CN114545085A - Circuit breaker loop resistance testing method and device, computer equipment and storage medium - Google Patents

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

Info

Publication number
CN114545085A
CN114545085A CN202210053272.2A CN202210053272A CN114545085A CN 114545085 A CN114545085 A CN 114545085A CN 202210053272 A CN202210053272 A CN 202210053272A CN 114545085 A CN114545085 A CN 114545085A
Authority
CN
China
Prior art keywords
test
voltage
test line
current
circuit breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210053272.2A
Other languages
Chinese (zh)
Inventor
刘远鹤
黄晓波
巫小彬
马志学
张云
马杰聪
蔡建峰
黄育龙
钟继萌
王丽青
张晓竹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202210053272.2A priority Critical patent/CN114545085A/en
Publication of CN114545085A publication Critical patent/CN114545085A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/08—Measuring resistance by measuring both voltage and current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272—Apparatus, systems or circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The embodiment of the invention provides a method and a device for testing circuit breaker loop resistance, computer equipment and a storage medium, wherein the method comprises the following steps: the test lines connected with the first port of the circuit breaker are a first test line and a second test line, and the test lines connected with the second port of the circuit breaker are a third test line and a 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; determining a first voltage channel and a 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 to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage; and calculating the resistance value of the loop resistor according to the test current and the test voltage. The correct loop resistance test can be completed without distinguishing test wires, and the test efficiency is high, the accuracy is good, and the operation is convenient.

Description

Circuit breaker loop resistance testing method and device, computer equipment and storage medium
Technical Field
The embodiment of the invention relates to the technical field of electrical tests, in particular to a method and a device for testing circuit breaker loop resistance, computer equipment and a storage medium.
Background
According to the electric power equipment overhaul test regulation (Q/CSG1206007-2017), a 10kV switch cabinet circuit breaker is required to be subjected to preventive tests every six years (three years for a high-current switch cabinet), and test items comprise a circuit breaker loop resistance test.
The test line of the loop resistance tester that present loop resistance test adopted is total 4 lines to constitute, is a red current line, a red voltage line, a black current line, a black voltage line respectively, and during the test, the test line that need with the same colour inserts the both sides of circuit breaker to the current line needs to connect in the outside on voltage line, and such true resistance value that just can reflect the loop resistance of circuit breaker. When a circuit breaker is subjected to a circuit resistance test, the color and the type of a test line need to be judged, a large amount of time needs to be consumed, and the efficiency is low when the circuit breaker is subjected to a large-scale circuit resistance test; and the circuit breaker loop resistance value obtained by testing is low in accuracy due to the fact that a wrong circuit is connected easily, the real situation of the circuit breaker is difficult to reflect correctly, and potential safety hazards are caused.
Disclosure of Invention
The embodiment of the invention provides a circuit breaker loop resistance testing method, a circuit breaker loop resistance testing device, computer equipment and a storage medium, so that accurate loop resistance testing can be completed without distinguishing test lines.
In a first aspect, an embodiment of the present invention provides a circuit breaker loop resistance testing method, including:
the test lines connected with the first port of the circuit breaker are a first test line and a second test line, and the test lines connected with the second port of the circuit breaker are a third test line and a 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;
determining 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 on the basis of the first current channel and the second current channel;
inputting a test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage;
and calculating to obtain the resistance value of the loop resistor according to the test current and the test voltage.
In a second aspect, an embodiment of the present invention further provides a circuit breaker loop resistance testing apparatus, including:
the initialization module is used for naming the test lines connected to the first port of the circuit breaker as a first test line and a second test line, and naming the test lines connected to the second port of the circuit breaker as a third test line and a fourth test line;
the current channel determining module is used for 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;
the voltage channel determining module is used for determining 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;
the test data acquisition module is used for inputting test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as test voltage;
and the loop resistance value calculation module is used for calculating the loop resistance value according to the test current and the test voltage.
In a third aspect, an embodiment of the present invention further provides a computer device, where the computer device includes:
one or more processors;
a memory for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the circuit breaker loop resistance testing method of the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a circuit breaker loop resistance testing system, including: the test wire, the controller, the signal generator;
the first end of the test wire is connected with the circuit breaker, the second end of the test wire is connected with the output end of the signal generator, and the test wire is used for receiving and transmitting electric signals with the circuit breaker;
the output end of the controller is connected with the control end of the signal generator and is used for generating instructions to control the type of the electric signals generated by the signal generator and a target test line to which the electric signals reach, wherein the type of the electric signals comprises current signals and voltage signals;
the signal generator is used for generating the current signal or the voltage signal to the test line according to the instruction of the controller.
In a fifth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the circuit breaker loop resistance testing method according to the first aspect is implemented.
In this embodiment, the test lines connected to the first port of the circuit breaker are set as a first test line and a second test line, and the test lines connected to the second port of the circuit breaker are named as a third test line and a 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; determining a first voltage channel and a second voltage channel of the circuit breaker from a first test line, a second test line, a third test line and a fourth test line on the basis of the first current channel and the second current channel; inputting a test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage; and calculating the resistance value of the loop resistor according to the test current and the test voltage. The correct loop resistance test can be completed without distinguishing test wires, and the test efficiency is high, the accuracy is good, and the operation is convenient.
Drawings
Fig. 1a is a flowchart of a circuit breaker loop resistance testing method according to an embodiment of the present invention;
fig. 1b is a schematic diagram of a first test line for transmitting a first determination voltage signal to the circuit breaker according to an embodiment of the present invention;
fig. 1c is a schematic diagram of the first test line for transmitting the first determination voltage signal to the circuit breaker according to the first embodiment of the present invention;
fig. 1d is a schematic diagram illustrating a second determining voltage signal transmitted to the first current path according to an embodiment of the present invention;
fig. 1e is a schematic diagram of inputting a predetermined test current to a first current channel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit breaker loop resistance testing apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a circuit breaker loop resistance testing apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer device according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a circuit breaker loop resistance testing method according to an embodiment of the present invention, where this embodiment is applicable to a case where accurate loop resistance testing can be completed without distinguishing test lines, and the method can be executed by a circuit breaker loop resistance testing apparatus, and the circuit breaker loop resistance testing apparatus can be implemented by software and/or hardware, and can be configured in computer equipment, and the like, and specifically includes the following steps:
step 101, the test lines connected to the first port of the circuit breaker are a first test line and a second test line, and the test lines connected to the second port of the circuit breaker are a third test line and a fourth test line.
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The breaker is used for cutting off and connecting a load circuit and cutting off a fault circuit, so that the accident is prevented from being enlarged, and the safe operation is ensured.
The loop resistance value is a parameter indicating whether the connection of the conductive loop is good, and each type of product specifies a value within a certain range. If the loop resistance exceeds a predetermined value, it is likely that a certain connection of the conductive loop is not in good contact. When the high-current operation is carried out, the local temperature rise at the poor contact part is increased, even the vicious circle is caused to cause oxidation burning loss when the high-current operation is serious, and the double attention is particularly needed to the circuit breaker for the high-current operation.
The circuit breaker loop resistance test system is provided with four test wires which are respectively connected with two ends of a circuit breaker, the test wire connected with a first port of the circuit breaker is set to be a first test wire and a second test wire, and the test wire connected with another port of the circuit breaker, namely the test wire of a second port of the circuit breaker is named as a third test wire and a fourth test wire.
It should be noted that, two test lines at the same port may be mutually exchanged by a predetermined name, for example, the first test line of the first port of the circuit breaker may be any one of the two test lines at the first port side, and the other test line is the second test line, which is not limited in the embodiment of the present invention.
It should be noted that the first test line, the second test line, the third test line, and the fourth test line are provided as exemplary illustrations of the embodiments of the present invention, so as to explain the circuit breaker loop resistance test method, and in other embodiments, the test lines may be replaced according to actual operating conditions, and the embodiments of the present invention are not limited.
In some embodiments of the invention, either port of the circuit breaker may be the first port.
The circuit breaker is provided with two ports, wherein any one port can be used as a first port, and when one port is the first port, the other port is a second port.
It should be noted that the specification of the first port is an exemplary illustration of the embodiment of the present invention, and the embodiment of the present invention is not limited.
And 102, 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.
Illustratively, in the embodiment of the present invention, the first current path is determined from the two test lines of the other port based on the voltage value of the test line of the other port by applying a voltage signal to the test line of one of the ports and then detecting the voltage value of the test line of the other port. And then applying a voltage signal to the first current channel, detecting the voltage value of the test line of the other port opposite to the port connected with the first current channel, and determining a second current channel from the test line corresponding to the port based on the voltage value of the test line of the other port. Illustratively, a voltage signal is applied to a first test line of the first port, then voltage values of a third test line and a fourth test line of the second port are detected, and a first current channel is determined from the third test line and the fourth test line of the second port based on the voltage values of the third test line and the fourth test line. A voltage signal is then applied to the first current path, voltage values of test lines (i.e., the first test line and the second test line) of the first port are detected, and a second current path is determined from the first test line and the second test line based on the voltage values of the first test line and the second test line. It should be noted that, in other embodiments of the present invention, the first current channel and the second current channel may also be determined by other methods, for example, by applying a current signal, and the embodiments of the present invention are not described herein again. And determining the first current channel and the second current channel so as to inject test current into the corresponding current channel by test voltage when the loop resistance is calculated in subsequent test.
It should be noted that, the first current path and the second current path are exemplary illustrations of the embodiment of the present invention, and are not sequentially divided, and the embodiment of the present invention is not limited.
In some embodiments of the present invention, step 102 comprises:
step 1021, transmitting the first judgment voltage signal to a first test line of the circuit breaker.
Fig. 1b and fig. 1c are schematic diagrams of the first test line for transmitting the first determination voltage signal to the circuit breaker according to the first embodiment of the present invention.
As shown in fig. 1b or fig. 1c, a first judgment voltage signal U1 is transmitted to a first test line of the circuit breaker to enable the circuit breaker to be energized, and each test line connected with the circuit breaker has a voltage.
And step 1022, acquiring a third temporary voltage value of the third test line and a fourth temporary voltage value of the fourth test line.
Acquiring a voltage value of a third test line at the second port side of the circuit breaker at the moment, and taking the voltage value as a third temporary voltage value; and acquiring the voltage value of a fourth test line at the second port side of the circuit breaker at the moment as a fourth temporary voltage value. The third temporary voltage value and the fourth temporary voltage value are used for determining a current channel and a voltage channel subsequently.
Step 1023 determines a first minimum value of the third temporary voltage value and the fourth temporary voltage value.
Comparing the third temporary voltage value and the fourth temporary voltage value, and determining the smaller value between the third temporary voltage value and the fourth temporary voltage value as the first minimum value.
Illustratively, the third temporary voltage value is UT3The fourth temporary voltage value is UT4In U atT3And UT4After comparison between them, U is obtainedT3If the voltage value is smaller, the third temporary voltage value is set to UT3As the first minimum value.
And step 1024, taking the test line corresponding to the first minimum value as a first current channel.
And determining a test line corresponding to the first minimum value, marking the test line as a first current channel a, and subsequently determining a second current channel and a voltage channel.
Step 1025, transmitting the second determining voltage signal to the first current path.
Fig. 1d is a schematic diagram of transmitting a second determining voltage signal to the first current path according to an embodiment of the present invention.
As shown in fig. 1d, a second current path a is transmitted with a second current-judging voltage signal U2, so that the circuit breaker can be powered on, and each test line connected with the circuit breaker has a voltage.
It should be noted that fig. 1d is a schematic diagram of transmitting the second determining voltage signal to the first current path according to an embodiment of the present invention, and when the first current path is a test line near an inner side of the circuit breaker, the second determining voltage signal U2 is transmitted to the first current path near the inner side of the circuit breaker.
Step 1026, obtain a first temporary voltage value of the first test line and a second temporary voltage value of the second test line.
Acquiring a voltage value of a first test line at the first port side of the circuit breaker at the moment, and taking the voltage value as a first temporary voltage value; and acquiring the voltage value of the second test line at the first port side of the circuit breaker at the moment as a second temporary voltage value. The first temporary voltage value and the second temporary voltage value are used for determining a second current channel.
Step 1027, determining a first temporary voltage value and a second minimum value of the second temporary voltage value.
The first temporary voltage value and the second temporary voltage value are compared, and the smaller value between the first temporary voltage value and the second temporary voltage value is determined as a second minimum value.
Illustratively, the first temporary voltage value is UT1The second temporary voltage value is UT2In U atT1And UT2After comparison between them, U is obtainedT2If the voltage value of (2) is smaller, the second temporary voltage value is set to UT2As the second minimum value.
It should be noted that the first determining voltage signal and the second determining voltage signal are exemplary illustrations of the embodiment of the present invention, and the values of the first determining voltage signal and the second determining voltage signal may be the same or different, and the embodiment of the present invention is not limited.
And step 1028, taking the test line corresponding to the minimum value as a second current channel.
And determining a test line corresponding to the second minimum value, and marking the test line as a second current channel b.
And 103, determining 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.
And according to the determined first current channel and second current channel, determining a first voltage channel and a second voltage channel from a first test line, a second test line, a third test line and a fourth test line of four test lines connected with the circuit breaker.
In some embodiments of the present invention, step 103 comprises:
and step 1031, taking the test line on the same side of the breaker and the first current channel as a first voltage channel.
Two sides of the circuit breaker are respectively connected with two testing wires, and one of the two testing wires at the same side is a current channel and a voltage channel.
Another test line on the same side of the second port of the circuit breaker as the first current path is used as the first voltage path.
For example, if the third test line is determined to be the first current path, the fourth test line on the same side of the second port of the circuit breaker is the first voltage path.
For example, if the fourth test line is determined to be the first current path, the third test line on the same side of the second port of the circuit breaker is the first voltage path.
The embodiments of the present invention are merely examples, and are not intended to be limiting.
And step 1032, taking the test line on the same side of the breaker and the second current channel as a second voltage channel.
And taking another test line on the same side of the first port of the circuit breaker as the second current channel as a second voltage channel.
For example, if the first test line is determined to be the second current path, the second test line on the first port side of the circuit breaker is the second voltage path.
For example, if the second test line is determined to be the second current path, the first test line on the first port side of the circuit breaker is the second voltage path.
The embodiments of the present invention are merely examples, and are not intended to be limiting.
After four test wires of the circuit breaker loop resistance test system are randomly connected to two ends of the circuit breaker, current channels and voltage channels at two ends of the circuit breaker are automatically identified in the step 102 and the step 103, so that the test of the circuit breaker loop resistance can be directly carried out without distinguishing the test wires.
And 104, inputting a test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage.
And inputting the test current to the first current channel to obtain the voltage value of the first voltage channel and the voltage value of the second voltage channel. And calculating the voltage difference between the first voltage channel voltage value and the second voltage channel voltage value, and taking the voltage difference as the test voltage corresponding to the test current.
It should be noted that, inputting a test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel, as a test voltage, is an exemplary illustration of an embodiment of the present invention, in other embodiments of the present invention, a test current may also be input to the second current channel to obtain a voltage difference between the first voltage channel and the second voltage channel, as a test voltage.
In some embodiments of the present invention, step 104 comprises:
step 1041, inputting a preset test current to the first current channel.
Fig. 1e is a schematic diagram of inputting a predetermined test current to the first current path according to an embodiment of the present invention.
As shown in fig. 1e, a predetermined test current I is input to the first current path a, the second current path b is used as a negative electrode of the current, and the test current flows out from the second current path b. The dashed arrows in fig. 1e indicate the current direction of the test current I.
Step 1042, obtaining voltage values of the first voltage channel and the second voltage channel as a first test voltage and a second test voltage respectively.
When a preset test current is input into the first current channel a and the second current channel b is used as a current cathode, the voltage is measured on the other two voltage test lines, and a voltage difference exists between the two voltage test lines.
And respectively acquiring voltage values of the first voltage channel and the second voltage channel, and correspondingly determining the voltage values as a first test voltage and a second test voltage. The first test voltage and the second test voltage are used for calculating the voltage difference between the two ports of the circuit breaker subsequently.
And 1043, subtracting the second test voltage from the first test voltage to obtain a test voltage.
And subtracting the second test voltage from the first test voltage to obtain a voltage difference between the first voltage channel and the second voltage channel, and taking the voltage difference as the test voltage. The test voltage is used for subsequently calculating the loop resistance value of the circuit breaker.
And 105, calculating to obtain the loop resistance according to the test current and the test voltage.
And calculating the resistance value of the loop circuit by using a corresponding formula according to the test current and the test voltage.
In some embodiments of the present invention, step 105 comprises:
step 1051, substituting the test current and the test voltage into a direct current voltage reduction formula, and calculating the resistance value of the loop resistor, wherein the direct current voltage reduction formula is as follows:
Figure BDA0003475209830000121
wherein, R is loop resistance, U is the test voltage shown, and I is the test current.
The formula of the direct current voltage reduction method is as follows: and R is U/I, the test voltage is substituted into U in the direct current step-down formula, the test current is subjected to direct current step-down and substituted into I in the formula, the value of R can be obtained through calculation of a direct current step-down method, and the value of R is used as the resistance value of the circuit breaker loop resistor.
The present invention is by way of example only and is not intended as limiting.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
In this embodiment, the test lines connected to the first port of the circuit breaker are set as a first test line and a second test line, and the test lines connected to the second port of the circuit breaker are named as a third test line and a fourth test line; determining a first current channel and a second current channel of the circuit breaker from a first test line, a second test line, a third test line and a fourth test line based on the first judgment voltage signal and the second judgment voltage signal; determining a first voltage channel and a second voltage channel of the circuit breaker from a first test line, a second test line, a third test line and a fourth test line on the basis of the first current channel and the second current channel; inputting a test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage; and calculating the resistance value of the loop resistor according to the test current and the test voltage. The circuit breaker loop resistance testing method has the advantages that the voltage channels and the current channels of the ports on the two sides of the circuit breaker can be automatically judged only by connecting the four testing lines of the circuit breaker loop resistance testing system at the two ends of the circuit breaker randomly, correct loop resistance tests can be completed without distinguishing the testing lines, the accuracy is good, the operation is convenient, the circuit breaker loop resistance testing method is high in testing efficiency, and particularly, the advantage of high testing efficiency is more prominent when a large number of circuit breaker loop resistance tests are performed.
Example two
Fig. 2 is a block diagram of a circuit breaker loop resistance testing apparatus according to a second embodiment of the present invention, which may specifically include the following modules:
the initialization module 201 is configured to designate test lines connected to a first port of a circuit breaker as a first test line and a second test line, and designate the test lines connected to a second port of the circuit breaker as a third test line and a fourth test line;
in some embodiments of the invention, any port of the circuit breaker in the initialization module 201 may be the first port.
A current channel determining 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 determination voltage signal and a second determination voltage signal;
in some embodiments of the present invention, the current channel determination module 202 comprises:
the first judgment voltage signal transmission submodule is used for transmitting a first judgment voltage signal to the first test line of the circuit breaker;
the first temporary voltage value acquisition submodule is used for acquiring a third temporary voltage value of the third test line and a fourth temporary voltage value of the fourth test line;
a first minimum value determination submodule for determining a first minimum value of the third temporary voltage value and the fourth temporary voltage value;
the first current channel determination submodule is used for taking the test line corresponding to the first minimum value as the first current channel;
the second judgment voltage signal transmission submodule is used for transmitting a second judgment voltage signal to the first current channel;
the second temporary voltage value acquisition submodule is used for acquiring a first temporary voltage value of the first test line and a second temporary voltage value of the second test line;
a second minimum value determination submodule for determining a second minimum value of the first temporary voltage value and the second temporary voltage value;
and the second current channel determination submodule is used for taking the test line corresponding to the second minimum value as the second current channel.
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;
in some embodiments of the present invention, the voltage channel determining module 203 comprises:
a first voltage channel determination submodule for taking the test line of the circuit breaker on the same side as the first current channel as the first voltage channel;
and the second voltage channel determination submodule is used for taking the test line on the same side of the circuit breaker and the second current channel as the second voltage channel.
A test data obtaining module 204, configured to input a test current to the first current channel, and obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage;
in some embodiments of the present invention, the test data acquisition module 204 comprises:
the test current input submodule is used for inputting preset test current to the first current channel;
the voltage value acquisition submodule is used for acquiring voltage values of the first voltage channel and the second voltage channel and respectively serving as a first test voltage and a second test voltage;
and the test voltage calculation submodule is used for subtracting the second test voltage from the first test voltage to obtain the test voltage.
And the loop resistance value calculating module 205 is configured to calculate a loop resistance value according to the test current and the test voltage.
In some embodiments of the present invention, the loop resistance value calculating module 205 includes:
the circuit resistance value calculation submodule is used for substituting the test current and the test voltage into a direct current voltage reduction method formula to calculate the circuit resistance value, wherein the direct current voltage reduction method formula is as follows:
Figure BDA0003475209830000151
wherein R is the loop resistance, U is the test voltage, and I is the test current.
The circuit breaker loop resistance testing device provided by the embodiment of the invention can execute the circuit breaker loop resistance testing method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
EXAMPLE III
Fig. 3 is a schematic structural diagram of a circuit breaker loop resistance testing system provided in the third embodiment of the present invention, which may specifically include the following devices: a test line 301, a controller 302, a signal generator 303;
the first end of the test line 301 is connected with the circuit breaker, the second end of the test line 301 is connected with the output end of the signal generator 303, and the test line 301 is used for receiving and transmitting electric signals with the circuit breaker.
The output terminal of the controller 302 is connected to the control terminal of the signal generator 303, and is used for generating instructions to control the type of the electrical signal generated by the signal generator 303 and the target test line 301 to which the electrical signal arrives, wherein the type of the electrical signal comprises a current signal and a voltage signal.
A signal generator 303 for generating a current signal or a voltage signal to the test line 301 according to an instruction of the controller 302.
In order to make the embodiment of the present application better understood by those skilled in the art, an example of the structure of a circuit breaker loop resistance test system is described in the present specification.
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, first ends of the four test lines 301 are all connected to the circuit breaker, second ends of the four test lines are all connected to an output end of the signal generator 303, and the four test lines 301 are all used for receiving and transmitting signals with the circuit breaker. The first ends of the first test line 301 and the second test line 301 are connected with 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 with the second end of the circuit breaker.
The output end of the controller 302 is connected with the control end of the signal generator 303 and is used for generating an electric signal type for instructing the signal generator 303 to generate, wherein the electric signal type comprises a voltage signal and a current signal, and the controller 302 is further used for controlling the electric signal generated by the signal generator 303 to be transmitted to the target test line 301 to meet the requirement when identifying the current channel, the voltage channel and the test loop resistance. For example, the controller 302 generates a command to control the signal generator 303 to send a voltage signal to the fourth test line 301, and the signal generator 303 sends the voltage signal to the fourth test line 301 according to the command.
The circuit breaker loop resistance testing system provided by the embodiment of the invention can execute the circuit breaker loop resistance testing method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example four
Fig. 4 is a schematic structural diagram of a computer device according to a fourth embodiment of the present invention. FIG. 4 illustrates a block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention. The computer device 12 shown in FIG. 4 is only one example and should not bring any limitations to the functionality or scope of use of embodiments of the present invention.
As shown in FIG. 4, computer device 12 is in the form of a general purpose computing device. The components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Computer device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The 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/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, and commonly referred to as a "hard drive"). Although not shown in FIG. 4, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile 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 by 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 that are configured to carry out the functions of embodiments of the invention.
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 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.
Computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with computer device 12, and/or with any devices (e.g., network card, modem, etc.) that enable computer device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, computer device 12 may 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 network adapter 20. As shown, network adapter 20 communicates with the other modules of computer device 12 via bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with 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, among others.
The processing unit 16 executes programs stored in the system memory 28 to perform various functional applications and data processing, such as implementing the circuit breaker loop resistance testing method provided by the embodiment of the present invention.
EXAMPLE five
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the circuit breaker loop resistance testing method, and can achieve the same technical effect, and in order to avoid repetition, the computer program is not described here again.
A computer readable storage medium may include, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A circuit breaker loop resistance testing method is characterized by comprising the following steps:
the test lines connected with the first port of the circuit breaker are a first test line and a second test line, and the test lines connected with the second port of the circuit breaker are a third test line and a 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;
determining 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 on the basis of the first current channel and the second current channel;
inputting a test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as a test voltage;
and calculating to obtain the resistance value of the loop resistor according to the test current and the test voltage.
2. The method of claim 1, wherein any port of the circuit breaker is designated as the first port.
3. The method of claim 1, wherein determining a first current path and a second current path of the circuit breaker from the first test line, the second test line, the third test line, and the fourth test line comprises:
transmitting a first judgment 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 of the third and fourth temporary voltage values;
taking 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;
acquiring 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;
and taking the test line corresponding to the second minimum value as the second current channel.
4. The method of claim 3, wherein determining the first and second voltage paths of the circuit breaker from the first, second, third, and fourth test lines based on the first and second current paths comprises:
taking the test line of the circuit breaker on the same side as the first current channel as the first voltage channel;
and taking the test line on the same side of the circuit breaker and the second current channel as the second voltage channel.
5. The method of claim 1, wherein inputting a test current into the first current path to obtain a voltage difference between the first voltage path and the second voltage path as a test voltage comprises:
inputting a preset test current to the first current channel;
acquiring voltage values of the first voltage channel and the second voltage channel, and respectively using the voltage values as a first test voltage and a second test voltage;
and subtracting the second test voltage from the first test voltage to obtain the test voltage.
6. The method of claim 1, wherein calculating a loop resistance value from the test current and the test voltage comprises:
substituting the test current and the test voltage into a direct current voltage reduction formula to calculate the resistance value of the loop resistor, wherein the direct current voltage reduction formula is as follows:
Figure FDA0003475209820000021
wherein R is the loop resistance, U is the test voltage, and I is the test current.
7. A circuit breaker loop resistance testing arrangement, characterized by includes:
the initialization module is used for naming the test lines connected with the first port of the circuit breaker as a first test line and a second test line, and naming the test lines connected with the second port of the circuit breaker as a third test line and a fourth test line;
the current channel determining module is used for 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;
the voltage channel determining module is used for determining 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;
the test data acquisition module is used for inputting test current to the first current channel to obtain a voltage difference between the first voltage channel and the second voltage channel as test voltage;
and the loop resistor resistance value calculation module is used for calculating the loop resistor resistance value according to the test current and the test voltage.
8. A circuit breaker loop resistance test system, comprising: the test wire, the controller and the signal generator;
the first end of the test wire is connected with the circuit breaker, the second end of the test wire is connected with the output end of the signal generator, and the test wire is used for receiving and transmitting electric signals with the circuit breaker;
the output end of the controller is connected with the control end of the signal generator and is used for generating instructions to control the type of the electric signals generated by the signal generator and a target test line to which the electric signals reach, wherein the type of the electric signals comprises current signals and voltage signals;
the signal generator is used for generating the current signal or the voltage signal to the test line according to the instruction of the controller.
9. A computer device, characterized in that the computer device comprises:
one or more processors;
a memory for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the circuit breaker loop resistance testing method of any one of claims 1-6.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, implements the circuit breaker loop resistance testing method according to any one of claims 1-6.
CN202210053272.2A 2022-01-18 2022-01-18 Circuit breaker loop resistance testing method and device, computer equipment and storage medium Pending CN114545085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210053272.2A CN114545085A (en) 2022-01-18 2022-01-18 Circuit breaker loop resistance testing method and device, computer equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210053272.2A CN114545085A (en) 2022-01-18 2022-01-18 Circuit breaker loop resistance testing method and device, computer equipment and storage medium

Publications (1)

Publication Number Publication Date
CN114545085A true CN114545085A (en) 2022-05-27

Family

ID=81670660

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210053272.2A Pending CN114545085A (en) 2022-01-18 2022-01-18 Circuit breaker loop resistance testing method and device, computer equipment and storage medium

Country Status (1)

Country Link
CN (1) CN114545085A (en)

Similar Documents

Publication Publication Date Title
CN111653840B (en) Early warning method, device, equipment and storage medium
US20060210843A1 (en) Multiplexer and system for supplying current to an electrochemical cell stack
CN104820156B (en) A kind of Beam Detector and method
CN110501998B (en) BMS hardware in-loop test system and test method
CN116500487B (en) Fault detection system and method for switching power supply, terminal equipment and medium
CN112067970A (en) Plate intelligent test system with checking function
CN108983110B (en) Power supply reliability detection system of converter valve monitoring equipment
CN106872849B (en) Equipment internal IO sampling method, device and system
CN113341230A (en) Automatic testing system and method for multi-port cable of spacecraft
EP3719516B1 (en) Charging device test system and method
CN107271944A (en) A kind of full-automatic termination of program control type current transformer
CN116684343A (en) Automatic test method, device, system, equipment and medium for switch
CN114545085A (en) Circuit breaker loop resistance testing method and device, computer equipment and storage medium
CN115184822A (en) HI-POT testing device with multi-channel switching and contact self-checking method thereof
CN217085096U (en) Battery harness internal resistance detection device based on battery management system
CN114977109A (en) Method, device and equipment for identifying fault state of components in half-bridge power module
CN216956293U (en) Power battery detection device
CN116298850B (en) Testing device and testing method
CN220085024U (en) Test equipment and test system for generator rotor grounding protection device
CN107144422B (en) A kind of system in detection fiber circuit
WO2006096958A1 (en) Multiplexer and system for supplying current to an electrochemical cell stack
CN211627797U (en) Testing device for portable multi-channel insulation monitoring system
CN216285490U (en) DC low resistance tester
CN218383106U (en) Switch integration device for testing electronic and electrical components, testing system and vehicle
RU194201U1 (en) DEVICE FOR PROTECTION AGAINST AN UNAUTHORIZED SUPPLY OF VOLTAGE TO ELECTRICAL INSTRUMENT

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination