Circuit breaker loop resistance testing method, device, computer equipment and storage medium

Abstract

Embodiments of the present invention provide a circuit breaker loop resistance testing method, apparatus, computer equipment, and storage medium. The method includes: connecting the test lines connected to the first port of the circuit breaker to be a first test line and a second test line, and connecting the test lines connected to the second port of the circuit breaker to be a third test line and a fourth test line; determining the first current channel and the second current channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line; determining the first voltage channel and the second voltage channel of the circuit breaker from the four test lines based on the first current channel and the second current channel; inputting a test current into the first current channel to obtain the voltage difference between the first voltage channel and the second voltage channel as the test voltage; and calculating the loop resistance value based on the test current and the test voltage. Without distinguishing the test lines, a correct loop resistance test can be completed, and the test efficiency is high, the accuracy is good, and the operation is convenient.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of electrical testing, and in particular to a circuit breaker loop resistance testing method, apparatus, computer equipment, and storage medium. Background Art

[0002] According to the "Electric Power Equipment Maintenance Test Regulations (Q / CSG1206007-2017)", 10kV switchgear circuit breakers must be preventively tested every six years (three years for high-current switchgear). The test items include circuit breaker loop resistance tests.

[0003] Currently, loop resistance testers used in loop resistance tests have four test wires: a red current wire, a red voltage wire, a black current wire, and a black voltage wire. During testing, test wires of the same color must be connected to both sides of the circuit breaker, with the current wire connected outside the voltage wire. This is the only way to reflect the true resistance value of the circuit breaker's loop resistance. Each loop resistance test on a circuit breaker requires determining the color and type of the test wires, which is time-consuming and inefficient for large-scale circuit breaker loop resistance testing. Furthermore, incorrect wiring can easily lead to inaccurate circuit breaker loop resistance values, making it difficult to accurately reflect the circuit breaker's true condition and posing a safety hazard. Summary of the Invention

[0004] The embodiments of the present invention provide a circuit breaker loop resistance testing method, apparatus, computer equipment, and storage medium, so as to achieve accurate loop resistance testing without distinguishing test lines.

[0005] In a first aspect, an embodiment of the present invention provides a circuit breaker loop resistance testing method, comprising:

[0006] The test lines connected to the first port of the circuit breaker are the first test line and the second test line, and the test lines connected to the second port of the circuit breaker are the third test line and the fourth test line;

[0007] determining a first current channel and a second current channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line;

[0008] Determine a first voltage channel and a second voltage channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on the first current channel and the second current channel;

[0009] Inputting a test current into the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage;

[0010] The loop resistance is calculated based on the test current and the test voltage.

[0011] In a second aspect, an embodiment of the present invention further provides a circuit breaker loop resistance testing device, comprising:

[0012] an initialization module, configured to name the test lines connected to the first port of the circuit breaker as the first test line and the second test line, and to name the test lines connected to the second port of the circuit breaker as the third test line and the fourth test line;

[0013] a current channel determination module, configured to determine a first current channel and a second current channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line;

[0014] a voltage channel determination module, configured to determine a first voltage channel and a second voltage channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on the first current channel and the second current channel;

[0015] a test data acquisition module, configured to input a test current into the first current channel and obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage;

[0016] The loop resistance value calculation module is used to calculate the loop resistance value according to the test current and the test voltage.

[0017] In a third aspect, an embodiment of the present invention further provides a computer device, comprising:

[0018] one or more processors;

[0019] a memory for storing one or more programs,

[0020] When the one or more programs are executed by the one or more processors, the one or more processors implement the circuit breaker loop resistance testing method as described in the first aspect.

[0021] In a fourth aspect, an embodiment of the present invention further provides a circuit breaker loop resistance testing system, comprising: a test line, a controller, and a signal generator;

[0022] The first end of the test line is connected to the circuit breaker, the second end of the test line is connected to the output end of the signal generator, and the test line is used to send and receive electrical signals with the circuit breaker;

[0023] The output end of the controller is connected to the control end of the signal generator, and is used to generate instructions to control the type of electrical signal generated by the signal generator and the target test line to which the electrical signal reaches, wherein the type of electrical signal includes current signal and voltage signal;

[0024] The signal generator is used to generate the current signal or the voltage signal to the test line according to the instruction of the controller.

[0025] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the circuit breaker loop resistance testing method as described in the first aspect is implemented.

[0026] In this embodiment, the test lines connected to the first port of the circuit breaker are set as the first test line and the second test line, and the test lines connected to the second port of the circuit breaker are named the third test line and the fourth test line; the first current channel and the second current channel of the circuit breaker are determined from the first test line, the second test line, the third test line, and the fourth test line; based on the first current channel and the second current channel, the first voltage channel and the second voltage channel of the circuit breaker are determined from the first test line, the second test line, the third test line, and the fourth test line; a test current is input into the first current channel to obtain the voltage difference between the first voltage channel and the second voltage channel as the test voltage; and the loop resistance value is calculated based on the test current and the test voltage. Without distinguishing the test lines, the correct loop resistance test can be completed, and the test efficiency is high, the accuracy is good, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1a A flow chart of a circuit breaker loop resistance testing method provided in the first embodiment of the present invention;

[0028] Figure 1b A schematic diagram of transmitting a first judgment voltage signal to the first test line of the circuit breaker provided in the first embodiment of the present invention;

[0029] Figure 1c A schematic diagram of transmitting a first judgment voltage signal to the first test line of the circuit breaker provided in the first embodiment of the present invention;

[0030] Figure 1d A schematic diagram of transmitting a second judgment voltage signal to a first current channel provided by the first embodiment of the present invention;

[0031] Figure 1e A schematic diagram of inputting a preset test current into a first current channel provided in the first embodiment of the present invention;

[0032] Figure 2A schematic structural diagram of a circuit breaker loop resistance testing device provided in a second embodiment of the present invention;

[0033] Figure 3 A schematic structural diagram of a circuit breaker loop resistance testing device provided in a third embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the structure of a computer device provided in Example 4 of the present invention. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0036] Example 1

[0037] FIG1 is a flow chart of a circuit breaker loop resistance testing method provided in a first embodiment of the present invention. This embodiment is applicable to situations where accurate loop resistance testing can be performed without distinguishing test lines. The method can be performed by a circuit breaker loop resistance testing device. The circuit breaker loop resistance testing device can be implemented by software and / or hardware and can be configured in a computer device, etc. The method specifically includes the following steps:

[0038] Step 101: The test lines connected to the first port of the circuit breaker are the first test line and the second test line, and the test lines connected to the second port of the circuit breaker are the third test line and the fourth test line.

[0039] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. The function of a circuit breaker is to disconnect and connect load circuits and disconnect fault circuits, preventing accidents from escalating and ensuring safe operation.

[0040] Loop resistance is a parameter that indicates the quality of the conductive circuit connection. Each product type specifies a range of values. If the loop resistance exceeds the specified value, it is likely that a connection in the conductive circuit is poor. During high current operation, the local temperature rise at the poor contact point increases, and in severe cases, it can even trigger a vicious cycle that causes oxidation and burns. This requires particular attention for circuit breakers used in high current operation.

[0041] The circuit breaker loop resistance test system has four test lines, which are connected to both ends of the circuit breaker. The test line connected to the first port of the circuit breaker is set as the first test line and the second test line, and the test line connected to the other port of the circuit breaker, that is, the second port of the circuit breaker, is named the third test line and the fourth test line.

[0042] It should be noted that the two test lines at the same port can be named interchangeably. For example, the first test line at the first port of the circuit breaker can be any one of the two test lines at the first port, and the other can be the second test line. This is not limited in the embodiment of the present invention.

[0043] It should be noted that the provisions of the first test line, the second test line, the third test line, and the fourth test line are exemplary illustrations of an embodiment of the present invention, so as to facilitate the explanation of the circuit breaker loop resistance testing method. In other embodiments, they can also be replaced according to actual operating conditions, and the embodiment of the present invention does not limit them.

[0044] In some embodiments of the present invention, any port of the circuit breaker may serve as the first port.

[0045] The circuit breaker has two ports, and either port can be used as the first port. When one port is the first port, the other port is the second port.

[0046] It should be noted that the provision of the first port is an exemplary description of the embodiment of the present invention and is not limited to this embodiment of the present invention.

[0047] Step 102: Determine a first current channel and a second current channel of a circuit breaker from a first test line, a second test line, a third test line, and a fourth test line.

[0048] For example, in an embodiment of the present invention, a voltage signal is applied to a test line of one port, and then the voltage value of the test line of the other port is detected. Based on the voltage value of the test line of the other port, a first current channel is determined from the two test lines of the other port. A voltage signal is then applied to the first current channel, and the voltage value of the test line of the other port opposite the port to which the first current channel is connected is detected. Based on the voltage value of the test line of the other port, a second current channel is determined from the test line corresponding to the port. For example, a voltage signal is applied to the first test line of the first port, and then the voltage values ​​of the third and fourth test lines of the second port are detected. Based on the voltage values ​​of the third and fourth test lines, the first current channel is determined from the third and fourth test lines of the second port. A voltage signal is then applied to the first current channel, and the voltage values ​​of the test lines of the first port (i.e., the first and second test lines) are detected. Based on the voltage values ​​of the first and second test lines, a second current channel is determined from the first and second test lines. It should be noted that in other embodiments of the present invention, other methods may be used to determine the first and second current channels, for example, by applying a current signal, which will not be described in detail in this embodiment of the present invention. Determine the first current channel and the second current channel so that when calculating the loop resistance in subsequent tests, the test voltage can be injected into the corresponding current channel to generate the test current.

[0049] It should be noted that the first current channel and the second current channel are illustrative descriptions of the embodiment of the present invention, and there is no particular order, and the embodiment of the present invention does not limit this.

[0050] In some embodiments of the present invention, step 102 includes:

[0051] Step 1021: Transmit a first determination voltage signal to a first test line of a circuit breaker.

[0052] Figure 1b and Figure 1c These are schematic diagrams of transmitting a first judgment voltage signal to the first test line of the circuit breaker provided by the first embodiment of the present invention.

[0053] like Figure 1b or Figure 1c , transmit the first judgment voltage signal U1 to the first test line of the circuit breaker, so that the circuit breaker can be powered on, and each test line connected to the circuit breaker has voltage.

[0054] Step 1022: Acquire a third temporary voltage value of the third test line and a fourth temporary voltage value of the fourth test line.

[0055] The voltage value of the third test line on the second port side of the circuit breaker at this time is obtained as the third temporary voltage value. The voltage value of the fourth test line on the second port side of the circuit breaker at this time is obtained as the fourth temporary voltage value. The third temporary voltage value and the fourth temporary voltage value are used to subsequently determine the current channel and the voltage channel.

[0056] Step 1023: Determine a first minimum value of the third temporary voltage value and the fourth temporary voltage value.

[0057] The third temporary voltage value and the fourth temporary voltage value are compared, and the smaller value between the two is determined as the first minimum value.

[0058] For example, the third temporary voltage value is U T3 The fourth temporary voltage value is U T4 , in U T3 and U T4 After comparing, we get U T3 If the voltage value is smaller, the third temporary voltage value is U T3 as the first minimum value.

[0059] Step 1024: Use the test line corresponding to the first minimum value as the first current channel.

[0060] The test line corresponding to the first minimum value is determined and marked as the first current channel a, which is used for subsequently determining the second current channel and the voltage channel.

[0061] Step 1025: Transmit the second judgment voltage signal to the first current channel.

[0062] Figure 1d A schematic diagram of transmitting a second judgment voltage signal to a first current channel provided in the first embodiment of the present invention.

[0063] like Figure 1d As shown, the second judgment voltage signal U2 is transmitted to the first current channel a, so that the circuit breaker can be powered on, and each test line connected to the circuit breaker has a voltage.

[0064] It should be noted that Figure 1d A schematic diagram of transmitting a second judgment voltage signal to a first current channel is provided in an embodiment of the present invention. When the first current channel is a test line close to the inside of a circuit breaker, the second judgment voltage signal U2 is transmitted to the first current channel close to the inside of the circuit breaker. The present invention is for example only and is not limited thereto.

[0065] Step 1026: Obtain a first temporary voltage value of the first test line and a second temporary voltage value of the second test line.

[0066] The voltage value of the first test line on the first port side of the circuit breaker at this time is obtained as a first temporary voltage value. The voltage value of the second test line on the first port side of the circuit breaker at this time is obtained as a second temporary voltage value. The first temporary voltage value and the second temporary voltage value are used to determine the second current channel.

[0067] Step 1027: Determine a second minimum value of the first temporary voltage value and the second temporary voltage value.

[0068] The first temporary voltage value and the second temporary voltage value are compared, and the smaller value between the two is determined as the second minimum value.

[0069] For example, the first temporary voltage value is U T1 The second temporary voltage value is U T2 , in U T1 and U T2 After comparing, we get U T2 If the voltage value is smaller, the second temporary voltage value is U T2 as the second minimum value.

[0070] It should be noted that the first judgment voltage signal and the second judgment voltage signal are exemplary illustrations of the embodiment of the present invention. The values ​​of the first judgment voltage signal and the second judgment voltage signal may be the same or different, and the embodiment of the present invention does not limit this.

[0071] Step 1028: Use the test line corresponding to the minimum value as the second current channel.

[0072] The test line corresponding to the second minimum value is determined and marked as the second current channel b.

[0073] Step 103 : Determine a first voltage channel and a second voltage channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on the first current channel and the second current channel.

[0074] According to the determined first current channel and second current channel, a first voltage channel and a second voltage channel are determined from four test lines connected to the circuit breaker, namely, a first test line, a second test line, a third test line, and a fourth test line.

[0075] In some embodiments of the present invention, step 103 includes:

[0076] Step 1031: Use the test line on the same side of the circuit breaker and the first current channel as the first voltage channel.

[0077] Two test lines are connected to each side of the circuit breaker. On the same side, one of the two test lines must be a current channel and the other a voltage channel.

[0078] The other test line on the second port side of the circuit breaker together with the first current channel is used as the first voltage channel.

[0079] Exemplarily, if the third test line is determined to be the first current channel, then the fourth test line on the second port side of the circuit breaker is the first voltage channel.

[0080] Exemplarily, if the fourth test line is determined to be the first current channel, then the third test line on the second port side of the circuit breaker is the first voltage channel.

[0081] The embodiments of the present invention are only examples and are not limiting.

[0082] Step 1032: Use the test line on the same side of the circuit breaker and the second current channel as the second voltage channel.

[0083] Use the other test line on the first port side of the circuit breaker as the second current channel as the second voltage channel.

[0084] Exemplarily, if the first test line is determined to be the second current channel, then the second test line on the first port side of the circuit breaker is the second voltage channel.

[0085] Exemplarily, if the second test line is determined to be the second current channel, then the first test line on the first port side of the circuit breaker is the second voltage channel.

[0086] The embodiments of the present invention are only examples and are not limiting.

[0087] After the four test wires of the circuit breaker loop resistance test system are arbitrarily connected to the two ends of the circuit breaker, the current channel and voltage channel at the two ends of the circuit breaker are automatically identified in steps 102 and 103, and the circuit breaker loop resistance test can be directly performed without distinguishing the test wires.

[0088] Step 104 : Input a test current into the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage.

[0089] Input a test current into the first current channel, obtain the voltage value of the first voltage channel and the voltage value of the second voltage channel, calculate the voltage difference between the voltage value of the first voltage channel and the voltage value of the second voltage channel, and use the voltage difference as the test voltage corresponding to the test current.

[0090] It should be noted that inputting a test current into the first current channel to obtain the voltage difference between the first voltage channel and the second voltage channel as the test voltage is an exemplary illustration of an embodiment of the present invention. In other embodiments of the present invention, a test current can also be input into the second current channel to obtain the voltage difference between the first voltage channel and the second voltage channel as the test voltage.

[0091] In some embodiments of the present invention, step 104 includes:

[0092] Step 1041: Input a preset test current into the first current channel.

[0093] Figure 1e A schematic diagram of inputting a preset test current into a first current channel provided in the first embodiment of the present invention.

[0094] like Figure 1e As shown, a preset test current I is input into the first current channel a, the second current channel b serves as the negative pole of the current, and the test current flows out from the second current channel b. Figure 1e The dotted arrow in is the current direction of the test current I.

[0095] Step 1042: Obtain the voltage values ​​of the first voltage channel and the second voltage channel as the first test voltage and the second test voltage, respectively.

[0096] When a preset test current is input to the first current channel a and the second current channel b serves as the current negative pole, voltages are measured on the remaining two voltage test lines, and there is a voltage difference between the two voltage test lines.

[0097] The voltage values ​​of the first voltage channel and the second voltage channel are respectively obtained and determined as the first test voltage and the second test voltage respectively. The first test voltage and the second test voltage are used for subsequent calculation of the voltage difference between the two ports of the circuit breaker.

[0098] Step 1043: Subtract the second test voltage from the first test voltage to obtain a test voltage.

[0099] The voltage difference between the first and second voltage channels is obtained by subtracting the second test voltage from the first test voltage. This voltage difference is used as the test voltage. The test voltage is used to subsequently calculate the loop resistance of the circuit breaker.

[0100] Step 105: Calculate the loop resistance value according to the test current and the test voltage.

[0101] Calculate the loop circuit resistance using the corresponding formula based on the test current and test voltage.

[0102] In some embodiments of the present invention, step 105 includes:

[0103] Step 1051: Substitute the test current and test voltage into the DC step-down method formula to calculate the loop resistance. The DC step-down method formula is:

[0104]

[0105] Where R is the loop resistance, U is the test voltage shown, and I is the test current.

[0106] The formula for the DC step-down method is: R=U / I. Substitute the test voltage into U in the DC step-down formula and the test current into I in the formula. The value of R can be calculated by the DC step-down method, and the value of R is used as the resistance of the circuit breaker loop.

[0107] The present invention is only for example and not for limitation.

[0108] It should be noted that for the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0109] In this embodiment, the test lines connected to the first port of the circuit breaker are set as the first test line and the second test line, and the test lines connected to the second port of the circuit breaker are named the third test line and the fourth test line; based on the first judgment voltage signal and the second judgment voltage signal, the first current channel and the second current channel of the circuit breaker are determined from the first test line, the second test line, the third test line, and the fourth test line; based on the first current channel and the second current channel, the first voltage channel and the second voltage channel of the circuit breaker are determined from the first test line, the second test line, the third test line, and the fourth test line; a test current is input into the first current channel to obtain the voltage difference between the first voltage channel and the second voltage channel as the test voltage; and the loop resistance value is calculated based on the test current and the test voltage. By simply connecting the four test wires of the circuit breaker loop resistance test system to either end of the circuit breaker, the voltage channel and current channel of the ports on both sides of the circuit breaker can be automatically determined. Without distinguishing the test wires, a correct loop resistance test can be completed, with good accuracy and easy operation. In addition, the circuit breaker loop resistance test method of the embodiment of the present invention has high test efficiency. Especially when performing a large number of circuit breaker loop resistance tests, the advantage of high test efficiency of the embodiment of the present invention is more prominent.

[0110] Example 2

[0111] Figure 2 This is a structural block diagram of a circuit breaker loop resistance testing device provided in the second embodiment of the present invention, which may specifically include the following modules:

[0112] An initialization module 201 is configured to name the test lines connected to the first port of the circuit breaker as the first test line and the second test line, and to name the test lines connected to the second port of the circuit breaker as the third test line and the fourth test line;

[0113] In some embodiments of the present invention, any port of the circuit breaker in the initialization module 201 can serve as the first port.

[0114] a current channel determination module 202, configured to determine a first current channel and a second current channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on a first judgment voltage signal and a second judgment voltage signal;

[0115] In some embodiments of the present invention, the current channel determination module 202 includes:

[0116] a first judgment voltage signal transmission submodule, configured to transmit a first judgment voltage signal to the first test line of the circuit breaker;

[0117] a first temporary voltage value acquiring submodule, configured to acquire a third temporary voltage value of the third test line and a fourth temporary voltage value of the fourth test line;

[0118] a first minimum value determining submodule, configured to determine a first minimum value between the third temporary voltage value and the fourth temporary voltage value;

[0119] a first current channel determining submodule, configured to use the test line corresponding to the first minimum value as the first current channel;

[0120] a second judgment voltage signal transmission submodule, configured to transmit a second judgment voltage signal to the first current channel;

[0121] A second temporary voltage value acquisition submodule, configured to acquire a first temporary voltage value of the first test line and a second temporary voltage value of the second test line;

[0122] a second minimum value determining submodule, configured to determine a second minimum value between the first temporary voltage value and the second temporary voltage value;

[0123] The second current channel determination submodule is configured to use the test line corresponding to the second minimum value as the second current channel.

[0124] a voltage channel determining module 203, configured to determine a first voltage channel and a second voltage channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on the first current channel and the second current channel;

[0125] In some embodiments of the present invention, the voltage channel determination module 203 includes:

[0126] a first voltage channel determination submodule, configured to use the test line on the same side of the circuit breaker and the first current channel as the first voltage channel;

[0127] The second voltage channel determination submodule is configured to use the test line on the same side of the circuit breaker and the second current channel as the second voltage channel.

[0128] a test data acquisition module 204, configured to input a test current into the first current channel and obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage;

[0129] In some embodiments of the present invention, the test data acquisition module 204 includes:

[0130] a test current input submodule, configured to input the preset test current into the first current channel;

[0131] a voltage value acquisition submodule, configured to acquire the voltage values ​​of the first voltage channel and the second voltage channel as a first test voltage and a second test voltage, respectively;

[0132] The test voltage calculation submodule is configured to obtain the test voltage by subtracting the second test voltage from the first test voltage.

[0133] The loop resistance value calculation module 205 is configured to calculate the loop resistance value according to the test current and the test voltage.

[0134] In some embodiments of the present invention, the loop resistance calculation module 205 includes:

[0135] The loop resistance calculation submodule is used to substitute the test current and the test voltage into the DC step-down method formula to calculate the loop resistance value, wherein the DC step-down method formula is:

[0136]

[0137] Wherein, R is the loop resistance, U is the test voltage, and I is the test current.

[0138] The circuit breaker loop resistance testing device provided in the embodiment of the present invention can execute the circuit breaker loop resistance testing method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0139] Example 3

[0140] Figure 3 This is a structural diagram of a circuit breaker loop resistance test system provided in the third embodiment of the present invention, which may specifically include the following devices: a test line 301, a controller 302, and a signal generator 303;

[0141] A first end of the test line 301 is connected to the circuit breaker, and a second end of the test line 301 is connected to an output end of the signal generator 303 . The test line 301 is used to transmit and receive electrical signals with the circuit breaker.

[0142] The output end of the controller 302 is connected to the control end of the signal generator 303 and is used to generate instructions to control the type of electrical signal generated by the signal generator 303 and the target test line 301 to which the electrical signal reaches. The types of electrical signals include current signals and voltage signals.

[0143] The signal generator 303 is used to generate a current signal or a voltage signal to the test line 301 according to the instruction of the controller 302 .

[0144] In order to enable those skilled in the art to better understand the embodiments of the present application, an example of the structure of a circuit breaker loop resistance testing system is described in this specification.

[0145] Exemplarily, the test lines 301 include a first test line 301, a second test line 301, a third test line 301, and a fourth test line 301. The first ends of these four test lines 301 are connected to the circuit breaker, and the second ends are connected to the output end of the signal generator 303. These four test lines 301 are used to send and receive signals with the circuit breaker. Specifically, the first ends of the first test line 301 and the second test line 301 are connected to the first end of the circuit breaker, and the first ends of the third test line 301 and the fourth test line 301 are connected to the second end of the circuit breaker.

[0146] The output terminal of controller 302 is connected to the control terminal of signal generator 303 and is used to generate instructions to control the type of electrical signal generated by signal generator 303. Electrical signal types include voltage signals and current signals. Controller 302 is also used to control the transmission of the electrical signal generated by signal generator 303 to the target test line 301 to meet the requirements for identifying current channels, voltage channels, and testing loop resistance. For example, if controller 302 generates an instruction to control signal generator 303 to send a voltage signal to the fourth test line 301, signal generator 303 will send the voltage signal to the fourth test line 301 according to the instruction.

[0147] The circuit breaker loop resistance testing system provided by the embodiment of the present invention can execute the circuit breaker loop resistance testing method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0148] Example 4

[0149] Figure 4 A schematic diagram of the structure of a computer device provided in Example 4 of the present invention. Figure 4 A block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention is shown. Figure 4 The computer device 12 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0150] like Figure 4 As shown, computer device 12 is implemented as a general-purpose computing device. Components of computer device 12 may include, but are not limited to, one or more processors or processing units 16, system memory 28, and a bus 18 that connects various system components (including system memory 28 and processing unit 16).

[0151] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. Examples of these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0152] The computer device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the computer device 12, including volatile and non-volatile media, removable and non-removable media.

[0153] System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. Computer device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be configured to read and write non-removable, non-volatile magnetic media ( Figure 4 Not shown, often called a "hard drive"). Although Figure 4 Not shown, a magnetic disk drive for reading and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.

[0154] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may include an implementation of a network environment. Program modules 42 generally implement the functions and / or methods of the embodiments described herein.

[0155] The computer device 12 can also communicate with one or more external devices 14 (e.g., a keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with the computer device 12, and / or any device that enables the computer device 12 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication can occur via an input / output (I / O) interface 22. Furthermore, the computer device 12 can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter 20. As shown, the network adapter 20 communicates with the other modules of the computer device 12 via a bus 18. It should be understood that, although not shown, other hardware and / or software modules can be used in conjunction with the computer device 12, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0156] The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, such as implementing the circuit breaker loop resistance testing method provided by the embodiment of the present invention.

[0157] Example 5

[0158] Embodiment 5 of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned circuit breaker loop resistance testing method are implemented, and the same technical effects can be achieved. To avoid repetition, they are not described here.

[0159] Among them, computer-readable storage media can include, for example, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or components, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or device.

[0160] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A circuit breaker loop resistance testing method, characterized in that: include: The test lines connected to the first port of the circuit breaker are the first test line and the second test line, and the test lines connected to the second port of the circuit breaker are the third test line and the fourth test line; determining a first current channel and a second current channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line; Determine a first voltage channel and a second voltage channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on the first current channel and the second current channel; Inputting a test current into the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage; Calculate the loop resistance value according to the test current and the test voltage; The determining the first current channel and the second current channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line includes: transmitting a first determination voltage signal to the first test line of the circuit breaker; acquiring a third temporary voltage value of the third test line and a fourth temporary voltage value of the fourth test line; determining a first minimum value between the third temporary voltage value and the fourth temporary voltage value; using the test line corresponding to the first minimum value as the first current channel; transmitting a second judgment voltage signal to the first current channel; Acquire a first temporary voltage value of the first test line and a second temporary voltage value of the second test line; determining a second minimum value of the first temporary voltage value and the second temporary voltage value; The test line corresponding to the second minimum value is used as the second current channel.

2. The method according to claim 1, characterized in that Any port of the circuit breaker can serve as the first port.

3. The method according to claim 2, characterized in that The determining the first voltage channel and the second voltage channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on the first current channel and the second current channel includes: Using the test line on the same side of the circuit breaker and the first current channel as the first voltage channel; The test line on the same side of the circuit breaker and the second current channel is used as the second voltage channel.

4. The method according to claim 1, wherein Inputting a test current into the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage includes: inputting the preset test current into the first current channel; Obtaining voltage values ​​of the first voltage channel and the second voltage channel as a first test voltage and a second test voltage, respectively; The test voltage is obtained by subtracting the second test voltage from the first test voltage.

5. The method according to claim 1, wherein Calculating the loop resistance value according to the test current and the test voltage includes: Substitute the test current and the test voltage into the DC step-down method formula to calculate the loop resistance value, wherein the DC step-down method formula is: Wherein, R is the loop resistance, U is the test voltage, and I is the test current.

6. A circuit breaker loop resistance testing device, used to perform the circuit breaker loop resistance testing method according to any one of claims 1 to 5, characterized in that: include: an initialization module, configured to name the test lines connected to the first port of the circuit breaker as the first test line and the second test line, and to name the test lines connected to the second port of the circuit breaker as the third test line and the fourth test line; a current channel determination module, configured to determine a first current channel and a second current channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line; a voltage channel determination module, configured to determine a first voltage channel and a second voltage channel of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line based on the first current channel and the second current channel; a test data acquisition module, configured to input a test current into the first current channel and obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage; The loop resistance value calculation module is used to calculate the loop resistance value according to the test current and the test voltage.

7. A circuit breaker loop resistance testing system, configured to execute the circuit breaker loop resistance testing method according to any one of claims 1 to 5, characterized in that: include: Test leads, controllers, signal generators; The first end of the test line is connected to the circuit breaker, the second end of the test line is connected to the output end of the signal generator, and the test line is used to send and receive electrical signals with the circuit breaker; The output end of the controller is connected to the control end of the signal generator, and is used to generate instructions to control the type of electrical signal generated by the signal generator and the target test line to which the electrical signal reaches, wherein the type of electrical signal includes current signal and voltage signal; The signal generator is used to generate the current signal or the voltage signal to the test line according to the instruction of the controller.

8. A computer device, characterized in that: The computer device comprises: one or more processors; a memory for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the circuit breaker loop resistance testing method according to any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the circuit breaker loop resistance testing method according to any one of claims 1 to 5 is implemented.

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