Microgrid control system based on new energy application

Abstract

The invention relates to a micro-grid control system based on new energy application, which is applied to the field of power supply or power distribution systems and comprises two protection boxes, power storage equipment and power storage backup equipment which are respectively arranged in the two protection boxes, and a micro-grid control processing unit which is respectively matched with the power storage equipment and the power storage backup equipment, through cooperation of the discharge state induction assembly, the self-heating state induction assembly and the abnormity forced regulation and control unit, bidirectional data acquisition of states of the electricity storage equipment and the electricity storage backup equipment can be effectively realized, abnormal data of electricity storage can be timely acquired, effectiveness of electricity storage and leveling in the application process of the micro-grid is guaranteed, and the utilization rate of the micro-grid is improved. Therefore, performance damage caused by long-time power saturation of the power storage equipment and the power storage backup equipment is avoided, the abnormal problem of thermal runaway is avoided, and the effectiveness and safety of the power storage equipment and the power storage backup equipment in application in the micro-grid are effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to a microgrid control system, and in particular to a microgrid control system based on new energy application and applied in the field of power supply or distribution system. Background Art

[0002] Micro-Grid refers to a small power system composed of distributed power sources, loads, power storage, power distribution and control systems. The micro-grid control system is a small power generation and distribution system composed of distributed power sources, power storage devices, energy conversion devices, related loads and monitoring and protection devices. When micro-grids are used in smart parks, the load energy consumption and the generation of new energy power have large fluctuations, which will cause instability in the operation of micro-grids.

[0003] In order to solve the problem of the volatility of park load energy consumption and the volatility of new energy electricity on the operation of microgrids, a microgrid control system in the market adopts the design of power storage technology and has a certain market share.

[0004] The specification of Chinese invention patent CN109980676B discloses a microgrid control system and a microgrid, wherein the microgrid control system includes: a grid-connected switch, an energy router, a first controller and a second controller, wherein the first controller controls the closing and opening of the grid-connected switch, and sends a first control instruction according to the state of the microgrid control system, and the second controller receives the first control instruction from the first controller, and controls the energy router in response to the first control instruction. The microgrid control system and the microgrid enhance the stability of the microgrid operation through hierarchical control; in addition, through dual closed-loop control of voltage and current, the ability to carry 100% unbalanced load in an off-grid state is achieved.

[0005] The specification of Chinese invention patent application CN119419827A discloses a microgrid adaptive load unloading method. The method comprehensively considers the power imbalance overload and low frequency risks. When the microgrid is in the grid-connected operation mode, it performs a preliminary evaluation and calculation of the power shortage in real time, and evaluates whether there will be an overload operation risk when the main grid fails and the microgrid switches to island operation. Based on this, the initial load unloading control is performed when the main grid fails; then, the time margin for the frequency to drop to the frequency threshold is estimated in real time according to the frequency change rate of the microgrid, and the risk level of the low frequency margin is judged, and the load is further unloaded accordingly. A microgrid control system is also disclosed. It can realize the frequency support function of the microgrid system under the island operation condition, avoid the microgrid protection shutdown caused by power imbalance and frequency drop, ensure the continuous power supply of important loads of the microgrid system, and try to meet the power supply requirements of the three-level loads, so as to improve the stability and power supply utilization of the microgrid.

[0006] Although the above technologies can stabilize the operation of microgrids in the application process to a certain extent, promote their power supply stability, and ensure their effectiveness in smart park applications. However, when the microgrid supplies power to the smart park, in order to balance the power supply of new energy and load changes, power storage equipment will be used to store and level the power to further stabilize the operation of the microgrid. However, in the process of using power storage technology to store and level power, the microgrid control system cannot effectively verify and judge the fault state of the power storage equipment and the effectiveness of its leveling power control, which makes it impossible to execute the originally effective power balance and power storage management strategies normally. It may also cause the power storage equipment to be in a state of power saturation for a long time, causing the performance of the power storage equipment to be damaged, and thermal runaway anomalies to occur, thereby reducing the safety of microgrid applications in smart parks. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to verify and judge the operating status of the energy storage equipment and the control status of power leveling during the operation of the microgrid, so as to avoid the energy storage equipment from being in a long-term power saturation state due to control abnormalities, thereby ensuring the performance of the energy storage equipment and promoting the safety of microgrid applications in smart parks.

[0008] In order to solve the above problems, the present invention provides a microgrid control system based on new energy application, comprising two protection boxes, power storage devices and power storage backup devices respectively placed in the two protection boxes, and microgrid control processing units respectively matched with the power storage devices and the power storage backup devices, the front and rear ends of the two protection boxes are fixedly connected with power storage state collection cylinders, the left side of the power storage state collection cylinder is provided with a self-heating state sensing component, and the right side of the power storage state collection cylinder is provided with a discharge state sensing component; The input end of the microgrid control processing unit is connected to the power storage device status acquisition unit, and the output end of the microgrid control processing unit is connected to the power storage control unit and the abnormal forced control unit; The power storage device state acquisition unit includes a power storage device state dual processing module, the input end of the power storage device state dual processing module is connected to the discharge trigger acquisition module and the self-heating trigger acquisition module, and the output end of the power storage device state dual processing module is connected to the discharge state output module and the self-heating state output module; The input end of the discharge trigger acquisition module is connected to the discharge state sensing component signal, the input end of the self-heating trigger acquisition module is connected to the self-heating state sensing component signal, and the output ends of the discharge state output module and the self-heating state output module are both connected to the microgrid control processing unit signal; The output ends of the power storage control unit and the abnormal forced control unit are respectively connected to the power storage device and the power storage backup device signal, and the instruction priority of the abnormal forced control unit is higher than the instruction priority of the power storage control unit.

[0009] In the above-mentioned microgrid control system based on new energy application, through the cooperation of discharge state sensing components, self-heating state sensing components and abnormal forced control units, it is possible to effectively realize two-way data collection of the status of power storage equipment and power storage backup equipment, and further assist the microgrid control processing unit to judge the effectiveness of the power regulation of power storage equipment and power storage backup equipment, and can obtain abnormal data of power storage in time to ensure the effectiveness of power storage and power leveling during microgrid application.

[0010] As a supplement to the present application, a bidirectional isolation column is fixedly connected to the middle part of the power storage status collection tube, a trigger piece that cooperates with the self-heating status sensing component is fixedly connected to the left end of the bidirectional isolation column, and a discharge trigger piece that cooperates with the discharge status sensing component is fixedly connected to the right end of the bidirectional isolation column.

[0011] As a supplement to the present application, a heat conduction bracket is fixedly connected to the left end of the power storage status collection tube, the rear end of the heat conduction bracket extends into the protective box and is fixedly connected to a heat conduction insert, the heat conduction insert is abutted against the corresponding power storage device and power storage backup device, and the front end of the heat conduction bracket extends into the power storage status collection tube and abuts against the heat conduction column.

[0012] As a supplement to the present application, the self-heating state sensing component includes a heat conduction column fixedly arranged on the left inner wall of the power storage state collection tube, the right end of the heat conduction column is fixedly connected to a heat deformation spiral strip, the right end of the heat deformation spiral strip is fixedly connected to a thermal contact block that slides with the inner wall of the power storage state collection tube, and the thermal contact block cooperates with the trigger sheet, and the input end of the self-heating trigger collection module is connected to the thermal contact block signal.

[0013] As a supplement to the present application, a wiring harness guide tube is fixedly connected to the right end of the power storage status collection tube, the rear end of the wiring harness guide tube extends into the protective box, the front end of the wiring harness guide tube extends into the power storage status collection tube, and cooperates with the discharge status sensing component, and a wire harness is provided in the wiring harness guide tube, which is electrically connected to the corresponding power storage equipment and power storage backup equipment, and the front end of the wire harness is electrically connected to the induction electromagnetic block through the wiring harness guide tube.

[0014] As a supplement to the present application, the discharge state sensing component includes an induction electromagnetic block fixedly arranged on the right inner wall of the power storage state collection tube, the left end of the induction electromagnetic block is fixedly connected to a reset contraction spring, the left end of the reset contraction spring is fixedly connected to a discharge contact block that slides with the inner wall of the power storage state collection tube, and the discharge contact block cooperates with the discharge trigger sheet, and the right end of the discharge contact block is embedded with a strong magnetic block that cooperates with the induction electromagnetic block, and the input end of the discharge trigger collection module is connected to the discharge contact block signal.

[0015] As a supplement to this application, the input end of the microgrid control processing unit is also connected to a new energy power collection unit, a power storage device power collection unit, a load data collection unit and a control instruction optimization unit, and the output end of the microgrid control processing unit is also connected to a load control unit, an on-grid and off-grid control unit and an emergency warning unit; The input end of the new energy power acquisition unit is connected to the new energy power end signal, the input end of the power storage device power acquisition unit is connected to the power storage device and the power storage backup device signal respectively, the input end of the load data acquisition unit is connected to the park load end signal, and the input end of the control instruction optimization unit is connected to the smart park control platform signal; The output end of the load control unit is connected to the signal of the load end of the park, and the output end of the off-grid control unit is connected to the signal of the intelligent power exchange cabinet, and the output end of the emergency warning unit is connected to the signal of the alarm set on the smart park control platform.

[0016] As a further improvement of the present application, the right end of the heat conduction column and the left end of the heat contact block are fixedly connected with an initial thermal deformation guide rod, and the thermal deformation spiral strip is sleeved on the outside of the initial thermal deformation guide rod, and the input end of the dual processing module of the power storage device state is also connected to a self-heating initial state acquisition module, and the input end of the self-heating initial state acquisition module is connected to the initial thermal deformation guide rod signal.

[0017] As a further improvement of the present application, the left end of the induction electromagnetic block and the right end of the discharge contact block are fixedly connected to the initial discharge guide rod, and the reset contraction spring is sleeved on the outside of the initial discharge guide rod, and the input end of the energy storage device status dual processing module is also connected to the discharge initial state acquisition module, and the input end of the discharge initial state acquisition module is connected to the initial discharge guide rod signal.

[0018] In summary, through the cooperation of the discharge state sensing component, the self-heating state sensing component and the abnormal forced control unit, it is possible to effectively realize the two-way data collection of the status of the power storage equipment and the power storage backup equipment, effectively realize the data verification of the status of the power storage equipment and the power storage backup equipment and the leveling power control status, and further assist the microgrid control processing unit to judge the effectiveness of the power storage equipment and the power storage backup equipment. The abnormal data of the power storage can be obtained in time to ensure the effectiveness of the power storage and leveling power during the application of the microgrid, thereby avoiding the performance damage caused by the long-term power saturation of the power storage equipment and the power storage backup equipment, and avoiding the abnormal problem of thermal runaway, thereby effectively ensuring the effectiveness and safety of the power storage equipment and the power storage backup equipment in the microgrid. In addition, through the cooperation of two-way data collection and the abnormal forced control unit, the abnormalities of the power storage equipment and the power storage backup equipment can be enforced, which can effectively assist the maintenance personnel to make timely and effective emergency measures and promote the safety of the application of microgrids in smart parks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A topological diagram of the microgrid control system when applied in the first and second implementation modes of the present application; Figure 2 A control logic diagram of a microgrid control system according to the first and second implementation modes of the present application; Figure 3 This is an axonometric diagram of the power storage state collection cylinder of the first and second embodiments of the present application; Figure 4 This is an exploded view of the power storage state collection tube of the first and second embodiments of the present application; Figure 5 It is a top view cross-sectional view of the power storage state collection tube of the first and second embodiments of the present application; Figure 6 It is a top view cross-sectional view of the power storage state collection tube in the self-heating triggering state of the first and second embodiments of the present application; Figure 7 It is a top view cross-sectional view of the power storage state collection tube in the discharge trigger state of the first and second embodiments of the present application; Figure 8 This is a state diagram of the bidirectional isolation column when being bidirectionally triggered in the first and second embodiments of the present application; Fig. 9 Axonometric diagram of the power storage device and power storage backup device in the first and second embodiments of the present application; Fig.10 This is a top view cross-sectional view of the power storage state collection tube in the initial self-heating state of the second embodiment of the present application; Fig.11 This is a top view of the cross-sectional view of the storage state collection tube in the initial discharge state of the second embodiment of the present application.

[0020] Description of the numbers in the figure: 1 electricity storage device, 11 electricity storage backup device, 2 protection box, 3 electricity storage state collection tube, 31 heat conduction bracket, 311 heat conduction insert, 32 harness guide tube, 33 bidirectional isolation column, 331 trigger sheet, 332 discharge trigger sheet, 4 discharge state sensing component, 41 induction electromagnetic block, 42 ​​discharge contact block, 43 initial discharge guide rod, 44 reset contraction spring, 5 self-heating state sensing component, 51 heat conduction column, 52 thermal deformation spiral strip, 53 thermal contact block, 54 initial thermal deformation guide rod. DETAILED DESCRIPTION

[0021] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0022] The first implementation method: Figure 1 - Fig. 9The microgrid control system based on the application of new energy is shown, which includes two protection boxes 2, power storage devices 1 and power storage backup devices 11 placed in the two protection boxes 2, and microgrid control processing units respectively matched with the power storage devices 1 and the power storage backup devices 11. The front and rear ends of the two protection boxes 2 are fixedly connected with power storage state collection cylinders 3, and the power storage state collection cylinders 3 are respectively matched with the corresponding power storage devices 1 and the power storage backup devices 11. A self-heating state sensing component 5 is arranged on the left side of the power storage state collection cylinder 3, and a discharge state sensing component 4 is arranged on the right side of the power storage state collection cylinder 3. The input end of the microgrid control processing unit is connected to the power storage device status acquisition unit, and the output end of the microgrid control processing unit is connected to the power storage control unit and the abnormal forced control unit; The power storage device state acquisition unit includes a power storage device state dual processing module, the input end of the power storage device state dual processing module is connected to the discharge trigger acquisition module and the self-heating trigger acquisition module, and the output end of the power storage device state dual processing module is connected to the discharge state output module and the self-heating state output module; The input end of the discharge trigger acquisition module is connected to the discharge state sensing component 4, the input end of the self-heating trigger acquisition module is connected to the self-heating state sensing component 5, the output ends of the discharge state output module and the self-heating state output module are both connected to the microgrid control processing unit, and the discharge state output module and the self-heating state output module are independently arranged in parallel; The output ends of the power storage control unit and the abnormal forced control unit are respectively connected to the power storage device 1 and the power storage backup device 11 by signal, and the command priority of the abnormal forced control unit is higher than the command priority of the power storage control unit. Through the cooperation of the discharge state sensing component 4, the self-heating state sensing component 5 and the abnormal forced control unit, it is possible to effectively realize two-way data collection of the state of the power storage device 1 and the power storage backup device 11, effectively realize the data verification of the state of the power storage device 1 and the power storage backup device 11 and the leveling power control state, and further assist the microgrid control processing unit to judge the effectiveness of the power energy regulation effect on the power storage device 1 and the power storage backup device 11. It can obtain abnormal data of power storage in time, ensure the effectiveness of power storage and power leveling during the application of microgrid, so as to avoid performance damage caused by long-term power saturation of power storage device 1 and power storage backup device 11, and avoid abnormal problems such as thermal runaway, thereby effectively ensuring the effectiveness and safety of power storage device 1 and power storage backup device 11 in microgrid application, and can also enforce the execution of abnormalities of power storage device 1 and power storage backup device 11 through two-way data collection and the cooperation of abnormal forced control unit, which can effectively assist maintenance personnel to make timely and effective emergency measures and promote the safety of microgrid application in smart park.

[0023] Figure 3 - Fig. 9 It is shown that a bidirectional isolation column 33 is fixedly connected to the middle part of the power storage state collection tube 3, a trigger piece 331 matched with the self-heating state sensing component 5 is fixedly connected to the left end of the bidirectional isolation column 33, and a discharge trigger piece 332 matched with the discharge state sensing component 4 is fixedly connected to the right end of the bidirectional isolation column 33. The cooperation between the trigger piece 331 and the discharge trigger piece 332 can realize the bidirectional trigger feedback of the self-heating and discharge data of the power storage device 1 and the power storage backup device 11, thereby promoting the comprehensiveness and effectiveness of their data collection, and can effectively realize the comprehensive collection of the status data of the power storage device 1 and the power storage backup device 11, promote the effectiveness of the subsequent activity regulation, and also ensure the effectiveness and timeliness of the power storage of the power storage device 1 and the power storage backup device 11 for the power support of the smart park.

[0024] Figure 1 - Fig. 9 It is shown that a heat conduction bracket 31 is fixedly connected to the left end of the power storage state collection tube 3, and the rear end of the heat conduction bracket 31 extends into the protection box 2 and is fixedly connected to a heat conduction insert 311. The heat conduction insert 311 abuts against the power storage device 1 and the power storage backup device 11 that are matched with it. The front end of the heat conduction bracket 31 extends into the power storage state collection tube 3 and abuts against the heat conduction column 51. The cooperation of the heat conduction insert 311, the heat conduction bracket 31 and the heat conduction column 51 can conduct the heat generated by the power storage device 1 and the power storage backup device 11. When a temperature abnormality occurs, the self-heating state is displayed and triggered through the sensing action of the self-heating state sensing component 5, thereby promoting the thermal triggering efficiency and ensuring the timeliness and effectiveness of the subsequent abnormal regulation of the power storage device 1 and the power storage backup device 11.

[0025] Figure 1 - Fig. 9The self-heating state sensing component 5 is shown to include a heat conduction column 51 fixedly arranged on the left inner wall of the power storage state collection tube 3, and a heat deformation spiral strip 52 is fixedly connected to the right end of the heat conduction column 51. The heat deformation spiral strip 52 is made of memory metal material and can produce elongation deformation when the temperature rises to its deformation temperature, and produce recovery deformation after the temperature is restored. The heat deformation spiral strip 52 can be made of multiple sections of memory metal materials with different deformation temperatures as needed, or it can be made of one section of memory metal material as needed. The right end of the heat deformation spiral strip 52 is fixedly connected to a thermal contact block 53 that is slidably matched with the inner wall of the power storage state collection tube 3, and The thermal contact block 53 cooperates with the trigger sheet 331, and the input end of the self-heating trigger acquisition module is connected to the thermal contact block 53 signal. The self-heating trigger acquisition module can collect trigger data and output the data through the self-heating state output module, so that the microgrid control processing unit can effectively avoid thermal runaway according to the acquired data, and use the abnormal forced control unit according to the abnormal data to realize the forced cutting off of charging or forced discharging of the power storage device 1 and the power storage backup device 11, thereby avoiding the failure of the power storage control unit to control, thereby ensuring the effectiveness of the control of the power storage device 1 and the power storage backup device 11.

[0026] Figure 1 - Fig. 9 It is shown that the right end of the power storage state collection tube 3 is fixedly connected with a wire harness guide tube 32, the rear end of the wire harness guide tube 32 extends into the protective box 2, and the front end of the wire harness guide tube 32 extends into the power storage state collection tube 3 and cooperates with the discharge state sensing component 4. The wire harness guide tube 32 is provided with a wire harness electrically connected to the power storage device 1 and the power storage backup device 11 respectively corresponding to it. The front end of the wire harness is electrically connected to the induction electromagnetic block 41 through the wire harness guide tube 32. The wire harness guide tube 32 can protect and guide the wire harness, and realize the electrical connection between the power storage device 1 and the induction electromagnetic block 41 and the power storage backup device 11 and the induction electromagnetic block 41 through the wire harness, so that it can be passed Whether the induction electromagnetic block 41 generates electromagnetic effect, the discharge state of the power storage device 1 and the power storage backup device 11 is reacted, and the discharge state data of the power storage device 1 and the power storage backup device 11 are effectively collected, which is convenient for the subsequent real-time verification of the status of the power storage device 1 and the power storage backup device 11. In this way, when the power storage and power leveling are invalid, invalid data can be obtained in time to avoid the problem of continuous power saturation caused by long-term charging of the power storage device 1 and the power storage backup device 11, thereby reducing the performance damage of the power storage device 1 and the power storage backup device 11 during abnormalities and ensuring the application safety of the power storage device 1 and the power storage backup device 11.

[0027] Figure 1 - Fig. 9The discharge state sensing component 4 is shown to include an induction electromagnetic block 41 fixedly arranged on the right inner wall of the power storage state collection tube 3, a reset contraction spring 44 is fixedly connected to the left end of the induction electromagnetic block 41, a discharge contact 42 slidingly matched with the inner wall of the power storage state collection tube 3 is fixedly connected to the left end of the reset contraction spring 44, and the discharge contact 42 cooperates with the discharge trigger sheet 332, and a strong magnetic block matching with the induction electromagnetic block 41 is embedded at the right end of the discharge contact 42, and the input end of the discharge trigger collection module is connected to the discharge contact 42 signal, and the cooperation between the discharge trigger collection module and the discharge contact 42 can realize the effective monitoring of the discharge data of the power storage device 1 and the power storage backup device 11, and timely and real-time display of the status of the power storage device 1 and the power storage backup device 11 to the microgrid control processing unit, promote its regulation and guarantee function on the power storage device 1 and the power storage backup device 11, and reduce the performance damage of the power storage device 1 and the power storage backup device 11 caused by the discharge process.

[0028] Figure 1 and Figure 2 It is shown that the input end of the microgrid control processing unit is also connected to a new energy power collection unit, a power storage device power collection unit, a load data collection unit and a control instruction optimization unit, and the output end of the microgrid control processing unit is also connected to a load control unit, an on-grid and off-grid control unit and an emergency warning unit; The input end of the new energy power acquisition unit is connected to the new energy power end signal, the input end of the power storage device power acquisition unit is connected to the power storage device 1 and the power storage backup device 11 respectively, the input end of the load data acquisition unit is connected to the park load end signal, and the input end of the control instruction optimization unit is connected to the smart park control platform signal; The output end of the load control unit is connected to the signal of the park load end, and the output end of the off-grid control unit is connected to the signal of the intelligent power exchange cabinet. The intelligent power exchange cabinet is a structure in the prior art and is directly quoted here without any changes to its structure and principle. It will not be repeated here. The output end of the emergency warning unit is connected to the alarm signal set on the smart park control platform. When the microgrid is applied to the smart park, the microgrid control system is installed on the smart park control platform. While realizing power support and regulation in the smart park, improving the efficiency of the smart park's application of new energy power, and ensuring the power stability of the smart park, it can also effectively display and interact with the relevant data of its power management and regulation of the smart park through the smart park control platform, thereby promoting the safety and effectiveness of power support and regulation.

[0029] Figure 1 - Fig. 9It is shown that when a microgrid control system based on new energy applications is applied in a smart park, the smart park control platform inputs relevant data such as the load data of the smart park, the load peak and valley time range, the smart park area meteorological data, the smart park area power supply status data, the maximum charge and discharge cycle data of the power storage device 1 and the power storage backup device 11, and the power storage parameters of the power storage device 1 and the power storage backup device 11 into the microgrid control processing unit through the control instruction optimization unit. The microgrid control processing unit processes and applies the received data. At the same time, the new energy power collection unit collects the data from the new energy power end, converts it and transmits it to the microgrid control processing unit. The load end of the park transmits the real-time load data to the microgrid control processing unit through the load data collection unit. The unit performs calculations and analysis based on the acquired data. When it is determined that the new energy power can support the operation of the park load, the intelligent power switching cabinet is controlled by the on-grid and off-grid control unit to exchange and control the power circuit of the smart park, so that the new energy power end can provide power support for the load of the smart park. When the microgrid control processing unit determines that there is surplus new energy power after supporting the park load, the power storage control unit acts on the power storage device 1 and the power storage backup device 11 to store the surplus power, and the power is preferentially stored in the power storage device 1. The power data about the power storage device 1 and the power storage backup device 11 is transmitted to the microgrid control processing unit through the power storage device power collection unit. After the power storage in the power storage device 1 is saturated, the power is transmitted to the power storage backup device 11 for storage.

[0030] When the new energy power collection unit transmits power data about the new energy power end to the microgrid control processing unit, as well as the data about the weather in the smart park area transmitted by the control instruction optimization unit, and comprehensively judges that the output power of the new energy power end cannot support the application of the park load end or cannot support the application of the park load end during peak and valley periods, the microgrid control processing unit performs discharge control on the power storage device 1 and the power storage backup device 11 through the power storage control unit, and preferentially releases the electric energy stored in the power storage device 1. After the electric energy stored in the power storage backup device 11 is released, the electric energy stored in the power storage backup device 11 is released to support the application of the park load power and ensure the application stability of the park microgrid. After all the power in the power storage device 1 and the power storage backup device 11 is released, when the microgrid control processing unit judges based on the received data that the new energy power end still cannot generate power to support the operation of the park load, the smart power switching cabinet is controlled through the on-grid and off-grid control unit, so that the microgrid in the park can be connected to the external power grid, and the external power grid can provide power support to the park load. The power storage device 1 and the power storage backup device 11 are controlled by the power storage control unit to generate power storage, and the electric energy generated by the new energy power end in this process is stored, which effectively promotes the full use of the electric energy of the new energy power end. While ensuring the stability and effectiveness of power support in the smart park, it can also improve the efficiency of the smart park in applying new energy power and reduce the power cost of the smart park. When the microgrid control processing unit judges that the power generated by the new energy power end is insufficient to support the park load according to the data transmitted by the new energy power acquisition unit and the control instruction optimization unit, and the external power grid is cut off, the microgrid control processing unit controls the discharge of the power storage device 1 and the power storage backup device 11 in sequence through the power storage control unit to promote them to support the park load. At the same time, the load control unit controls the park load, cuts off some unnecessary loads, reduces the energy loss of the smart park, and generates an emergency alarm signal through the emergency warning unit to remind the maintenance personnel of the smart park to make an emergency plan for this situation, so as to reduce the loss and panic caused by the subsequent power shortage.

[0031] During the continuous operation of the microgrid control processing unit, by coordinating the new energy power terminal, the power storage device 1, the power storage backup device 11 and the external power grid, the power support operation stability in the smart park is effectively promoted, and the efficiency of the application of new energy power is promoted, and the power cost of the smart park is reduced. In the subsequent continuous application process, the heat conduction insert 311 can directly conduct the temperature of the power storage device 1 or the power storage backup device 11, and conduct it to the heat conduction column 51 through the heat conduction bracket 31, so that the thermal deformation spiral strip 52 absorbs the heat of the power storage device 1 and the power storage backup device 11. When the temperature reaches the thermal After the deformation temperature of the deformation spiral strip 52 is reached, the thermal deformation spiral strip 52 will produce an elongated deformation, driving the thermal contact block 53 to move to the right in the power storage state collection tube 3, and causing the thermal contact block 53 to abut against the trigger sheet 331. At this time, the self-heating trigger acquisition module in the power storage device state acquisition unit receives the trigger signal of the thermal contact block 53 and transmits it to the power storage device state dual processing module. After the power storage device state dual processing module analyzes and processes the data, it transmits the overheating signal of the power storage device 1 or the power storage backup device 11 to the microgrid control processing unit through the self-heating state output module. After receiving the self-heating unidirectional trigger signal; The microgrid control processing unit determines the state of power data generated by the new energy power terminal at this time through the data transmitted by the new power source power collection unit, the power storage device power collection unit and the load data collection unit. When there is a continuous power surplus at this time, and the power storage device 1 or the power storage backup device 11 is judged to be in a power saturation state through the signal of the power storage state of the power storage device 1 or the power storage backup device 11 transmitted by the power storage device power collection unit, it is determined that the control execution abnormality occurs in the power storage control unit at this time, or the performance abnormality occurs in the power storage device 1 and the power storage backup device 11; Then, the microgrid control processing unit firstly cuts off the charging of the power storage device 1 or the power storage backup device 11 and issues a control instruction to discharge after waiting for a period of time through the abnormal forced control unit, iterates the power storage control generated by the power storage control unit, and then the microgrid control processing unit analyzes and judges the data transmitted by the subsequent power storage device power acquisition unit and the self-heating state output module. After obtaining that the power state of the subsequent power storage device 1 and the power storage backup device 11 remains constant when the charging is cut off or the power is reduced after the discharge, and the self-heating state output module stops transmitting the trigger signal, the microgrid control processing unit determines that the performance of the power storage device 1 and the power storage backup device 11 is normal at this time, and the power storage control unit has an execution abnormality. The microgrid control processing unit replaces the task execution of the power storage control unit through the abnormal forced control unit, and issues an emergency warning through The unit generates a maintenance alarm signal through an alarm to remind maintenance personnel to perform maintenance and repair on the power storage control unit in time and handle abnormal situations in time; after obtaining that the power status of the subsequent power storage device 1 and the power storage backup device 11 remains unchanged and the self-heating state output module continues to transmit a trigger signal, the microgrid control processing unit determines that the performance of the power storage device 1 and the power storage backup device 11 is abnormal at this time, and replaces the task execution of the power storage control unit through the abnormal forced control unit, and generates a maintenance alarm signal through the emergency warning unit through an alarm to remind maintenance personnel to perform maintenance and repair on the power storage device 1 and the power storage backup device 11 in time, handle abnormal situations in time, and control the temperature of the space where the power storage device 1 and the power storage backup device 11 are located, so as to ensure the safety of the subsequent maintenance process and avoid the danger caused by continuous accumulation of heat; The microgrid control processing unit determines the state of power data generated by the new energy power terminal at this time through the data transmitted by the new power source power collection unit, the power storage device power collection unit and the load data collection unit. When there is a continuous power surplus at this time, and the power storage device 1 or the power storage backup device 11 is judged to be in a non-power saturated state through the power storage state signal of the power storage device power collection unit transmitted by the power storage device power collection unit, it is determined that the power storage device power collection unit has a collection execution abnormality, or the power storage control unit has a control execution abnormality, or the power storage device 1 and the power storage backup device 11 have a performance abnormality; Then, the microgrid control processing unit first controls the power storage regulation unit to stop the charging state of the power storage device 1 and the power storage backup device 11 or to control the discharge of the power storage device 1 and the power storage backup device 11. After the subsequent self-heating state output module no longer transmits a trigger signal to the microgrid control processing unit, when the power state data transmitted by the power collection unit of the power storage device does not change much or does not change, the microgrid control processing unit determines that the performance of the power storage regulation unit and the power storage device 1 and the power storage backup device 11 is normal, and the power collection unit of the power storage device is abnormal. After the subsequent self-heating state output module continues to transmit a trigger signal to the microgrid control processing unit, the microgrid control processing unit cuts off the charging of the power storage device 1 or the power storage backup device 11 through the abnormal forced regulation unit and controls the discharge after waiting for a period of time, iterates the power storage control generated by the power storage regulation unit, and after the subsequent self-heating state output module no longer transmits a trigger signal to the microgrid control processing unit, the power storage device 1 or the power storage backup device 11 is disconnected from the charging state, and the control instruction of the discharge after waiting for a period of time is issued. When the power status data transmitted by the equipment power collection unit does not change much or does not change, the microgrid control processing unit determines that the power storage control unit and the power storage device power collection unit are both abnormal at this time, and the power storage performance of the power storage device 1 and the power storage backup device 11 is normal; after the subsequent abnormal forced control unit takes effect, the self-heating state output module still continues to transmit the trigger signal to the microgrid control processing unit, and the microgrid control processing unit determines that the power storage performance of the power storage device 1 and the power storage backup device 11 is abnormal; after determining the abnormal factor, the microgrid control processing unit replaces the task execution of the power storage control unit through the abnormal forced control unit, and generates a maintenance alarm signal through the emergency warning unit through the alarm, reminding the maintenance personnel to promptly perform maintenance and repair on the power storage device 1 and the power storage backup device 11, promptly handle the abnormal situation, and perform temperature control on the space where the power storage device 1 and the power storage backup device 11 are located, so as to ensure the safety of the subsequent maintenance process and avoid the danger caused by continuous accumulation of heat.

[0032] During the continuous operation of the microgrid control processing unit, the coordination between the new energy power terminal, the power storage device 1, the power storage backup device 11 and the external power grid can effectively promote the stability of the power support operation in the smart park, and can also promote the efficiency of the application of new energy power and reduce the power cost of the smart park. In the subsequent continuous application process, when the power storage device 1 and the power storage backup device 11 produce a discharge effect due to long-term power saturation, the wire bundle can conduct the released power to the induction electromagnetic block 41, so that the induction electromagnetic block 41 generates a discharge contact with the right end of the discharge contact block 42. The magnetism of the strong magnetic blocks connected to each other causes the discharge contact 42 to move to the left in the heat conduction bracket 31, and makes the discharge contact 42 abut against the discharge trigger sheet 332. At this time, the discharge trigger acquisition module in the power storage device state acquisition unit receives the trigger signal of the discharge contact 42 and transmits it to the power storage device state dual processing module. After the power storage device state dual processing module analyzes and processes the data, it transmits the discharge signal about the power storage device 1 or the power storage backup device 11 to the microgrid control processing unit through the discharge state output module. After receiving the unidirectional discharge trigger signal, the microgrid control processing unit; The microgrid control processing unit determines the state of power data generated by the new energy power terminal at this time through the data transmitted by the new power source power collection unit, the power storage device power collection unit and the load data collection unit. When there is a continuous power surplus at this time, and the power storage device 1 or the power storage backup device 11 is judged to be in a power saturation state through the signal of the power storage state of the power storage device 1 or the power storage backup device 11 transmitted by the power storage device power collection unit, it is determined that the control execution abnormality occurs in the power storage control unit at this time, or the performance abnormality occurs in the power storage device 1 and the power storage backup device 11; The microgrid control processing unit determines the state of power data generated by the new energy power terminal at this time through the data transmitted by the new power source power collection unit, the power storage device power collection unit and the load data collection unit. When there is a continuous power surplus at this time, and the power storage device 1 or the power storage backup device 11 is judged to be in a non-power saturated state through the power storage state signal of the power storage device power collection unit transmitted by the power storage device power collection unit, it is determined that the power storage device power collection unit has a collection execution abnormality, or the power storage control unit has a control execution abnormality, or the power storage device 1 and the power storage backup device 11 have a performance abnormality; When the above-mentioned self-heating triggers a unidirectional signal, the microgrid control processing unit cooperates with the abnormal forced control unit to realize the investigation and warning of abnormal data, and can self-check and verify the abnormality when a unidirectional abnormal trigger occurs, thereby ensuring the operation stability of the microgrid in the smart park and the effectiveness of power support. At the same time, it can also promote the maintenance personnel's response and processing efficiency to the abnormality through early warning and alarm, fully improve the robustness of the microgrid control system, promote the protection of the application of the power storage device 1 and the power storage backup device 11, and promote its effectiveness and safety in the microgrid.

[0033] During the continuous operation of the microgrid control processing unit, by coordinating the new energy power terminal, the power storage device 1, the power storage backup device 11 and the external power grid, the power support operation stability in the smart park is effectively promoted, and the efficiency of the application of new energy power is promoted, and the power cost of the smart park is reduced. In the subsequent continuous application process, the thermal deformation spiral strip 52 is elongated and deformed due to the temperature conduction of the heat conduction column 51, so that the thermal contact block 53 is abutted against the trigger sheet 331. At the same time, the induction electromagnetic block 41 generates a magnetic force that repels the strong magnetic block embedded in the right end of the discharge contact block 42 under the power conduction of the wire bundle, so that the discharge contact block 42 is abutted against the discharge trigger sheet 332. The discharge trigger acquisition module and the self-heating trigger acquisition module in the power storage device status acquisition unit simultaneously transmit trigger signals to the power storage device status dual processing module, so that the power storage device status dual processing module transmits a bidirectional abnormal trigger signal to the microgrid control processing unit through the discharge state output module and the self-heating state output module. The microgrid control unit receives the trigger signal. After receiving the trigger signal of the bidirectional abnormality, first determine whether the new energy power support is sufficient. When it is determined that the new energy power is insufficient, the external power grid is connected through the function of the on-grid and off-grid control unit and the function of the intelligent power exchange cabinet, and then a high-level alarm signal is generated through the emergency warning unit to prompt the maintenance personnel to check and maintain the power storage device 1, the power storage backup device 11 and each unit of the microgrid control system at this time, and control the temperature in the space where the power storage device 1 and the power storage backup device 11 are set, and the temperature of the power storage device 1 and the power storage backup device 11 is guaranteed to avoid the danger caused by continuous overheating; when the new energy power is sufficient, maintain the power support of the new energy power end, and then generate a high-level alarm signal through the emergency warning unit to prompt the maintenance personnel to check and maintain the power storage device 1, the power storage backup device 11 and each unit of the microgrid control system at this time, and control the temperature in the space where the power storage device 1 and the power storage backup device 11 are set, and the temperature of the power storage device 1 and the power storage backup device 11 is guaranteed to avoid the danger caused by continuous overheating. Furthermore, through the form of bidirectional triggering, the abnormal status of the power storage device 1 and the power storage backup device 11 is judged, which can not only promote the efficiency of abnormal investigation and abnormal response, but also effectively promote the intelligence level of the microgrid control system and promote its functionality.

[0034] Second implementation method: Figure 1 - Fig.11 The microgrid control system based on the application of new energy is shown. The right end of the heat conduction column 51 and the left end of the heat contact block 53 are fixedly connected with the initial thermal deformation guide rod 54, and the thermal deformation spiral strip 52 is sleeved on the outside of the initial thermal deformation guide rod 54. The input end of the dual processing module of the power storage device state is also connected to the self-heating initial state acquisition module. The input end of the self-heating initial state acquisition module is connected with the signal of the initial thermal deformation guide rod 54. The cooperation between the self-heating initial state acquisition module and the initial thermal deformation guide rod 54 can more accurately feedback the state data of the power storage device 1 and the power storage backup device 11, further promote the timeliness of the state display, and can display and feedback the state of the power storage device 1 and the power storage backup device 11 at the initial stage of abnormal execution, further promote the efficiency of early warning and alarm, promote the efficiency of response processing, and ensure the safety of the subsequent power storage device 1 and the power storage backup device 11 during continuous application.

[0035] Figure 1 - Fig.11 It is shown that the left end of the induction electromagnetic block 41 and the right end of the discharge contact block 42 are fixedly connected with the initial discharge guide rod 43, and the reset contraction spring 44 is sleeved on the outside of the initial discharge guide rod 43. The input end of the dual processing module of the power storage device state is also connected to the discharge initial state acquisition module. The input end of the discharge initial state acquisition module is connected to the signal of the initial discharge guide rod 43. The cooperation of the discharge initial state acquisition module and the initial discharge guide rod 43 can effectively promote the accuracy of the discharge data collection of the power storage device 1 and the power storage backup device 11, and further promote the accuracy of the instruction execution verification of the power storage device 1 and the power storage backup device 11, so as to reduce the performance damage of the power storage device 1 and the power storage backup device 11, and promote the durability of the power storage device 1 and the power storage backup device 11; and the cooperation of the self-heating initial state acquisition module, the discharge initial state acquisition module, the self-heating trigger acquisition module and the discharge trigger acquisition module can effectively realize the multi-level display of abnormalities and promote the effectiveness of abnormal processing.

[0036] Figure 1 - Fig.11It is shown that during the continuous operation of the microgrid control processing unit, the coordination between the new energy power terminal, the power storage device 1 and the power storage backup device 11 and the external power grid can effectively promote the stability of the power support operation in the smart park, and can also promote the efficiency of the application of new energy power and reduce the power cost of the smart park. In the subsequent continuous application process, the heat conduction insert 311 can directly conduct the temperature of the power storage device 1 or the power storage backup device 11, and conduct it to the heat conduction column 51 through the heat conduction bracket 31, so that the thermal deformation spiral strip 52 conducts the power storage device 1 and the power storage backup device 11 directly. The heat of the heat storage device 11 is absorbed. When the temperature reaches the deformation temperature of the heat deformation spiral strip 52, the heat deformation spiral strip 52 will be elongated and deformed, driving the thermal contact block 53 to move to the right in the power storage state collection tube 3. At this time, the two initial heat deformation guide rods 54 are separated, and the thermal contact block 53 does not abut against the trigger sheet 331. The disconnection signal of the initial heat deformation guide rod 54 is transmitted to the power storage device state dual processing module through the self-heating initial state collection module, so that the power storage device state dual processing module transmits a unidirectional self-heating initial abnormality signal to the microgrid control processing unit through the self-heating state output module; Or when the power storage device 1 and the power storage backup device 11 produce a discharge effect due to long-term power saturation, the wire bundle can conduct the released power to the induction electromagnetic block 41, so that the induction electromagnetic block 41 generates a magnetic force that repels the strong magnetic block embedded at the right end of the discharge contact block 42, prompting the discharge contact block 42 to automatically move to the left in the heat conduction bracket 31, so that the two initial discharge guide rods 43 are separated, and the discharge contact block 42 does not abut against the discharge trigger sheet 332, and the disconnection signal of the initial discharge guide rod 43 will be transmitted to the power storage device state dual processing module through the discharge initial state acquisition module, so that the power storage device state dual processing module transmits the signal of the initial abnormality of unidirectional discharge to the microgrid control processing unit through the discharge state output module; After receiving the signal of the initial abnormality of unidirectional self-heating or the signal of the initial abnormality of unidirectional discharge, the microgrid control processing unit cooperates with the abnormal forced control unit when the self-heating triggers the unidirectional signal as disclosed in the first embodiment, so as to realize the investigation and warning of abnormal data, and generate a first-level maintenance alarm signal through the alarm; thereby effectively improving the accuracy and effectiveness of status monitoring of the power storage device 1 and the power storage backup device 11.

[0037] And when the microgrid control processing unit receives the discharge initial state trigger signal and the self-heating trigger signal, or when it receives the self-heating initial state trigger signal and the discharge trigger signal, or when it receives the discharge initial state trigger signal and the self-heating initial state trigger signal, through the cooperation of the microgrid control processing unit and the abnormal forced control unit for the self-heating trigger unidirectional signal disclosed in the first embodiment, the abnormal data is checked and warned, and a secondary maintenance alarm signal is generated through the alarm. While promoting the stability of microgrid operation, it effectively guarantees the effectiveness of status monitoring and warning level classification, and promotes maintenance personnel to take appropriate and effective emergency measures.

[0038] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A microgrid control system based on new energy application, characterized in that: The invention comprises two protection boxes (2), power storage devices (1) and power storage backup devices (11) respectively placed in the two protection boxes (2), and microgrid control processing units respectively matched with the power storage devices (1) and the power storage backup devices (11); the front and rear ends of the two protection boxes (2) are fixedly connected with power storage state collection cylinders (3); a self-heating state sensing component (5) is arranged on the left side of the power storage state collection cylinder (3); and a discharge state sensing component (4) is arranged on the right side of the power storage state collection cylinder (3); The input end of the microgrid control processing unit is connected to a power storage device state acquisition unit, and the output end of the microgrid control processing unit is connected to a power storage control unit and an abnormal forced control unit; The power storage device state acquisition unit includes a power storage device state dual processing module, the input end of the power storage device state dual processing module is connected to a discharge trigger acquisition module and a self-heating trigger acquisition module, and the output end of the power storage device state dual processing module is connected to a discharge state output module and a self-heating state output module; The input end of the discharge trigger acquisition module is signal-connected to the discharge state sensing component (4), the input end of the self-heating trigger acquisition module is signal-connected to the self-heating state sensing component (5), and the output ends of the discharge state output module and the self-heating state output module are both signal-connected to the microgrid control processing unit; The output ends of the power storage control unit and the abnormal forced control unit are respectively connected to the power storage device (1) and the power storage backup device (11) by signals, and the command priority of the abnormal forced control unit is higher than the command priority of the power storage control unit.

2. A microgrid control system based on new energy application according to claim 1, characterized in that: A bidirectional isolation column (33) is fixedly connected to the middle of the storage state collection tube (3); a trigger piece (331) matching the self-heating state sensing component (5) is fixedly connected to the left end of the bidirectional isolation column (33); and a discharge trigger piece (332) matching the discharge state sensing component (4) is fixedly connected to the right end of the bidirectional isolation column (33).

3. A microgrid control system based on new energy application according to claim 2, characterized in that: The self-heating state sensing component (5) comprises a heat conduction column (51) fixedly arranged on the left inner wall of the power storage state collection tube (3); the right end of the heat conduction column (51) is fixedly connected to a heat deformation spiral strip (52); the right end of the heat deformation spiral strip (52) is fixedly connected to a heat contact block (53) that is slidably matched with the inner wall of the power storage state collection tube (3); the heat contact block (53) is matched with the trigger sheet (331); and the input end of the self-heating trigger collection module is signal-connected to the heat contact block (53).

4. A microgrid control system based on new energy application according to claim 3, characterized in that: The right end of the heat conduction column (51) and the left end of the heat contact block (53) are both fixedly connected to an initial thermal deformation guide rod (54), and the thermal deformation spiral strip (52) is sleeved on the outside of the initial thermal deformation guide rod (54). The input end of the power storage device state dual processing module is also connected to a self-heating initial state acquisition module, and the input end of the self-heating initial state acquisition module is connected to the initial thermal deformation guide rod (54) signal.

5. A microgrid control system based on new energy application according to claim 3, characterized in that: The left end of the power storage state collection tube (3) is fixedly connected to a heat conduction bracket (31), the rear end of the heat conduction bracket (31) extends into the protection box (2) and is fixedly connected to a heat conduction insert (311), the heat conduction insert (311) abuts against the power storage device (1) and the power storage backup device (11) that are matched with it, and the front end of the heat conduction bracket (31) extends into the power storage state collection tube (3) and abuts against the heat conduction column (51).

6. A microgrid control system based on new energy application according to claim 2, characterized in that: The discharge state sensing component (4) comprises an induction electromagnetic block (41) fixedly arranged on the right inner wall of the power storage state collection tube (3); the left end of the induction electromagnetic block (41) is fixedly connected to a reset contraction spring (44); the left end of the reset contraction spring (44) is fixedly connected to a discharge contact block (42) that is slidably matched with the inner wall of the power storage state collection tube (3); the discharge contact block (42) is matched with a discharge trigger sheet (332); the right end of the discharge contact block (42) is embedded with a strong magnetic block that is matched with the induction electromagnetic block (41); and the input end of the discharge trigger collection module is signal-connected to the discharge contact block (42).

7. A microgrid control system based on new energy application according to claim 6, characterized in that: The left end of the induction electromagnetic block (41) and the right end of the discharge contact block (42) are both fixedly connected to an initial discharge guide rod (43), and a reset contraction spring (44) is sleeved on the outside of the initial discharge guide rod (43). The input end of the electric storage device state dual processing module is also connected to a discharge initial state acquisition module, and the input end of the discharge initial state acquisition module is signal-connected to the initial discharge guide rod (43).

8. A microgrid control system based on new energy application according to claim 6, characterized in that: The right end of the power storage state collection tube (3) is fixedly connected to a wire harness guide tube (32), the rear end of the wire harness guide tube (32) extends into the protection box (2), the front end of the wire harness guide tube (32) extends into the power storage state collection tube (3) and cooperates with the discharge state sensing component (4), the wire harness guide tube (32) is provided with a wire harness electrically connected to the power storage device (1) and the power storage backup device (11) respectively corresponding thereto, and the front end of the wire harness is electrically connected to the induction electromagnetic block (41) through the wire harness guide tube (32).

9. A microgrid control system based on new energy application according to claim 1, characterized in that: The input end of the microgrid control processing unit is also connected to a new energy power collection unit, a power storage device power collection unit, a load data collection unit and a control instruction optimization unit, and the output end of the microgrid control processing unit is also connected to a load control unit, an on-grid and off-grid control unit and an emergency warning unit; The input end of the new energy power acquisition unit is connected to the new energy power end signal, the input end of the power storage device power acquisition unit is connected to the power storage device (1) and the power storage backup device (11) signal respectively, the input end of the load data acquisition unit is connected to the park load end signal, and the input end of the control instruction optimization unit is connected to the smart park control platform signal; The output end of the load control unit is connected to the park load end signal, the output end of the grid-connected and off-grid control unit is connected to the intelligent power switching cabinet signal, and the output end of the emergency warning unit is connected to the alarm signal set on the smart park control platform.

Images