CN107390547B - Active power distribution network performance test method containing micro-grid group - Google Patents
Active power distribution network performance test method containing micro-grid group Download PDFInfo
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Abstract
The invention provides a performance test method for an active power distribution network comprising a microgrid group, which comprises the following steps: performing multi-scale modeling on an active power distribution network comprising a microgrid group; creating an active power distribution network dynamic whole-process digital simulation test system facing strategy verification; creating an electric power-information digital-analog mixed real-time simulation test system for equipment test; testing the plug-and-play distributed power supply and the group control equipment based on the power-information digital-analog hybrid real-time simulation test system; and testing the active power distribution network open interactive coordination control system based on the power-information digital-analog hybrid real-time simulation test system. The invention realizes seamless connection and equivalent model selection and switching of electrical and communication interfaces of physical equipment through the electric power-information digital-analog hybrid real-time simulation test platform, tests the plug-and-play function of the distributed power supply grid-connected device, prevents equipment faults and online debugging from influencing the safety of the system, reduces the operation risk and improves the comprehensive benefit of the distributed power supply.
Description
Technical Field
The invention belongs to the field of power supply scheduling of power systems, and particularly relates to a performance test method for an active power distribution network comprising a micro-grid group.
Background
With the increasingly prominent global energy crisis problem and the scientific development requirement of the power industry, the establishment of safe, efficient, green and strong smart power grids has become the main melody of the development of the global power industry in the new period. As one of the keys of the smart grid, Distributed Energy Resources (DERs) including photovoltaic power generation systems, wind power generation systems, Energy storage systems, micro gas turbines and the like are vigorously developed and utilized, and have become the focus of strategic attention on sustainable Energy development in China. The distributed power supply is accessed in high density mainly in two forms, one is that various forms of distributed power supply clusters are accessed in a power distribution network and can be used as a virtual power supply cluster to provide beneficial and important supplement for the existing power supply. In addition, the micro-grid autonomous power generation and utilization system which is composed of the distributed power supply, the energy storage device, the load, the monitoring and protection device can be connected to the power distribution network, so that the comprehensive utilization efficiency of energy is improved, and the contradiction between the power grid and the distributed power supply is coordinated; when the geographic positions of a plurality of micro-grids in a medium-voltage or low-voltage distribution network are close, the micro-grids can be interconnected to form a micro-grid group, so that the micro-grid group has complete characteristics and functions of the micro-grids and also has the function of receiving and executing group-level scheduling and coordination control commands to jointly complete the group common operation target.
Under the background of high-density and high-permeability microgrid group/virtual power supply group access, numerous new requirements such as interaction coordination control of an energy storage device, an electric vehicle and a flexible load bring huge changes to the traditional passive power distribution system, so that the traditional passive power distribution system is in transition to an active power distribution system. Active Distribution Networks (ADNs) are the key research points in the field of smart power grids, and compared with the traditional distribution network, the Active distribution network has a relatively perfect observable controllable level and physical conditions for Active self-healing regulation and control, and realizes full-band absorption and optimization of a large amount of accessed distributed energy resources so as to ensure safe, economic and efficient operation of the power grid. The transition process from passive to active provides new requirements for the power distribution network in many aspects such as planning and designing, operation scheduling, control protection, simulation analysis and the like. The development of a rapid and effective simulation technology and a simulation platform for analyzing various steady-state and transient-state behavior characteristics of the active power distribution network provides a basic technical means and a technical platform for planning and designing the power distribution network, optimizing and scheduling, verifying a control strategy, positioning and isolating an automatic fault, self-healing a network, setting protective equipment, testing actual physical equipment and the like, and becomes an urgent and significant research subject.
Disclosure of Invention
The active power distribution network oriented to the microgrid group/virtual power source group is surrounded by the active power distribution network oriented to the microgrid group/virtual power source group, the interaction mechanism of the microgrid group/virtual power source group and the distribution network and a multi-scale modeling method are used as access points, the dynamic whole-process digital simulation test platform research and development of the active power distribution network and the electric power-information digital-analog hybrid real-time simulation test platform research and development are used as key research contents, the effectiveness of a group control group regulation strategy is verified, and the functionality of primary and secondary equipment such as a group control device and a protection measurement device is tested.
The invention specifically relates to a performance test method for an active power distribution network comprising a microgrid cluster, which is used for performing performance test on the active power distribution network comprising the microgrid cluster through a dynamic overall process digital simulation test platform and specifically comprises the following steps:
step (1), performing multi-scale modeling on the active power distribution network comprising the microgrid group;
step (2), creating an active power distribution network dynamic overall process digital simulation test system facing strategy verification;
step (3), creating an electric power-information digital-analog mixed real-time simulation test system for equipment test;
step (4), testing the plug-and-play distributed power supply and the group control equipment based on the electric power-information digital-analog hybrid real-time simulation test system;
and (5) testing the active power distribution network open interactive coordination control system based on the electric power-information digital-analog hybrid real-time simulation test system.
Further, the step (1) specifically includes the following steps:
step 1.1, establishing a distributed power supply multi-time scale simulation model based on a mathematical model and a local control strategy of a photovoltaic, wind power and energy storage typical distributed power supply, comprehensively considering spatial distribution concentration, multi-machine output similarity and a network topology structure aiming at the condition that the distributed power supply is accessed to a power distribution network in a large scale, and establishing comprehensive sensitivity and aggregation index of the multi-machine distributed power supply by adopting a sensitivity analysis and fuzzy clustering analysis method to form a distributed power supply multi-machine clustering method considering different control modes and different element compositions;
step 1.2, establishing a multi-time scale clustering equivalent model of a micro-grid group/virtual power supply group by using a distributed power supply multi-machine clustering method; according to the topology, the control method and the control parameters of the converter, a multi-machine electromagnetic transient equivalent method is provided based on an equivalent aggregation principle and a parameter identification method, and a micro-grid cluster/virtual power supply cluster electromagnetic transient equivalent model is established; analyzing time constants, damping coefficients, natural frequencies and coupling characteristics among modes of different instantaneous modes of the distributed power supply, and establishing a micro-grid cluster/virtual power supply cluster dynamic simulation model by adopting a mode simplification method; analyzing the active frequency and reactive voltage characteristics of the distributed power supply under different scenes and working conditions, and establishing a clustering unit steady-state equivalent model by adopting a capacity weighting method;
step 1.3, researching the comprehensive output operation characteristics of the microgrid group/virtual power supply group under multiple time scales by utilizing a multi-scale simulation model of the microgrid group/virtual power supply group aiming at different operation states of the power distribution network, and determining the influence of the types, the number, the spatial distribution and the control modes of the distributed power supplies in the microgrid group/virtual power supply group on the operation characteristics; the interactive operation mechanism of the micro-grid group/virtual power source group and the power distribution network is researched from the aspects of local controllability and joint scheduling of the distributed power sources, when the operation state of the power distribution network is switched, and a fault or a load demand is changed, the auxiliary support of the distributed power sources on active power control, reactive power control, voltage regulation and safety and stability control of the power distribution network is realized, and the friendly interactive capability of the large-scale distributed power sources in responding to control and scheduling of the power distribution network is improved by using the micro-grid group/virtual power source group.
Further, the step (2) specifically includes the following steps:
step 2.1, considering the requirements of different simulation scenes on simulation accuracy, convergence and speed, and determining a micro-grid group/virtual power supply group multi-time scale simulation model optimization method and a model automatic switching method which meet the requirements of short-term/medium-term/long-term simulation; in order to increase the simulation precision, optimize the simulation time and the memory overhead in the simulation process, and determine a variable step size simulation technology meeting the medium-term/long-term simulation requirements;
2.2, determining an interface and a time sequence matching technology of a group control group regulation model and a dynamic overall process simulation model aiming at a typical scene and different test time sequences, and creating a dynamic overall process digital simulation test system facing a multi-microgrid group/virtual power supply group complex active power distribution network;
and 2.3, establishing a simulation model of a micro-grid group/virtual power supply group autonomous control strategy, a multi-time scale optimization scheduling strategy, an active and reactive power complementary coordination optimization strategy and a network-source-load coordination control strategy, and verifying the effectiveness of the group control strategy through digital simulation.
Further, the step (3) specifically includes the following steps:
3.1, aiming at a typical simulation scene, establishing a power-information hybrid simulation model covering a communication model and an information interaction interface model of a micro-grid group/virtual power supply group pair, wherein the power-information hybrid simulation model is used for simulating an information interaction link in the practical group control strategy implementation process so as to realize seamless access of practical physical equipment; based on an OPNET network simulation platform, selecting and designing a communication network protocol, a communication mode and a communication medium through analyzing the communication network topology of the power distribution network, and establishing an information-communication system model comprising a network model and a communication interface model; aiming at communication delay, data packet loss and false sending conditions in the information interaction process, the simulation of the information network and the communication process of the active power distribution network is carried out based on the OPNET;
3.2, determining a micro-grid group/virtual power supply group digital-analog hybrid real-time simulation and interactive interface synchronization method of the power-information multi-physical link, constructing a power-information hybrid simulation architecture and an interactive middleware, and determining a propulsion and synchronization mechanism of the power-information hybrid simulation; determining an interface technology between the electric power-information digital-analog hybrid real-time simulation system and the physical tested equipment;
and 3.3, constructing an active power distribution network power-information digital-analog hybrid real-time simulation test system facing the microgrid group/virtual power source group based on a multi-core parallel simulation technology and RT-LAB, meeting the real-time simulation test requirement, realizing real-time simulation and unified simulation of power flow and information flow of the active power distribution network, seamless connection of actual physical equipment power and communication interfaces, and selection and switching of equivalent models.
Further, the step (4) specifically includes the following steps:
step 4.1, determining a primary equipment power hardware-in-loop simulation test technology of the power grid model connected with the distributed power supply physical device, and testing the flexible grid-connected control and plug-and-play functions of the distributed power supply grid-connected device; testing the automatic load power sharing capability of the distributed power supply after plug and play grid connection and the stability of the power grid under plug and play control of the distributed power supply;
step 4.2, determining a secondary equipment information hardware-in-loop simulation test technology of a power grid model connection group control device object, testing the state monitoring, information interaction and control protection functions of key secondary equipment, and checking the automatic sensing and integration capability of a power grid information system on the state of a distributed power supply; and verifying the optimal regulation and control capability of the group control equipment according to the running states of the power distribution network in different scenes.
Further, the step (5) specifically includes the following steps:
step 5.1, adopting a power-information hardware-in-loop hybrid simulation test technology for simultaneously connecting a simulation test platform with primary and secondary equipment, and testing a network-source-load multi-time scale and multi-optimization target coordination control and cooperative optimization model of the active power distribution network in a network-source-load flexible interaction operation mode of the active power distribution network, wherein the coordination control and cooperative optimization model comprises four states of source-source complementation, source-network coordination, network-load interaction and source-load interaction;
and 5.2, considering different running states of the power distribution network, verifying a network-source-load hierarchical coordination control strategy aiming at uncertain factors and changes of running characteristics of the power distribution network caused by network-source-load interaction of the active power distribution network in the aspects of active power control, reactive power control, voltage regulation and safe and stable running, and performing system level test on network-source-load coordination control capability of the active power distribution network.
The invention realizes seamless connection and equivalent model selection and switching of electrical and communication interfaces of physical equipment through the electric power-information digital-analog hybrid real-time simulation test platform, tests the plug-and-play function of a distributed power supply grid-connected device, the state monitoring, information interaction and control protection functions of secondary equipment (a group control device and a measurement and control protection device), the equipment logic scheme and the parameter setting function, prevents equipment faults and online debugging from influencing the system safety, reduces the operation risk and improves the comprehensive benefit of the distributed power supply.
Detailed Description
The following describes in detail a specific embodiment of the method for testing the performance of the active power distribution network including the microgrid group according to the present invention.
The performance of the active power distribution network comprising the microgrid group is tested through a dynamic overall process digital simulation test platform. The performance test of the active power distribution network specifically comprises the following steps:
step (1), performing multi-scale modeling on the active power distribution network comprising the microgrid group;
step (2), creating an active power distribution network dynamic overall process digital simulation test system facing strategy verification;
step (3), creating an electric power-information digital-analog mixed real-time simulation test system for equipment test;
step (4), testing the plug-and-play distributed power supply and the group control equipment based on the electric power-information digital-analog hybrid real-time simulation test system;
and (5) testing the active power distribution network open interactive coordination control system based on the electric power-information digital-analog hybrid real-time simulation test system.
The step (1) specifically comprises the following steps:
step 1.1, establishing a distributed power supply multi-time scale simulation model based on a mathematical model and a local control strategy of a photovoltaic, wind power and energy storage typical distributed power supply, comprehensively considering spatial distribution concentration, multi-machine output similarity and a network topology structure aiming at the condition that the distributed power supply is accessed to a power distribution network in a large scale, and establishing comprehensive sensitivity and aggregation index of the multi-machine distributed power supply by adopting a sensitivity analysis and fuzzy clustering analysis method to form a distributed power supply multi-machine clustering method considering different control modes and different element compositions;
step 1.2, establishing a multi-time scale clustering equivalent model of a micro-grid group/virtual power supply group by using a distributed power supply multi-machine clustering method; according to the topology, the control method and the control parameters of the converter, a multi-machine electromagnetic transient equivalent method is provided based on an equivalent aggregation principle and a parameter identification method, and a micro-grid cluster/virtual power supply cluster electromagnetic transient equivalent model is established; analyzing time constants, damping coefficients, natural frequencies and coupling characteristics among modes of different instantaneous modes of the distributed power supply, and establishing a micro-grid cluster/virtual power supply cluster dynamic simulation model by adopting a mode simplification method; analyzing the active frequency and reactive voltage characteristics of the distributed power supply under different scenes and working conditions, and establishing a clustering unit steady-state equivalent model by adopting a capacity weighting method;
step 1.3, researching the comprehensive output operation characteristics of the microgrid group/virtual power supply group under multiple time scales by utilizing a multi-scale simulation model of the microgrid group/virtual power supply group aiming at different operation states of the power distribution network, and determining the influence of the types, the number, the spatial distribution and the control modes of the distributed power supplies in the microgrid group/virtual power supply group on the operation characteristics; the interactive operation mechanism of the micro-grid group/virtual power source group and the power distribution network is researched from the aspects of local controllability and joint scheduling of the distributed power sources, when the operation state of the power distribution network is switched, and a fault or a load demand is changed, the auxiliary support of the distributed power sources on active power control, reactive power control, voltage regulation and safety and stability control of the power distribution network is realized, and the friendly interactive capability of the large-scale distributed power sources in responding to control and scheduling of the power distribution network is improved by using the micro-grid group/virtual power source group.
The step (2) specifically comprises the following steps:
step 2.1, considering the requirements of different simulation scenes on simulation accuracy, convergence and speed, and determining a micro-grid group/virtual power supply group multi-time scale simulation model optimization method and a model automatic switching method which meet the requirements of short-term/medium-term/long-term simulation; in order to increase the simulation precision, optimize the simulation time and the memory overhead in the simulation process, and determine a variable step size simulation technology meeting the medium-term/long-term simulation requirements;
2.2, determining an interface and a time sequence matching technology of a group control group regulation model and a dynamic overall process simulation model aiming at a typical scene and different test time sequences, and creating a dynamic overall process digital simulation test system facing a multi-microgrid group/virtual power supply group complex active power distribution network;
and 2.3, establishing a simulation model of a micro-grid group/virtual power supply group autonomous control strategy, a multi-time scale optimization scheduling strategy, an active and reactive power complementary coordination optimization strategy and a network-source-load coordination control strategy, and verifying the effectiveness of the group control strategy through digital simulation.
The step (3) specifically comprises the following steps:
3.1, aiming at a typical simulation scene, establishing a power-information hybrid simulation model covering a communication model and an information interaction interface model of a micro-grid group/virtual power supply group pair, wherein the power-information hybrid simulation model is used for simulating an information interaction link in the practical group control strategy implementation process so as to realize seamless access of practical physical equipment; based on an OPNET network simulation platform, selecting and designing a communication network protocol, a communication mode and a communication medium through analyzing the communication network topology of the power distribution network, and establishing an information-communication system model comprising a network model and a communication interface model; aiming at communication delay, data packet loss and false sending conditions in the information interaction process, the simulation of the information network and the communication process of the active power distribution network is carried out based on the OPNET;
3.2, determining a micro-grid group/virtual power supply group digital-analog hybrid real-time simulation and interactive interface synchronization method of the power-information multi-physical link, constructing a power-information hybrid simulation architecture and an interactive middleware, and determining a propulsion and synchronization mechanism of the power-information hybrid simulation; determining an interface technology between the electric power-information digital-analog hybrid real-time simulation system and the physical tested equipment;
and 3.3, constructing an active power distribution network power-information digital-analog hybrid real-time simulation test system facing the microgrid group/virtual power source group based on a multi-core parallel simulation technology and RT-LAB, meeting the real-time simulation test requirement, realizing real-time simulation and unified simulation of power flow and information flow of the active power distribution network, seamless connection of actual physical equipment power and communication interfaces, and selection and switching of equivalent models.
The step (4) specifically comprises the following steps:
step 4.1, determining a primary equipment power hardware-in-loop simulation test technology of the power grid model connected with the distributed power supply physical device, and testing the flexible grid-connected control and plug-and-play functions of the distributed power supply grid-connected device; testing the automatic load power sharing capability of the distributed power supply after plug and play grid connection and the stability of the power grid under plug and play control of the distributed power supply;
step 4.2, determining a secondary equipment information hardware-in-loop simulation test technology of a power grid model connection group control device object, testing the state monitoring, information interaction and control protection functions of key secondary equipment, and checking the automatic sensing and integration capability of a power grid information system on the state of a distributed power supply; and verifying the optimal regulation and control capability of the group control equipment according to the running states of the power distribution network in different scenes.
The step (5) specifically comprises the following steps:
step 5.1, adopting a power-information hardware-in-loop hybrid simulation test technology for simultaneously connecting a simulation test platform with primary and secondary equipment, and testing a network-source-load multi-time scale and multi-optimization target coordination control and cooperative optimization model of the active power distribution network in a network-source-load flexible interaction operation mode of the active power distribution network, wherein the coordination control and cooperative optimization model comprises four states of source-source complementation, source-network coordination, network-load interaction and source-load interaction;
and 5.2, considering different running states of the power distribution network, verifying a network-source-load hierarchical coordination control strategy aiming at uncertain factors and changes of running characteristics of the power distribution network caused by network-source-load interaction of the active power distribution network in the aspects of active power control, reactive power control, voltage regulation and safe and stable running, and performing system level test on network-source-load coordination control capability of the active power distribution network.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. A performance test method for an active power distribution network comprising a microgrid cluster is characterized in that a dynamic overall process digital simulation test platform is used for carrying out performance test on the active power distribution network comprising the microgrid cluster, and the method specifically comprises the following steps:
step (1), performing multi-scale modeling on the active power distribution network comprising the microgrid group;
step (2), creating an active power distribution network dynamic overall process digital simulation test system facing strategy verification;
step (3), creating an electric power-information digital-analog mixed real-time simulation test system for equipment test;
step (4), testing the plug-and-play distributed power supply and the group control equipment based on the electric power-information digital-analog hybrid real-time simulation test system;
step (5), testing the active power distribution network open interaction coordination control system based on the power-information digital-analog hybrid real-time simulation test system;
the step (1) specifically comprises the following steps:
step 1.1, establishing a distributed power supply multi-time scale simulation model based on a mathematical model and a local control strategy of a photovoltaic, wind power and energy storage typical distributed power supply, comprehensively considering spatial distribution concentration, multi-machine output similarity and a network topology structure aiming at the condition that the distributed power supply is accessed to a power distribution network in a large scale, and establishing comprehensive sensitivity and aggregation index of the multi-machine distributed power supply by adopting a sensitivity analysis and fuzzy clustering analysis method to form a distributed power supply multi-machine clustering method considering different control modes and different element compositions;
step 1.2, establishing a multi-time scale clustering equivalent model of a micro-grid group/virtual power supply group by using a distributed power supply multi-machine clustering method; according to the topology, the control method and the control parameters of the converter, a multi-machine electromagnetic transient equivalent method is provided based on an equivalent aggregation principle and a parameter identification method, and a micro-grid cluster/virtual power supply cluster electromagnetic transient equivalent model is established; analyzing time constants, damping coefficients, natural frequencies and coupling characteristics among modes of different instantaneous modes of the distributed power supply, and establishing a micro-grid cluster/virtual power supply cluster dynamic simulation model by adopting a mode simplification method; analyzing the active frequency and reactive voltage characteristics of the distributed power supply under different scenes and working conditions, and establishing a clustering unit steady-state equivalent model by adopting a capacity weighting method;
step 1.3, researching the comprehensive output operation characteristics of the microgrid group/virtual power supply group under multiple time scales by utilizing a multi-scale simulation model of the microgrid group/virtual power supply group aiming at different operation states of the power distribution network, and determining the influence of the types, the number, the spatial distribution and the control modes of the distributed power supplies in the microgrid group/virtual power supply group on the operation characteristics; the interactive operation mechanism of the micro-grid group/virtual power source group and the power distribution network is researched from the aspects of local controllability and joint scheduling of the distributed power sources, when the operation state of the power distribution network is switched, and a fault or a load demand is changed, the auxiliary support of the distributed power sources on active power control, reactive power control, voltage regulation and safety and stability control of the power distribution network is realized, and the friendly interactive capability of the large-scale distributed power sources for responding to the control and scheduling of the power distribution network is improved by using the micro-grid group/virtual power source group;
the step (2) specifically comprises the following steps:
step 2.1, considering the requirements of different simulation scenes on simulation accuracy, convergence and speed, and determining a micro-grid group/virtual power supply group multi-time scale simulation model optimization method and a model automatic switching method which meet the requirements of short-term/medium-term/long-term simulation; in order to increase the simulation precision, optimize the simulation time and the memory overhead in the simulation process, and determine a variable step size simulation technology meeting the medium-term/long-term simulation requirements;
2.2, determining an interface and a time sequence matching technology of a group control group regulation model and a dynamic overall process simulation model aiming at a typical scene and different test time sequences, and creating a dynamic overall process digital simulation test system facing a multi-microgrid group/virtual power supply group complex active power distribution network;
step 2.3, establishing a simulation model of a micro-grid group/virtual power supply group autonomous control strategy, a multi-time scale optimization scheduling strategy, an active and reactive power complementary coordination optimization strategy and a network-source-load coordination control strategy, and verifying the effectiveness of the group control strategy through digital simulation;
the step (3) specifically comprises the following steps:
3.1, aiming at a typical simulation scene, establishing a power-information hybrid simulation model covering a communication model and an information interaction interface model of a micro-grid group/virtual power supply group pair, wherein the power-information hybrid simulation model is used for simulating an information interaction link in the practical group control strategy implementation process so as to realize seamless access of practical physical equipment; based on an OPNET network simulation platform, selecting and designing a communication network protocol, a communication mode and a communication medium through analyzing the communication network topology of the power distribution network, and establishing an information-communication system model comprising a network model and a communication interface model; aiming at communication delay, data packet loss and false sending conditions in the information interaction process, the simulation of the information network and the communication process of the active power distribution network is carried out based on the OPNET;
3.2, determining a micro-grid group/virtual power supply group digital-analog hybrid real-time simulation and interactive interface synchronization method of the power-information multi-physical link, constructing a power-information hybrid simulation architecture and an interactive middleware, and determining a propulsion and synchronization mechanism of the power-information hybrid simulation; determining an interface technology between the electric power-information digital-analog hybrid real-time simulation system and the physical tested equipment;
3.3, constructing an active power distribution network power-information digital-analog hybrid real-time simulation test system facing the microgrid group/virtual power source group based on a multi-core parallel simulation technology and RT-LAB, meeting the real-time simulation test requirement, realizing real-time simulation and unified simulation of power flow and information flow of the active power distribution network, seamless connection of actual physical equipment power and communication interfaces, and selection and switching of equivalent models;
the step (4) specifically comprises the following steps:
step 4.1, determining a primary equipment power hardware-in-loop simulation test technology of the power grid model connected with the distributed power supply physical device, and testing the flexible grid-connected control and plug-and-play functions of the distributed power supply grid-connected device; testing the automatic load power sharing capability of the distributed power supply after plug and play grid connection and the stability of the power grid under plug and play control of the distributed power supply;
step 4.2, determining a secondary equipment information hardware-in-loop simulation test technology of a power grid model connection group control device object, testing the state monitoring, information interaction and control protection functions of key secondary equipment, and checking the automatic sensing and integration capability of a power grid information system on the state of a distributed power supply; verifying the optimized regulation and control capability of the group control equipment according to the running states of the power distribution network in different scenes;
the step (5) specifically comprises the following steps:
step 5.1, adopting a power-information hardware-in-loop hybrid simulation test technology for simultaneously connecting a simulation test platform with primary and secondary equipment, and testing a network-source-load multi-time scale and multi-optimization target coordination control and cooperative optimization model of the active power distribution network in a network-source-load flexible interaction operation mode of the active power distribution network, wherein the coordination control and cooperative optimization model comprises four states of source-source complementation, source-network coordination, network-load interaction and source-load interaction;
and 5.2, considering different running states of the power distribution network, verifying a network-source-load hierarchical coordination control strategy aiming at uncertain factors and changes of running characteristics of the power distribution network caused by network-source-load interaction of the active power distribution network in the aspects of active power control, reactive power control, voltage regulation and safe and stable running, and performing system level test on network-source-load coordination control capability of the active power distribution network.
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