Configuration method and system for voltage regulation device at tail end of distribution network line

Abstract

The invention discloses a configuration method and system for a terminal voltage regulation device of a distribution network line. The method comprises the following steps: constructing a voltage distribution model of a target station area line; constructing a line load distribution model of the target transformer area; according to the first constraint condition, obtaining the access position of the voltage regulation device; determining the capacity of a voltage regulation device at an access position according to the transformer area line load distribution model; according to a second constraint condition, updating the target transformer area line voltage distribution model; acquiring a subsequent access position of the voltage regulation device according to the first constraint condition; and according to the transformer area line load distribution model, determining the capacity of a voltage regulation device at a subsequent access position until the voltages at the tail ends of all branch lines of the target transformer area line are regulated and controlled to be qualified. The transformer area line voltage distribution model and the line load distribution model can be quickly established according to voltage and load data acquired by a centralized meter reading system, and errors are avoided; according to the method, configuration calculation can be independently performed on each branch line of the target transformer area.

Description

Technical Field

[0001] The present invention belongs to the technical field of power supply quality management of distribution networks, and specifically relates to a method and system for configuring a voltage regulating device at the end of a distribution network line. Background Art

[0002] The voltage regulator at the end of the distribution network line is a device that realizes decentralized voltage adjustment of the power grid. It consists of a special voltage regulator and a controller that can track the voltage at the end of the line according to the load size. It is connected in series in the power supply line to automatically adjust the voltage of the entire line so that the voltage of the line meets the load demand. However, the connection location and configuration capacity of such devices have a great impact on the voltage quality effect and investment economy. At present, there are no relevant specifications or guidelines in engineering applications.

[0003] The prior art document (CN118630778A) discloses a hybrid 10kV series-parallel compensation device and its optimal configuration method. The document uses reactive compensation to balance the inductive reactive load on the line, and uses circuit principles to determine the access position and capacity based on the flow distribution and voltage distribution before and after compensation. The above process requires complex electrical calculations, which is time-consuming and inefficient. In addition, the final configuration solution only has one device accessed to the optimal position or capacity, which is less applicable to scenarios where multiple devices need to be accessed. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a method for configuring a voltage regulator at the end of a distribution network line. Based on the voltage distribution and dynamic load conditions of the target substation, the connection position and capacity of the series voltage regulator are calculated. According to various types of voltage regulators on the market and usage scenarios, the selection, configuration, installation location and other configuration schemes of the voltage regulator can be obtained, which will have important guiding significance for the design and manufacturing of voltage regulator manufacturers, and the selection, application and acceptance of power grid companies. The present invention adopts the following technical solutions: The first aspect of the present invention discloses a method for configuring a voltage regulator at the end of a distribution network line, the method being applied to calculating the access position and capacity of a series voltage regulator on a low-voltage line in a target area, and characterized by comprising: Step 1, constructing a line voltage distribution model of the target area; Step 2, constructing the target area line load distribution model; Step 3, according to the first constraint condition and the target area line voltage distribution model established in step 1, obtain the access position of the voltage regulator; the access position is the position where the voltage of each branch line of the target area line remains qualified at any time, wherein the voltage of the first constraint condition is qualified by the upper limit value and the lower limit value; Step 4, determining the capacity of the voltage regulator at the access location according to the target area line load distribution model established in step 2; updating the target area line voltage distribution model according to the second constraint condition; Step 5: After adding a voltage regulator to the line and determining the capacity of the device, the target area line voltage distribution model established in step 1 is updated according to the second constraint condition, wherein the second constraint condition is that the voltage regulation value output by the voltage regulator should meet the voltage upper and lower limit standard requirements and the rated regulation capacity of the voltage regulator; Step 6, according to the first constraint condition, and in accordance with step 3, obtaining a subsequent access position of the voltage regulating device; Step 7, according to the load distribution model of the substation line, in accordance with step 4, determine the capacity of the voltage regulating device at the subsequent access position until the voltage at the end of all branch lines of the target substation line can be regulated to a qualified level.

[0005] Step 8, repeat steps 5 to 7 until the voltages at the ends of all branch lines of the target area line are regulated to meet the standards.

[0006] Preferably, the target area line voltage distribution model is constructed, which can be expressed by the following formula: (1) in, is a certain time point of the i-th branch line in the target area, Voltage value at the location; is the distance from a certain position of the i-th branch line to the starting point of the station area, is the total length of the i-th branch line.

[0007] Preferably, the target area line load distribution model is constructed, which can be expressed by the following formula: (2) in, is a certain time point of the i-th branch line in the target area, Load value at the location.

[0008] Preferably, the first constraint condition can be expressed by the following formula: (3) Among them, Indicates the voltage value at the starting point of the station at any time. The qualified upper limit of the low-voltage line voltage in the substation area, The lower limit of the acceptable voltage for low-voltage lines in the substation area.

[0009] Preferably, the voltage of each branch line remains at a qualified position at any time, which can be expressed by the following formula: (4) in, The voltage of branch line i remains qualified at any time. is the location where the voltage of branch line i is qualified at time t, and .

[0010] Preferably, the voltage remains qualified and can be expressed by the following formula: (5) in, is the line voltage distribution function in the background area after the kth update, It is the voltage regulation value output by the voltage regulation device.

[0011] Preferably, the capacity of the voltage regulator at the access location is: (6) in, The capacity of the voltage regulator at the access point of branch line i, The voltage of branch line i remains at the qualified position at any time.

[0012] Preferably, the target area line voltage distribution model is updated, which can be expressed by the following formula: (7) in, is the line voltage distribution function in the background area after the kth update, is the voltage regulation value output by the voltage regulation device. Preferably, the second constraint condition can be expressed by the following formula: (8) in, Rated regulation capability of voltage regulator.

[0013] A second aspect of the present invention provides a distribution network line end voltage regulator configuration system, which runs the above-mentioned distribution network line end voltage regulator configuration method, including: A model building module, used to build a line voltage distribution model and a line load distribution model; An access position calculation module, used to calculate an access position of the voltage regulating device according to the first constraint condition; A capacity calculation module, used to determine the capacity of the voltage regulator according to the line load distribution model; A model updating module, used for updating the voltage distribution model according to the second constraint condition; The voltage regulation module is used to determine the subsequent access location and device capacity of the voltage regulation device after the voltage distribution model is updated, so as to regulate all line voltages to a qualified level.

[0014] The beneficial effect of the present invention is that, compared with the prior art, the method for configuring the voltage regulator at the end of the distribution network line proposed by the present invention calculates the access position and capacity of the series voltage regulator according to the voltage distribution and dynamic load conditions of the target substation, and the calculation result is consistent with the load characteristics of the target substation and the line grid structure; the substation line voltage distribution model and substation line load distribution model adopted can be quickly established according to the voltage and load data collected by the meter reading system, without the need for simulation or empirical calculations such as conductor parameters and load prediction, thus avoiding errors; this method can perform configuration calculations for each branch line of the non-target substation separately, and at the same time, update the model after determining the device access position, and calculate the configuration plan of the voltage regulator on the subsequent line until the end of the line is guaranteed to be within the qualified range. This method uses the calculation of the access position and configuration capacity of the voltage regulator on the line when the distributed power source is connected to overvoltage control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The topological map of the application scenario area provided for this application; Figure 2 It is a flow chart of the configuration method; Figure 3 Load distribution diagram of the fourth branch 4 of the target area line; Figure 4 Schematic diagram of updating the line voltage distribution model in the target substation area; Figure 5 The first calculation result of the voltage regulator connection position; Figure 6 The second calculation result of the voltage regulating device connection position; Figure 7 The third calculation result of the voltage regulator connection position; Figure 8 The updating process of line voltage distribution model in the substation area with overvoltage problem. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] [1] Method Example See also Figure 2 The first embodiment of the present invention discloses a method for configuring a voltage regulating device at the end of a distribution network line.

[0018] 【1.1】 Constructing line voltage distribution model Step 1: Use the historical data collected by the meter reading system or monitoring to form a voltage distribution curve, and construct the target substation line voltage distribution model according to the voltage distribution curve.

[0019] In this step, based on the historical voltage data of the line nodes collected by the meter reading system or monitoring system, the voltage-distance distribution curve of each branch line in the substation area is established. The voltage-distance distribution curves of all branches at all times constitute a voltage distribution model. The target substation line voltage distribution model can be expressed by formula (1): (1) in, is the i-th branch line in the target area The voltage value at a certain point in time at a location; is the distance from a certain position of the i-th branch line to the starting point of the station area, is the total length of the i-th branch line.

[0020] 【1.2】 Constructing line load distribution model Step 2: construct the target substation line load distribution model.

[0021] In this step, the target area line load distribution model is constructed according to formula (2): (2) in, is a certain time point of the i-th branch line in the target area, Load value at the location; is the distance from a certain position of the i-th branch line to the starting point of the station area, is the total length of the i-th branch line, and n is the total number of branch lines.

[0022] As a prominent substantive feature of the present invention and one of the significant advances brought to the prior art, the present invention forms a voltage distribution model by constructing the voltage-distance distribution curves of all branches at all times, and in the process of establishing the voltage distribution model, calculates the qualified critical position of each branch voltage at each time, and determines the access position based on all position results. The present invention selects voltage as a typical case for analysis, and the line load distribution model of the present invention is also established based on the historical data of the line node, without considering the changes in active and reactive power after the equipment is connected, thereby avoiding complex electrical calculations.

[0023] 【1.3】 Calculate the access position based on the first constraint Step 3, according to the first constraint condition and the target line voltage distribution model established in step 1, obtain the access position of the voltage regulating device; the access position is the position where the voltage of each branch line of the target substation line remains qualified at any time.

[0024] Step 3.1, the first constraint condition is: (3) Among them, Indicates the voltage value at the starting point of the station at any time. Indicates the voltage value of each branch line in the substation at any time. The qualified upper limit of the low-voltage line voltage in the substation area, The lower limit of the acceptable voltage for low-voltage lines in the substation area.

[0025] like Figure 4 As shown, the upper and lower limits of voltage compliance are set at 235.4V and 198V according to national standards.

[0026] Step 3.2: The voltage of each branch line at any time remains qualified and meets the following conditions: (4) in, The voltage of branch line i remains qualified at any time. is the position where the voltage of branch line i at time t is qualified, that is satisfy ,and .

[0027] Preferably, the voltage regulating device in the present invention is a voltage regulating transformer or a voltage regulating power electronic converter.

[0028] As a prominent substantive feature of the present invention and one of the significant advances it brings to the prior art, the present invention is a voltage regulating device directly on the line, which regulates the line voltage after the access point (in the load direction), which can be increased or decreased, and can regulate both overvoltage and undervoltage situations at the same time.

[0029] 【1.4】 Determine the capacity of the voltage regulator Step 4: Determine the capacity of the voltage regulating device at the access location based on the line load distribution model in the substation area described in step 2.

[0030] In this step, the calculation formula for the capacity of the voltage regulator at the access location is as follows: (5) in, The capacity of the voltage regulator at the access point of branch line i, The voltage of branch line i remains at the qualified position at any time.

[0031] 【1.5】 Update the voltage distribution model according to the second constraint Step 5: After adding a voltage regulator to the line and determining the capacity of the voltage regulator, the target area line voltage distribution model constructed in step 1 is updated according to the second constraint condition.

[0032] Step 5.1, the second constraint: (6) in, Rated regulation capability of voltage regulator, The qualified upper limit of the low-voltage line voltage in the substation area, The lower limit of the low-voltage line voltage in the substation area is as follows: It is the voltage regulation value output by the voltage regulation device.

[0033] Step 5.2, updating the target area line voltage distribution model is to increase or decrease the voltage adjustment value output by the voltage regulating device on the previous round of voltage distribution model, according to the following formula: (7) in, is the line voltage distribution function in the background area after the kth update, is the voltage regulation value output by the voltage regulation device, is the voltage distribution model established in step 1.

[0034] The voltage regulation value output by the voltage regulator should meet the voltage upper and lower limit standard requirements and the rated regulation capacity of the voltage regulator, which can be set as .

[0035] 【1.6】 Determine the subsequent connection location and capacity of the voltage regulator Step 6: After the target substation line voltage model is updated in step 5, the subsequent access position of the voltage regulating device is obtained according to the first constraint condition.

[0036] For the i-th branch that needs voltage regulation, repeat the method described in step 3 according to the updated branch voltage distribution model to determine the position where the voltage on the branch remains qualified at any time. , as the subsequent access location of the voltage regulating device.

[0037] Step 7: According to the line load distribution model of the substation area, determine the capacity of the voltage regulating device at the subsequent access location according to step 4.

[0038] Step 8, repeat steps 5 to 7 until the voltages at the ends of all branch lines of the target area line can be regulated to meet the standards.

[0039] As a prominent substantive feature of the present invention and one of the significant advances it brings to the prior art, the present invention updates the model when a device is connected and the voltage distribution at the end of the line changes. If the voltage is still unqualified, the next access position is calculated again. Each update and calculation process does not calculate the access position of the same device, but calculates the optimal configuration of access positions and capacities of multiple devices.

[0040] 【2】 System implementation A second embodiment of the present invention provides a distribution network line end voltage regulator configuration system, which runs a distribution network line end voltage regulator configuration method described in embodiment 1, including: A model building module, used to build a line voltage distribution model and a line load distribution model; An access position calculation module, used to calculate an access position of the voltage regulating device according to the first constraint condition; A capacity calculation module, used to determine the capacity of the voltage regulator according to the line load distribution model; A model updating module, used for updating the voltage distribution model according to the second constraint; The voltage regulation module is used to determine the subsequent access location and device capacity of the voltage regulation device after the voltage distribution model is updated, so as to regulate all line voltages to a qualified level.

[0041] 【3】 Verification example In order to more clearly introduce the outstanding essential features of the present invention and the significant progress it brings to the prior art, an example of applying the present invention is given below. Figure 1 In a distribution substation, the transformer is 10 / 0.4kV, the low-voltage line is three-phase four-wire, and the rated phase voltage is 220V; according to the number of substation line ends, the substation is divided into the first branch 1 of the target substation line, the second branch 2 of the target substation line, the third branch 3 of the target substation line, the fourth branch 4 of the target substation line, the fifth branch 5 of the target substation line, and the sixth branch 6 of the target substation line. The line lengths are set to 200 meters, 300 meters, 400 meters, 500 meters, 400 meters, and 300 meters respectively; the voltage at the starting point 7 of the target substation and all branches must meet the national standard requirements of -10%~7%. The fourth branch 4 of the target substation line is taken as an example for explanation below.

[0042] First, according to step 1 of the method described in Example 1 of the present invention, a line voltage distribution model is established. Taking the fourth branch 4 of the target area line as an example, its voltage distribution is set to As shown in Table 1.

[0043] Table 1

[0044] Furthermore, a line load distribution model is established according to step 2 of the method described in Example 1 of the present invention.

[0045] like Figure 3 As shown, the load distribution of the fourth branch 4 of the target area line .

[0046] According to step 3 of the method described in Example 1 of the present invention, based on the first constraint condition, the access position of the voltage regulating device is obtained; the access position is a position where the voltage of each branch line of the target substation line remains qualified at any time.

[0047] As shown in Table 1, the positions where the voltage remains qualified in each period are ;because Therefore, the voltage of the fourth branch 4 of the target area line remains qualified at 200 meters, that is, Figure 3 Middle a The corresponding time is 18:00. Therefore, the location where the voltage regulator is first connected on the fourth branch 4 is 200 meters away. The location calculation of the voltage regulators on other branches is also carried out in the same way according to their respective voltage distribution models. The calculation results are set as follows Figure 5 As shown, the position where the area H001 where the voltage remains qualified at any time intersects with the six branch lines is the position 11 where the first branch of the target substation line is first connected to the voltage regulating device, the position 12 where the first branch of the target substation line is first connected to the voltage regulating device, the position 13 where the third and fourth branches of the target substation line are first connected to the voltage regulating device, the position 14 where the fifth branch of the target substation line is first connected to the voltage regulating device, and the position 15 where the sixth branch of the target substation line is first connected to the voltage regulating device, where the voltage regulating device connection position 13 is on the common trunk line of the third branch 3 of the target substation line and the fourth branch 4 of the target substation line, and this part of the voltage distribution model and the load distribution model are exactly the same.

[0048] The substation determines the capacity of the voltage regulating device at the access location according to the established line load distribution model in step 4 of the method described in Example 1 of the present invention.

[0049] Take the fourth branch 4 of the target area line as an example. Figure 3 As shown, the load curve at 200 meters of the fourth branch 4 of the target area line The maximum value is 340kW, which is the capacity of the voltage regulator at the access position of the fourth branch 4 of the target area line. The capacity calculation of other branch voltage regulating devices is also carried out in the same way according to their respective load distribution models and access locations.

[0050] According to step 5 of the method described in embodiment 1 of the present invention, the target substation line voltage distribution model is updated according to the second constraint condition.

[0051] Updating the target substation line voltage distribution model is to increase or decrease the voltage adjustment value output by the voltage regulator on the previous round of voltage distribution model. As shown in Table 1, the problem of the fourth branch 4 of the target substation line is that the voltage is below the lower limit of the voltage standard, and the voltage regulator needs to be boosted to increase the voltage by 37.4V; the target substation line fourth branch 4 line voltage distribution model is updated to ,in The voltage distribution model of the fourth branch 4 line of the target area is updated as follows: Figure 4 After access, 0~1 b The situation between.

[0052] According to step 6 of the method described in embodiment 1 of the present invention, the connection position of the voltage regulating device after the voltage distribution model is updated is determined. Taking the fourth branch 4 as an example, the calculation process of step 3 is repeated, such as Figure 4 After access a ~l b The voltage between the two is kept at the qualified position. b Place, that is Therefore, the second access position of the voltage regulator on the fourth branch 4 is l b The location calculation of other branch voltage regulators is also carried out in the same way according to their respective voltage distribution models. The settlement results are set as follows: Figure 6 As shown, the area H002 where the voltage remains qualified at any time after the voltage distribution model only intersects with the fourth branch 4 of the target substation line. The intersection point is the position 21 where the fourth branch of the target substation line is connected to the voltage regulating device for the second time. The voltages of other branches are all qualified and there is no need to deploy voltage regulating devices.

[0053] According to step 7 of the method described in embodiment 1 of the present invention, the capacity of the voltage regulator is calculated. The location 21 where the fourth branch of the target area line is connected to the voltage regulator for the second time is set at 400 meters. Figure 3 As shown, the load curve at 400 meters of the fourth branch 4 of the target area line The maximum value is 160kW, which is the capacity of the voltage regulator at the access position of the fourth branch 4 of the target area line. .

[0054] Then, continue to update the target area line voltage distribution model according to steps 5 to 7 of the method described in Example 1 of the present invention to obtain the following: Figure 4 Middle b Then calculate the access location as follows Figure 7As shown, the area H003 where the voltage remains qualified at any time after the voltage distribution model only intersects with the fourth branch 4 of the target substation line, and the intersection point is the location 31 where the fourth branch of the target substation line is connected to the voltage regulator for the third time. The location 21 where the fourth branch of the target substation line is connected to the voltage regulator for the second time is set at 450 meters. Figure 3 As shown, the load curve at 450 meters of the fourth branch 4 of the target area line The maximum value is 130kW, which is the capacity of the voltage regulator at the access position of the fourth branch 4 of the target area line. After the above process, the voltages at the ends of all branch lines of the target area line can be regulated to be qualified, and the line voltage distribution model update and voltage regulation device configuration calculation process are completed.

[0055] The above specific implementation process is explained by taking the substation with undervoltage problem as an example. When there is an overvoltage problem in the substation, the voltage regulator needs to reduce the voltage by 37.4V. The substation line voltage distribution model is updated using , the update process is as follows Figure 8 shown.

[0056] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A method for configuring a voltage regulator at the end of a distribution network line, characterized in that: include: Step 1, constructing a line voltage distribution model of the target area; Step 2, constructing a line load distribution model for the target area; Step 3, determining the access location of the voltage regulator according to the first constraint condition and the target area line voltage distribution model established in step 1; Step 4, determining the capacity of the voltage regulating device at the access location according to the target area line load distribution model established in step 2; Step 5: after adding a voltage regulator to the line and determining the capacity of the device, the target area line voltage distribution model established in step 1 is updated according to the second constraint condition; Step 6, after updating the target area line voltage model in step 5, according to the first constraint condition, in accordance with step 3, the subsequent access position of the voltage regulator is obtained; Step 7, according to the load distribution model of the substation line, according to step 4, determine the capacity of the voltage regulator at the subsequent access location; Step 8, repeat steps 5 to 7 until the voltages at the ends of all branch lines of the target area line are regulated to meet the standards.

2. A method for configuring a voltage regulator at the end of a distribution network line according to claim 1, characterized in that: The step of constructing a target area line voltage distribution model includes: The target area line voltage distribution model constructed in step 1 can be expressed by the following formula: （1） in, is the time t of the i-th branch line in the target area, Voltage value at the location; is the distance from a certain position of the i-th branch line to the starting point of the station area, is the total length of the i-th branch line, and n is the total number of branch lines.

3. A method for configuring a voltage regulator at the end of a distribution network line according to claim 1, characterized in that: include: The target area line load distribution model constructed in step 2 can be expressed by the following formula: （2） in, is the time t of the i-th branch line in the target area, Load value at the location; is the distance from a certain position of the i-th branch line to the starting point of the station area, is the total length of the i-th branch line, and n is the total number of branch lines.

4. A method for configuring a voltage regulator at the end of a distribution network line according to claim 1, characterized in that: The first constraint in step 3 can be expressed as follows: (3) in, Indicates the voltage value at the starting point of the station at any time. The qualified upper limit of the low-voltage line voltage in the substation area, The lower limit of the low-voltage line voltage in the substation area is as follows: Indicates the voltage value of each branch line in the substation at any time, where is 235.4V, It is 198V.

5. A method for configuring a voltage regulator at the end of a distribution network line according to claim 4, characterized in that: The access position in step 3 is the position where the voltage of each branch line remains qualified at any time, which can be expressed by the following formula: (4) in, The voltage of branch line i remains qualified at any time. is the position where the voltage of branch line i is qualified at time t.

6. A method for configuring a voltage regulator at the end of a distribution network line according to claim 5, characterized in that: The condition that the voltage remains qualified in step 3 can be expressed by the following formula: (5) in: is the position where the voltage of branch line i is qualified, The qualified upper limit of the low-voltage line voltage in the substation area, The lower limit of the low-voltage line voltage in the substation area is as follows: is the time point of the i-th branch line in the target area The voltage value at the location.

7. A method for configuring a voltage regulator at the end of a distribution network line according to claim 1, characterized in that: The capacity of the voltage regulator at the access location in step 4 can be expressed by the following formula: (6) in, The capacity of the voltage regulator at the access point of branch line i, The voltage of branch line i maintains the load value of the qualified position at any time.

8. A method for configuring a voltage regulator at the end of a distribution network line according to claim 1, characterized in that: The updating of the target area line voltage distribution model comprises: In step 5, the target area line voltage distribution model is updated, which can be expressed by the following formula: (7) in, is the line voltage distribution function in the background area after the kth update, It is the voltage regulation value output by the voltage regulation device.

9. A method for configuring a voltage regulator at the end of a distribution network line according to claim 8, characterized in that: The second constraint in step 5 can be expressed as follows: (8) in, Rated regulation capability of voltage regulator, The qualified upper limit of the low-voltage line voltage in the substation area, The lower limit of the low-voltage line voltage in the substation area is as follows: The voltage of branch line i remains qualified at any time. is the distance from a certain position of the i-th branch line to the starting point of the station area, is the voltage regulation value.

10. A distribution network line end voltage regulator configuration system, running a distribution network line end voltage regulator configuration method as claimed in claims 1 to 9, characterized in that: include: A model building module, used to build a line voltage distribution model and a line load distribution model; An access position calculation module, used to calculate an access position of the voltage regulating device according to the first constraint condition; A capacity calculation module, used to determine the capacity of the voltage regulator according to the line load distribution model; A model updating module, used for updating the voltage distribution model according to the second constraint condition; The voltage regulation module is used to determine the subsequent access location and device capacity of the voltage regulation device after the voltage distribution model is updated, so as to regulate all line voltages to a qualified level.

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