage is suspended, if the energy storage of the transfer type load is higher than the minimum energy storage, the energy storage power can be corrected, the total target energy storage power is calculated according to the total target control power and the total target power generation, total target load power, and the total target energy storage power is positive, then charging energy storage is performed, and when it is negative, power generation and energy release are performed. When in the power consumption trough, the power consumption power of the consumption type load is maximized, the energy storage power of the transfer type load is maximized to perform energy storage, and the total target power generation is calculated according to the total target control power and the total target energy storage power, total target energy storage power. When in the power consumption flat peak, the power consumption and power generation are in a balanced state, the transfer type load power is first set to 0, i.e. not charging or discharging.

[0021] The application further provides a novel flexible load regulation system of a power system, which comprises a scheduling layer and a convergence layer, wherein the convergence layer comprises multiple levels, wherein the flexible load is directly connected to a first-level convergence layer, and the first-level convergence layer is in communication connection with an upper-level convergence layer or the scheduling layer; the flexible load sends its state data to the corresponding first-level convergence layer according to an uplink data model, and receives a regulation target issued by the corresponding first-level convergence layer according to a downlink data model; the first-level convergence layer aggregates the state data, sends the obtained aggregated data to the upper-level convergence layer or the scheduling layer, receives a regulation target issued by the upper-level convergence layer or the scheduling layer, generates a regulation target of the flexible load according to the received regulation target and its own control strategy, and issues the regulation target to the flexible load; each first-level convergence layer in the non-first-level convergence layer aggregates the aggregated data of the lower-level convergence layer, sends the obtained aggregated data to the upper-level convergence layer or the scheduling layer, receives a regulation target issued by the upper-level convergence layer or the scheduling layer, generates a regulation target according to the regulation target and its own control strategy, and issues the regulation target to the lower-level convergence layer; the issued regulation target is a total power control target; the scheduling layer aggregates the aggregated data of the directly connected convergence layer, formulates a regulation target in combination with a power grid power consumption plan, and issues the regulation target to the directly connected convergence layer.

[0022] The beneficial effect is that, by adopting the real-time aggregation and hierarchical control method, the power grid scheduling layer processes the integrated data reported by the convergence layer step by step, reduces the data overhead pressure of the power grid scheduling layer, and improves the efficiency of power grid control.

[0023] As a further improvement, the self-control strategy of the convergence layer is that: the first-level convergence layer differentiates and controls the flexible load into production-type load, transfer-type load and consumption-type load according to the uplink data; the production-type load refers to the flexible load with a power generation greater than 0, the transfer-type load refers to the flexible load with a power generation greater than 0 and a load power greater than 0, and the consumption-type load refers to the flexible load with a load power greater than 0; the power generation is set to be positive, the load power is set to be negative, and the regulation target is: total target control power = total target power generation + total target energy storage + total target load power.

[0024] The beneficial effect is that: the production-type load is the load for power generation, the transfer-type load is the load for energy storage, and the consumption-type load is the load for pure power consumption. The convergence layer calculates the total target power generation, the total target energy storage and the total target load power according to the total target control power. By classifying the types of flexible load in detail, the convergence layer realizes accurate control over the flexible load.

[0025] As a further improvement, the first-level convergence layer also differentiates and controls according to the current power consumption period, i.e. power consumption peak, power consumption valley and power consumption flat peak period.

[0026] The beneficial effect is that the flexible load in a certain area has power consumption peaks, power consumption valleys and power consumption plateaus, and different power consumption states have different user demands, and the control of the power consumption state according to the characteristics of the power consumption period makes the formulated target more feasible.

[0027] As a further improvement, the control strategy adopted by the first aggregation layer is that when in the power consumption peak, the internal production type of the flexible load is controlled to maximize the power generation, the consumption type of the flexible load is controlled to minimize the load power, and the transfer type of the flexible load is used to supplement the difference of the total target power; when in the power consumption valley, the internal consumption type of the flexible load is controlled to maximize the load power, the transfer type of the flexible load is optimized to store energy power under the permission of the energy storage, and the production type of the flexible load is used to supplement the difference of the total target power; when in the power consumption plateau, the transfer type of the flexible load is not controlled to use electricity or generate electricity, the consumption type of the flexible load is controlled to normally use electricity, and the production type of the flexible load is used to supplement the difference of the total target power.

[0028] The beneficial effect is that the individualized scheduling target implementation mode is formulated according to different time periods of the flexible load, which is beneficial to improve the power consumption experience of the user.

[0029] As a further improvement, the first aggregation layer is used to process that when in the power consumption peak, the total target power generation is controlled to be equal to the total power generation plus the power generation increment; if the energy storage SOC is less than or equal to the minimum allowable SOC limit, the total energy storage power target is controlled to be 0, and the total target load power is controlled to be the total target control power minus the total target power generation; if the energy storage SOC is greater than the minimum allowable SOC limit, the total target load power is controlled to be the total load power minus the load decrement, the total target energy storage power is controlled to be the total target control power minus the total target power generation minus the total target load power, it is judged whether the total target energy storage power is within the range of (the energy storage power minus the energy storage decrement) to (the energy storage power plus the energy storage increment), and if not, the total target load power is adjusted to correct; when in the power consumption valley, the total target load power is equal to the total load power plus the load increment; the energy storage SOC of the transfer type is judged, if the energy storage SOC is greater than or equal to the maximum allowable SOC limit, the total target energy storage power is 0, if the energy storage SOC is less than the maximum allowable SOC limit, the total target energy storage power is the optimal energy storage power, the total target power generation is the total target control power minus the total target energy storage power minus the total target energy storage power, it is judged whether the total target energy storage power is within the range of (the energy storage power minus the energy storage decrement) to (the energy storage power plus the energy storage increment), and if not, the total target energy storage power is adjusted to correct; when in the power consumption plateau, the total target energy storage power is 0, the total target load power is the total load power, and the total target power generation is the total target control power minus the total target load power.

[0030] The beneficial effect is that the individualized scheduling target implementation mode is formulated according to different time periods of the flexible load, which is beneficial to improve the power consumption experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A schematic diagram of the new power system flexible load regulation method in the embodiment of the present application;

[0032] Figure 2 A flowchart of the method for calculating by the convergence layer during the power consumption peak according to the control data;

[0033] Figure 3 A flowchart of the method for calculating by the convergence layer during the power consumption valley according to the control data;

[0034] Figure 4 A flowchart of the method for calculating by the convergence layer during the power consumption flat peak according to the control data. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application, that is, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Embodiment of the new power system flexible load regulation method:

[0037] As shown in Figure 1 , the dispatching layer obtains a plurality of convergence layer data, and the convergence layer obtains a plurality of flexible load data. The division of the convergence layer is divided according to the district level, municipal administrative region, or other larger or smaller administrative regions such as township, village, group, etc., or non-administrative regions such as factories and other ways of division.

[0038] The convergence layer directly connected to the dispatching layer can be a first-level convergence layer, or a second-level, third-level, etc. multi-level convergence layer.

[0039] In this embodiment, the area of the power grid dispatching layer is taken as the municipal administrative region as an example. The dispatching layer is directly connected to the county-level convergence layer and part of the first-level convergence layer. The county-level convergence layer is directly connected to the township-level convergence layer. The township-level convergence layer is directly connected to the village-level convergence layer, i.e. the first-level convergence layer. The village-level convergence layer is directly connected to all flexible loads in the village-level administrative region. The first-level convergence layer directly connected to the dispatching layer is directly connected to all flexible loads in the A factory.

[0040] All flexible loads in the village-level administrative region correspond to the configuration of the first-level convergence layer.

[0041] All flexible loads send their state data to the corresponding primary aggregation layer according to the uplink data model, and receive the control targets issued by the corresponding primary aggregation layer according to the downlink data model.

[0042] The primary aggregation layer aggregates the state data, sends the obtained aggregated data to the township aggregation layer according to the uplink data model, receives the control targets issued by the township aggregation layer, generates the control targets according to the control strategy of the primary aggregation layer, and issues the control targets to the flexible loads. The primary aggregation layer is a village aggregation layer. The primary aggregation layer directly connected to the dispatching layer sends data to the dispatching layer, obtains the corresponding control targets, generates the control targets according to the control strategy of the primary aggregation layer, and issues the control targets to all flexible loads in the A factory.

[0043] The township aggregation layer aggregates the aggregated data of the primary aggregation layer, sends the obtained aggregated data to the county aggregation layer according to the uplink data model, receives the control targets issued by the county aggregation layer, generates the control targets according to the control strategy of the township aggregation layer, and issues the control targets to the primary aggregation layer.

[0044] The county aggregation layer aggregates the aggregated data of the township aggregation layer, sends the obtained aggregated data to the dispatching layer according to the uplink data model, receives the control targets issued by the dispatching layer, generates the control targets according to the control strategy of the county aggregation layer, and issues the control targets to the township aggregation layer.

[0045] The dispatching layer aggregates the aggregated data of the county aggregation layer, formulates the control targets in combination with the power grid electricity plan, and issues the control targets to the county aggregation layer. The uplink data model includes the following data as shown in Table 1.

[0046] Table 1

[0047]

[0048]

[0049] The downlink data model includes the total target power generation power, the total target energy storage power, and the total target load power.

[0050] The control target issued by the dispatching layer is the total target control power. The total target control power received by the aggregation layer is distributed to the next level aggregation layer. When the primary aggregation layer receives the total target control power, it is converted into the total target power generation power, the total target energy storage power, and the total target load power according to the control strategy of the primary aggregation layer, and is issued to the flexible loads.

[0051] The control strategy of the aggregation layer itself is: the aggregation layer differentiates and controls the flexible load according to the uplink data to divide the flexible load into production type load, transfer type load and consumption type load; the production type load refers to the flexible load with a power greater than 0, the transfer type load refers to the flexible load with a storage power greater than 0, and the consumption type load refers to the flexible load with a load power greater than 0; the power generation is positive, the power consumption is negative, and the regulation target is the total target control power = total target power generation + total target storage power + total target load power; the total target power generation is distributed to the production type load, the total target storage power is distributed to the transfer type load, and the total target load power is distributed to the consumption type load.

[0052] The specific production type load is a load with power supply characteristics. The transfer type load is a load that can both release and absorb electric energy, such as a battery. The consumption type load is a load that can only absorb electric energy and can actively or passively participate in the operation and regulation of the power grid through incentive rules such as electricity prices to increase or decrease the consumption amount. The total target control power is decomposed into total target power generation, total target storage power and total target load power, i.e., power generation, storage power and power consumption.

[0053] The aggregation layer also differentiates and controls according to the current power consumption period, i.e., power consumption peak, power consumption valley and power consumption flat peak.

[0054] The method for controlling the aggregation layer itself according to the power consumption period is: when in the power consumption peak, the production type load in the flexible load is controlled to maximize power generation, the consumption type load is controlled to minimize power consumption, and the transfer type load is used to supplement the difference of the total target value; when in the power consumption valley, the consumption type load in the flexible load is controlled to maximize power consumption, the transfer type load is optimized for storage under the permission of the storage, and the production type load is used to supplement the difference of the total target power; when in the power consumption flat peak, the transfer type load in the flexible load is not controlled to charge or discharge, the consumption type load is controlled to normally consume power, and the production type load is used to supplement the difference of the total target power.

[0055] The specific calculation method of the control strategy of the aggregation layer itself is as follows: as shown in Figure 2 when in the power consumption peak, the total target power generation = power generation + power generation increment, the storage SOC of the transfer type load is judged, if the storage SOC is less than or equal to the minimum allowable SOC limit, the total target storage power = 0, the total target load power = total target control power - total target power generation, if the storage SOC is greater than the minimum allowable SOC limit, the total target load power = total load power - load reduction, the total target storage power = total target control power - total target power generation - total target load power, it is judged whether the total target storage power is within the range of (storage power - storage reduction) to (storage power + storage increment), if not, the total target load power is adjusted to correct;

[0056] like Figure 3 As shown, when the electricity consumption is low, the total target load power = total load power + load increase power, and the energy storage SOC of the transfer load is determined. If the energy storage SOC is greater than or equal to the maximum allowable SOC limit, the total target energy storage power = 0. If the energy storage SOC is less than the maximum allowable SOC limit, the total target energy storage power = optimal energy storage power, and the total power generation power target = total target control power - total target energy storage power - total target energy storage power. It is determined whether the total target energy storage power is within the range of (energy storage power - energy storage decrease power) to (energy storage power + energy storage increase power). If not, the total target energy storage power is adjusted to correct it.

[0057] like Figure 4 As shown, when the level is at peak, the total target energy storage power = 0, the total target load power = the total load power, and the total target power generation power = the total target control power - the total target load power.

[0058] This method enables the flexible loads contained in the entire dispatching layer to operate within the plan, which is conducive to improving the reliability of the power grid and enhancing user trust.

[0059] New power system flexible load control system implementation example:

[0060] A novel power system flexible load control system includes a dispatching layer and a convergence layer, wherein the convergence layer includes multiple levels, wherein the first-level convergence layer is directly connected to the flexible load, and the first-level convergence layer is in communication connection with the upper-level convergence layer or the dispatching layer; the flexible load sends its own status data to the corresponding first-level convergence layer according to the uplink data model, and receives the control target issued by the corresponding first-level convergence layer according to the downlink data model; the first-level convergence layer aggregates the status data, sends the obtained aggregated data to the upper-level convergence layer or the dispatching layer according to the uplink data model, and receives the control target issued by the upper-level convergence layer or the dispatching layer, and The control target generates a control target according to its own control strategy and sends it to the flexible load; each level of convergence layer aggregates the convergence data of the next level convergence layer, sends the obtained convergence data to the upper level convergence layer or scheduling layer according to the uplink data model, and receives the control target sent by the upper level convergence layer or scheduling layer, generates the control target according to its own control strategy, and sends it to the next level convergence layer of the flexible load; the control target sent is the total power control target; the scheduling layer aggregates the convergence data of the directly connected convergence layer, combines the obtained convergence data with the power grid power consumption plan to formulate the control target, and sends it to the directly connected convergence layer. The system adopts a real-time convergence and hierarchical control method. The grid scheduling layer processes the integrated data reported by the convergence layer step by step, reduces the data overhead pressure of the grid-side scheduling layer, and improves the efficiency of grid control. The embodiment of this system refers to the embodiment of the new power system flexible load control method, and will not be repeated here.

[0061] Finally, it should be noted that the above-described embodiments are merely preferred embodiments of the present application, and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that modifications can be made to the foregoing embodiments, or other embodiments utilizing equivalents, without departing from the spirit and scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A novel flexible load regulation method for power systems, characterized by, The method comprises the following steps: the method adopts a flexible load convergence and hierarchical control mode, controls regional division of the flexible load according to geographical distribution, and the flexible load in each region is configured with a corresponding first convergence layer; The flexible load sends state data of the flexible load to the corresponding first convergence layer according to an uplink data model, and receives a control target issued by the corresponding first convergence layer according to a downlink data model; The first convergence layer converges the state data, sends the obtained convergence data to an upper-level convergence layer or a scheduling layer, receives a control target issued by the upper-level convergence layer or the scheduling layer, generates a control target of the flexible load according to a control strategy of the first convergence layer, and issues the control target to the flexible load; Each first convergence layer in a non-first convergence layer converges convergence data of a lower-level convergence layer, sends the obtained convergence data to an upper-level convergence layer or a scheduling layer, receives a control target issued by the upper-level convergence layer or the scheduling layer, generates a control target according to a control strategy of the first convergence layer, and issues the control target to the lower-level convergence layer; the issued control target is a total power control target; The scheduling layer converges convergence data of a directly connected convergence layer, formulates a control target in combination with a power grid power consumption plan, and issues the control target to the directly connected convergence layer.

2. The novel flexible load regulation method for power systems according to claim 1, characterized in that, The control strategy of the first convergence layer is that the first convergence layer differentiates and controls the flexible load into production-type load, transfer-type load and consumption-type load according to uplink data; The production-type load refers to the flexible load with a power generation greater than 0, the transfer-type load refers to the flexible load with a power generation greater than 0 and a load power greater than 0, and the consumption-type load refers to the flexible load with a load power greater than 0; The power generation is positive, the load power is negative, and the control target is: total target control power = total target power generation + total target energy storage power + total target load power.

3. The novel flexible load regulation method for power systems according to claim 2, characterized in that, The first convergence layer also differentiates and controls according to a current power consumption period, a power consumption peak, a power consumption trough and a power consumption flat peak.

4. The novel flexible load regulation method for power systems according to claim 3, characterized in that, The control strategy of the first convergence layer is as follows: When the power consumption peak is reached, the first convergence layer controls the production-type load in the flexible load to maximize the power generation, controls the consumption-type load to minimize the load power, and controls the transfer-type load to supplement a difference of the total target power; When the power consumption trough is reached, the first convergence layer controls the consumption-type load in the flexible load to maximize the load power, controls the transfer-type load to optimize the energy storage power in the case that the energy storage is allowed, and controls the production-type load to supplement the difference of the total target power; When the power consumption flat peak is reached, the first convergence layer controls the transfer-type load in the flexible load to neither consume power nor generate power, controls the consumption-type load to normally consume power, and controls the production-type load to supplement the difference of the total target power.

5. The novel power system flexible load regulation method according to claim 3 or 4, characterized in that, When in power consumption peak, control total target power generation = total power generation + power generation power increment; if the energy storage SOC is less than or equal to the minimum allowable SOC limit, control total energy storage power target = 0, total target load power = total target control power - total target power generation; if the energy storage SOC is greater than the minimum allowable SOC limit, control total target load power = total load power - load power decrement, total target energy storage power = total target control power - total target power generation - total target load power, judge whether the total target energy storage power is within the range of (energy storage power - energy storage power decrement) to (energy storage power + energy storage power increment), if not, adjust the total target load power to correct; When in power consumption valley, total target load power = total load power + load power increment; Judge the energy storage SOC of the transfer type load, if the energy storage SOC is greater than or equal to the maximum allowable SOC limit, total target energy storage power = 0, if the energy storage SOC is less than the maximum allowable SOC limit, total target energy storage power = optimal energy storage power, total power generation target = total target control power - total target energy storage power - total target energy storage power, judge whether the total target energy storage power is within the range of (energy storage power - energy storage power decrement) to (energy storage power + energy storage power increment), if not, adjust the total target energy storage power to correct; When in power consumption flat peak, total target energy storage power = 0, total target load power = total load power, total target power generation = total target control power - total target load power.

6. A novel flexible load regulation system for power system, characterized in that, The system comprises a scheduling layer and a convergence layer, wherein the convergence layer comprises multiple levels, wherein the flexible load is directly connected to a first-level convergence layer, and the first-level convergence layer is in communication connection with an upper-level convergence layer or the scheduling layer; The flexible load uploads state data of itself to the corresponding first-level convergence layer according to an uplink data model, and receives a control target issued by the corresponding first-level convergence layer according to a downlink data model; The first-level convergence layer aggregates the state data, sends the obtained aggregated data to the upper-level convergence layer or the scheduling layer, receives a control target issued by the upper-level convergence layer or the scheduling layer, generates a control target of the flexible load according to the received control target and a self control strategy, and issues the control target to the flexible load; Each first-level convergence layer in the non-first-level convergence layer aggregates the aggregated data of the lower-level convergence layer, sends the obtained aggregated data to the upper-level convergence layer or the scheduling layer, receives a control target issued by the upper-level convergence layer or the scheduling layer, generates a control target according to the control target and a self control strategy, and issues the control target to the lower-level convergence layer; the issued control target is a total power control target; The scheduling layer aggregates the aggregated data of the directly connected convergence layer, formulates a control target in combination with a power grid power consumption plan, and issues the control target to the directly connected convergence layer.

7. The novel flexible load regulation system for power system according to claim 6, characterized in that, The self control strategy of the first-level convergence layer is that the first-level convergence layer differentiates and controls the flexible load into a production type load, a transfer type load and a consumption type load according to the uplink data; The production type load refers to a flexible load with a power greater than 0, the transfer type load refers to a flexible load with a power greater than 0 and a load power greater than 0, and the consumption type load refers to a flexible load with a load power greater than 0; The power is positive, and the load power is negative, and the control target is: total target control power = total target power + total target storage power + total target load power.

8. The novel flexible load regulation system for power system according to claim 7, characterized in that, The first aggregation layer further controls according to the current power consumption period, i.e., power consumption peak, power consumption valley and power consumption flat peak.

9. The novel flexible load regulation system for power system according to claim 8, characterized in that, The control strategy of the first aggregation layer is: When the power consumption peak is reached, the production type flexible load is maximized to generate power, the consumption type flexible load is minimized to consume power, and the transfer type flexible load is used to supplement the difference between the total target power; When the power consumption valley is reached, the consumption type flexible load is maximized to consume power, the transfer type flexible load is optimized to store power, and the production type flexible load is used to supplement the difference between the total target power; When the power consumption flat peak is reached, the transfer type flexible load does not consume or generate power, the consumption type flexible load normally consumes power, and the production type flexible load is used to supplement the difference between the total target power.

10. The novel power system flexible load regulation system according to claim 8 or 9, characterized in that, The first aggregation layer is used to control the total target power = total power + power increment when the power consumption peak is reached, and the total target storage power = 0 and the total target load power = total target control power - total target power when the storage SOC is less than or equal to the minimum allowable SOC limit value. When the storage SOC is greater than the minimum allowable SOC limit value, the total target load power = total load power - load decrement, the total target storage power = total target control power - total target power - total target load power, and it is judged whether the total target storage power is within the range of (storage power - storage decrement) to (storage power + storage increment). If not, the total target load power is adjusted to correct it. When the power consumption valley is reached, the total target load power = total load power + load increment. When the power consumption flat peak is reached, the total target storage power = 0, the total target load power = total load power, and the total target power = total target control power - total target load power. ​

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