Voltage regulating lead characteristic verification method and related device

Abstract

The invention discloses a voltage regulating lead characteristic verification method and a related device, and relates to the field of power equipment. A connecting sleeve led out from an inlet of an auxiliary oil tank of a transformer is used as a measuring terminal of a voltage regulating lead; wherein the connecting sleeve is connected with a wiring terminal plate for connecting the switch selection part and the switch switching part of the split-type tap switch through a connecting wire. And controlling the target voltage injection device to inject a plurality of voltage values to the target terminal of the transformer in sequence according to the plurality of voltage values indicated by the voltage injection strategy and the injection sequence. And in the injection process of each voltage value, the split-type tap switch is controlled to be switched to a target gear indicated by the switch switching strategy. And verifying the characteristics of the voltage regulating lead according to the comparison result data of the voltage measurement value and the voltage simulation value of the measurement terminal under the target gear. And measuring the voltage regulating lead of the split-type tap switch under various working conditions and voltage values, and comparing the measured value with a simulation value to realize verification of design parameters.

Description

Technical Field

[0001] The present application relates to the technical field of power equipment, and in particular, to a method for verifying the characteristics of a voltage regulating lead and related devices. Background Art

[0002] Currently, for on-load tap-changer transformers using an integrated tap-changer, the on-load tap-changer has a complete test report separately conducted before assembly according to relevant regulations, and the structure is mature and reliable. However, for transformers using a split tap-changer, due to the lack of actual engineering operation cases, how to verify the performance related to the transformer of the on-load tap-changer installed on the transformer has become an urgent problem to be solved. Summary of the Invention

[0003] In view of the above problems, the present application provides a method for verifying the characteristics of a voltage regulating lead and related devices to achieve the purpose of measuring the relevant characteristics of a transformer with a split tap-changer. The specific solutions are as follows:

[0004] The first aspect of the present application provides a method for verifying the characteristics of a voltage regulating lead, which is applied to a transformer equipped with a split tap-changer and includes:

[0005] Obtain the operating conditions of the transformer and the voltage injection strategy;

[0006] Control a target voltage injection device to sequentially inject a plurality of voltage values into the target terminal of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy. The target voltage injection device is the voltage injection device corresponding to the operating conditions, the target terminal is the voltage injection terminal of the transformer under the operating conditions, and the voltage injection terminal is one or both of the valve side and network side terminals of the transformer;

[0007] During the injection of each voltage value, control the split tap-changer to switch to the target gear indicated by the switch switching strategy;

[0008] Verify the characteristics of the voltage regulating lead according to the comparison result data between the voltage measurement value and the voltage simulation value at the measurement terminal under the target gear. The voltage measurement value is the measurement value corresponding to each voltage value, the voltage simulation value is the simulation calculation value of each voltage value, the measurement terminal is the connecting bushing connected to the terminal board of the split tap-changer, the connecting bushing is arranged at the entrance of the secondary oil tank of the transformer, the terminal board is used to connect the switch selection part and the switch switching part of the split tap-changer, and the voltage regulating lead is the connecting wire of the voltage regulating coil connecting the terminal board and the switch selection part.

[0009] In a possible implementation, verifying the characteristics of the voltage regulating lead according to the comparison result data of the measured voltage value and the simulated voltage value of the measurement terminal at the target gear position includes:

[0010] If the comparison result data is within the preset deviation range, it is determined that the voltage regulating lead meets the design requirements; otherwise, it is determined that the voltage regulating lead does not meet the design requirements.

[0011] In a possible implementation, controlling the target voltage injection device to inject a plurality of voltage values to the target terminal of the transformer in sequence according to the plurality of voltage values and the injection order indicated by the voltage injection strategy includes:

[0012] Injecting the plurality of voltage values into the target terminal in ascending order.

[0013] In a possible implementation, verifying the characteristics of the voltage regulating lead according to the comparison result data of the measured voltage value and the simulated voltage value of the measurement terminal at the target gear position includes:

[0014] Verifying the characteristics of the voltage regulating lead according to the comparison result data of the instantaneous measured voltage value and the instantaneous simulated voltage value of the measurement terminal at the switching moment when switching to the target gear position; or,

[0015] Verifying the characteristics of the voltage regulating lead according to the comparison result data of the average measured voltage value and the average simulated voltage value of the measurement terminal within a preset time period after switching to the target gear position, where the preset time period is the time period from the switching moment to the target moment, and the target moment is the moment when the target voltage value is first reached after switching to the target gear position, and the target voltage value is the stable voltage value after switching to the target gear position.

[0016] In a possible implementation, when the operating condition is no-load operation, controlling the target voltage injection device to inject a plurality of voltage values to the target terminal of the transformer in sequence according to the plurality of voltage values and the injection order indicated by the voltage injection strategy includes:

[0017] Controlling the target power generation equipment to inject a plurality of voltage values to the two terminals on the valve side of the transformer in sequence according to the plurality of voltage values and the injection order indicated by the voltage injection strategy.

[0018] In a possible implementation, when the operating condition is an impact operation on the valve side, controlling the target voltage injection device to inject a plurality of voltage values to the target terminal of the transformer in sequence according to the plurality of voltage values and the injection order indicated by the voltage injection strategy includes:

[0019] Control the first target impact generating device to sequentially inject a plurality of the voltage values into one terminal on the valve side of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

[0020] In a possible implementation, when the operating condition is an impact operation on the grid side, the control target voltage injection device sequentially injects a plurality of the voltage values into the target terminal of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy, including:

[0021] Control the second target impact generating device to sequentially inject a plurality of the voltage values into one terminal on the grid side of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

[0022] A second aspect of the present application provides a voltage regulating lead characteristic verification device, including:

[0023] A test information acquisition module, configured to acquire the operating condition of the transformer and the voltage injection strategy;

[0024] A test voltage injection module, configured to control the target voltage injection device to sequentially inject a plurality of the voltage values into the target terminal of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy, where the target voltage injection device is the voltage injection device corresponding to the operating condition, the target terminal is the voltage injection terminal of the transformer under the operating condition, the voltage injection terminal is one or both of the valve side and grid side terminals of the transformer;

[0025] A test gear shifting module, configured to control the split tap changer to switch to the target gear indicated by the switch switching strategy during the injection process of each of the voltage values; and,

[0026] A test result verification module, configured to verify the characteristics of the voltage regulating lead according to the comparison result data of the voltage measurement value and the voltage simulation value at the measurement terminal under the target gear, where the voltage measurement value is the measurement value corresponding to each of the voltage values, the voltage simulation value is the simulation calculation value of each of the voltage values, the measurement terminal is the connection sleeve connected to the wiring terminal board of the split tap changer, the connection sleeve is arranged at the entrance of the secondary oil tank of the transformer, the wiring terminal board is used to connect the switch selection part and the switch switching part of the split tap changer, and the voltage regulating lead is the connecting wire of the voltage regulating coil connecting the wiring terminal board and the switch selection part.

[0027] A third aspect of the present application provides a computer program product, including computer-readable instructions, which when running on an electronic device, cause the electronic device to implement the voltage regulating lead characteristic verification method of the first aspect or any implementation manner of the first aspect.

[0028] A fourth aspect of the present application provides an electronic device, including at least one processor and a memory connected to the processor, wherein:

[0029] The memory is used to store a computer program;

[0030] The processor is used to execute the computer program so that the electronic device can implement the voltage regulating lead characteristic verification method of the above-mentioned first aspect or any implementation manner of the first aspect.

[0031] A fifth aspect of the present application provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the voltage regulating lead characteristic verification method of the above-mentioned first aspect or any implementation manner of the first aspect.

[0032] By means of the above technical solution, the voltage regulating lead characteristic verification method provided by the present application uses the connecting bushing led out from the inlet of the secondary oil tank of the transformer as the measurement terminal of the voltage regulating lead, and the connecting bushing is connected to the terminal board connecting the switch selection part and the switch switching part of the split type tap changer through a connecting wire. By controlling the target voltage injection device to inject a plurality of voltage values into the target terminal of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy. And during the injection of each voltage value, control the split type tap changer to switch to the target gear indicated by the switch switching strategy. According to the comparison result data of the voltage measurement value and the voltage simulation value at the measurement terminal under the target gear, verify the characteristics of the voltage regulating lead, where the voltage measurement value is the measurement value corresponding to each voltage value, and the voltage simulation value is the simulation calculation value of each voltage value. By measuring the voltage regulating lead under various working conditions and voltage values of the split type tap changer and comparing the measured voltage value with the simulation value, the verification of the design parameters is realized, providing a reliable reference for the transformer parameter design of the split type tap changer. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In combination with the drawings and referring to the following specific embodiments, the above and other features, advantages and aspects of the various embodiments of the present disclosure will become more obvious. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the original components and elements are not necessarily drawn to scale.

[0034] Figure 1 is a flowchart of a voltage regulating lead characteristic verification method provided by the present application;

[0035] Figure 2 is a wiring schematic diagram of the transient voltage transfer characteristic of the voltage regulating lead provided by the present application;

[0036] Figure 3 A test model diagram for measuring the transient voltage transfer characteristics of a voltage regulating lead provided by this application;

[0037] Figure 4 A test wiring diagram under no-load conditions provided by this application;

[0038] Figure 5 A measured waveform diagram under no-load conditions provided by this application;

[0039] Figure 6 Another measured waveform diagram under no-load conditions provided by this application;

[0040] Figure 7 A test connection diagram under the condition of impulse operation on the valve side provided by this application;

[0041] Figure 8 A set of measured waveform diagrams under the condition of impulse operation on the valve side provided by this application;

[0042] Figure 9 A test wiring diagram under the condition of impulse operation on the network side provided by this application;

[0043] Figure 10 The first waveform diagram under the condition of impulse operation on the network side provided by this application;

[0044] Figure 11 The first simulation result diagram under the condition of impulse operation on the network side provided by this application;

[0045] Figure 12 The second waveform diagram under the condition of impulse operation on the network side provided by this application;

[0046] Figure 13 The second simulation result diagram under the condition of impulse operation on the network side provided by this application;

[0047] Figure 14 The third waveform diagram under the condition of impulse operation on the network side provided by this application;

[0048] Figure 15 The third simulation result diagram under the condition of impulse operation on the network side provided by this application;

[0049] Figure 16 A structural diagram of a voltage regulating lead characteristic verification device provided by this application;

[0050] Figure 17 A structural diagram of an electronic device provided by this application. Detailed implementation manners

[0051] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The terms used in the embodiments of the present application are only for explaining the specific embodiments of the present application, and are not intended to limit the present application.

[0052] The embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that as technology develops and new scenarios emerge, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

[0053] The terms "first", "second", etc. in the specification, claims and accompanying drawings of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such terms may be interchanged under appropriate circumstances, which is only a way of distinguishing objects with the same attributes when describing the embodiments of the present application. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or device comprising a series of units need not be limited to those units, but may include other units not expressly listed or inherent to such process, method, product or device.

[0054] The embodiments of the present application provide a method for verifying the characteristics of a voltage regulating lead. The method for verifying the characteristics of the voltage regulating lead in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0055] Refer to Figure 1 , Figure 1 is a schematic flow chart of a method for verifying the characteristics of a voltage regulating lead provided in an embodiment of the present application. As Figure 1 shown, a method for verifying the characteristics of a voltage regulating lead provided in an embodiment of the present application may include steps 101 to 104, and these steps will be described in detail below.

[0056] 101. Obtain the operating conditions of the transformer and the voltage injection strategy.

[0057] In one embodiment, referring to Figure 2 the connection schematic diagram of the transient voltage transfer characteristics of the voltage regulating lead shown, wherein the oil supply system of the transformer is composed of a main tank 1 and a secondary tank 2. Select one of the oil-oil bushings H0 to H4 connecting the split tap changer selection part and the switching part as the connection point (for example, here Figure 2 H2 is used as the connection point of the connecting bushing). The voltage regulating lead 6 is the connecting wire of the voltage regulating coil 5 connecting the terminal board 2 and the switch selection part, and each oil-oil bushing is arranged on the terminal board 2. Terminals 1.1 and 1.2 are respectively the two terminals of the transformer network side winding 4, and terminals 2.1 and 2.2 are the two terminals of the transformer valve side winding.

[0058] For the convenience of measuring the voltage regulating lead 4, according to the connection relationship between the voltage regulating lead 4 and the oil-oil bushing, with reference to Figure 3 as shown, a 35 mm insulated copper stranded wire 7 is led out from the terminal board H2 end connecting the selector part and the switching part of the split type tap-changer to the manhole of the auxiliary oil tank body 5 of the switch, and is fixed by the connecting sleeve 8, so as to be convenient for connecting with equipment such as a transient recorder. Among them, with reference to 2 as shown, terminal 1.3 is the connecting sleeve. Figure 2 as shown, terminal 1.3 is the connecting sleeve.

[0059] In some possible implementations, the operating conditions of the transformer and the corresponding voltage injection strategy can be obtained through the terminal device of a computer connected to devices such as a transient recorder, a power analyzer, an impulse generator, and a generator. At the same time, the terminal device is also responsible for controlling various measuring devices and acquiring data. The operating conditions here can be conditions such as the transformer being no-load, performing an impulse operation on the valve side, and performing an impulse operation on the grid side. By controlling the above devices in the test system under each condition through the terminal device, the injection of multiple voltage values indicated by the voltage injection strategy is realized.

[0060] It can be understood that the transformer used in the test can be a converter transformer, a flexible DC transformer, a on-load tap-changing AC transformer, etc., which is not limited here.

[0061] 102. Control the target voltage injection device to sequentially inject multiple voltage values into the target terminal of the transformer according to the multiple voltage values and injection sequence indicated by the voltage injection strategy. The target voltage injection device is the voltage injection device corresponding to the operating condition, the target terminal is the voltage injection terminal of the transformer under the operating condition, and the voltage injection terminal is one or both of the valve side and grid side terminals of the transformer.

[0062] Specifically, on the basis of the terminal device obtaining the operating condition and the voltage injection strategy, control the target voltage injection device such as a generator, an impulse generator, etc. in the test system corresponding to the operating condition to inject the corresponding voltage from the corresponding voltage injection terminal according to the voltage value indicated by the voltage injection strategy.

[0063] 103. During the injection process of each voltage value, control the split type tap-changer to switch to the target gear indicated by the switch switching strategy.

[0064] In one embodiment, since it is to verify the performance of the split type tap-changer under transient conditions (here, the transient refers to the intermediate process when the circuit transitions from one stable state to another during the switch operation), during the voltage injection process, it is necessary to control the gear of the split type tap-changer to switch from the current gear to the target gear indicated by the switch switching strategy, so as to facilitate the measurement of the voltage value of the measurement terminal under transient conditions.

[0065] It is understandable that those skilled in the art can adjust the content of the switch switching strategy as needed to achieve different gear adjustments, which will not be restricted herein.

[0066] 104. Verify the characteristics of the voltage regulating lead according to the comparison result data of the voltage measurement value and the voltage simulation value of the measurement terminal at the target gear. The voltage measurement value is the measurement value corresponding to each voltage value, the voltage simulation value is the simulation calculation value of each voltage value, the measurement terminal is the connecting sleeve connected to the terminal board of the split tap changer, the connecting sleeve is arranged at the inlet of the secondary oil tank of the transformer, the terminal board is used to connect the switch selection part and the switch switching part of the split tap changer, and the voltage regulating lead is the connecting wire connecting the terminal board and the voltage regulating coil of the switch selection part.

[0067] Based on obtaining each voltage measurement value from the measurement terminal, by comparing each voltage measurement value with a corresponding voltage simulation value, and judging according to the comparison result data such as the degree of difference, verify whether the design of the voltage regulating lead is reliable. The voltage simulation value is the corresponding voltage value obtained from the measurement terminal by inputting the same voltage value in the simulation environment of the terminal device (a simulation test system with the same operating conditions).

[0068] This method for verifying the characteristics of the voltage regulating lead leads out a stranded insulated copper wire from one end of the terminal board connecting the switch selection part and the switching part of the split tap changer to the manhole of the switch oil tank as the measurement terminal to measure the transient characteristics of the voltage regulating lead in oil, which not only verifies the reliability of the product design but also provides a reliable reference for the transformer parameter design of the split tap changer.

[0069] In one embodiment, to make the obtained comparison result data more accurate and reliable, step 104 above, verifying the characteristics of the voltage regulating lead according to the comparison result data of the voltage measurement value and the voltage simulation value of the measurement terminal at the target gear, may specifically include:

[0070] If the comparison result data is within the preset deviation range, it is determined that the voltage regulating lead meets the design requirements; otherwise, it is determined that the voltage regulating lead does not meet the design requirements.

[0071] Specifically, the preset deviation range can be compared with the difference between the voltage measurement value and the corresponding voltage simulation value according to the design requirements of the voltage regulating lead. When the difference is within the preset deviation range, it can be determined that the design requirements are met; on the contrary, when the difference exceeds the preset deviation range, it can be judged that the design requirements are not met and the parameters need to be adjusted accordingly.

[0072] Taking the operating condition of performing an impact operation on the grid side as an example, refer to Figure 9The figure shows the schematic diagram of the test for the impact operation on the grid side. The impact generator inputs the corresponding voltage through the grid-side terminal 1.1 of the transformer, and the two valve-side terminals 2.1 and 2.2 of the transformer are grounded. The transient recorder records the voltage of the measurement terminal 1.3 through the voltage divider 2. Taking the split-type tap-changer position at 27 as an example, the measurement results are shown in the following table:

[0073]

[0074] Among them, when a voltage of 75 kV is applied to the grid-side terminal 1.1 (as shown in the upper part in the reference Figure 10 ), the voltage regulation is at the 27th gear, and the transient voltage test value of the voltage regulation lead is 2.471 kV (as shown in the lower part in the reference Figure 10 ), and the simulation calculation result is about 2.32 kV (as shown in the waveform diagram in the reference Figure 11 ). Among them, the above voltage values are all values at the moment of gear switching. It can be seen that the test value is close to the simulation calculation value, verifying the reliability of the design boundary.

[0075] When a voltage of 105.5 kV is applied to the grid-side terminal 1.1 (as shown in the upper part in the reference Figure 12 ), the voltage regulation is at the 27th gear, and the transient test voltage of the voltage regulation lead is 3.463 kV (as shown in the lower part in the reference Figure 12 ), and the simulation calculation result is about 3.22 kV (as shown in the reference Figure 13 ). Among them, the above voltage values are all values at the moment of gear switching. It can be seen that the test value is close to the simulation calculation value, indicating that the design boundary is relatively reliable and can be used.

[0076] When a voltage of 150.3 kV is applied to the grid-side terminal 1.1 (as shown in the upper part in the reference Figure 14 ), the voltage regulation is at the 27th gear, and the transient voltage of the voltage regulation lead is 4.778 kV (as shown in the lower part in the reference Figure 14 ), and the simulation calculation result is about 4.61 kV (as shown in the reference Figure 15 ). Among them, the above voltage values are all values at the moment of gear switching. The test value is close to the simulation calculation value, verifying the reliability of the design boundary.

[0077] It can be understood that those skilled in the art can adjust the quantity of the voltage measurement value and the voltage simulation value as needed, which is not limited here.

[0078] In addition, to further improve the accuracy of the verification results, when verifying the characteristics of the voltage regulating lead according to the comparison result data of the measured voltage value and the simulated voltage value of the measurement terminal at the target gear, in addition to verifying the characteristics of the voltage regulating lead according to the comparison result data of the instantaneous voltage measurement value and the instantaneous voltage simulation value of the measurement terminal at the switching moment when switching to the target gear. That is, the verification is carried out according to the voltage measurement at the switching moment and the corresponding simulated voltage value as shown in the above embodiments.

[0079] The characteristics of the voltage regulating lead can also be verified according to the comparison result data of the average voltage measurement value and the average voltage simulation value of the measurement terminal within a preset time period after switching to the target gear. The preset time period is the time period from the switching moment to the target moment, and the target moment is the moment when the target voltage value is first reached after switching to the target gear. The target voltage value is the stable voltage value after switching to the target gear.

[0080] For example, as shown in the above embodiments, the average value of the voltage measurement values in the time period from 0 to 200 us can be taken, and at the same time, the average value of the voltage simulation values in the time period from 0 to 200 us can be taken. Then, by comparing the two average values, a deviation value can be obtained, and the reliability of the design can be verified through this deviation value.

[0081] In some embodiments, to achieve step-by-step verification of reliability and improve the comprehensiveness of verification, controlling the target voltage injection device to sequentially inject a plurality of voltage values into the target terminal of the transformer according to a plurality of voltage values and injection sequences indicated by the voltage injection strategy includes:

[0082] Injecting the plurality of voltage values into the target terminal in ascending order.

[0083] Specifically, referring to the test process shown in the above table when the operating condition is an impact operation on the grid side, the voltage input to terminal 1.1 gradually increases, and this increase method is a step-by-step increase, that is, the difference between adjacent voltage values is the same. Of course, different increase methods can also be set according to needs for voltage injection, which will not be elaborated here.

[0084] In other embodiments, when the operating condition is no-load operation, controlling the target voltage injection device to sequentially inject a plurality of voltage values into the target terminal of the transformer according to a plurality of voltage values and injection sequences indicated by the voltage injection strategy includes:

[0085] Controlling the target power generation equipment to sequentially inject a plurality of voltage values into the two terminals on the valve side of the transformer according to a plurality of voltage values and injection sequences indicated by the voltage injection strategy.

[0086] Specifically, referring to Figure 4The experimental schematic diagram under no-load condition shown supplies power to the intermediate transformer through a power frequency generator, and then applies a single-phase voltage to the valve side winding of the converter transformer. The valve side terminal 2.1 is the live wire, and the valve side terminal 2.2 is grounded. The voltage transformer PT and the current transformer CT respectively measure the applied voltage and current. The grid side terminal 1.1 is left floating, and the grid side terminal 1.2 is grounded. The grid side measuring terminal 1.3 is connected to a voltage divider to measure the voltage value and waveform at the test terminal 1.3. Under no-load condition, with the valve side winding energized and the starting switch position at the 26th tap, during the process of switching the switch position from the 26th tap to the 27th tap and from the 26th tap to the 25th tap respectively, the waveforms and voltages at the test tap 1.3 are measured as shown in the following table:

[0087]

[0088] Among them, referring to Figure 5 The waveform diagram during the process of switch position 26 - 27 is shown as Figure 6 The waveform diagram during the process of switch position 26 - 25 is shown as

[0089] In addition, when the operating condition is to perform an impact operation on the valve side, the above control target voltage injection device injects a plurality of voltage values into the target terminal of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy, including:

[0090] Controlling the first target impact generating device to inject a plurality of voltage values into one terminal of the valve side of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

[0091] Specifically, referring to the schematic diagram shown in Figure 7 A 10% switching impulse voltage (negative polarity, maximum amplitude ≤ 250 kV, according to 10% SI = 155 kV) is applied to the valve side terminal 2.1. The grid side terminal 1.1 is left floating. The impact waveforms and voltages at the valve side 2.1, the grid side 1.1, and the test tap 1.3 are measured. The measurement results are shown in the following table:

[0092]

[0093] The specific waveform diagram is referred to Figure 8 shown. The upper part is the voltage waveform diagram of the terminal 2.1, the middle part is the voltage waveform diagram of the terminal 1.1, and the lower part is the voltage value of the terminal 1.3.

[0094] There are also corresponding voltage simulation values under the above two operating conditions. By comparing the voltage measurement value at the measurement terminal 1.3 with the corresponding voltage measurement value, the design reliability is judged.

[0095] Meanwhile, when the operating condition is an impact operation on the grid side, the control target voltage injection device injects a plurality of voltage values into the target terminal of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy, including:

[0096] Control the second target impact generating device to inject a plurality of voltage values into one terminal of the grid side of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy. The specific implementation process can refer to the reliability verification process under the operating condition of the impact operation on the grid side described in the above embodiment, which will not be elaborated here.

[0097] The above introduces a method for verifying the characteristics of a voltage regulating lead provided by an embodiment of the present application. Next, a device for performing the above method for verifying the characteristics of a voltage regulating lead will be introduced.

[0098] Please refer to Figure 16 , Figure 16 which is a schematic structural diagram of a device for verifying the characteristics of a voltage regulating lead provided by an embodiment of the present application. As Figure 16 shown, the device for verifying the characteristics of a voltage regulating lead includes:

[0099] A test information acquisition module 1601, configured to acquire the operating condition of the transformer and the voltage injection strategy.

[0100] A test voltage injection module 1602, configured to control the target voltage injection device to inject a plurality of voltage values into the target terminal of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy. The target voltage injection device is the voltage injection device corresponding to the operating condition, the target terminal is the voltage injection terminal of the transformer under the operating condition, and the voltage injection terminal is one or both of the valve side and grid side terminals of the transformer.

[0101] A test tap changing module 1603, configured to control the split tap changer to switch to the target tap indicated by the tap changing strategy during the injection process of each voltage value. And,

[0102] A test result verification module 1604, configured to verify the characteristics of the voltage regulating lead according to the comparison result data between the voltage measurement value and the voltage simulation value at the measurement terminal under the target tap. The voltage measurement value is the measurement value corresponding to each voltage value, the voltage simulation value is the simulation calculation value of each voltage value, the measurement terminal is the connection bushing connected to the target bushing of the split tap changer, the connection bushing is arranged at the inlet of the secondary oil tank of the transformer, the target bushing is the bushing connecting the switch selection part and the switch changing part of the split tap changer, and the voltage regulating lead is the connecting wire of the voltage regulating coil connecting the target bushing and the switch selection part.

[0103] In a possible implementation, the process of the test result verification module 1604 verifying the characteristics of the voltage regulating lead according to the comparison result data of the measured voltage value and the simulated voltage value of the measurement terminal at the target gear position includes:

[0104] If the comparison result data is within the preset deviation range, it is determined that the voltage regulating lead meets the design requirements; otherwise, it is determined that the voltage regulating lead does not meet the design requirements.

[0105] In a possible implementation, the process of the test voltage injection module 1602 controlling the target voltage injection device to sequentially inject a plurality of voltage values into the target terminal of the transformer according to the plurality of voltage values and the injection sequence indicated by the voltage injection strategy includes:

[0106] The plurality of voltage values are sequentially injected into the target terminal in ascending order.

[0107] In a possible implementation, the process of the test result verification module 1604 verifying the characteristics of the voltage regulating lead according to the comparison result data of the measured voltage value and the simulated voltage value of the measurement terminal at the target gear position includes:

[0108] Verifying the characteristics of the voltage regulating lead according to the comparison result data of the instantaneous measured voltage value and the instantaneous simulated voltage value of the measurement terminal at the switching moment when switching to the target gear position; or,

[0109] Verifying the characteristics of the voltage regulating lead according to the comparison result data of the average measured voltage value and the average simulated voltage value of the measurement terminal within a preset duration after switching to the target gear position. The preset duration is the duration from the switching moment to the target moment, and the target moment is the moment when the target voltage value is first reached after switching to the target gear position, and the target voltage value is the stable voltage value after switching to the target gear position.

[0110] In a possible implementation, when the operating condition is no-load operation, the process of the test voltage injection module 1602 controlling the target voltage injection device to sequentially inject a plurality of voltage values into the target terminal of the transformer according to the plurality of voltage values and the injection sequence indicated by the voltage injection strategy includes:

[0111] Controlling the target power generation equipment to sequentially inject a plurality of voltage values into the two terminals on the valve side of the transformer according to the plurality of voltage values and the injection sequence indicated by the voltage injection strategy.

[0112] In a possible implementation, when the operating condition is an impact operation on the valve side, the process of the test voltage injection module 1602 controlling the target voltage injection device to sequentially inject a plurality of voltage values into the target terminal of the transformer according to the plurality of voltage values and the injection sequence indicated by the voltage injection strategy includes:

[0113] Control the first target impact generating device to sequentially inject a plurality of voltage values into a terminal on the valve side of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

[0114] In a possible implementation, when the operating condition is to perform an impact operation on the grid side, the process of the test voltage injection module 1602 controlling the target voltage injection device to sequentially inject a plurality of voltage values into the target terminal of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy includes:

[0115] Control the second target impact generating device to sequentially inject a plurality of voltage values into a terminal on the grid side of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

[0116] An embodiment of the present application also provides an electronic device. Refer to Figure 17 As shown, it shows a schematic structural diagram of an electronic device suitable for implementing the electronic device in the embodiment of the present application. The electronic device in the embodiment of the present application may include, but is not limited to, fixed terminals such as mobile phones, laptop computers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), desktop computers, and the like. Figure 17 The electronic device shown is only an example and should not impose any limitations on the functions and usage scope of the embodiment of the present application.

[0117] As Figure 6 shown, the electronic device may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 1701, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 1702 or the program loaded from the storage device 1708 into the random access memory (RAM) 1703. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 1703. The processing device 1701, the ROM 1702, and the RAM 1703 are connected to each other through a bus 1704. The input / output (I / O) interface 1705 is also connected to the bus 1704.

[0118] Generally, the following devices may be connected to the I / O interface 1705: an input device 1706 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 1707 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 1708 including, for example, a memory card, a hard disk, etc.; and a communication device 1709. The communication device 1709 can allow the electronic device to communicate with other devices wirelessly or wiredly to exchange data. Although Figure 17 shown is an electronic device having various devices, it should be understood that it is not required to implement or have all the shown devices. More or fewer devices may be alternatively implemented or had.

[0119] In an embodiment of the present application, there is also provided a computer program product including computer-readable instructions. When the computer-readable instructions run on an electronic device, the electronic device is enabled to implement any one of the voltage regulating lead characteristic verification methods provided by the embodiments of the present application.

[0120] In an embodiment of the present application, there is also provided a computer-readable storage medium. The storage medium carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device is enabled to implement any one of the voltage regulating lead characteristic verification methods provided by the embodiments of the present application.

[0121] In addition, it should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the device embodiments provided in the present application, the connection relationships between the modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines.

[0122] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by means of dedicated hardware including application-specific integrated circuits, dedicated CPUs, dedicated memories, dedicated components, etc. Generally, functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structures for implementing the same function can also be various, such as analog circuits, digital circuits or dedicated circuits. However, for the present application, in more cases, software program implementation is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a readable storage medium, such as a floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk or optical disc of a computer, and includes several instructions to enable a computer device (which can be a personal computer, training device, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0123] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product.

[0124] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or a data center that includes one or more integrated available media. The available medium may be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

Claims

1. A method for verifying the characteristics of a voltage regulating lead wire, which is applied to a transformer equipped with a split type tap changer, is characterized in that, Including: Obtaining the operating condition of the transformer and the voltage injection strategy; Controlling the target voltage injection device to sequentially inject a plurality of the voltage values into the target terminal of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy, where the target voltage injection device is the voltage injection device corresponding to the operating condition, the target terminal is the voltage injection terminal of the transformer under the operating condition, and the voltage injection terminal is one or both of the valve side and network side terminals of the transformer; During the injection process of each of the voltage values, controlling the split tap changer to switch to the target gear position indicated by the switch switching strategy; Verifying the characteristics of the voltage regulating lead according to the comparison result data of the voltage measurement value and the voltage simulation value of the measurement terminal at the target gear position, where the voltage measurement value is the measurement value corresponding to each of the voltage values, the voltage simulation value is the simulation calculation value of each of the voltage values, the measurement terminal is the connecting bushing connected to the terminal board of the split tap changer, the connecting bushing is arranged at the entrance of the auxiliary oil tank of the transformer, the terminal board is used to connect the switch selection part and the switch switching part of the split tap changer, and the voltage regulating lead is the connecting wire of the voltage regulating coil connecting the terminal board and the switch selection part.

2. The method for verifying the characteristics of the voltage regulating lead according to claim 1, wherein The verifying the characteristics of the voltage regulating lead according to the comparison result data of the voltage measurement value and the voltage simulation value of the measurement terminal at the target gear position includes: If the comparison result data is within the preset deviation range, determining that the voltage regulating lead meets the design requirements; otherwise, determining that the voltage regulating lead does not meet the design requirements.

3. The method for verifying the characteristics of the voltage regulating lead according to claim 1, characterized in that The controlling the target voltage injection device to sequentially inject a plurality of the voltage values into the target terminal of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy includes: Injecting the plurality of voltage values into the target terminal in ascending order.

4. The method for verifying the characteristics of the voltage regulating lead according to claim 1, characterized in that, The verifying the characteristics of the voltage regulating lead according to the comparison result data of the voltage measurement value and the voltage simulation value of the measurement terminal at the target gear position includes: Verifying the characteristics of the voltage regulating lead according to the comparison result data of the instantaneous voltage measurement value and the instantaneous voltage simulation value of the measurement terminal at the switching moment when switching to the target gear position; or, Verifying the characteristics of the voltage regulating lead according to the comparison result data of the average voltage measurement value and the average voltage simulation value of the measurement terminal within a preset time period after switching to the target gear position, where the preset time period is the time period from the switching moment to the target moment, and the target moment is the moment when the target voltage value is first reached after switching to the target gear position, and the target voltage value is the stable voltage value after switching to the target gear position.

5. The method for verifying the characteristics of the voltage regulating lead according to any one of claims 1 to 4, characterized in that When the operating condition is no-load operation, the controlling the target voltage injection device to sequentially inject a plurality of the voltage values into the target terminal of the transformer according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy includes: Control the target power generation equipment to inject a plurality of voltage values into the two terminals on the valve side of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

6. The method for verifying the characteristics of the voltage regulating lead according to any one of claims 1 to 4, characterized in that, When the operating condition is an impact operation on the valve side, the control target voltage injection device injects a plurality of voltage values into the target terminal of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy, including: Control the first target impact generating device to inject a plurality of voltage values into one terminal on the valve side of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

7. The method for verifying the characteristics of the voltage regulating lead according to any one of claims 1 to 4, characterized in that, When the operating condition is an impact operation on the grid side, the control target voltage injection device injects a plurality of voltage values into the target terminal of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy, including: Control the second target impact generating device to inject a plurality of voltage values into one terminal on the grid side of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy.

8. A device for verifying the characteristics of a voltage regulating lead, characterized in that, It includes: A test information acquisition module for acquiring the operating condition of the transformer and the voltage injection strategy; A test voltage injection module for controlling the target voltage injection device to inject a plurality of voltage values into the target terminal of the transformer in sequence according to the plurality of voltage values and injection sequence indicated by the voltage injection strategy. The target voltage injection device is the voltage injection device corresponding to the operating condition, the target terminal is the voltage injection terminal of the transformer under the operating condition, and the voltage injection terminal is one or both of the valve side and grid side terminals of the transformer; A test tap changing module for controlling the split tap changer to switch to the target tap indicated by the tap changing strategy during the injection process of each voltage value; And, A test result verification module for verifying the characteristics of the voltage regulating lead according to the comparison result data between the voltage measurement value and the voltage simulation value at the measurement terminal under the target tap. The voltage measurement value is the measurement value corresponding to each voltage value, the voltage simulation value is the simulation calculation value of each voltage value, the measurement terminal is the connecting bushing connected to the terminal board of the split tap changer, the connecting bushing is arranged at the inlet of the auxiliary oil tank of the transformer, the terminal board is used to connect the switch selection part and the switch changing part of the split tap changer, and the voltage regulating lead is the connecting wire of the voltage regulating coil connecting the terminal board and the switch selection part.

9. An electronic device, characterized in that, It includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer programs so that the electronic device can implement the voltage regulating lead characteristic verification method as described in any one of claims 1 to 7.

10. A computer storage medium, characterized in that, The storage medium carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, the electronic device can implement the voltage regulating lead characteristic verification method as described in any one of claims 1 to 7.

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