Method and device for regulating load of local power grid, electronic equipment and storage medium

Abstract

The application provides a local power grid load regulation method and device, electronic equipment and storage medium, relates to the power engineering technical field, and mainly technical schemes include: based on the local power grid stability control system and strategy, setting the first adjustment function for the main station of the stability control system; based on the first adjustment function, sending the control command from the decision center to the substation of the stability control system; based on the added communication board card, setting the second adjustment function for the substation of the stability control system; based on the second adjustment function, sending the control command to the preset slave programmable logic controller through the preset master programmable logic controller; based on the preset slave programmable logic controller receiving the control command, adjusting the electrolytic aluminum load. Compared with the related art, based on the control command received by the main station of the stability control system, the electrolytic aluminum load is adjusted through the preset slave programmable logic controller, so that the adjustment of the local power grid load is realized, and the system safety and stability of the local power grid are improved.

Description

Technical Field

[0001] This application relates to the field of power engineering technology, and in particular to a method, device, electronic equipment and storage medium for regulating local power grid load. Background Technology

[0002] New energy power generation is gradually becoming the trend of power development. Through the research and use of various new technologies, the capacity of new energy power generation is gradually expanding and it occupies an increasingly larger proportion in the power grid system. This is very beneficial for alleviating energy shortages and eliminating ecological pollution.

[0003] With the increasing proportion of installed capacity from new energy sources, profound changes have occurred in the power supply and grid structure. New energy power generation lacks the rotational inertia characteristics of conventional power sources, making it susceptible to resource and environmental influences, prone to random fluctuations, difficult to predict, and significantly impacting grid operation. Furthermore, the reactive power regulation capabilities of new energy sources are not fully utilized, and large power fluctuations easily cause voltage fluctuations. Fluctuations in new energy power generation also make active power regulation of the grid more difficult. In local power grids, this manifests primarily as follows: as the proportion of new energy connected to the grid increases, thermal power units face new operating conditions (such as frequent ramp-up and low-load operation), which have an increasingly significant impact on system costs. After being impacted, the system experiences accelerated frequency changes, drastic voltage fluctuations, and prominent broadband oscillations, which conventional "repair" measures are insufficient to fundamentally resolve. Summary of the Invention

[0004] In view of this, this application provides a method, device, electronic equipment and storage medium for regulating local power grid load, so as to realize the power system's control requirements for new energy, improve the grid-friendliness of new energy power plants and bases, realize intelligent interaction between source, grid, load and storage, and achieve optimized resource allocation, improve the system's safety and stability level and new energy absorption capacity, and improve energy utilization efficiency.

[0005] According to a first aspect of this disclosure, a method for regulating local power grid load is provided, wherein the method is applied to the electrolytic aluminum side, comprising:

[0006] Based on the local power grid stability control system and strategy, the first regulation function is set for the main station of the stability control system.

[0007] Based on the first adjustment function, control commands from the decision-making center are sent to the stability control system substation;

[0008] Based on the addition of a communication board, a second adjustment function is set for the substation of the stability control system;

[0009] Based on the second adjustment function, the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller;

[0010] The load on the electrolytic aluminum is adjusted based on the control commands received from the programmable logic controller according to the preset parameters.

[0011] Optionally, before sending the control command to the preset slave programmable logic controller via the preset master programmable logic controller based on the second adjustment function, the method further includes:

[0012] If the control command sent from the main station of the stability control system to the substation of the stability control system is a non-load shedding command, then the substation of the stability control system will directly forward the control command.

[0013] If the control command sent from the master station of the stability control system to the substation of the stability control system is a load shedding command, then the substation of the stability control system will compare the load shedding command with the local frequency and determine the validity of the load shedding command;

[0014] If the local frequency preset threshold and preset change rate are met, then the load shedding command is determined to be valid;

[0015] If the local frequency preset threshold and preset change rate are not met, the load shedding command is determined to be invalid.

[0016] Optionally, the step of sending the control command to a preset slave programmable logic controller via a preset master programmable logic controller based on the second adjustment function includes:

[0017] The control command is converted into an analog signal based on the stability control system substation;

[0018] The analog signal is received by the preset main programmable logic controller;

[0019] The analog signal is distributed to the preset slave programmable logic controller based on the preset master programmable logic controller.

[0020] Optionally, adjusting the electrolytic aluminum load based on receiving the control command from the programmable logic controller based on a preset value includes:

[0021] Based on the current value of the rectifier unit, the impedance of the saturated reactor is dynamically adjusted from the programmable logic controller.

[0022] Adjusting the load on the electrolytic aluminum system based on the adjustment of the saturated reactor.

[0023] Optionally, the method further includes:

[0024] A fast frequency response control function is set for the main station and the substation of the stability control system, and the main station and the substation of the stability control system are connected to at least one power control system;

[0025] A preset hierarchical control range is set for the at least one power control system, and commands issued by the at least one power control system are monitored;

[0026] According to a second aspect of this disclosure, the control method, applied to a local power grid side, further includes:

[0027] Based on the frequency deviation feedback introduced by the local power grid, the frequency change of the local power grid is monitored in milliseconds.

[0028] Based on the frequency changes of the local power grid, the decision-making center sends control commands for electrolytic aluminum load regulation to the main station of the stability control system.

[0029] During steady-state operation, the control functions of the main station and substation of the stability control system are automatically reduced, enabling the thermal power unit to perform primary frequency regulation.

[0030] According to a third aspect of this disclosure, a local power grid load control device is provided, the device comprising, on the electrolytic aluminum side:

[0031] The first setting unit is used to set the first adjustment function for the main station of the stability control system based on the local power grid stability control system and strategy.

[0032] The first sending unit is used to send control commands from the decision-making center to the stability control system substation based on the first adjustment function;

[0033] The second setting unit is used to set a second adjustment function for the stability control system substation based on the addition of a communication board.

[0034] The second sending unit is used to send the control command to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjustment function.

[0035] The adjustment unit is used to adjust the electrolytic aluminum load based on the control command received from the programmable logic controller based on a preset value.

[0036] Optionally, the device further includes:

[0037] The forwarding unit, when the control command sent from the main station of the stability control system to the substation of the stability control system is a non-load shedding command, the substation of the stability control system directly forwards the control command;

[0038] The judgment unit determines the validity of the load shedding command by comparing it with the local frequency when the control command sent from the main station of the stability control system to the substation of the stability control system.

[0039] The determining unit determines that the load shedding command is valid when the local frequency preset threshold and preset change rate are met; and determines that the load shedding command is invalid when the local frequency preset threshold and preset change rate are not met.

[0040] Optionally, the second transmitting unit includes:

[0041] The conversion module is used to convert the control commands into analog signals based on the stability control system substation;

[0042] The receiving module is used to receive the analog signal based on the preset main programmable logic controller;

[0043] The distribution module is used to distribute the analog signal to a preset slave programmable logic controller based on the preset master programmable logic controller.

[0044] Optionally, the adjustment unit includes:

[0045] The adjustment module is used to dynamically adjust the impedance of the saturated reactor based on the current value of the rectifier unit from the programmable logic controller.

[0046] The adjustment module is used to adjust the electrolytic aluminum load based on the adjustment of the saturated reactor.

[0047] Optionally, the device further includes:

[0048] The third setting unit is used to set a fast frequency response control function for the main station and the substation of the stability control system, and to connect the main station and the substation of the stability control system to at least one power control system.

[0049] A setting unit is used to set a preset hierarchical control range for the at least one power control system and to monitor the commands issued by the at least one power control system;

[0050] According to a fourth aspect of this disclosure, a local power grid load control device is provided, the control device being applied to the local power grid side, and further comprising:

[0051] The monitoring unit is used to monitor the frequency changes of the local power grid in milliseconds based on the frequency deviation feedback amount introduced by the local power grid.

[0052] The transmitting unit is used to send control commands for electrolytic aluminum load regulation from the decision-making center to the main station of the stability control system based on changes in the local power grid frequency.

[0053] The weakening unit is used to automatically reduce the control effect of the main station and the substation of the stability control system during the steady-state process, so that the thermal power unit can perform the primary frequency regulation function.

[0054] According to a fifth aspect of this disclosure, an electronic device is provided, comprising:

[0055] At least one processor; and

[0056] A memory communicatively connected to the at least one processor; wherein,

[0057] The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect above.

[0058] According to a sixth aspect of this disclosure, a non-transitory computer-readable storage medium is provided storing computer instructions, wherein the computer instructions are configured to cause the computer to perform the method described in the first aspect above.

[0059] According to a seventh aspect of this disclosure, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0060] Compared with the prior art, this application has the following advantages:

[0061] The method, apparatus, electronic device, and storage medium for regulating local power grid load disclosed herein are based on a local power grid stability control system and strategy. A first regulation function is set up for the main station of the stability control system. Based on the first regulation function, control commands from the decision-making central station are sent to the substations of the stability control system. A second regulation function is set up for the substations of the stability control system by adding a communication board. Based on the second regulation function, the control commands are sent to a preset slave programmable logic controller (PLC) via a preset master PLC. The electrolytic aluminum load is regulated based on the control commands received by the preset slave PLC. Compared with related technologies, this method regulates the local power grid load by adjusting the electrolytic aluminum load through a preset slave PLC based on the control commands received by the main station of the stability control system, thereby improving the system security and stability of the local power grid.

[0062] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0063] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure, wherein:

[0064] Figure 1 This is a schematic flowchart of a local power grid load control method provided in an embodiment of the present disclosure, the method being applied to the electrolytic aluminum side;

[0065] Figure 2 This disclosure provides a schematic diagram of the control circuit network topology from the master station to the terminal station of a stability control system.

[0066] Figure 3 A schematic diagram of a hierarchical network structure for a general control circuit provided in this embodiment of the present disclosure;

[0067] Figure 4A A simplified control circuit topology for electrolytic aluminum is provided in this embodiment of the present disclosure;

[0068] Figure 4B A schematic diagram of the topology combining the working circuit and control circuit of a battery energy storage system provided in this embodiment of the present disclosure;

[0069] Figure 5 A schematic diagram illustrating the criteria for determining the validity of a load shedding command, provided in an embodiment of this disclosure;

[0070] Figure 6 This is a schematic diagram of an electrolytic aluminum working circuit provided in an embodiment of the present disclosure;

[0071] Figure 7 A schematic diagram of a local power grid circuit structure is provided in an embodiment of this disclosure;

[0072] Figure 8 A schematic flowchart of another local power grid load control method provided in this embodiment of the present disclosure;

[0073] Figure 9 A schematic diagram of the structure of a control device for a local power grid load on the electrolytic aluminum side, provided in an embodiment of this disclosure;

[0074] Figure 10 A schematic diagram of another control device for local power grid load on the electrolytic aluminum side, provided in an embodiment of this disclosure;

[0075] Figure 11 A schematic diagram of the structure of a control device for a local power grid load on the local power grid side, provided in an embodiment of this disclosure;

[0076] Figure 12 A schematic block diagram of an example electronic device 500 that can be used to implement embodiments of the present disclosure is shown. Detailed Implementation

[0077] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific implementation details. The described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Similarly, for clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0078] The following description, with reference to the accompanying drawings, outlines a method, apparatus, electronic device, and storage medium for regulating local power grid loads according to embodiments of the present disclosure.

[0079] Figure 1 This is a schematic flowchart of a local power grid load control method provided in an embodiment of the present disclosure, which is applied to the electrolytic aluminum side.

[0080] Step 101: Based on the local power grid stability control system and strategy, set the first regulation function for the main station of the stability control system.

[0081] The stability control system is a large-scale control system composed of control and monitoring equipment of a local power grid. The main station of the stability control system is a master node of the stability control system. The first control function is a control service configured based on the stability control system.

[0082] In order to enable the forwarding of control commands from the decision-making center, a first regulation function is added to the main station of the stability control system based on the current local power grid stability control system.

[0083] Step 102: Based on the first adjustment function, send a control command from the decision-making center to the stability control system substation.

[0084] In order to forward the control command to the target terminal station, the control command is forwarded by the stability control system master station to the stability control system substation.

[0085] The stability control system substation is a subordinate station of the stability control system master station and receives control commands from the stability control system master station.

[0086] Step 103: Based on the addition of a communication board, a second adjustment function is set for the stability control system substation.

[0087] To expand the operational performance of the stability control system substation and enable it to forward control commands, a second adjustment function is configured for the substation, namely, modifying the stability control strategy. A 4-20mA communication board is added to the substation to achieve digital-to-analog signal conversion.

[0088] Step 104: Based on the second adjustment function, the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller.

[0089] To further forward control commands, the stability control system substation forwards the control commands, converted into analog signals, to a preset master programmable logic controller (PLC). The preset master PLC then forwards the control commands to a preset slave PLC, which can control the switching of the circuit.

[0090] Step 105: Adjust the electrolytic aluminum load based on the control command received from the programmable logic controller according to the preset parameters.

[0091] In order to execute control commands, the preset programmable logic controller adjusts the impedance of the saturated reactor based on the magnitude of the local rectifier unit current, thereby realizing the power regulation of electrolytic aluminum.

[0092] The local power grid load regulation method disclosed herein, based on a local power grid stability control system and strategy, includes: setting a first regulation function for the main station of the stability control system; sending control commands from the decision-making center to the substations of the stability control system based on the first regulation function; setting a second regulation function for the substations of the stability control system based on the addition of a communication board; sending the control commands to a preset slave programmable logic controller (PLC) through a preset master PLC based on the second regulation function; and regulating the electrolytic aluminum load based on the control commands received by the preset slave PLC. Compared with related technologies, this method regulates the local power grid load by adjusting the electrolytic aluminum load through a preset slave PLC based on the control commands received by the main station of the stability control system, thereby improving the system security and stability of the local power grid.

[0093] To more clearly demonstrate the network topology from the main station to the terminal stations of the stability control system, Figure 2 This disclosure provides a schematic diagram of the control circuit network topology from the master station to the terminal station of a stability control system. For example... Figure 2 As shown, the main station of the stability control system is connected to the substation of the stability control system, the substation of the stability control system is connected to the preset master programmable logic controller, the preset master programmable logic controller is connected to the switch ring network, the switch ring network is connected to the preset slave programmable logic controller, and the preset slave programmable logic controller is connected to the rectifier diode.

[0094] For ease of display Figure 2 The hierarchical structure of the overall control circuit corresponding to the control circuit network shown is illustrated. Figure 3 This is a schematic diagram of a hierarchical network structure for a general control circuit provided in an embodiment of this disclosure, as shown below. Figure 3 As shown, it is divided into the main station layer, the sub-station layer, and the terminal layer.

[0095] To facilitate understanding of the topology of electrolytic aluminum control circuits and the topology combining the working circuit and control circuit of battery energy storage systems, Figure 4A This disclosure provides a simplified control circuit topology for electrolytic aluminum. Figure 4B This disclosure provides a schematic diagram of a topology combining the working circuit and control circuit of a battery energy storage system, as shown in the embodiment. Figure 4B As shown, this includes two parts: a simplified control circuit topology for electrolytic aluminum and a topology that combines the working circuit and control circuit of the battery energy storage system. Based on conventional AGC, AVC, and power control system strategies, the electrolytic aluminum and battery energy storage systems are combined to jointly regulate the local power grid load.

[0096] As a refinement of the embodiments of this disclosure, before executing the control command based on the second adjustment function in step 104 and sending the control command to the preset slave programmable logic controller through the preset master programmable logic controller, the following implementation methods can be adopted, but are not limited to: if the control command sent by the master station of the stability control system to the slave station of the stability control system is a non-load shedding command, then the slave station of the stability control system directly forwards the control command; if the control command sent by the master station of the stability control system to the slave station of the stability control system is a load shedding command, then the slave station of the stability control system compares the load shedding command with the local frequency and determines the validity of the load shedding command; if the preset threshold and preset change rate of the local frequency are met, then the load shedding command is determined to be valid; if the preset threshold and preset change rate of the local frequency are not met, then the load shedding command is determined to be invalid.

[0097] To explain in detail the criteria for determining the validity of load shedding commands and to achieve stable control of the local power grid, Figure 5 Figure 4 shows a schematic diagram illustrating the determination criteria for the validity of a load shedding command, as provided in an embodiment of this disclosure:

[0098] K2 is a coefficient; d(f / t)bs is the low-frequency slip blocking value of the load shedding command from the central decision-making station; F1 is the low-frequency confirmation frequency of the load shedding command from the central decision-making station; Tn is the low-frequency confirmation delay of the load shedding command from the central decision-making station. If the positive-sequence voltage U is lower than a fixed value, the frequency slip -df / dt is greater than or equal to the low-frequency slip blocking value d(f / t)bs of the load shedding command from the central decision-making station, and the frequency f is less than 35Hz or greater than 65Hz, and at least one of the above conditions is met, and the frequency f is less than the low-frequency confirmation frequency of the load shedding command from the central decision-making station, and the duration of F1 meets the low-frequency confirmation delay of the load shedding command from the central decision-making station, then the low-frequency auxiliary operation is satisfied, thus satisfying the remote shedding action conditions and initiating remote shedding.

[0099] As a refinement of the above embodiments, when the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller via the second adjustment function in step 104, the following implementation methods can be adopted, but are not limited to: converting the control command into an analog signal based on the stability control system substation; receiving the analog signal based on the preset master programmable logic controller; and distributing the analog signal to the preset slave programmable logic controller based on the preset master programmable logic controller.

[0100] As a refinement of the above embodiments, when adjusting the electrolytic aluminum load based on the control command received from the programmable logic controller in step 105, the following implementation methods can be adopted, but are not limited to: dynamically adjusting the impedance of the saturated reactor from the programmable logic controller according to the current value of the rectifier unit; and adjusting the electrolytic aluminum load based on the adjustment of the saturated reactor.

[0101] To explain in detail the methods involved in adjusting the load of electrolytic aluminum, this disclosure first describes the electrolytic aluminum, for example: the electrolytic aluminum load rectification is diode rectification. The diode rectification consists of a voltage regulating transformer (saturated reactor), a rectifier transformer, a thyristor rectifier, and an electrolytic cell. Under the same power, if the current and voltage of the electrolytic cell are low, the current will be very large, typically several hundred kA. The rectified power can be changed by altering the rectified voltage through the rectifier transformer or by changing the rectifier firing angle. If the diode rectifier is an uncontrolled diode, a saturated reactor is added: in this case, the thyristor rectifier is responsible for fine-tuning, and the voltage regulating transformer is responsible for coarse-tuning. The voltage regulating transformer has 60-100 on-load tap changer switches, with each adjustment time typically around 10 seconds, allowing for significant power (current) adjustments; the thyristor-controlled saturated reactor uses a silicon controlled rectifier (SCR) to control the excitation current, with a power adjustment range of 5-10% and a response time typically of 1-2 seconds.

[0102] To facilitate understanding of the above description, Figure 6 This is a schematic diagram of an electrolytic aluminum working circuit provided in an embodiment of the present disclosure, such as... Figure 6 As shown, it includes: a voltage regulating transformer, a rectifier transformer, a thyristor rectifier, and an electrolytic cell.

[0103] To facilitate understanding of the local power grid structure, Figure 7 A schematic diagram of a local area power grid circuit structure is provided in an embodiment of this disclosure, such as... Figure 7 As shown.

[0104] As a refinement of the above embodiments, the method further includes, but is not limited to, the following implementation methods, for example: setting a fast frequency response control function for the main station and the substation of the stability control system, and connecting the main station and the substation of the stability control system to at least one power control system; setting a preset hierarchical control range for the at least one power control system, and monitoring the commands issued by the at least one power control system.

[0105] This disclosed embodiment integrates fast frequency response control, accesses conventional AGC, AVC, power control and other system strategies, sets hierarchical control ranges, monitors commands issued by AGC, AVC, power control and other systems, and intervenes and adjusts in a timely manner according to the set strategies. This achieves rapid coordinated control of the frequency across multiple time scales, optimizes the status of new energy sources and improves the overall economic efficiency of operation while meeting the needs of the local power grid.

[0106] Corresponding to the method for regulating the local power grid load on the electrolytic aluminum side, this application embodiment also provides a gesture recognition method, which is applied to the local power grid side. Figure 8 This is a schematic flowchart of another local power grid load control method provided in an embodiment of the present disclosure, which is applied to the local power grid side.

[0107] like Figure 7 As shown, the method includes the following steps:

[0108] Step 201: Based on the frequency deviation feedback introduced by the local power grid, monitor the frequency change of the local power grid in milliseconds.

[0109] To achieve millisecond-level monitoring of the local power grid, a frequency deviation feedback mechanism was introduced into the WAMS system based on the electrolytic aluminum load function controlled by a saturated reactor. This enables rapid closed-loop regulation of the electrolytic aluminum load voltage and the saturated reactor current stabilization system. By adjusting the saturated reactor of the electrolytic aluminum load, 5% of the rated power of the electrolytic aluminum load can be adjusted within 2 seconds, with a maximum adjustment capacity of 8.8% and an adjustment time of 5 seconds. When power disturbances such as wind power ramp-up or unit tripping occur, the frequency change is rapidly detected through millisecond-level data from the WAMS system, allowing for quick adjustment of the active power of the electrolytic aluminum load.

[0110] Step 202: Based on the local power grid frequency change, the decision-making center sends a control command for electrolytic aluminum load regulation to the main station of the stability control system.

[0111] Step 203: During the steady-state process, the control effects of the main station and substation of the stability control system are automatically reduced, so that the thermal power unit can perform the primary frequency regulation function.

[0112] To achieve automatic reduction of the control functions of the main station and substations of the stability control system, this disclosure provides a possible implementation method: based on the WAMS system, effective power support is provided during transient processes to prevent significant frequency drops, and the control function of the real-time control system is automatically reduced during steady-state processes to fully utilize the primary frequency regulation capability of the thermal power unit. This allows for coordinated operation with the primary frequency regulation of the thermal power unit to jointly maintain the stable operation of the system and significantly improve the frequency response characteristics of the isolated power grid.

[0113] The local power grid load regulation method disclosed herein, based on a local power grid stability control system and strategy, includes: setting a first regulation function for the main station of the stability control system; sending control commands from the decision-making center to the substations of the stability control system based on the first regulation function; setting a second regulation function for the substations of the stability control system based on the addition of a communication board; sending the control commands to a preset slave programmable logic controller (PLC) through a preset master PLC based on the second regulation function; and regulating the electrolytic aluminum load based on the control commands received by the preset slave PLC. Compared with related technologies, this method regulates the local power grid load by adjusting the electrolytic aluminum load through a preset slave PLC based on the control commands received by the main station of the stability control system, thereby improving the system security and stability of the local power grid.

[0114] In summary, the embodiments of this application can achieve the following effects:

[0115] 1. The embodiments of this disclosure are based on the control commands received by the main station of the stability control system. The electrolytic aluminum load is adjusted by a preset programmable logic controller, thereby realizing the adjustment of the local power grid load and improving the system security and stability of the local power grid.

[0116] 2. Based on millisecond-level monitoring of frequency changes, the active power of the electrolytic aluminum load can be rapidly adjusted. This prevents significant frequency drops during transient processes.

[0117] 3. The combination of electrolytic aluminum regulation and primary frequency regulation of thermal power units has enabled the stable operation of the local power grid.

[0118] 4. Based on the current stability control system and strategy of the local power grid, add functions to the stability control master station to serve as the stability control system master station, modify the stability control strategy of the stability control system substation, and add a 4-20mA communication board to serve as the stability control system substation.

[0119] Corresponding to the aforementioned local power grid load regulation method, this application also proposes a device for local power grid load regulation. Since the device embodiment of this application corresponds to the aforementioned method embodiment, details not disclosed in the device embodiment can be referred to the aforementioned method embodiment, and will not be repeated here.

[0120] Figure 9This is a schematic diagram of the structure of a control device applied to the local power grid load on the electrolytic aluminum side, as provided in an embodiment of this disclosure. Figure 9 As shown, it includes:

[0121] The first setting unit 31 is used to set the first adjustment function for the main station of the stability control system based on the local power grid stability control system and strategy.

[0122] The first sending unit 32 is used to send control commands from the decision-making center to the stability control system substation based on the first adjustment function;

[0123] The second setting unit 33 is used to set a second adjustment function for the stability control system substation based on the addition of a communication board.

[0124] The second sending unit 34 is used to send the control command to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjustment function.

[0125] The adjustment unit 35 is used to adjust the electrolytic aluminum load based on the control command received from the programmable logic controller based on a preset value.

[0126] The local power grid load regulation device disclosed herein, based on a local power grid stability control system and strategy, sets a first regulation function for the main station of the stability control system; based on the first regulation function, it sends control commands from the decision-making center to the substations of the stability control system; based on the addition of a communication board, it sets a second regulation function for the substations of the stability control system; based on the second regulation function, it sends the control commands to a preset slave programmable logic controller (PLC) through a preset master PLC; and based on the preset slave PLC receiving the control commands, it regulates the electrolytic aluminum load. Compared with related technologies, this device regulates the electrolytic aluminum load through a preset slave PLC based on the control commands received by the main station of the stability control system, thereby achieving regulation of the local power grid load and improving the system security and stability of the local power grid.

[0127] Figure 10 A schematic diagram of another control device for the local power grid load on the electrolytic aluminum side, provided in an embodiment of this disclosure, is shown below. Figure 10 As shown, the device further includes:

[0128] Forwarding unit 36: When the control command sent from the main station of the stability control system to the substation of the stability control system is a non-load shedding command, the substation of the stability control system directly forwards the control command.

[0129] Judgment unit 37: When the control command sent from the main station of the stability control system to the substation of the stability control system is a load shedding command, the substation of the stability control system compares the load shedding command with the local frequency and determines the validity of the load shedding command;

[0130] The first determining unit 38 determines that the load shedding command is valid when the local frequency preset threshold and preset change rate are met.

[0131] The second determining unit 39 determines that the load shedding command is invalid when the local frequency preset threshold and preset change rate are not met.

[0132] Furthermore, in one possible implementation of this embodiment, such as Figure 10 As shown, the second transmitting unit 34 includes:

[0133] Conversion module 341 is used to convert the control command into an analog signal based on the stability control system substation;

[0134] Receiving module 342 is used to receive the analog signal based on the preset main programmable logic controller;

[0135] The distribution module 343 is used to distribute the analog signal to a preset slave programmable logic controller based on the preset master programmable logic controller.

[0136] Furthermore, in one possible implementation of this embodiment, such as Figure 10 As shown, the adjustment unit 35 includes:

[0137] Adjustment module 351 is used to dynamically adjust the impedance of the saturated reactor based on the current value of the rectifier unit from the programmable logic controller.

[0138] The adjustment module 352 is used to adjust the electrolytic aluminum load based on the adjustment of the saturated reactor.

[0139] Furthermore, in one possible implementation of this embodiment, such as Figure 10 As shown, the device further includes:

[0140] The third setting unit 310 is used to set a fast frequency response control function for the main station of the stability control system and the substation of the stability control system, and to connect the main station of the stability control system and the substation of the stability control system to at least one power control system.

[0141] The setting unit 311 is used to set a preset hierarchical control range for the at least one power control system and to monitor the commands issued by the at least one power control system.

[0142] Figure 11 This is a schematic diagram of the structure of a control device for a local power grid load applied to a local power grid side, as provided in an embodiment of this disclosure. Figure 11 As shown, it includes:

[0143] Monitoring unit 41 is used to monitor the frequency change of the local power grid in milliseconds based on the frequency deviation feedback amount introduced by the local power grid.

[0144] The sending unit 42 is used to send control commands for electrolytic aluminum load regulation from the decision-making center to the main station of the stability control system based on the frequency changes of the local power grid.

[0145] The weakening unit 43 is used to automatically weaken the control effect of the main station and the substation of the stability control system during the steady-state process, so that the thermal power unit can perform the primary frequency regulation function.

[0146] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0147] Figure 12 A schematic block diagram of an example electronic device 500 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0148] like Figure 12 As shown, device 500 includes a computing unit 501, which can perform various appropriate actions and processes based on a computer program stored in ROM (Read-Only Memory) 502 or a computer program loaded from storage unit 508 into RAM (Random Access Memory) 503. RAM 503 can also store various programs and data required for the operation of device 500. The computing unit 501, ROM 502, and RAM 503 are interconnected via bus 504. I / O (Input / Output) interface 505 is also connected to bus 504.

[0149] Multiple components in device 500 are connected to I / O interface 505, including: input unit 506, such as keyboard, mouse, etc.; output unit 507, such as various types of monitors, speakers, etc.; storage unit 508, such as disk, optical disk, etc.; and communication unit 509, such as network card, modem, wireless transceiver, etc. Communication unit 509 allows device 500 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0150] The computing unit 501 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 501 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 501 performs the various methods and processes described above, such as methods for regulating local power grid loads. For example, in some embodiments, the method for regulating local power grid loads can be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 508. In some embodiments, part or all of the computer program can be loaded and / or installed on device 500 via ROM 502 and / or communication unit 509. When the computer program is loaded into RAM 503 and executed by the computing unit 501, one or more steps of the methods described above can be performed. Alternatively, in other embodiments, the computing unit 501 may be configured to perform the aforementioned local power grid load regulation method by any other suitable means (e.g., by means of firmware).

[0151] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System-on-Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0152] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0153] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0154] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0155] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include LANs (Local Area Networks), WANs (Wide Area Networks), the Internet, and blockchain networks.

[0156] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service ecosystem, addressing the shortcomings of traditional physical hosts and VPS (Virtual Private Server, or simply "VPS") services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0157] It's important to note that artificial intelligence (AI) is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It encompasses both hardware and software technologies. AI hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0158] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0159] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method for regulating load of a local power grid, characterized in that, The method applied to the electrolytic aluminum side comprises: a first adjustment function is set for a main station of a stability control system based on the stability control system and strategy of a local power grid; the stability control system is a large control system composed of control and monitoring devices of the local power grid, and the main station of the stability control system is a certain master node of the stability control system; a control command from a decision center is sent to a substation of the stability control system based on the first adjustment function; a second adjustment function is set for the substation of the stability control system based on an additional communication board card; the control command is sent to a preset slave programmable logic controller through a preset master programmable logic controller based on the second adjustment function; the electrolytic aluminum load is adjusted based on the control command received by the preset slave programmable logic controller; wherein, before the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjustment function, the method further comprises: if the control command sent by the main station of the stability control system to the substation of the stability control system is a non-load shedding command, the control command is directly forwarded by the substation of the stability control system; if the control command sent by the main station of the stability control system to the substation of the stability control system is a load shedding command, the load shedding command is compared with a local frequency by the substation of the stability control system and the validity of the load shedding command is judged; if a preset threshold and a preset change rate of the local frequency are met, it is determined that the load shedding command is valid; if the preset threshold and the preset change rate of the local frequency are not met, it is determined that the load shedding command is invalid; wherein, the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjustment function, which comprises: the control command is converted into an analog signal based on the substation of the stability control system; the analog signal is received based on the preset master programmable logic controller; the analog signal is distributed to the preset slave programmable logic controller based on the preset master programmable logic controller.

2. The method of claim 1, wherein, the adjustment of the electrolytic aluminum load based on the control command received by the preset slave programmable logic controller comprises: the preset slave programmable logic controller dynamically adjusts the impedance of a saturable reactor according to the current value of a rectifier unit; the electrolytic aluminum load is adjusted based on the adjustment of the saturable reactor.

3. The method of claim 1, wherein the step of modulating comprises: The method further comprises: a fast frequency response control function is set for the main station of the stability control system and the substation of the stability control system, and the main station of the stability control system and the substation of the stability control system are connected to at least one power control system; a preset hierarchical control range is set for the at least one power control system, and the commands issued by the at least one power control system are monitored.

4. A method for regulating a load of a local power grid, characterized by, The regulation method applied to the local power grid side further comprises: a frequency deviation feedback amount introduced by the local power grid is used to millisecond-level monitor the frequency change of the local power grid; a control command for adjusting the electrolytic aluminum load is sent from a decision center to the main station of the stability control system based on the frequency change of the local power grid; in a steady state process, the control effect of the main station of the stability control system and the substation of the stability control system is automatically weakened, so that the thermal power unit plays a primary frequency modulation function. The process of the electrolytic aluminum load adjustment comprises: based on a local power grid stability control system and strategy, setting a first adjustment function for a stability control system master station; the stability control system is a large control system composed of control and monitoring devices of the local power grid, and the stability control system master station is a certain master node of the stability control system; Based on the first adjustment function, the control command from the decision center is sent to the stability control system slave station; Based on the added communication board card, a second adjustment function is set for the stability control system slave station; Based on the second adjustment function, the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller; Based on the preset slave programmable logic controller, the control command is received to adjust the electrolytic aluminum load; Before the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjustment function, the method further comprises: If the control command sent by the stability control system master station to the stability control system slave station is a non-load shedding command, the stability control system slave station directly forwards the control command; If the control command sent by the stability control system master station to the stability control system slave station is a load shedding command, the stability control system slave station compares the load shedding command with the local frequency and judges the validity of the load shedding command; If the local frequency preset threshold and the preset change rate are met, it is determined that the load shedding command is valid; If the local frequency preset threshold and the preset change rate are not met, it is determined that the load shedding command is invalid; The method further comprises: Based on the stability control system slave station, the control command is converted into an analog signal; Based on the preset master programmable logic controller, the analog signal is received; Based on the preset master programmable logic controller, the analog signal is distributed to the preset slave programmable logic controller.

5. A device for regulating the load of a local power grid, characterized in that The device applied to the electrolytic aluminum side comprises: A first setting unit is configured to set a first adjustment function for a stability control system master station based on a local power grid stability control system and strategy; A first sending unit is configured to send a control command from a decision center to a stability control system slave station based on the first adjustment function; A second setting unit is configured to set a second adjustment function for the stability control system slave station based on an added communication board card; A second sending unit is configured to send the control command to a preset slave programmable logic controller through a preset master programmable logic controller based on the second adjustment function; An adjustment unit is configured to adjust an electrolytic aluminum load based on the control command received by the preset slave programmable logic controller; The stability control system is a large control system composed of control and monitoring devices of the local power grid, and the stability control system master station is a certain master node of the stability control system; The device further comprises: The adjusting unit is configured to, before the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjusting function, if the control command sent by the master station of the stability control system to the substation of the stability control system is a non-load shedding command, directly forwarding the control command by the substation of the stability control system; if the control command sent by the master station of the stability control system to the substation of the stability control system is a load shedding command, comparing the load shedding command with the local frequency and judging the validity of the load shedding command by the substation of the stability control system; if the local frequency meets the preset threshold and the preset change rate, determining that the load shedding command is valid; if the local frequency does not meet the preset threshold and the preset change rate, determining that the load shedding command is invalid; wherein the sending of the control command to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjusting function comprises: converting the control command into an analog signal based on the substation of the stability control system; receiving the analog signal based on the preset master programmable logic controller; distributing the analog signal to the preset slave programmable logic controller based on the preset master programmable logic controller.

6. A device for regulating the load of a local power grid, characterized in that The control device is applied to a local power grid side, and further comprises: a monitoring unit configured to millisecond-level monitor a frequency change of the local power grid based on a frequency deviation feedback amount introduced by the local power grid; a sending unit configured to send a control command for electrolytic aluminum load adjustment to the master station of the stability control system by the decision-making master station based on the frequency change of the local power grid; a weakening unit configured to automatically weaken the control effect of the master station of the stability control system and the substation of the stability control system in a steady state process, so that the thermal power unit plays a primary frequency modulation function; wherein the process of the electrolytic aluminum load adjustment comprises: setting a first adjusting function for the master station of the stability control system based on a stability control system and a strategy of the local power grid; wherein the stability control system is a large control system composed of control and monitoring equipment of the local power grid, and the master station of the stability control system is a certain master node of the stability control system; sending a control command from the decision-making master station to the substation of the stability control system based on the first adjusting function; setting a second adjusting function for the substation of the stability control system based on an additional communication board card; sending the control command to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjusting function; adjusting the electrolytic aluminum load based on the control command received by the preset slave programmable logic controller; wherein, before the control command is sent to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjusting function, the device further comprises: a forwarding unit configured to, when the control command sent by the master station of the stability control system to the substation of the stability control system is a non-load shedding command, directly forwarding the control command by the substation of the stability control system; a judging unit configured to, when the control command sent by the master station of the stability control system to the substation of the stability control system is a load shedding command, comparing the load shedding command with the local frequency and judging the validity of the load shedding command by the substation of the stability control system; The first determining unit determines that the load shedding command is valid when the local frequency preset threshold and the preset change rate are met. The second determining unit determines that the load shedding command is invalid when the local frequency preset threshold and the preset change rate are not met. The sending of the control command to the preset slave programmable logic controller through the preset master programmable logic controller based on the second adjusting function includes: Converting the control command into an analog signal based on the stable control system substation; Receiving the analog signal based on the preset master programmable logic controller; Distributing the analog signal to a preset slave programmable logic controller based on the preset master programmable logic controller.

7. An electronic device, comprising: It comprises: At least one processor; And a memory connected in communication with the at least one processor; wherein The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method of any one of claims 1-3 or 4.

8. A computer program product, characterised in that, It comprises a computer program, which, when executed by a processor, implements the method according to any one of claims 1-3 or 4. It comprises a computer program, which, when executed by a processor, implements the method according to any one of claims 1-3 or 4.

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