CN117650634B - Intelligent management and control device, system and management and control method for power grid energy storage equipment - Google Patents
Intelligent management and control device, system and management and control method for power grid energy storage equipment Download PDFInfo
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Abstract
The invention belongs to the field of power grid energy storage management and control, and particularly provides an intelligent management and control device, system and method for power grid energy storage equipment, wherein the method comprises the steps that the intelligent management and control device acquires reverse electric quantity and reverse power data acquired by an electric energy meter; if the reverse power is equal to zero, the energy storage device is not regulated; if the reverse power is greater than zero, the intelligent control device realizes pwm duty cycle modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, so as to realize gradient decreasing of the direct current output power of the energy storage device; the method comprises the steps of acquiring reverse electric quantity and reverse power data acquired by an electric energy meter in real time in the process of adjusting direct current output power of an energy storage device; and adjusting the direct current output power of the energy storage device to maintain the reverse power dynamic state to be zero if the moment that the reverse power dynamic state is equal to zero appears in the process that the direct current output power of the energy storage device is reduced to zero. The problem of confusion of electricity prices caused by power generation devices such as new energy and the like caused by redundant reverse electric energy generated by grid connection of the energy storage device can be effectively controlled.
Description
Technical Field
The invention relates to the technical field of power grid energy storage management and control, in particular to an intelligent management and control device, system and method for power grid energy storage equipment.
Background
In a novel power system mainly comprising new energy (wind power generation and photovoltaic power generation), the new energy is dominant. The electricity prices of wind power generation and photovoltaic power generation grid-connected points are clearly defined in the grid-connected policy and the grid management and control process of the government departments. The energy storage technology is applied to the power grid side, can provide auxiliary service, delay the power grid upgrading, promote the utilization of renewable energy sources, and is beneficial to enhancing the elasticity of the power grid and the capacity of peak clipping and valley filling of new energy sources.
It can be clear at present that the energy storage internet electricity price at the user side is still not specified, or all policies of the current outgoing platform are guiding the self-storage and self-use of the energy storage at the client side. However, if the client side is a pure new energy power station or a pure energy storage power station policy is very simple to execute, but if the power station of the client side is a comprehensive power station for supporting energy storage of new energy, the online electric quantity cannot distinguish whether the online electric quantity of the new energy is the online electric quantity of the energy storage end or the mixed surplus electric quantity of the new energy and the energy storage end, so that the statistical problem that the online electric quantity of the new energy is inaccurate exists.
The electric energy meter can collect in two directions, wherein the two directions are that electric energy (power and electric quantity) is obtained from a power grid and electric energy (power and electric quantity) is reversely conveyed to the power grid side, the electric energy directions of the electric energy are opposite, the electric energy is obtained from the power grid for short for off-grid, the electric energy is reversely conveyed for short for on-grid, and the corresponding power and electric quantity are called off-grid power, off-grid electric quantity or electric power and electric power respectively; the reverse direction is called the internet power and the internet power or the reverse power and the reverse power.
Disclosure of Invention
Aiming at the problem that the online electric quantity can not distinguish whether the online electric quantity of the new energy source is the online electric quantity of the energy storage end or the mixed redundant electric quantity of the new energy source and the energy storage end, the invention provides an intelligent management and control device, an intelligent management and control system and a management and control method for power grid energy storage equipment.
In a first aspect, the present invention provides an intelligent management and control device for a power grid energy storage device, including a control module, a first wiring terminal and a second wiring terminal, where the control module is connected with a communication module and/or a communication interface for communicating with the outside;
the first wiring end is connected with the second wiring end through a connecting line, a high-speed direct current switch is arranged on the connecting line of the first wiring end and the second wiring end, the high-speed direct current switch is connected with a control module, and the control module controls the on-off of the high-speed direct current switch to adjust the output power of the energy storage device.
As a preferred embodiment of the present invention, the apparatus further comprises a first circuit breaker connected to the control module;
the first circuit breaker is arranged on a connecting line between the second wire inlet end and the high-speed direct current switch or on a connecting line between the first wire inlet end and the high-speed direct current switch;
the control module controls the opening and closing of the first circuit breaker to control the connection state of the intelligent control device and external energy storage equipment.
As the optimization of the technical scheme of the invention, the communication module comprises a network communication module, a carrier module and a Bluetooth module which are connected with the control module;
the communication interface comprises an RJ45 interface and a 485 interface.
As the optimization of the technical scheme of the invention, the device also comprises a shell, wherein the control module, the communication module, the high-speed direct current switch and the first circuit breaker are arranged in the shell, and the communication interface, the first wiring terminal and the second wiring terminal are arranged on the shell;
the shell is also provided with a display module connected with the control module.
In a second aspect, the technical scheme of the invention provides an intelligent management and control system for power grid energy storage equipment, which comprises new energy power generation equipment, energy storage equipment, electric equipment, an electric energy meter and the intelligent management and control device according to the first aspect; the power grid line is connected with an electric energy meter through a transformer;
The new energy power generation equipment, the energy storage equipment and the electric equipment are connected in parallel to the input end of the electric energy meter, or the new energy power generation equipment, the energy storage equipment and the electric equipment are sequentially connected in series to the input end of the electric energy meter;
The intelligent control device is connected with the output end of the electric energy meter through a communication module or a communication interface and used for acquiring detection data of the electric energy meter, and the control module controls the on-off of the high-speed direct current switch according to the detection data of the electric energy meter to adjust the output power of the energy storage device.
As the optimization of the technical scheme of the invention, when the new energy power generation equipment, the energy storage equipment and the electric equipment are connected in parallel, the input end of the electric energy meter comprises a first input end, a second input end and a third input end;
the new energy power generation equipment is connected with a first input end of the electric energy meter through a second circuit breaker and a second inverter in sequence;
The electric equipment is connected with a second input end of the electric energy meter;
the energy storage device is connected with a third input end of the electric energy meter through the first inverter;
The intelligent control device is arranged on a line between the energy storage equipment and the first inverter.
As a preferred embodiment of the invention, the energy storage device is connected to the power grid line via a third circuit breaker.
As the optimization of the technical scheme of the invention, when the new energy power generation equipment, the energy storage equipment and the electric equipment are connected in series, a second circuit breaker is arranged on a line between the new energy power generation equipment and the energy storage equipment, a first inverter is arranged on a connecting line between the energy storage equipment and the electric equipment, and the intelligent control device is arranged on the connecting line between the energy storage equipment and the first inverter.
In a third aspect, the present invention provides an intelligent management and control method for a power grid energy storage device, where the method is applied to the intelligent management and control system for a power grid energy storage device in the second aspect, and the method includes:
the intelligent control device acquires reverse electric quantity and reverse power data acquired by the electric energy meter;
If the reverse power is equal to zero, the energy storage device is not regulated;
If the reverse power is greater than zero, the intelligent control device realizes pwm duty cycle modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, so as to realize gradient decreasing of the direct current output power of the energy storage device;
The method comprises the steps of acquiring reverse electric quantity and reverse power data acquired by an electric energy meter in real time in the process of adjusting direct current output power of an energy storage device;
And adjusting the direct current output power of the energy storage device to maintain the reverse power dynamic state to be zero if the moment that the reverse power dynamic state is equal to zero appears in the process that the direct current output power of the energy storage device is reduced to zero.
As the optimization of the technical scheme of the invention, the intelligent control device realizes pwm duty cycle modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, and further realizes the step of gradually decreasing the direct current output power of the energy storage device, which comprises the following steps:
The intelligent control device obtains the reverse power value of the electric energy meter and the set parameters, divides the reverse power of the electric energy meter into N equal parts of the parameter values according to the parameter values, realizes pwm duty ratio modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, further realizes gradient decreasing adjustment of the output power of the energy storage device each time by 1/N, and stops adjustment after multiple adjustment until the dynamic state of the reverse power of the electric energy meter side is zero or the direct current output power of the energy storage device is zero.
As a preferred embodiment of the present invention, the method further includes: when the system comprises a second circuit breaker, the second circuit breaker is used as a main switch of the equipment, the intelligent control device automatically operates after counting down for a set time after setting the parameter N, and the second circuit breaker is automatically closed at the moment;
when the intelligent control device needs to be replaced, the set parameter N is canceled, the second circuit breaker is automatically disconnected after the set time, and after the intelligent control device stops running, the exchange operation is executed.
It should be noted that, if the moment when the reverse power dynamic equals zero occurs in the process of decreasing the direct current output power of the energy storage device to zero, the direct current output power of the energy storage device is regulated stably or dynamically, and the reverse power dynamic is maintained to be zero; if the reverse power dynamic is equal to zero, the direct current output power of the energy storage device is reduced to zero, and the first relay of the intelligent control device can disconnect the energy storage device from the load side power grid directly for safety. The device can effectively control the problem of confusion of electricity prices caused by power generation devices such as new energy and the like caused by the fact that the energy storage device is connected to the grid to generate redundant reverse electric energy.
From the above technical scheme, the invention has the following advantages: because the online electricity price of the energy storage equipment is not specified, according to the problem that the online charging of the new energy power generation equipment is unreasonable, the output power of the energy storage equipment is adjusted by designing the intelligent control device so that the reverse power of the electric energy meter is zero or the online charging of the new energy power generation equipment is kept, and the online charging of the new energy power generation equipment for power generation is facilitated; meanwhile, the reasonable requirement of the customer on utilizing the energy storage device is protected, the economic benefit of the customer can be maximally protected, the defect of reverse internet surfing of the energy storage device is avoided in the general process, and the electricity price policy specified by the government department is strictly executed and maintained.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as its practical advantages.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic block diagram of an apparatus of one embodiment of the invention.
Fig. 2 is a schematic diagram of a display module according to an embodiment of the invention.
Fig. 3 is a schematic diagram of parallel connection in a system according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a series connection in a system provided by an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides an intelligent management and control device for a power grid energy storage device, which includes a control module 53, a first terminal 501 and a second terminal 502, where the control module 53 is connected with a communication module and/or a communication interface for communicating with the outside;
The first wiring terminal 501 is connected with the second wiring terminal 502 through a connecting line, a high-speed direct current switch 54 is arranged on the connecting line of the first wiring terminal 501 and the second wiring terminal 502, the high-speed direct current switch 54 is connected with the control module 53, and the on-off of the high-speed direct current switch 54 is controlled by the control module 53 to adjust the output power of the energy storage device 4.
In some embodiments, the apparatus further comprises a first circuit breaker 56 coupled to the control module 53;
the first circuit breaker 56 is disposed on a connection line between the second terminal 502 and the high-speed direct current switch 54, or the first circuit breaker 56 is disposed on a connection line between the first terminal 501 and the high-speed direct current switch 54;
the control module 53 controls the opening and closing of the first circuit breaker 56 to control the connection state of the intelligent management and control device and the external energy storage device.
The communication module comprises a network communication module 55, a carrier module 51 and a Bluetooth module 52 which are connected with the control module 53;
the communication interfaces include RJ45 interface 503 and 485 interface 504.
Here, the device further includes a housing, in which the control module 53, the communication module, the high-speed dc switch 54, and the first circuit breaker 56 are disposed, and the communication interface, the first terminal, and the second terminal are disposed on the housing;
The housing is further provided with a display module 506 connected to the control module. In this embodiment of the present invention, a key 505 connected to the control module 53 is further disposed on the housing, and is used for inputting a setting parameter through the key 505 or selecting a content displayed by the display module through the key.
The intelligent control device is arranged at the direct-current outlet end of the energy storage device, and at the direct-current side before the inlet wire of the energy storage inverter (the first inverter in the embodiment of the invention). When a plurality of energy storage devices are arranged, each path is provided with an intelligent control device. The intelligent control device mainly controls the energy storage equipment, so that the power supply obtains the electric energy from the energy storage equipment. In the embodiment of the invention, the device is connected with the energy storage equipment, the energy storage equipment supplies power to the device, a control module of the device adopts a stm32 and above high-speed embedded singlechip, a 485 port, an RJ45 interface (network cable interface) and a carrier module (if a power carrier scheme is selected, a power carrier modulation module is additionally arranged at an acquired end); the system comprises a Bluetooth module, an ESP8266 WiFi module and a 4/5G network communication module; a direct-current high-speed switch (igbt), a display module; the device provided by the embodiment of the invention is also provided with a direct current power acquisition module connected with the control module.
The 485 port is used for collecting reverse data by utilizing an electric energy meter or a carrier module, the RJ45 interface, the Bluetooth module and the ESP8266 WiFi module are mainly used for communication between intelligent control devices, the 4/5G network communication module is mainly used for communication between control equipment and an upper computer system, the high-speed igbt switch is mainly used for pwm duty ratio regulation and control, control of output power of a direct-current side of the energy storage equipment is realized, the display module is used for man-machine interaction of setting pwm resolution by a user, and the direct-current power collection module connected with the control module is used for collecting the power of the direct-current side of the energy storage equipment.
After all the wiring is connected, the intelligent control device scans reverse power on the electric energy meter in real time from an electric energy meter 485 interface or a carrier module, if new energy power generation equipment and energy storage equipment generate electricity simultaneously and the generated power is larger than the used power in the daytime, the intelligent control device firstly collects the reverse power, the control device on-board stm32 singlechip can divide the collected reverse power into N equal parts through parameters set by the control device with an interactive display module, the gradient decreasing modulation of the pwm of the direct current power source at each 1/N is realized, if the reverse power generation power is P at this moment, the singlechip can perform P- (P/N) X adjustment for X times (X < = N) until P is equal to zero, and if the reverse power is always present in the process, the singlechip continuously performs decreasing adjustment until the direct current power generation power is zero, namely the energy storage equipment is powered off; if X reaches a certain value in the process, no reverse power exists, and the generated power and the used power at the moment are dynamically balanced, the singlechip dynamically controls the energy storage equipment to dynamically discharge all the time according to the state of the energy storage equipment at the moment.
As shown in fig. 3 and fig. 4, an embodiment of the present invention provides an intelligent control system for a power grid energy storage device, which includes a new energy power generation device 1, an energy storage device 4, electric equipment 6, an electric energy meter 10, and an intelligent control device 5 according to the above embodiment; the power grid line 7 is connected with an electric energy meter 10 through a transformer 9;
The new energy power generation equipment 1, the energy storage equipment 4 and the electric equipment 6 are connected in parallel to the input end of the electric energy meter 10, or the new energy power generation equipment 1, the energy storage equipment 4 and the electric equipment 6 are sequentially connected in series to the input end of the electric energy meter 10;
The intelligent control device 5 is connected with the output end of the electric energy meter through a communication module or a communication interface and is used for acquiring detection data of the electric energy meter, and the control module controls the on-off of the high-speed direct current switch according to the detection data of the electric energy meter to adjust the output power of the energy storage device.
In one embodiment, when the new energy power generation device 1, the energy storage device 4 and the electric equipment 6 are connected in parallel, the input end of the electric energy meter 10 includes a first input end, a second input end and a third input end;
The new energy power generation equipment 1 is connected with a first input end of the electric energy meter 10 through the second circuit breaker 3 and the second inverter 11 in sequence;
the electric equipment 6 is connected with a second input end of the electric energy meter 10;
The energy storage device 4 is connected with a third input end of the electric energy meter 10 through the first inverter 8;
the intelligent control device 5 is arranged on the connection line 2 between the energy storage device 4 and the first inverter 8.
As a preference of the solution according to the invention, the energy storage device 4 is connected to the grid line 7 via a third circuit breaker 12.
The intelligent control device collects the reverse electric quantity and reverse power data of the upper grid point, namely, acquires the reverse power of the electric energy meter, the reverse electric quantity exists in daytime, the situation does not interfere with photovoltaic power generation, the direct-current end power of the energy storage device is directly and automatically adjusted until the direct-current output power of the energy storage device is reduced to zero, if the reverse power is always larger than zero in the process of reducing to zero, the power supply power of the new energy power generation device completely meets the power consumption requirement, the discharging power of the energy storage device has no effect on the electric equipment 6, and the intelligent control device breaks the power generation connection of the energy storage device by controlling the first breaker to break; if the moment in time when the reverse power dynamics are equal to zero occurs during the decrementing, the reverse power dynamics are maintained at zero. If the reverse electric quantity or the reverse power does not exist in the daytime, the power of the new energy power generation equipment and the power of the energy storage equipment cannot meet the load of a user side, namely the load of electric equipment, so that the intelligent control device does not regulate the whole power generation system, and the new energy power generation equipment and the energy storage equipment generate power at full power. In the embodiment of the invention, the new energy power generation can be set as various power generation equipment with definite internet power prices, such as photovoltaic power generation equipment, wind power equipment and the like.
At night, if a user uses energy storage, the new energy power generation equipment has no power generation power, the intelligent control device adjusts the power generation power of the energy storage equipment, namely the direct current output power of the energy storage equipment, reverse power can not occur even if the power generation power of the energy storage equipment is larger than load power, and the dynamic state of the reverse power can only be maintained to be zero.
In another embodiment, when the new energy power generation device 1, the energy storage device 4 and the electric equipment 6 are connected in series, the second circuit breaker 3 is arranged on the connecting line 2 between the new energy power generation device 1 and the energy storage device 4, the first inverter 8 is arranged on the connecting line between the energy storage device 4 and the electric equipment 6, and the intelligent management and control device 5 is arranged on the connecting line between the energy storage device 4 and the first inverter 8. The series scheme is rarely encountered in practical application, and when energy storage and new energy are connected in series, the control equipment can maintain the reverse power dynamic state of the electric energy meter to be zero, and the condition of reverse internet power cannot occur.
The embodiment of the invention provides an intelligent control method for power grid energy storage equipment, which is applied to the intelligent control system for power grid energy storage equipment, and comprises the following steps:
the intelligent control device acquires reverse electric quantity and reverse power data acquired by the electric energy meter;
If the reverse power is equal to zero, the energy storage device is not regulated;
If the reverse power is greater than zero, the intelligent control device realizes pwm duty cycle modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, so as to realize gradient decreasing of the direct current output power of the energy storage device;
The method comprises the steps of acquiring reverse electric quantity and reverse power data acquired by an electric energy meter in real time in the process of adjusting direct current output power of an energy storage device;
And adjusting the direct current output power of the energy storage device to maintain the reverse power dynamic state to be zero if the moment that the reverse power dynamic state is equal to zero appears in the process that the direct current output power of the energy storage device is reduced to zero.
The intelligent control device controls the on-off of the high-speed direct current switch to realize pwm duty ratio modulation of the energy storage device, and further realizes the step of gradually decreasing the direct current output power of the energy storage device, wherein the step comprises the following steps:
The intelligent control device obtains the reverse power value of the electric energy meter and the set parameters, divides the reverse power of the electric energy meter into N equal parts of the parameter values according to the parameter values, realizes pwm duty ratio modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, further realizes gradient decreasing adjustment of the output power of the energy storage device each time by 1/N, and stops adjustment after multiple adjustment until the dynamic state of the reverse power of the electric energy meter side is zero or the direct current output power of the energy storage device is zero.
The method further comprises the steps of: when the system comprises a second circuit breaker, the second circuit breaker is used as a main switch of the equipment, the intelligent control device automatically operates after counting down for a set time after setting the parameter N, and the second circuit breaker is automatically closed at the moment;
when the intelligent control device needs to be replaced, the set parameter N is canceled, the second circuit breaker is automatically disconnected after the set time, and after the intelligent control device stops running, the exchange operation is executed. It should be noted that, during the process of monitoring and controlling the reverse power by the intelligent control device, the second circuit breaker cannot be opened.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The intelligent control system for the power grid energy storage equipment is characterized by comprising new energy power generation equipment, energy storage equipment, electric equipment, an electric energy meter and an intelligent control device; the power grid line is connected with an electric energy meter through a transformer; the intelligent management and control device comprises a control module, a first wiring terminal and a second wiring terminal, wherein the control module is connected with a communication module and/or a communication interface for communicating with the outside;
The first wiring terminal is connected with the second wiring terminal through a connecting line, a high-speed direct current switch is arranged on the connecting line of the first wiring terminal and the second wiring terminal, and the high-speed direct current switch is connected with the control module;
The intelligent control device further comprises a first circuit breaker connected with the control module; the first circuit breaker is arranged on a connecting line between the second wiring terminal and the high-speed direct current switch or on a connecting line between the first wiring terminal and the high-speed direct current switch; the control module controls the opening and closing of the first circuit breaker to control the connection state of the intelligent control device and external energy storage equipment;
The new energy power generation equipment, the energy storage equipment and the electric equipment are connected in parallel to the input end of the electric energy meter; the input end of the electric energy meter comprises a first input end, a second input end and a third input end; the new energy power generation equipment is connected with a first input end of the electric energy meter through a second circuit breaker and a second inverter in sequence; the electric equipment is connected with a second input end of the electric energy meter; the energy storage device is connected with a third input end of the electric energy meter through the first inverter; the intelligent control device is arranged on a line between the energy storage equipment and the first inverter;
The intelligent control device is connected with the output end of the electric energy meter through a communication module or a communication interface and is used for acquiring detection data of the electric energy meter, and the control module controls the on-off of the high-speed direct current switch according to the detection data of the electric energy meter to adjust the output power of the energy storage device;
the working process of the system comprises the following steps:
The intelligent control device acquires reverse electric quantity and reverse power data acquired by the electric energy meter; the reverse electric quantity is the electric quantity of surfing the Internet, and the reverse power is the power of surfing the Internet;
If the reverse power is equal to zero, the energy storage device is not regulated;
If the reverse power is greater than zero, the intelligent control device realizes pwm duty cycle modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, so as to realize gradient decreasing of the direct current output power of the energy storage device;
The method comprises the steps of acquiring reverse electric quantity and reverse power data acquired by an electric energy meter in real time in the process of adjusting direct current output power of an energy storage device;
if the reverse power is always larger than zero in the process that the direct current output power of the energy storage device is reduced to zero, the intelligent control device disconnects the energy storage device by controlling the first circuit breaker; maintaining the power generation of the new energy power generation equipment to be on line;
And adjusting the direct current output power of the energy storage device to maintain the reverse power dynamic state to be zero if the moment that the reverse power dynamic state is equal to zero appears in the process that the direct current output power of the energy storage device is reduced to zero.
2. The intelligent management and control system of the power grid energy storage device according to claim 1, wherein the communication module comprises a network communication module, a carrier module and a Bluetooth module which are connected with the control module;
the communication interface comprises an RJ45 interface and a 485 interface.
3. The intelligent control system of a power grid energy storage device of claim 2, wherein the intelligent control device further comprises a housing, the control module, the communication module, the high-speed direct current switch and the first circuit breaker are disposed in the housing, and the communication interface, the first terminal and the second terminal are disposed on the housing;
the shell is also provided with a display module connected with the control module.
4. A method for intelligently controlling power grid energy storage equipment, which is applied to the power grid energy storage equipment intelligent control system as claimed in any one of claims 1 to 3, and comprises the following steps:
the intelligent control device acquires reverse electric quantity and reverse power data acquired by the electric energy meter;
If the reverse power is equal to zero, the energy storage device is not regulated;
If the reverse power is greater than zero, the intelligent control device realizes pwm duty cycle modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, so as to realize gradient decreasing of the direct current output power of the energy storage device;
The method comprises the steps of acquiring reverse electric quantity and reverse power data acquired by an electric energy meter in real time in the process of adjusting direct current output power of an energy storage device;
If the reverse power is always larger than zero in the process that the direct-current output power of the energy storage device is reduced to zero, the intelligent control device disconnects the energy storage device by controlling the first circuit breaker, so that the power generation of the new energy power generation device is kept on line;
And adjusting the direct current output power of the energy storage device to maintain the reverse power dynamic state to be zero if the moment that the reverse power dynamic state is equal to zero appears in the process that the direct current output power of the energy storage device is reduced to zero.
5. The intelligent control method for the power grid energy storage device according to claim 4, wherein the intelligent control device realizes pwm duty cycle modulation of the energy storage device by controlling on-off of the high-speed direct current switch, and further realizes gradient decreasing of the direct current output power of the energy storage device, comprising:
The intelligent control device obtains the reverse power value of the electric energy meter and the set parameters, divides the reverse power of the electric energy meter into N equal parts of the parameter values according to the parameter values, realizes pwm duty ratio modulation of the energy storage device by controlling the on-off of the high-speed direct current switch, further realizes gradient decreasing adjustment of the output power of the energy storage device each time by 1/N, and stops adjustment after multiple adjustment until the dynamic state of the reverse power of the electric energy meter side is zero or the direct current output power of the energy storage device is zero.
6. The intelligent management and control method for a power grid energy storage device according to claim 5, further comprising: when the system comprises a second circuit breaker, the second circuit breaker is used as a main switch of the equipment, the intelligent control device automatically operates after counting down for a set time after setting the parameter N, and the second circuit breaker is automatically closed at the moment;
when the intelligent control device needs to be replaced, the set parameter N is canceled, the second circuit breaker is automatically disconnected after the set time, and after the intelligent control device stops running, the exchange operation is executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410124030.7A CN117650634B (en) | 2024-01-30 | 2024-01-30 | Intelligent management and control device, system and management and control method for power grid energy storage equipment |
Applications Claiming Priority (1)
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