CN115459266A - Control method and device for multi-element fusion new energy participating in novel power system - Google Patents
Control method and device for multi-element fusion new energy participating in novel power system Download PDFInfo
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Abstract
The invention discloses a control method and a control device for a multivariate fusion new energy participating novel power system. The control method of the invention comprises the following steps: establishing a coordination control framework; monitoring whether a disturbance accident occurs to the power grid or not based on a wide area information acquisition system, and if the disturbance accident occurs, judging that the novel power system is in an emergency state and switching to an emergency agent of the virtual power plant by the virtual power plant after receiving monitoring information; if no disturbance accident occurs, the virtual power plant receives the monitoring information to judge that the novel power system is in a normal state, and performs corresponding control according to different states based on the virtual power plant optimized dispatching agent; and the power and current controllers of the photovoltaic, wind power and energy storage at the lower layer judge the communication state with the upper layer dispatching according to the message information, and carry out active and reactive control in the station according to the dispatching instruction in the normal communication state. The invention improves the operation efficiency of the novel power system, increases the safety and stability of the novel power system, and improves the consumption capacity of a power grid to new energy.
Description
Technical Field
The invention belongs to the technical field of safety and stability control of an electric power system, and relates to a control method and a control device for a multi-element fusion new energy station to participate in safety and stability support of a novel electric power system.
Background
Large-scale development of renewable energy and stored energy is a necessity driven by dual carbon targets. The access of large-scale wind power, photovoltaic, electric vehicles and extra-high voltage direct current enables how to ensure safe and stable operation, support renewable energy consumption, support power grid operation and the like of the electric vehicles to become new challenges to be faced by a novel power system.
The massive heterogeneous new energy grid connection can cause great change of stable control resources on the power supply side of the novel power system. Different from the traditional centralized thermal power generating unit, the new energy is low in observability and controllability and generally equivalent to negative load, and the organization form and the mechanism participating in stable control of the new energy are urgently researched. Load shedding is an important measure in three defense lines, can effectively prevent the power grid from collapsing, but has the problems of high cost and great social negative influence. The accurate load shedding reduces the voltage level of control, and the outgoing line of the transformer substation extends to the interruptible large user load, so that the cost and the negative influence are reduced to a certain extent. However, in a novel power system, the number of controllable resources such as a traditional centralized thermal power generating unit is reduced, and the safety and stability of the novel power system are relatively limited by a mode of increasing load shedding/refining load shedding control quantity. How to balance the contradiction between the steady-state operation economy and the transient response capability of the new energy, and effectively aggregate and participate in the safety and stability control of the large power grid is also a problem to be researched urgently.
The existing research content is mainly focused on the field of safe and stable support of a wind/light/storage single station participating system, particularly, the emergency support strategy is relatively few, and the research on the field of complementary participation of multiple energy sources such as wind power, photovoltaic and energy storage in the emergency support of the system is still few.
Disclosure of Invention
Aiming at the problem that researches on the field of 'wind power, photovoltaic and energy storage' multi-energy complementary participation system safety and stability are few at present, the invention provides a control method and a device for a multi-element fusion new energy station to participate in novel power system safety and stability support.
In order to solve the technical problems, the invention adopts a technical scheme that: a control method for a novel power system participated by new energy of multivariate fusion comprises the following steps:
step 1, establishing a coordination control framework of a multi-element fusion new energy station based on a virtual power plant participating in novel power system safety and stability support, wherein the coordination control framework comprises a large power grid regulation and control layer as an outer layer, a virtual power plant management layer as an upper layer and an internal station control layer as a lower layer, and the upper layer and the lower layer form an inner layer;
step 2, monitoring whether a disturbance accident occurs to the power grid based on a wide area information acquisition system, and if the disturbance accident occurs, judging that a novel power system is in an emergency state and switching to an emergency dispatching agent of a virtual power plant by a virtual power plant in a virtual power plant management layer after receiving monitoring information; if no disturbance accident occurs, the virtual power plant receives the monitoring information to judge that the novel power system is in a normal state, based on the virtual power plant optimization scheduling agent, corresponding control is carried out according to different states, and corresponding instructions are sent to the internal station control layer;
step 3, a photovoltaic power and wind power and stored energy power and current controller of an internal station control layer judges a dispatching communication state with a virtual power plant management layer according to message information, and performs in-station active and reactive power control according to a dispatching instruction in a normal communication state; if the communication is interrupted, the power and current controllers of the photovoltaic, the wind power and the stored energy carry out active and reactive output control according to the requirements of a novel power system.
Further, in the step 1, the virtual power plant aggregates new energy, and is connected with a large power grid of the novel power system through a virtual public coupling point, and the large power grid system divides the inside into a new energy virtual power plant with centralized thermal power plants and aggregated wind, light and energy storage multi-element fusion, and manages the new energy virtual power plants respectively.
Further, in step 3, the photovoltaic, wind power and stored power and current controllers respectively receive control instructions issued by respective agents from the virtual power plant, and meanwhile, when the control instructions cannot be received, active and reactive demands are judged according to the frequency and voltage deviation of a novel power system detected by the respective controllers, and active and reactive output control is performed through closed-loop control.
Further, in the step 2, the large power grid regulation layer as an outer layer uniformly regulates and controls the virtual power plant, the centralized thermal power plant and other controllable resources based on a wide area information acquisition system;
the virtual power plant and the large power grid regulation and control layer carry out data acquisition and control instruction interaction through an information network, and carry out interaction on a physical layer through a virtual public coupling point;
the virtual power plant management layer adopts a multi-agent system, the multi-agent system consists of an emergency scheduling agent, an optimized scheduling agent, a photovoltaic agent, a wind power agent and an energy storage agent of the management layer, the scheduling agent receives agent information of the station layer in a centralized manner and issues a control command, and the station layer agent monitors and uploads wind-solar energy storage power information and issues the control command to a photovoltaic controller, a wind power controller and a power and current controller for energy storage;
the virtual power plant collects data to judge whether the novel power system is in a normal operation state or an emergency state, and sends active and reactive control commands to a photovoltaic agent, a wind power agent and an energy storage agent through an optimized dispatching agent or an emergency dispatching agent.
Further, in the step 3, each control agent of the photovoltaic, the wind power and the energy storage receives a control signal of the upper virtual power plant and sends the control signal to each controller, and the controller judges whether the control signal of the upper control agent is received or not; when the communication is normal, each controller normally receives a control signal of a control agent and sends out or absorbs corresponding active and reactive power according to a control requirement; when communication is abnormal, each controller can not receive control signals of a control agent, and the controllers form inner ring control signals according to the frequency and voltage deviation of the novel power system collected by the grid-connected point and output active power and reactive power required by the novel power system.
The other technical scheme adopted by the invention is as follows: new forms of energy of multivariate integration participate in novel power system's controlling means, and it includes:
a coordination control architecture establishing unit: establishing a coordination control framework of a multi-element fusion new energy station based on the participation of a virtual power plant in the novel power system safety and stability support, wherein the coordination control framework comprises a large power grid regulation and control layer as an outer layer, a virtual power plant management layer as an upper layer and an internal station control layer as a lower layer, and the upper layer and the lower layer form an inner layer;
disturbance accident monitoring unit: monitoring whether a disturbance accident occurs to the power grid or not based on a wide area information acquisition system, and if the disturbance accident occurs, judging that the novel power system is in an emergency state and switching to an emergency scheduling agent of a virtual power plant by a virtual power plant in a virtual power plant management layer after receiving monitoring information; if no disturbance accident occurs, the virtual power plant receives the monitoring information to judge that the novel power system is in a normal state, based on the virtual power plant optimization scheduling agent, corresponding control is carried out according to different states, and corresponding instructions are sent to the internal station control layer;
a communication state determination unit: the photovoltaic, wind power and stored energy power and current controller of the internal station control layer judges the dispatching communication state with the virtual power plant management layer according to the message information, and performs in-station active and reactive power control according to the dispatching instruction in the normal communication state; and if the communication is interrupted, the photovoltaic, wind power and energy storage power and current controllers carry out active and reactive output control according to system requirements.
Compared with the prior art, the invention has the following technical effects:
aiming at the characteristic that a large amount of new energy such as wind power, photovoltaic and the like in a novel power system participates in system grid connection, the multivariate fusion new energy is managed and distributed, the system operation efficiency is improved, the safety and stability of the novel power system are improved, and the consumption capacity of a power grid on the new energy is improved; the defects of strong uncertainty, low inertia, weak interference resistance, low observability and low controllability of new energy are overcome, and the new energy is organized into a power grid-friendly high-controllable resource which actively participates in regulation and control; virtual power plant control and multi-element fusion wind-solar energy storage new energy station end closed-loop control are combined, and reliability of a control system is improved.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a flow chart of the operation of the apparatus of the present invention;
FIG. 3 is a diagram of the virtual power plant based upper level scheduling architecture of the present invention;
FIG. 4 is a diagram of a wind-solar-storage integrated control architecture of a lower site of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings. It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example 1
As shown in fig. 1-2, the present embodiment provides a control method for a new energy station with multiple elements fused to participate in the safe and stable support of a new power system, where the method specifically includes the following steps:
step 1), a control framework based on a virtual power plant is shown in fig. 3, the virtual power plant aggregates new energy such as wind, light and storage and the like and is connected with a large power grid of a novel power system through a virtual public coupling point, and the large power grid system divides the interior into a centralized thermal power plant and an aggregated wind, light and storage and other multi-element fused new energy virtual power plant to respectively manage.
The control architecture of the lower-layer station in the public coupling point is shown in fig. 4, the photovoltaic wind power energy storage power and current controllers respectively receive control instructions issued by respective agents of the virtual power plant, and meanwhile, when the control instructions cannot be received, active and reactive requirements are judged according to the frequency and voltage deviation of a novel power system detected by the respective controllers, and active and reactive output control is carried out through closed-loop control;
and step 2), the outer layer is a large power grid regulation and control layer, and controllable resources such as the virtual power plant and the centralized power plant are uniformly regulated and controlled mainly based on a wide area information acquisition system. The virtual power plant management layer adopts a multi-agent technology, performs interaction of data acquisition and control instructions with the large power grid regulation layer through an information network, and performs interaction on a physical layer through a virtual public coupling point. The virtual power plant collects data to judge whether the novel power system is in a normal operation state or an emergency state, and active and reactive control commands are issued to control agents of all wind and light storage units through an optimized dispatching agent or an emergency agent. The method comprises the following specific steps:
(1) Collecting wide area information by a large power grid regulation and control layer;
(2) Judging whether a disturbance accident is detected;
(3) If the disturbance accident is not detected, executing an outer layer normal operation strategy, and issuing corresponding control instructions to the virtual power plant, the centralized thermal power plant and other controllable resources;
(4) The virtual power plant management layer receives an outer layer control instruction, namely receives the control instruction through the virtual coupling point, and judges whether an upper layer issued control instruction is the control instruction in an emergency state.
(5) If the control command is not the emergency control command, the virtual power plant optimizes and dispatches the proxy action and executes the inner layer normal operation strategy, and if the control command is the emergency control command, the virtual power plant optimizes and dispatches the proxy action and executes the inner layer emergency control strategy and sends the control command to the new energy sources such as internal wind, solar energy, storage and the like.
And 3), each control agent of photovoltaic, wind power and energy storage receives the control signal of the upper virtual power plant and sends the control signal to each controller, and the controllers judge whether the control signals of the upper control agents are received. When the communication is normal, each controller normally receives a control signal of a control agent and sends out or absorbs corresponding active and reactive power according to a control requirement; when communication is unusual, the unable control signal who controls agent of receiving of each controller, the controller is according to self from the novel power system frequency and the voltage deviation that the grid-connected point gathered, forms closed-loop control and sends active and idle according to novel power system demand by oneself, and the closed-loop control strategy is as follows:
(1) The control mode of the wind turbine generator is as follows: the fan adopts a double-fed induction motor, and the control mode adopts a wind turbine control system and a double-fed induction motor comprehensive control system. The double-fed induction motor comprehensive control system is used for independently controlling active power and reactive power generated by the generator; two control parts are included: one for rotor-side converter control and one for grid-side converter control. The control of the wind turbine consists of a rotational speed controller and a pitch angle controller. The rotating speed controller provides a converter active power reference value for controlling the power of a grid connection point to a power controller of a double-fed motor rotor side converter; when the wind speed exceeds the rated wind speed and the active power of the wind turbine exceeds the rated power, the pitch angle controller increases the pitch angle to limit the active power of the wind turbine, and the pitch angle is 0 degree in the normal working state. For the reactive power control of the converter, the converter determines the magnitude of output or absorption reactive power by detecting the difference between the grid voltage and the reference voltage through closed-loop control.
(2) The control mode of the photovoltaic unit is as follows: the photovoltaic power generation system control is divided into two subsystems: photovoltaic control system and grid-connected inverter control system. A controller of the photovoltaic control system provides an active power reference value of the grid-connected inverter, and the reactive power reference value of the inverter is set to a certain value according to the power factor requirement of the system, and is generally set to 0. And comparing the power reference value with the active and reactive measurement value at the power grid side, and obtaining an inner ring current control reference value under a synchronous coordinate system through an outer ring power controller. And the current control reference value and the network side current measured value are used for obtaining an inverter trigger pulse through a current controller. The active and reactive decoupling control and synchronous grid connection of the inverter are realized by combining a phase-locked loop measurement technology.
(3) An energy storage control mode: the overall control of energy storage includes two subsystems: the system comprises a storage battery control system and a grid-connected inverter control system (comprising a U/F controller, a power controller and a current controller). The energy storage system battery controller detects the output condition of the storage battery by monitoring the charging and discharging state of the storage battery, and takes the limit value as the active power reference value of the power controller when the active power reference value exceeds the active power absorption and transmission limit value of the storage battery. The voltage and frequency set values and the measured values of the grid-connected inverter control system are subjected to U/F controller to obtain active and reactive power reference values of the power controller, and the reference values are provided for inner loop current control through the power controller and the adjustment of the active and reactive measured values of the grid side. The inner loop current control of the inverter is consistent with the inner loop control mode of the photovoltaic system.
Example 2
The embodiment provides a control device for a new energy source participating novel power system with multi-element fusion, which comprises a coordination control framework establishing unit, a disturbance accident monitoring unit and a communication state judging unit.
A coordination control architecture establishing unit: establishing a coordination control framework of a multi-element fusion new energy station based on the participation of a virtual power plant in the novel power system safety and stability support, wherein the coordination control framework comprises a large power grid regulation and control layer as an outer layer, a virtual power plant management layer as an upper layer and an internal station control layer as a lower layer, and the upper layer and the lower layer form an inner layer;
disturbance accident monitoring unit: monitoring whether a disturbance accident occurs to the power grid or not based on a wide area information acquisition system, and if the disturbance accident occurs, judging that the novel power system is in an emergency state and switching to an emergency dispatching agent of a virtual power plant by a virtual power plant in a virtual power plant management layer after receiving monitoring information; if no disturbance accident occurs, the virtual power plant receives the monitoring information to judge that the novel power system is in a normal state, based on the virtual power plant optimization scheduling agent, corresponding control is carried out according to different states, and corresponding instructions are sent to the internal station control layer;
a communication state determination unit: the photovoltaic, wind power and stored energy power and current controller of the internal station control layer judges the dispatching communication state with the virtual power plant management layer according to the message information, and performs in-station active and reactive power control according to the dispatching instruction in the normal communication state; if the communication is interrupted, the power and current controllers of the photovoltaic power system, the wind power system and the energy storage system perform active and reactive output control according to the requirements of the novel power system.
In the coordination control architecture building unit, a virtual power plant aggregates new energy, the new energy is connected with a large power grid of a novel power system through a virtual public coupling point, and the large power grid system divides the interior of the new energy virtual power plant into a centralized thermal power plant and an aggregated wind, light and energy storage multi-element fusion and manages the new energy virtual power plant respectively.
In the communication state judging unit, the photovoltaic power controller, the wind power controller and the current controller of the stored energy respectively receive control instructions issued by respective agents of the virtual power plant, and simultaneously judge active requirements and reactive requirements according to frequency and voltage deviation of a novel power system detected by respective controllers when the control instructions cannot be received, and carry out active and reactive output control through closed-loop control.
In the disturbance accident monitoring unit, a large power grid regulation and control layer as an outer layer is used for uniformly regulating and controlling virtual power plants, centralized thermal power plants and other controllable resources based on a wide area information acquisition system;
the virtual power plant and the large power grid regulation and control layer carry out data acquisition and control instruction interaction through an information network, and carry out interaction on a physical layer through a virtual public coupling point;
the virtual power plant management layer adopts a multi-agent system, the multi-agent system consists of an emergency scheduling agent, an optimized scheduling agent, a photovoltaic agent, a wind power agent and an energy storage agent of the management layer, the scheduling agent receives agent information of the station layer in a centralized manner and issues a control command, and the station layer agent monitors and uploads wind-solar energy storage power information and issues the control command to a photovoltaic controller, a wind power controller and a power and current controller for energy storage;
the virtual power plant collects data to judge whether the novel power system is in a normal operation state or an emergency state, and sends active and reactive control commands to a photovoltaic agent, a wind power agent and an energy storage agent through an optimized dispatching agent or an emergency dispatching agent.
In the communication state judgment unit, each control agent of photovoltaic, wind power and energy storage receives a control signal of an upper virtual power plant and sends the control signal to each controller, and the controllers judge whether the control signals of the upper control agents are received or not; when the communication is normal, each controller normally receives a control signal of a control agent and sends out or absorbs corresponding active and reactive power according to a control requirement; when communication is abnormal, each controller can not receive control signals of a control agent, and the controllers form inner ring control signals according to the frequency and voltage deviation of the novel power system collected by the grid-connected point and output active power and reactive power required by the novel power system.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The control method for the new energy of the multivariate fusion to participate in the novel power system is characterized by comprising the following steps:
step 1, establishing a coordination control framework of a multi-element fusion new energy station based on a virtual power plant participating in novel power system safety and stability support, wherein the coordination control framework comprises a large power grid regulation and control layer as an outer layer, a virtual power plant management layer as an upper layer and an internal station control layer as a lower layer, and the upper layer and the lower layer form an inner layer;
step 2, monitoring whether a disturbance accident occurs to the power grid based on a wide area information acquisition system, and if the disturbance accident occurs, judging that the novel power system is in an emergency state and switching to an emergency dispatching agent of a virtual power plant by a virtual power plant in a virtual power plant management layer after receiving monitoring information; if no disturbance accident occurs, the virtual power plant receives the monitoring information to judge that the system is in a normal state, based on the virtual power plant optimization scheduling agent, corresponding control is carried out according to different states, and corresponding instructions are sent to an internal station control layer;
step 3, the photovoltaic power, wind power and stored energy power and current controllers of the internal station control layer judge the dispatching communication state with the virtual power plant management layer according to the message information, and carry out active and reactive power control in the station according to dispatching instructions in the normal communication state; if the communication is interrupted, the power and current controllers of the photovoltaic power system, the wind power system and the energy storage system perform active and reactive output control according to the requirements of the novel power system.
2. The method for controlling a multi-element converged new energy participation novel electric power system according to claim 1,
in the step 1, the virtual power plant aggregates new energy, the new energy is connected with a large power grid of the novel power system through a virtual public coupling point, and the large power grid system divides the inside of the virtual power plant into a centralized thermal power plant and an aggregated wind, light and energy storage multi-element integrated new energy to be managed respectively.
3. The method for controlling a multi-element converged new energy participation novel electric power system according to claim 1,
in the step 3, the photovoltaic, wind power and stored energy power and current controllers respectively receive control instructions issued by respective agents of the virtual power plant, and meanwhile, when the control instructions cannot be received, active requirements and reactive requirements are judged according to the frequency and voltage deviation of the novel power system detected by the respective controllers, and active and reactive output control is carried out through closed-loop control.
4. The method for controlling a multi-element converged new energy participation novel electric power system according to claim 1,
in the step 2, the large power grid regulation and control layer as an outer layer uniformly regulates and controls the virtual power plant, the centralized thermal power plant and other controllable resources based on a wide-area information acquisition system;
the virtual power plant and the large power grid regulation and control layer perform data acquisition and control instruction interaction through an information network, and perform interaction on a physical layer through a virtual public coupling point;
the virtual power plant management layer is internally provided with a multi-agent system, the multi-agent system consists of an emergency scheduling agent, an optimized scheduling agent, a photovoltaic agent, a wind power agent and an energy storage agent of the management layer, the scheduling agent receives agent information of the station layer in a centralized manner and issues control instructions, and the station layer agent monitors and uploads wind-light storage power information and issues the control instructions to a power and current controller of photovoltaic, wind power and energy storage;
the virtual power plant collects data to judge whether the novel power system is in a normal operation state or an emergency state, and sends active and reactive control commands to a photovoltaic agent, a wind power agent and an energy storage agent through an optimized dispatching agent or an emergency dispatching agent.
5. The method for controlling a multi-element converged new energy participation novel electric power system according to claim 1,
in the step 3, each control agent of photovoltaic, wind power and energy storage receives a control signal of an upper virtual power plant and sends the control signal to each controller, and the controller judges whether the control signal of the upper control agent is received; when the communication is normal, each controller normally receives a control signal of a control agent and sends out or absorbs corresponding active and reactive power according to a control requirement; when communication is abnormal, each controller can not receive control signals of a control agent, and the controllers form inner ring control signals according to the frequency and voltage deviation of the novel power system collected by the grid-connected point and output active power and reactive power required by the system.
6. New forms of energy of multivariate fusion participate in novel electric power system's controlling means, its characterized in that includes:
a coordination control architecture establishing unit: establishing a coordination control framework of a multi-element fusion new energy station based on the participation of a virtual power plant in the novel power system safety and stability support, wherein the coordination control framework comprises a large power grid regulation and control layer as an outer layer, a virtual power plant management layer as an upper layer and an internal station control layer as a lower layer, and the upper layer and the lower layer form an inner layer;
disturbance accident monitoring unit: monitoring whether a disturbance accident occurs to the power grid or not based on a wide area information acquisition system, and if the disturbance accident occurs, judging that the novel power system is in an emergency state and switching to an emergency dispatching agent of a virtual power plant by a virtual power plant in a virtual power plant management layer after receiving monitoring information; if no disturbance accident occurs, the virtual power plant receives the monitoring information to judge that the novel power system is in a normal state, based on the virtual power plant optimization scheduling agent, corresponding control is carried out according to different states, and corresponding instructions are sent to the internal station control layer;
a communication state determination unit: the photovoltaic, wind power and stored energy power and current controller of the internal station control layer judges the dispatching communication state with the virtual power plant management layer according to the message information, and performs in-station active and reactive power control according to the dispatching instruction in the normal communication state; if the communication is interrupted, the power and current controllers of the photovoltaic, the wind power and the stored energy carry out active and reactive output control according to the requirements of a novel power system.
7. The control device of a multi-element converged new energy participation new type power system according to claim 6,
in the coordination control framework establishing unit, a virtual power plant aggregates new energy, a large power grid of a novel power system is connected with the virtual public coupling point, and the large power grid system divides the inside into a centralized thermal power plant and an aggregated wind, light and energy storage multi-element fused new energy virtual power plant for respective management.
8. The control device of the multi-element fused new energy participation new type electric power system according to claim 6,
in the communication state judging unit, the photovoltaic power controller, the wind power controller and the current controller of the stored energy respectively receive control instructions issued by respective agents of the virtual power plant, and simultaneously judge active requirements and reactive requirements according to frequency and voltage deviation of a novel power system detected by respective controllers when the control instructions cannot be received, and carry out active and reactive output control through closed-loop control.
9. The control device of the multi-element fused new energy participation new type electric power system according to claim 6,
the disturbance accident monitoring unit is used as an outer large power grid regulation and control layer and is used for uniformly regulating and controlling virtual power plants, centralized thermal power plants and other controllable resources on the basis of a wide-area information acquisition system;
the virtual power plant and the large power grid regulation and control layer carry out data acquisition and control instruction interaction through an information network, and carry out interaction on a physical layer through a virtual public coupling point;
the virtual power plant management layer is internally provided with a multi-agent system, the multi-agent system consists of an emergency scheduling agent, an optimized scheduling agent, a photovoltaic agent, a wind power agent and an energy storage agent of the management layer, the scheduling agent receives agent information of the station layer in a centralized manner and issues control instructions, and the station layer agent monitors and uploads wind-light storage power information and issues the control instructions to a power and current controller of photovoltaic, wind power and energy storage;
the virtual power plant acquires data to judge whether the novel power system is in a normal operation state or an emergency state, and active and reactive control instructions are issued to a photovoltaic agent, a wind power agent and an energy storage agent through an optimization scheduling agent or an emergency scheduling agent.
10. The control device of a multi-element converged new energy participation new type power system according to claim 6,
in the communication state judging unit, each control agent of photovoltaic, wind power and energy storage receives a control signal of an upper virtual power plant and sends the control signal to each controller, and the controller judges whether the control signal of the upper control agent is received or not; when the communication is normal, each controller normally receives a control signal of a control agent and sends out or absorbs corresponding active and reactive power according to a control requirement; when communication is abnormal, each controller can not receive control signals of a control agent, and the controllers form inner ring control signals according to the frequency and voltage deviation of the novel power system collected by the grid-connected point and output active power and reactive power required by the system.
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