Full-voltage-level new energy active cooperative control system and method

Abstract

The invention discloses a full-voltage-level new energy active cooperative control system and method, and the method comprises the steps: carrying out the aggregation of adjustable resources corresponding to a low-voltage distributed power supply according to a region-power grid zone-220kV transformer substation aggregation mode in a low-voltage distributed power supply aggregation system, and forming a local dispatching AGC virtual unit, the local dispatching AGC virtual unit uploads aggregation information to the local dispatching data acquisition and monitoring control platform after inputting a signal, the local dispatching new energy AGC function module sends an adjustable resource control demand obtained by the aggregation information to the provincial dispatching new energy AGC function module, and meanwhile, the local dispatching new energy AGC function module receives a control target issued by the provincial dispatching new energy AGC function module. According to the invention, the regulation instruction is generated according to the emergency situation of the local main transformer of the local dispatching, the regulation instruction is issued to the unified dispatching resource for execution after the provincial dispatching unified decision, the power grid balance regulation capability is comprehensively improved, the actual operation effect verifies the effectiveness of the system and strategy, and the safe and stable operation of the power grid and the maximum consumption of new energy are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power dispatching control, and in particular to a full-voltage-level new energy active power collaborative control system and method. Background Art

[0002] Domestic new energy dispatching management generally determines provincial dispatching (unified dispatching) or local dispatching (non-unified dispatching) according to capacity size, which does not match the grid dispatching according to voltage level. At present, due to policy reasons, the active dispatching rights of new energy sites in some provincial power grids are delegated to the corresponding local dispatching for control. In recent years, in order to achieve local balance and nearby consumption of new energy, the unified dispatching new energy that has been connected to the grid or planned has been connected to the local dispatching jurisdiction. The grid has caused the region to have more and more urgent demand for unified dispatching of new energy in emergency situations such as regional power grid N-1 / N-2 failures. Therefore, in order to meet the different new energy control scenario requirements of the province and the local area, such as provincial dispatching full network peak regulation and section control, local dispatching local main distribution transformer overload risk control, it is necessary to achieve two-way coordinated support of provincial and local new energy resources. In addition, in order to further improve the balance and regulation capabilities of the power grid, it is also necessary to include low-voltage distributed new energy with many points and small single-station capacity into provincial and local coordinated control. Therefore, it is urgent to build a full-voltage level new energy active power collaborative control system architecture, and study the AGC control resource aggregation modeling and wide-area information interaction method for provincial and local new energy active power bidirectional collaborative support, laying the foundation for the next step of full-voltage level new energy active power collaborative control strategy formulation.

[0003] Document 1, "Real-time coordinated control strategy for wind power dispatched at two levels in the same control area" (Automation of Electric Power Systems, Vol. 41, No. 11, pp. 114-119, 2017), discloses a real-time coordinated control strategy for wind power dispatched at two levels in the same control area. In order to coordinate the operation of conventional energy and wind power and to absorb wind power to the maximum extent, a real-time coordinated control architecture for wind power dispatched at two levels in the same control area is proposed by making the lower-level dispatched wind power as a whole equivalent to the AGC virtual machine group of the upper-level dispatch, and put it into actual operation. The upper-level dispatcher calculates the wind power generation indicators of each lower-level dispatch in the power grid every 5 minutes based on the current operating status of the power grid, the ultra-short-term load forecast, and the actual output and forecast of wind power. After the surplus and shortage adjustment, it is sent to the lower-level dispatched wind power AGC for execution.

[0004] Document 2 "Grid-side energy storage and local active power collaborative control technology based on wide-area information interaction" (Automation of Electric Power Systems, Vol. 47, No. 17, 2023, pp. 128-136) discloses a grid-side energy storage and local active power collaborative control technology based on wide-area information interaction. Relying on the provincial / local dispatching master station AGC to realize energy storage control modeling, the wide-area information interaction technology is used to realize the rapid transmission of energy storage command information between provinces and local areas, and an energy storage control area is established outside the AGC main control area. The energy storage under the jurisdiction of the local dispatch is aggregated into equivalent centralized energy storage, and the provincial dispatch energy storage participates in the unified decision-making of the provincial dispatch together with the provincial dispatch energy storage. A storage power allocation strategy that considers the balance of the state of charge (SOC) is proposed, which improves the adjustable capacity of energy storage resources by quickly narrowing the SOC difference between the provincial / local dispatching side energy storage.

[0005] However, Documents 1 and 2 lack the architecture of a two-way coordinated support system for provincial and local new energy active power, making it difficult to meet the regional demand for coordinated new energy control in emergency situations such as regional power grid N-1 / N-2 failures, and to incorporate massive low-voltage distributed new energy into provincial and local coordinated control, thus making it impossible to determine the two-way coordinated support of provincial and local new energy resources.

[0006] Therefore, the existing architecture for the active power control of new energy participating in the power grid mainly focuses on the control of new energy within the scope of dispatch at all levels. On the one hand, there is a lack of a two-way coordinated support system for the active power of new energy from provinces and regions, which cannot meet the regional control needs for centralized new energy in emergency situations such as N-1 / N-2 failures in the regional power grid, nor can it achieve the aggregation of adjustable resources under the jurisdiction of local dispatch and send them to the provincial dispatch to meet the peak load regulation, section control and other regulation needs of the provincial dispatch. On the other hand, the existing control system architecture does not consider the inclusion of massive low-voltage distributed new energy into provincial and local coordinated control, and thus cannot support the coordinated control of active power of new energy at all voltage levels. Summary of the invention

[0007] Purpose of the invention: In order to solve the problems arising from the above-mentioned prior art, the present invention provides a full-voltage level new energy active collaborative control system and a corresponding control method.

[0008] Technical solution: According to a first aspect of the present invention, a full voltage level new energy active power coordinated control system is provided, the system comprising a dispatching master station layer, a resource aggregation layer and a resource equipment layer;

[0009] The dispatching master station layer includes a provincial dispatching control master station and N prefectural dispatching control master stations. The provincial dispatching control master station is equipped with a provincial dispatching new energy AGC function module and a provincial dispatching data acquisition and monitoring control platform; the prefectural dispatching control master station is equipped with a prefectural dispatching new energy AGC function module and a prefectural dispatching data acquisition and monitoring control platform;

[0010] The provincial dispatching new energy AGC function module is used to send control instructions to the provincial dispatching data acquisition and monitoring control platform, and the provincial dispatching data acquisition and monitoring control platform sends the control instructions to the centralized dispatching new energy in the resource equipment layer through the provincial dispatching direct dispatching method of the resource aggregation layer; and sends the control target to the local dispatching new energy AGC function module;

[0011] The provincial dispatching data collection and monitoring control platform is used to receive the aggregated information of the centralized dispatching new energy of the resource equipment layer, and send the real-time information data to the provincial dispatching new energy AGC function module;

[0012] The local dispatching and control master station is used to send adjustable resource control requirements to the provincial dispatching and control master station, and send control instructions to the local dispatching data acquisition and monitoring control platform, and the local dispatching data acquisition and monitoring control platform sends the control instructions to the low-voltage distributed power supply through the low-voltage distributed power supply aggregation system of the resource aggregation layer, or the local dispatching data acquisition and monitoring control platform sends the control instructions to the medium-voltage distributed power supply or non-centralized centralized new energy through the local dispatching direct dispatching method;

[0013] The ground-based data acquisition and monitoring control platform is used to receive aggregated information of low-voltage distributed power supplies, medium-voltage distributed power supplies and non-centralized new energy sources at the resource equipment layer, and send real-time information data to the ground-based new energy AGC functional module.

[0014] Further, including:

[0015] The provincial new energy AGC function module includes: a new energy control model synchronization unit, a new energy control information monitoring unit and a new energy provincial and local coordinated control unit;

[0016] The new energy control model synchronization unit is used to construct a new energy control model, and deploy a push end of the new energy control model on the local dispatching side, and deploy a receiving end on the provincial dispatching side, using a unique identification ID as the information interaction content of the new energy control model to ensure the unique identification of the synchronization content of each local dispatching, update the data of the local dispatching new energy AGC function module and push it to the provincial dispatching, and the provincial dispatching automatically updates the relevant data, thereby realizing real-time maintenance-free synchronization of the new energy control model information and providing model data for the new energy control information monitoring unit;

[0017] The new energy control information monitoring unit is used to monitor the operating status, control sequence, adjustable capacity, and control results of the provincial and local new energy in real time, and to collect real-time data based on the operating status of the new energy control model pushed by the local dispatch, and then write it to the provincial dispatch side based on the unique identification ID, so as to provide real-time and reliable data for the new energy provincial and local collaborative control unit;

[0018] The new energy-saving and local coordinated control unit is used to complete the final new energy coordinated closed-loop control with the local-adjusting new energy AGC functional module through the calculation of local new energy power distribution, the safety verification of control instructions and the issuance and execution, and the feedback tracking of control results. The information interaction method adopts the wide-area information interaction method for data communication.

[0019] Further, including:

[0020] The provincial dispatching new energy AGC function module supports the collaborative control scenario of multiple devices in multiple locations. The local dispatching new energy AGC function module monitors the loads of multiple devices. When one or more devices are overloaded, after the conditions for the provincial dispatching control master station to participate in the collaborative control are met, the device overload collaborative control request set and the station control target set are sent to the provincial dispatching through wide area information interaction, and are issued for execution after confirmation by the provincial dispatching operation personnel. The device overload collaborative control request set is a request data set for collaborative control of one or more overloaded devices, and the station control target set is a basic information set corresponding to one or more overloaded devices.

[0021] On the other hand, the present invention also provides a full voltage level new energy active coordinated control method, the method comprising:

[0022] The adjustable resources corresponding to the low-voltage distributed power supply are aggregated according to the region-grid division-220 kV substation aggregation method in the low-voltage distributed power supply aggregation system, and a local-adjustment AGC virtual machine group is formed. After the local-adjustment AGC virtual machine group is put into operation, the aggregation information is sent to the local-adjustment data acquisition and monitoring control platform, so that the local-adjustment data acquisition and monitoring control platform sends the aggregation information to the local-adjustment new energy AGC functional module. The local-adjustment new energy AGC functional module sends the adjustable resource control demand obtained from the aggregation information to the provincial-adjustment new energy AGC functional module. At the same time, the local-adjustment new energy AGC functional module receives the control target issued by the provincial-adjustment new energy AGC functional module.

[0023] Further, including:

[0024] The adjustable resources corresponding to the low-voltage distributed power sources are aggregated according to the region-grid partition-220 kV substation aggregation mode in the low-voltage distributed power source aggregation system, specifically including:

[0025] Rated capacity of equivalent new energy source E of ground-controlled 220 kV substation m m , Active output P m , adjust the upper limit and adjust the lower limit It is expressed as:

[0026]

[0027] Where: I is the number of new energy stations under the jurisdiction of the local survey; E m,i , P m,i , The local 220 kV substation m is responsible for the rated capacity, active output, upper and lower limits of regulation of the new energy station i.

[0028] Further, including:

[0029] The ground-adjusting AGC virtual machine group input signal must meet the following conditions at the same time: (1) the ground-adjusting new energy AGC function module is in a closed-loop state; (2) the current control mode of the ground-adjusting field group is "provincial-ground coordination"; (3) there is a controllable field station in the current field group, that is, the controllable field station is put into the first adjustment mode. In this application, the first adjustment mode is a mode in the field station, which is the "automatic" adjustment mode;

[0030] Specifically, when the control mode of the current ground-adjusting station group is "provincial-local coordination", the ground-adjusting new energy AGC function module automatically puts all controllable stations under the station group into "automatic" adjustment mode; for non-controllable stations, the ground-adjusting new energy AGC function module sets its default mode to "automatic", and automatically switches to "automatic" adjustment mode after the ground-adjusting AGC virtual machine is remotely put into operation.

[0031] Further, including:

[0032] The target output of the new energy stations under the jurisdiction of the local dispatch is divided into base power and adjustment power. The base power is determined by the planning curve, market clearing results and current actual output. The adjustment power is uniformly decided and allocated by the local dispatch new energy AGC function module according to the regulation needs of different scenarios;

[0033] The base point power corresponding to the ground-adjusting AGC virtual machine in the "automatic" adjustment mode is the current actual output, and the adjustment power is a single adjustment step, that is, the adjustment power per minute of the new energy station under the normal adjustment rate; therefore, the target output is expressed as:

[0034] Target power = base point power + adjustment power.

[0035] Further, including:

[0036] The base point power processing method corresponding to the ground-adjusting AGC virtual machine group in the "automatic" adjustment mode is:

[0037] The provincial dispatching control master station switches different control modes under different working conditions, and the control instruction generation logic in different modes is different, that is, the current provincial dispatching control master station switches between the "automatic" adjustment mode and the "test" adjustment mode. At this time, the local dispatching control master station cannot perceive the change of the control mode of the provincial dispatching control master station. In order to ensure its online availability after being put into provincial dispatching control, the "automatic" adjustment mode base point of the local dispatching new energy AGC function module is adjusted, that is,

[0038] In the "provincial and local coordination" mode, the adjustment instructions are: when the local AGC virtual machine is adjusted to install the capacity, the base power value of the new energy station in the "automatic" adjustment mode is also updated to the installed capacity to break through the step constraint limit, and the installed capacity is issued as the control instruction;

[0039] When the coordination instruction in the provincial and local coordinated mode is less than the zone installed capacity, the base point power value of the new energy station in the "automatic" adjustment mode is restored to the current output.

[0040] Further, including:

[0041] The issuance of the adjustment instruction is processed in the following manner:

[0042] Because the provincial dispatching instructions are issued periodically, when the local dispatching is put into provincial dispatching control, the local dispatching will not immediately issue and update the control instructions. At this time, in response to this situation, the local dispatching new energy AGC function module will still maintain the control instructions before the local dispatching AGC virtual machine group is put into operation until it receives new instructions issued by the provincial dispatching new energy AGC function module. It will not execute historical residual instructions, thereby avoiding erroneous control behavior.

[0043] Furthermore, the control method also includes:

[0044] The local new energy AGC function module receives the control target issued by the provincial new energy AGC function module, and decomposes the command to the non-centralized centralized new energy and low-voltage distributed power aggregation system;

[0045] The local-adjustment new energy AGC functional module receives the distributed power adjustable resource aggregation information sent by the low-voltage distributed power aggregation system in accordance with the substation-medium voltage feeder-distribution station aggregation method, and sends the distributed power aggregation adjustment target to the low-voltage distributed power aggregation system. Among them, the local-adjustment new energy AGC functional module and the low-voltage distributed power aggregation systems inside and outside the company use wide-area information interaction to communicate data.

[0046] Further, including:

[0047] The distributed power adjustable resource aggregation information sent by the low-voltage distributed power aggregation system in the substation-medium voltage feeder-distribution station area aggregation mode specifically includes:

[0048] Aggregate the low-voltage renewable energy under the distribution station area and send it to the ground-adjusting renewable energy AGC function module as the equivalent renewable energy corresponding to the ground-adjusting renewable energy AGC function module side. The rated capacity E of the equivalent renewable energy in the distribution station area n is n , Active output P n , adjust the upper limit Adjust lower limit Specifically expressed as:

[0049]

[0050] Where: J is the number of low-voltage new energy stations under the distribution area; E n,j , P n,j , It is the rated capacity, active output, upper and lower regulation limits of the low-voltage new energy station j under the jurisdiction of the distribution station area n.

[0051] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0052] The present invention adopts the "provincial dispatch-local dispatch" coordination and "centralized-distributed" coordination technical routes, designs a "1+N+X" active coordinated control system architecture for new energy sources of all voltage levels, and invents AGC aggregation modeling and wide-area information interaction methods for new energy sources of all voltage levels to support the peak-shaving needs of the entire network, the active control of provincial and local new energy two-way coordinated support for the over-limit control needs of the main grid section, and the provincial and local coordinated control for regional equipment overload risk control and other scenario requirements.

[0053] The present invention deploys new energy automatic generation control (AGC) modules at provincial and local dispatching master stations to realize an active control system with provincial and local two-way collaborative support for new energy at all voltage levels. That is, the local dispatching aggregates the adjustable resources under its jurisdiction and sends them to the provincial dispatching to meet the provincial dispatching's regulation needs, and generates regulation instructions for emergency situations such as overload of local main transformer N-1 of the local dispatching. After unified decision-making by the provincial dispatching, the instructions are sent to the unified dispatching resources for execution, thereby comprehensively improving the balanced regulation capability of the power grid. The actual operating effect verifies the effectiveness of the invented system and strategy, ensuring the safe and stable operation of the power grid and the maximum absorption of new energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a schematic diagram of the structure of the full voltage level new energy active power cooperative control system of the present invention;

[0055] Figure 2 This is a schematic diagram of the structure of the new energy AGC virtual machine group according to an embodiment of the present invention;

[0056] Figure 3A schematic diagram of a wide area information interaction module for supporting the provincial adjustment strategy of local adjustment according to an embodiment of the present invention;

[0057] Figure 4 It is a schematic diagram of a wide area information interaction module for supporting provincial dispatching and local dispatching strategy according to an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] like Figure 1 As shown, the present invention provides a full voltage level new energy active power coordinated control system, adopts the "provincial regulation-local regulation" coordinated and "centralized-distributed" coordinated technical routes, and constructs the "1+N+X" full voltage level new energy active power control system overall architecture as shown in the attached Figure 1 As shown, it consists of the scheduling master station layer, resource aggregation layer and resource equipment layer.

[0060] The dispatching master station layer includes 1 provincial dispatching control master station and N prefectural dispatching control master stations.

[0061] The resource aggregation layer refers to the internal and external systems of the power grid company that aggregate low-voltage distributed power sources;

[0062] The resource equipment layer includes centralized and distributed new energy sources of all voltage levels, which overall realizes the observability, measurability, adjustability and controllability of new energy sources of all voltage levels.

[0063] Specifically, the system includes a scheduling master layer, a resource aggregation layer, and a resource equipment layer;

[0064] The dispatching master station layer includes a provincial dispatching control master station and N prefectural dispatching control master stations. The provincial dispatching control master station is equipped with a provincial dispatching new energy AGC function module and a provincial dispatching data acquisition and monitoring control platform; the prefectural dispatching control master station is equipped with a prefectural dispatching new energy AGC function module and a prefectural dispatching data acquisition and monitoring control platform, i.e., a SCADA platform.

[0065] The provincial dispatching new energy AGC function module is used to send control instructions to the provincial dispatching data acquisition and monitoring control platform, and the provincial dispatching data acquisition and monitoring control platform sends the control instructions to the centralized dispatching new energy in the resource equipment layer through the provincial dispatching direct dispatching method of the resource aggregation layer; and sends the control target to the local dispatching new energy AGC function module;

[0066] The provincial dispatching data collection and monitoring control platform is used to receive the aggregated information of the centralized dispatching new energy of the resource equipment layer, and send the real-time information data to the provincial dispatching new energy AGC function module;

[0067] The local dispatching and control master station is used to send adjustable resource control requirements to the provincial dispatching and control master station, and send control instructions to the local dispatching data acquisition and monitoring control platform, and the local dispatching data acquisition and monitoring control platform sends the control instructions to the low-voltage distributed power supply through the low-voltage distributed power supply aggregation system of the resource aggregation layer, or the local dispatching data acquisition and monitoring control platform sends the control instructions to the medium-voltage distributed power supply or non-centrally dispatched centralized new energy, that is, local dispatching new energy, through the local dispatching direct dispatching method;

[0068] The ground-based data acquisition and monitoring control platform is used to receive aggregated information of low-voltage distributed power supplies, medium-voltage distributed power supplies and non-centralized new energy sources at the resource equipment layer, and send real-time information data to the ground-based new energy AGC functional module.

[0069] Among them, according to the above-mentioned overall architecture of the new energy active power control system, the new energy of the lower-level dispatching (including local-level dispatching, internal / external systems of the power grid company that aggregates low-voltage distributed power sources) is aggregated step by step according to a certain whole to be equivalent to the AGC virtual machine group of the upper-level dispatching, and participates in the unified decision-making of the upper-level dispatching together with the upper-level dispatching new energy, thereby realizing the AGC modeling of new energy of all voltage levels, laying the foundation for the subsequent formulation of new energy active collaborative control strategies of all voltage levels.

[0070] Then, relying on the provincial and local dispatching master station AGC, new energy control modeling is realized. The design uses wide-area information interaction technology to realize the on-demand and rapid transmission of new energy command information data between the provincial and local dispatching systems, and between local-level dispatching and the internal / external systems of the power grid company that aggregates low-voltage distributed power sources. Compared with the traditional telemetry forwarding form, wide-area information interaction eliminates the need for model data to be processed and forwarded by data acquisition and monitoring (SCADA), front-end and other applications, which can greatly shorten data transmission delay and improve the regulation and control capabilities of new energy resources.

[0071] Furthermore, in this embodiment, the system specifically includes:

[0072] (1) Provincial dispatching new energy AGC function module: At the provincial dispatching control master station, hereinafter referred to as the provincial dispatching master station, the provincial dispatching new energy AGC function module and the provincial dispatching data acquisition and monitoring control (SCADA) platform are constructed to realize the direct acquisition of unified dispatching new energy data, full network peak regulation and section control, and provincial and local coordinated regulation. The provincial dispatching new energy AGC function module is mainly responsible for the construction of the unified dispatching new energy control model, and at the same time receives the aggregated information of non-unified dispatching new energy and low-voltage distributed power adjustable resources sent by the local dispatching new energy AGC function module, and decomposes the instructions and sends them to the unified dispatching new energy and local dispatching new energy AGC function modules.

[0073] Specifically, it includes: a new energy control model synchronization unit, a new energy control information monitoring unit and a new energy provincial and local coordinated control unit;

[0074] The new energy control model synchronization unit is used to construct a new energy control model, and deploy a push end of the new energy control model on the local dispatching side, and deploy a receiving end on the provincial dispatching side, using a unique identification ID as the information interaction content of the new energy control model to ensure the unique identification of the synchronization content of each local dispatching, update the data of the local dispatching new energy AGC function module and push it to the provincial dispatching, and the provincial dispatching automatically updates the relevant data, thereby realizing real-time maintenance-free synchronization of the new energy control model information and providing model data for the new energy control information monitoring unit;

[0075] Among them, the functions and effects of the new energy control model are mainly reflected in the following five points:

[0076] (1) Real-time monitoring and data synchronization:

[0077] The new energy control model synchronization unit is responsible for building and maintaining the new energy control model and ensuring data synchronization between local and provincial dispatches. Through the unique identification ID, data can be updated and pushed effectively to ensure information consistency between local dispatches.

[0078] (2) Status monitoring and data collection:

[0079] The control information monitoring unit monitors the operating status of new energy in real time, including adjustable capacity, control sequence and control results. This process relies on real-time data collection of the control model status pushed by the ground control, thus providing a reliable basis for subsequent decision-making.

[0080] (3) Collaborative control and decision support:

[0081] The provincial and local coordinated control unit realizes the power distribution calculation of new energy, the safety verification and issuance and execution of control instructions, and the feedback tracking of control results. This ensures the closed-loop control between the local regulation new energy AGC function module and the provincial regulation, and enhances the coordinated regulation capability of the system.

[0082] (4) Decision-making ability to deal with emergencies:

[0083] When the power grid faces an emergency (such as N-1 / N-2 failure), the new energy control model can generate regulation instructions to support rapid collaborative decision-making between provincial and local regulators to improve the regulation capability and stability of the power grid.

[0084] (5) Support the integration of low-voltage distributed new energy:

[0085] The new energy control model can incorporate low-voltage distributed new energy into the control system, improve the dispatching capability of small and dispersed energy resources, and make the regulation capability of the overall power grid more comprehensive and flexible.

[0086] The function and role of the new energy control model in the system is to provide real-time monitoring, data synchronization, decision support and emergency response capabilities to ensure the safe, stable and efficient operation of the power grid under various circumstances.

[0087] The new energy control information monitoring unit is used to monitor the operating status, control sequence, adjustable capacity, and control results of the provincial and local new energy in real time, and to collect real-time data based on the operating status of the new energy control model pushed by the local dispatch, and then write it to the provincial dispatch side based on the unique identification ID, so as to provide real-time and reliable data for the new energy provincial and local collaborative control unit;

[0088] The new energy-saving and local coordinated control unit is used to complete the final new energy coordinated closed-loop control with the local adjustment new energy AGC function module through the calculation of local new energy power distribution, the safety verification of control instructions and the issuance and execution, and the feedback tracking of control results. The information interaction method adopts the wide area information interaction method for data communication, such as Figure 3 As shown, multiple local dispatching parties act as data providers and executors of new energy provincial and local coordinated control, including new energy control model push and new energy control instruction response.

[0089] Among them, the wide area information interaction includes three parts: wide area message bus interface, wide area message subscription / publishing, and wide area message agent. The wide area message bus interface provides applications with functions such as subscription, unsubscription, sending, and receiving of wide area messages. The wide area message agent is mainly used to push wide area messages across power grid dispatching systems, and provides functions such as wide area message reliable transmission mechanism and wide area message tracking. Both wide area message subscription / publishing and wide area message agent are located on the communication agent server to provide data communication services between power grid dispatching systems.

[0090] Furthermore, in this embodiment, the provincial dispatching new energy AGC function module supports the coordinated control scenario of multiple dispatching and multiple devices. The local dispatching new energy AGC function module monitors the loads of multiple devices. When one or more devices are overloaded, after the conditions for the provincial dispatching control master station to participate in the coordinated control are met, the device overload coordinated control request set and the station control target set are sent to the provincial dispatching through wide area information interaction, and are issued for execution after confirmation by the provincial dispatching operation personnel. Figure 4 As shown, considering that multiple devices of multiple local dispatches are overloaded and need provincial dispatch collaborative control, the provincial dispatch new energy AGC should support the collaborative control scenario of multiple local dispatches and multiple devices. Several overloaded devices form a provincial dispatch station control target set and a device overload collaborative control request set, which are transmitted to the provincial dispatch AGC in the form of wide area information interaction, and the control request is confirmed, and then allocated to the corresponding station control target. In this embodiment, there can also be multiple local dispatches, which are uniformly sent to the provincial dispatch AGC.

[0091] (2) Local dispatching new energy AGC functional module: At the local dispatching and control master station, hereinafter referred to as the local dispatching master station, the local dispatching new energy AGC functional module and the local dispatching data acquisition and monitoring control platform, namely the local dispatching SCADA platform, are constructed to realize non-centralized dispatching of new energy, including centralized and medium-voltage distributed power sources, direct data acquisition and low-voltage distributed power resource aggregation, and provincial and local coordinated command decomposition and execution.

[0092] The local new energy AGC functional module is mainly responsible for the construction of non-centrally controlled new energy control models. At the same time, it aggregates the adjustable resources of non-centrally controlled new energy and low-voltage distributed power sources and sends them to the provincial new energy AGC functional module, receives the control targets issued by the provincial control, and decomposes the instructions to the non-centrally controlled new energy and low-voltage distributed power aggregation system.

[0093] The functions and effects of the non-coordinated new energy control model are mainly reflected in the following aspects:

[0094] (1) Autonomous adjustment and optimization:

[0095] The non-coordinated new energy control model allows each new energy unit (such as distributed generation, energy storage equipment, etc.) to adjust itself and optimize according to its own status and needs. This can improve the overall energy utilization efficiency and reduce the burden of central dispatch.

[0096] (2)Flexible response to changing demand:

[0097] The model has the ability to quickly respond to changes in market demand and power load, and can adjust power generation and power consumption strategies in a timely manner to meet power demand in local areas.

[0098] (3) Integrate multiple new energy resources:

[0099] The non-coordinated model supports the integration of various types of renewable energy (such as wind energy, solar energy, etc.), allowing different types of power generation units to work together in the same system, improving the overall flexibility and reliability of the system.

[0100] (4) Data sharing and decision support:

[0101] Although the non-coordinated new energy model is relatively independent, it can still share data with other systems to support decision-making. This data sharing mechanism helps to better understand and predict the production and consumption patterns of new energy.

[0102] (5) Dealing with volatility and uncertainty:

[0103] Due to the volatility of renewable energy (such as wind and solar energy), the non-coordinated dispatching model can be adjusted according to real-time meteorological and load data, thereby effectively coping with the uncertainty of power supply and improving the stability of the power grid.

[0104] (6) Promoting the consumption of renewable energy:

[0105] Through flexible adjustment capabilities, the non-coordinated new energy control model can effectively promote the consumption of renewable energy, reduce the use of traditional energy, and improve the sustainability of the overall energy structure.

[0106] The non-coordinated new energy control model enhances the effective utilization and management of new energy resources and promotes the transformation and upgrading of the power system through functions such as autonomous regulation, flexible response and data sharing.

[0107] The ground-based SCADA platform provides models, data, human-machine interface, network communication, system management and other services to realize the "direct control, direct procurement, direct delivery" of non-centralized centralized new energy and medium-voltage distributed power sources, as well as information interaction with low-voltage distributed power aggregation systems.

[0108] Specifically, the units involved in the specific structure of the local dispatching new energy AGC functional module are similar to the wide-area information interaction of the local dispatching support provincial dispatching strategy. The local dispatching new energy AGC functional module and the low-voltage distributed power supply aggregation system are designed to include three core modules: low-voltage distributed power supply control model synchronization, low-voltage distributed power supply control information monitoring, and low-voltage distributed power supply collaborative control. The information interaction of other modules is realized through the wide-area information interaction module, which will not be repeated here.

[0109] (3) Resource aggregation: The low-voltage distributed power aggregation system inside and outside the power grid company is responsible for the low-voltage distributed power data collection and the construction of the new energy control model. It aggregates the adjustable resources of the low-voltage distributed power to the ground-adjusting new energy AGC functional module, and at the same time receives the control targets issued by the ground-adjusting new energy AGC functional module and decomposes and executes them.

[0110] (4) Coordinated control: First, the local dispatching master station aggregates the adjustable resources of non-centrally dispatched new energy and low-voltage distributed power sources according to the region-grid division-220 kV substation and sends them to the provincial dispatching master station. The provincial dispatching master station generates adjustment instructions based on the adjustment needs such as peak regulation or section control of the entire network, taking into account the adjustment capabilities and priorities of the centralized and non-centrally dispatched resources, and sends them to the centralized and local dispatching master stations for execution. The local dispatching master station's new energy AGC function module decomposes the instructions according to the adjustment capabilities and priorities of different resources and sends them to the non-centrally dispatched new energy and low-voltage distributed power aggregation system for execution, and feeds back the execution status to the provincial dispatching master station.

[0111] Specifically, the adjustable resources corresponding to the low-voltage distributed power supply are aggregated according to the region-grid division-220 kV substation aggregation method in the low-voltage distributed power supply aggregation system, and a local-adjustment AGC virtual machine group is formed. After the local-adjustment AGC virtual machine group is put into operation, the aggregated information is sent to the local-adjustment data acquisition and monitoring control platform, so that the local-adjustment data acquisition and monitoring control platform sends the aggregated information to the local-adjustment new energy AGC functional module. The local-adjustment new energy AGC functional module sends the adjustable resource control demand obtained from the aggregated information to the provincial-adjustment new energy AGC functional module. At the same time, the local-adjustment new energy AGC functional module receives the control target issued by the provincial-adjustment new energy AGC functional module.

[0112] In this embodiment, Figure 2 As shown, multiple local-adjustment new energy sources are aggregated into a corresponding local-adjustment aggregate control object A, and other multiple local-adjustment new energy sources are aggregated into a corresponding local-adjustment aggregate control object B. The local-adjustment aggregate control objects A and B are sent to the local-adjustment AGC virtual machine group according to the local-adjustment new energy regulation targets. That is, the local-adjustment AGC virtual machine group virtualizes the aggregate control objects into local-adjustment new energy control objects according to actual output, rated capacity, regulation range, remote controllable signals, etc., and multiple unified-adjustment new energy sources are aggregated into corresponding unified-adjustment new energy control objects.

[0113] Secondly, when the main transformers and other equipment in the regional power grid exceed the time limit, the local dispatching master station cannot directly adjust the unified dispatching of new energy output. The design comprehensively considers the regulation capabilities and priorities of unified dispatching and non-unified dispatching resources, generates unified dispatching new energy regulation instructions and sends regulation requests to the superior dispatching (provincial dispatching). After confirmation by the provincial dispatching master station, the unified dispatching new energy output is issued with regulation targets to implement closed-loop control, thereby achieving main transformer overload risk control.

[0114] The above-mentioned communication between the provincial new energy AGC function module and the local new energy AGC function module is as follows:

[0115] like Figure 2As shown in the figure, the local dispatching new energy AGC functional module aggregates the non-centrally dispatched new energy and low-voltage distributed power adjustable resources according to the region-grid division-220 kV substation to form an AGC virtual machine group, and sends it to the provincial dispatching new energy AGC functional module, and at the same time receives the control targets issued by the provincial dispatching. Therefore, the provincial and local new energy AGC coordination mainly includes two parts: "sending" and "issuing".

[0116] The information exchange between the provincial and local new energy AGCs adopts wide-area information exchange. The aggregated information sent from the local new energy AGC to the provincial new energy AGC is shown in the following Appendix 1.

[0117] Appendix 1 Aggregation information of local new energy AGC sent to provincial new energy AGC

[0118]

[0119] Aggregate the renewable energy under the jurisdiction of the local dispatch and send it to the provincial dispatch as the equivalent renewable energy corresponding to the provincial dispatch. Rated capacity E of the equivalent renewable energy of the local dispatch 220 kV substation m m , Active output P m , adjust the upper limit Adjust lower limit for:

[0120]

[0121]

[0122] Where: I is the number of new energy stations under the jurisdiction of the local survey; E m,i , P m,i , The local 220 kV substation m is responsible for the rated capacity, active output, upper and lower limits of regulation of the new energy station i.

[0123] The provincial new energy AGC sends the local new energy AGC information as shown in Appendix 2.

[0124] Appendix 2 Provincial New Energy AGC Information Dispatched to Local New Energy AGC

[0125]

[0126] In addition, in order to realize the application and call of provincial dispatching resources by the region, the local dispatching new energy AGC needs to establish an equipment over-limit control model and a provincial dispatching station model that participates in the over-limit control of regional power grid main transformers and other equipment, which is used to monitor equipment over-limit and calculate station control targets.

[0127] The provincial dispatching side has added a new equipment over-limit control provincial and local coordination information table, as shown in Appendix 3, which is used to access the equipment over-limit control coordination requests of various local dispatching stations.

[0128] Appendix 3 Provincial and local coordination information table for equipment over-limit control

[0129]

[0130]

[0131] When the central dispatching new energy station participates in provincial and local coordination, the base power mode is adopted. The provincial dispatching AGC automatically modifies the base power of the provincial dispatching station according to the control target sent by the local dispatching, so as to realize provincial and local closed-loop coordinated control of equipment exceeding the limit. The control model of the new energy station is expanded on the provincial dispatching side, and the information shown in the following Appendix 4 is added.

[0132] Appendix 4 New information on the provincial new energy station model

[0133]

[0134] Among them, the ground-controlled AGC virtual machine group input signal must meet the following three conditions at the same time: 1) The closed-loop state of the ground-controlled AGC system is "yes"; 2) The control mode of the ground-controlled field group is "provincial-ground coordination"; 3) The field group has an adjustable field station, that is, an "automatic" mode field station. Among them, there are two important logics in the process of controllable signal switching:

[0135] 1) When the control mode of the field group is set to "provincial and local coordination", the system automatically puts all controllable fields under the field group into "automatic" adjustment mode; for non-controllable fields, the system will set their default mode to "automatic", and automatically switch to "automatic" adjustment mode after they are remotely put into operation;

[0136] In order to achieve multi-objective coordinated control of new energy in a land-saving manner, the target output of new energy stations is divided into base power and adjustment power. The base power can be determined by the planning curve, market clearing results, current actual output, etc.; according to the adjustment requirements of different scenarios, the adjustment power is uniformly decided and allocated by AGC. The base power of new energy in the "automatic" adjustment mode is the current actual output, and the adjustment power is generally a single adjustment step (generally taking the adjustment power per minute of the new energy station under the normal adjustment rate).

[0137] Target power = base point power + adjustment power (5)

[0138] 2) Power processing of the base point in "automatic" mode of the local dispatching AGC virtual machine group: the provincial dispatching station will switch to different control modes under different working conditions, and the control command generation logic in different modes is different. The current provincial dispatching station generally switches between the "automatic" mode and the "test" mode. The command generation logic of the two is very different, and the local dispatching cannot perceive the changes in the provincial dispatching control mode. In order to ensure its online availability after being put into provincial dispatching control, the "automatic" mode base point in the local dispatching AGC is adjusted. That is, in the provincial-local coordination mode, when the adjustment instruction is the installed capacity of the local dispatching AGC virtual machine, the base point power value of the new energy station in the "automatic" mode is also updated to the installed capacity to break through the step constraint and issue the installed capacity as the control instruction; when the coordination instruction in the provincial-local coordination mode is less than the partition installed capacity, the base point power value of the new energy station in the "automatic" mode is restored to the current output.

[0139] 3) Since provincial control instructions are issued periodically, when the local control is put into provincial control, the local control may not immediately issue and update the control instructions. In this case, the local control AGC system will still maintain the control instructions before the operation until receiving the instructions issued by the provincial control, and will not execute the historical residual instructions to avoid erroneous control behavior.

[0140] The data communication between the ground-adjusting new energy AGC function module and the low-voltage distributed power aggregation system specifically includes:

[0141] The local regulation new energy AGC function module receives the control targets issued by the provincial regulation, and decomposes the instructions to the non-centrally regulated new energy and low-voltage distributed power aggregation system. The local regulation new energy AGC function module receives the distributed power adjustable resource aggregation information sent by the low-voltage distributed power aggregation system according to the substation-medium voltage feeder-distribution station area, and sends the distributed power aggregation adjustment targets to the low-voltage distributed power aggregation system, as shown in Appendix 5.

[0142] Appendix 5 Aggregation information of low voltage distributed power generation aggregation system sent to ground-adjusting new energy AGC

[0143]

[0144]

[0145] The wide-area information interaction method is adopted between the Ground-tuning New Energy AGC and the company's internal and external low-voltage distributed power aggregation systems, as shown in Appendix 6.

[0146] Appendix 6 Regulation targets for low-voltage distributed power aggregation systems issued by the local new energy AGC

[0147]

[0148] The low-voltage renewable energy under the distribution area is aggregated and sent to the ground dispatching station as the equivalent renewable energy corresponding to the ground dispatching station. The rated capacity E of the equivalent renewable energy of the distribution area n n , Active output P n , adjust the upper limit Adjust lower limit for:

[0149]

[0150] Where: J is the number of low-voltage new energy stations under the distribution area; E n,j , P n,j , It is the rated capacity, active output, upper and lower regulation limits of the low-voltage new energy station j under the jurisdiction of the distribution station area n.

[0151] On the other hand, the present invention also provides a full voltage level new energy active coordinated control method, the method comprising:

[0152] The adjustable resources corresponding to the low-voltage distributed power supply are aggregated according to the region-grid division-220 kV substation aggregation method in the low-voltage distributed power supply aggregation system, and a local-adjustment AGC virtual machine group is formed. After the local-adjustment AGC virtual machine group is put into operation, the aggregation information is sent to the local-adjustment data acquisition and monitoring control platform, so that the local-adjustment data acquisition and monitoring control platform sends the aggregation information to the local-adjustment new energy AGC functional module. The local-adjustment new energy AGC functional module sends the adjustable resource control demand obtained from the aggregation information to the provincial-adjustment new energy AGC functional module. At the same time, the local-adjustment new energy AGC functional module receives the control target issued by the provincial-adjustment new energy AGC functional module.

[0153] Further, including:

[0154] The adjustable resources corresponding to the low-voltage distributed power sources are aggregated according to the region-grid partition-220 kV substation aggregation mode in the low-voltage distributed power source aggregation system, specifically including:

[0155] Rated capacity of equivalent new energy source E of ground-controlled 220 kV substation m m , Active output P m , adjust the upper limit and adjust the lower limit It is expressed as:

[0156]

[0157] Where: I is the number of new energy stations under the jurisdiction of the local survey; E m,i , P m,i , The local 220 kV substation m is responsible for the rated capacity, active output, upper and lower limits of regulation of the new energy station i.

[0158] Further, including:

[0159] The ground-adjusting AGC virtual machine group input signal must meet the following conditions at the same time: (1) the ground-adjusting new energy AGC function module is in a closed-loop state; (2) the current control mode of the ground-adjusting field group is "provincial-ground coordination"; (3) there is a controllable field station in the current field group, that is, the controllable field station is put into the first adjustment mode. In this application, the first adjustment mode is a mode in the field station, which is the "automatic" adjustment mode;

[0160] Specifically, when the control mode of the current ground-adjusting station group is "provincial-local coordination", the ground-adjusting new energy AGC function module automatically puts all controllable stations under the station group into "automatic" adjustment mode; for non-controllable stations, the ground-adjusting new energy AGC function module sets its default mode to "automatic", and automatically switches to "automatic" adjustment mode after the ground-adjusting AGC virtual machine is remotely put into operation.

[0161] Further, including:

[0162] The target output of the new energy stations under the jurisdiction of the local dispatch is divided into base power and adjustment power. The base power is determined by the planning curve, market clearing results and current actual output. The adjustment power is uniformly decided and allocated by the local dispatch new energy AGC function module according to the regulation needs of different scenarios;

[0163] The base point power corresponding to the ground-adjusting AGC virtual machine in the "automatic" adjustment mode is the current actual output, and the adjustment power is a single adjustment step, that is, the adjustment power per minute of the new energy station under the normal adjustment rate; therefore, the target output is expressed as:

[0164] Target power = base point power + adjustment power.

[0165] Further, including:

[0166] The base point power processing method corresponding to the ground-adjusting AGC virtual machine group in the "automatic" adjustment mode is:

[0167] The provincial dispatching control master station switches different control modes under different working conditions, and the control instruction generation logic in different modes is different, that is, the current provincial dispatching control master station switches between the "automatic" adjustment mode and the "test" adjustment mode. At this time, the local dispatching control master station cannot perceive the change of the control mode of the provincial dispatching control master station. In order to ensure its online availability after being put into provincial dispatching control, the "automatic" adjustment mode base point of the local dispatching new energy AGC function module is adjusted, that is,

[0168] In the "provincial and local coordination" mode, the adjustment instructions are: when the local AGC virtual machine is adjusted to install the capacity, the base power value of the new energy station in the "automatic" adjustment mode is also updated to the installed capacity to break through the step constraint limit, and the installed capacity is issued as the control instruction;

[0169] When the coordination instruction in the provincial and local coordinated mode is less than the zone installed capacity, the base point power value of the new energy station in the "automatic" adjustment mode is restored to the current output.

[0170] Further, including:

[0171] The issuance of the adjustment instruction is processed in the following manner:

[0172] Because the provincial dispatching instructions are issued periodically, when the local dispatching is put into provincial dispatching control, the local dispatching will not immediately issue and update the control instructions. At this time, in response to this situation, the local dispatching new energy AGC function module will still maintain the control instructions before the local dispatching AGC virtual machine group is put into operation until it receives new instructions issued by the provincial dispatching new energy AGC function module. It will not execute historical residual instructions, thereby avoiding erroneous control behavior.

[0173] Furthermore, the control method also includes:

[0174] The local new energy AGC function module receives the control target issued by the provincial new energy AGC function module, and decomposes the command to the non-centralized centralized new energy and low-voltage distributed power aggregation system;

[0175] The local-adjustment new energy AGC functional module receives the distributed power adjustable resource aggregation information sent by the low-voltage distributed power aggregation system in accordance with the substation-medium voltage feeder-distribution station aggregation method, and sends the distributed power aggregation adjustment target to the low-voltage distributed power aggregation system. Among them, the local-adjustment new energy AGC functional module and the low-voltage distributed power aggregation systems inside and outside the company use wide-area information interaction to communicate data.

[0176] Further, including:

[0177] The distributed power adjustable resource aggregation information sent by the low-voltage distributed power aggregation system in the substation-medium voltage feeder-distribution station area aggregation mode specifically includes:

[0178] Aggregate the low-voltage renewable energy under the distribution station area and send it to the ground-adjusting renewable energy AGC function module as the equivalent renewable energy corresponding to the ground-adjusting renewable energy AGC function module side. The rated capacity E of the equivalent renewable energy in the distribution station area n is n , Active output P n , adjust the upper limit Adjust lower limit Specifically expressed as:

[0179]

[0180] Where: J is the number of low-voltage new energy stations under the distribution area; E n,j , P n,j , It is the rated capacity, active output, upper and lower regulation limits of the low-voltage new energy station j under the jurisdiction of the distribution station area n.

[0181] The other technical features involved in the full-voltage-level new energy active collaborative control method of the present invention are similar to those of the corresponding full-voltage-level new energy active collaborative control system, and will not be repeated in this application.

[0182] In order to reflect the operating effect of the above system, this application has done the following verification, specifically:

[0183] Step 1 Design of the coordinated control architecture of new energy active power of Jiangsu power grid at all voltage levels: Adopt the "provincial dispatch-local dispatch" coordination and "centralized-distributed" coordination technical routes to build the overall architecture of the "1+13+3" full voltage level new energy active power control system, which consists of the dispatching master station layer, resource aggregation layer and resource equipment layer. The dispatching master station layer includes 1 provincial dispatching control master station and 13 local dispatching control master stations. The resource aggregation layer refers to the internal and external systems of the power grid company that aggregate 3 low-voltage distributed power sources. The resource equipment layer is a full voltage level new energy including centralized and distributed ones, which realizes the observability, measurability, adjustability and controllability of new energy at all voltage levels as a whole.

[0184] Step 2: Full voltage level new energy AGC aggregation modeling: According to the overall architecture of the new energy active power control system in step 1, the new energy of the lower-level dispatching (including 13 local-level dispatching and 3 internal / external systems of the power grid company that aggregate low-voltage distributed power sources) is aggregated step by step to be equivalent to the AGC virtual machine group of the upper-level dispatching, and participates in the unified decision-making of the upper-level dispatching together with the upper-level dispatching new energy, thereby realizing the AGC modeling of new energy of full voltage level and laying the foundation for the subsequent formulation of new energy active collaborative control strategy of full voltage level.

[0185] Step three: Wide-area information interaction for two-way coordinated support of provincial and local new energy active power: Relying on 1 provincial dispatching and control master station and 13 local dispatching master stations AGC to realize new energy control modeling, the design uses wide-area information interaction technology to realize the on-demand and rapid transmission of new energy command information data between provincial and local dispatching systems in step two, and between local dispatching and internal / external systems of power grid companies that aggregate low-voltage distributed power sources.

[0186] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0187] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0188] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A full voltage level new energy active power coordinated control system, characterized in that: The system includes a scheduling master layer, a resource aggregation layer, and a resource equipment layer; The dispatching master station layer includes a provincial dispatching control master station and N prefectural dispatching control master stations. The provincial dispatching control master station is equipped with a provincial dispatching new energy AGC function module and a provincial dispatching data acquisition and monitoring control platform; the prefectural dispatching control master station is equipped with a prefectural dispatching new energy AGC function module and a prefectural dispatching data acquisition and monitoring control platform; The provincial dispatching new energy AGC function module is used to send control instructions to the provincial dispatching data acquisition and monitoring control platform, and the provincial dispatching data acquisition and monitoring control platform sends the control instructions to the centralized dispatching new energy in the resource equipment layer through the provincial dispatching direct dispatching method of the resource aggregation layer; and sends the control target to the local dispatching new energy AGC function module; The provincial dispatching data collection and monitoring control platform is used to receive the aggregated information of the centralized dispatching new energy of the resource equipment layer, and send the real-time information data to the provincial dispatching new energy AGC function module; The local dispatching and control master station is used to send adjustable resource control requirements to the provincial dispatching and control master station, and send control instructions to the local dispatching data acquisition and monitoring control platform, and the local dispatching data acquisition and monitoring control platform sends the control instructions to the low-voltage distributed power supply through the low-voltage distributed power supply aggregation system of the resource aggregation layer, or the local dispatching data acquisition and monitoring control platform sends the control instructions to the medium-voltage distributed power supply or non-centralized centralized new energy through the local dispatching direct dispatching method; The ground-based data acquisition and monitoring control platform is used to receive aggregated information of low-voltage distributed power supplies, medium-voltage distributed power supplies and non-centralized new energy sources at the resource equipment layer, and send real-time information data to the ground-based new energy AGC functional module.

2. The full voltage level new energy active power coordinated control system according to claim 1 is characterized in that: The provincial new energy AGC function module includes: a new energy control model synchronization unit, a new energy control information monitoring unit and a new energy provincial and local coordinated control unit; The new energy control model synchronization unit is used to construct a new energy control model, and deploy the push end of the new energy control model on the local dispatching side, and deploy the receiving end on the provincial dispatching side. The unique identification ID is used as the information interaction content of the new energy control model to ensure the unique identification of the synchronization content of each local dispatching, update the data of the local dispatching new energy AGC function module and push it to the provincial dispatching, and the provincial dispatching automatically updates the relevant data, thereby realizing the real-time maintenance-free synchronization of the new energy control model information and providing model data for the new energy control information monitoring unit; the new energy control model is used to provide real-time monitoring, data synchronization, decision support and emergency response capabilities to ensure the safe, stable and efficient operation of the power grid under various circumstances; The new energy control information monitoring unit is used to monitor the operating status, control sequence, adjustable capacity, and control results of the provincial and local new energy in real time, and to collect real-time data based on the operating status of the new energy control model pushed by the local dispatch, and then write it to the provincial dispatch side based on the unique identification ID, so as to provide real-time and reliable data for the new energy provincial and local collaborative control unit; The new energy-saving and local coordinated control unit is used to complete the final new energy coordinated closed-loop control with the local-adjusting new energy AGC functional module through the calculation of local new energy power distribution, the safety verification of control instructions and the issuance and execution, and the feedback tracking of control results. The information interaction method adopts the wide-area information interaction method for data communication.

3. The full voltage level new energy active power coordinated control system according to claim 2 is characterized in that: The provincial dispatching new energy AGC function module supports the collaborative control scenario of multiple devices in multiple locations. The local dispatching new energy AGC function module monitors the loads of multiple devices. When one or more devices are overloaded, after the conditions for the provincial dispatching control master station to participate in the collaborative control are met, the device overload collaborative control request set and the station control target set are sent to the provincial dispatching through wide area information interaction, and are issued for execution after confirmation by the provincial dispatching operation personnel. The device overload collaborative control request set is a request data set for collaborative control of one or more overloaded devices, and the station control target set is a basic information set corresponding to one or more overloaded devices.

4. A method for coordinated control of active power of new energy at all voltage levels, characterized in that: The method includes: The adjustable resources corresponding to the low-voltage distributed power supply are aggregated according to the region-grid division-220 kV substation aggregation method in the low-voltage distributed power supply aggregation system, and a local-adjustment AGC virtual machine group is formed. After the local-adjustment AGC virtual machine group is put into operation, the aggregation information is sent to the local-adjustment data acquisition and monitoring control platform, so that the local-adjustment data acquisition and monitoring control platform sends the aggregation information to the local-adjustment new energy AGC functional module. The local-adjustment new energy AGC functional module sends the adjustable resource control demand obtained from the aggregation information to the provincial-adjustment new energy AGC functional module. At the same time, the local-adjustment new energy AGC functional module receives the control target issued by the provincial-adjustment new energy AGC functional module.

5. The method for coordinated control of active power of new energy at all voltage levels according to claim 4 is characterized in that: The adjustable resources corresponding to the low-voltage distributed power sources are aggregated according to the region-grid partition-220 kV substation aggregation mode in the low-voltage distributed power source aggregation system, specifically including: Rated capacity of equivalent new energy source E of ground-controlled 220 kV substation m m , Active output P m , adjust the upper limit and adjust the lower limit It is expressed as: Where: I is the number of new energy stations under the jurisdiction of the local survey; E m,i , P m,i , The local 220 kV substation m is responsible for the rated capacity, active output, upper and lower limits of regulation of the new energy station i.

6. The full voltage level new energy active power coordinated control method according to claim 5 is characterized in that: The ground-adjusting AGC virtual machine group input signal must meet the following conditions at the same time: (1) the ground-adjusting new energy AGC function module is in a closed-loop state; (2) the current ground-adjusting field group control mode is: provincial-ground coordination mode; (3) there is a controllable field station in the current field group, that is, the controllable field station is put into the first adjustment mode, and the first adjustment mode is a fixed adjustment mode corresponding to the field station, which is one of the criteria for evaluating whether the ground-adjusting AGC virtual machine group is put into the signal; Specifically, the control mode of the current ground-adjusting station group is: in the provincial-land coordination mode, the ground-adjusting new energy AGC function module automatically puts all controllable stations under the station group into the first adjustment mode; for uncontrollable stations, the ground-adjusting new energy AGC function module sets its default mode to the first adjustment mode, and automatically switches to the first adjustment mode after the ground-adjusting AGC virtual machine is remotely put into operation.

7. The method for coordinated control of active power of new energy at all voltage levels according to claim 6 is characterized in that: The target output of the new energy stations under the jurisdiction of the local dispatch is divided into base power and adjustment power. The base power is determined by the planning curve, market clearing results and current actual output. The adjustment power is uniformly decided and allocated by the local dispatch new energy AGC function module according to the regulation needs of different scenarios; The base point power corresponding to the ground-adjusting AGC virtual machine in the automatic adjustment mode is the current actual output, and the adjustment power is a single adjustment step, that is, the adjustment power per minute of the new energy station under the normal adjustment rate; therefore, the target output is expressed as: Target power = base point power + adjustment power.

8. The method for coordinated control of active power of new energy at all voltage levels according to claim 7 is characterized in that: The base point power processing method corresponding to the ground-adjusting AGC virtual machine group in the first adjustment mode is: The provincial dispatching control master station switches different control modes under different working conditions, and the control instruction generation logic under different modes is different, that is, the current provincial dispatching control master station switches between the first adjustment mode and the second adjustment mode. At this time, the local dispatching control master station cannot perceive the change of the control mode of the provincial dispatching control master station. In order to ensure its online availability after being put into provincial dispatching control, the base point of the first adjustment mode of the local dispatching new energy AGC function module is adjusted, namely: In the provincial and local collaborative mode, the adjustment instructions are: when the local AGC virtual machine is adjusted to install the capacity, the base point power value of the new energy station in the first adjustment mode is also updated to the installed capacity to break through the step constraint limit, and the installed capacity is issued as the control instruction; When the coordination instruction in the provincial and local coordinated mode is less than the zone installed capacity, the base point power value of the new energy station in the first regulation mode is restored to the current output.

9. The method for coordinated control of active power of new energy at all voltage levels according to claim 8 is characterized in that: The issuance of the adjustment instruction is processed in the following manner: Because the provincial dispatching instructions are issued periodically, when the local dispatching is put into provincial dispatching control, the local dispatching will not immediately issue and update the control instructions. At this time, in response to this situation, the local dispatching new energy AGC function module will still maintain the control instructions before the local dispatching AGC virtual machine group is put into operation until it receives new instructions issued by the provincial dispatching new energy AGC function module. It will not execute historical residual instructions, thereby avoiding erroneous control behavior.

10. The method for coordinated control of active power of new energy at all voltage levels according to claim 4, characterized in that: The method further includes: The local new energy AGC function module receives the control target issued by the provincial new energy AGC function module, and decomposes the command to the non-centralized centralized new energy and low-voltage distributed power aggregation system; The local-adjustment new energy AGC functional module receives the distributed power adjustable resource aggregation information sent by the low-voltage distributed power aggregation system in accordance with the substation-medium voltage feeder-distribution station aggregation method, and sends the distributed power aggregation adjustment target to the low-voltage distributed power aggregation system. Among them, the local-adjustment new energy AGC functional module and the low-voltage distributed power aggregation systems inside and outside the company use wide-area information interaction to communicate data.

11. The full voltage level new energy active power coordinated control method according to claim 10 is characterized in that: The distributed power adjustable resource aggregation information sent by the low-voltage distributed power aggregation system in the substation-medium voltage feeder-distribution station area aggregation mode specifically includes: Aggregate the low-voltage renewable energy under the distribution station area and send it to the ground-adjusting renewable energy AGC function module as the equivalent renewable energy corresponding to the ground-adjusting renewable energy AGC function module side. The rated capacity E of the equivalent renewable energy in the distribution station area n is n , Active output P n , adjust the upper limit P n max , adjust the lower limit P n min Specifically expressed as: Where: J is the number of low-voltage new energy stations under the distribution area; E n,j , P n,j , It is the rated capacity, active output, upper and lower regulation limits of the low-voltage new energy station j under the jurisdiction of the distribution station area n.

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