CN107340469B - GIS combined electrical activity characteristic test instrument and use method - Google Patents
GIS combined electrical activity characteristic test instrument and use method Download PDFInfo
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- CN107340469B CN107340469B CN201710427532.7A CN201710427532A CN107340469B CN 107340469 B CN107340469 B CN 107340469B CN 201710427532 A CN201710427532 A CN 201710427532A CN 107340469 B CN107340469 B CN 107340469B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention relates to the technical field of electrical equipment measurement, in particular to a GIS combined electrical activity characteristic testing instrument and a using method thereof, wherein the testing instrument comprises a relay, a first signal coupling clamp, a second signal coupling clamp, a high-frequency signal generator, a high-frequency signal receiver, a memory, a communication interface, a closing operation button, a separating operation button, a reset circuit, a power supply, a printer, a keyboard and a display which are all electrically connected with an analysis system; the coil of the relay is respectively connected with the auxiliary contact of the closing operation button and the auxiliary contact of the opening operation button in series and is electrically connected to a power supply; the normally open contact of the relay is connected in series between the high-frequency signal generator and the analysis system; the main contact of the closing operation button and the main contact of the opening operation button are connected to the equipment control circuit. The invention provides a GIS combined electrical appliance dynamic characteristic testing instrument which can finish dynamic characteristic measurement work under the condition that two sides of a circuit breaker are grounded and can finish double-station isolating switch dynamic characteristic test work.
Description
Technical Field
The invention relates to the technical field of electrical equipment measurement, in particular to a GIS combined electrical activity characteristic testing instrument and a using method thereof.
Background
Currently, the known dynamic characteristic testing instrument and method of the circuit breaker are only limited to measuring the dynamic characteristic of the circuit breaker, and the two ends of the circuit breaker cannot be grounded at the same time, so the device violations are caused. When overhauling, when the circuit breaker both sides ground, be equivalent to shorting the circuit breaker both ends, application traditional test instrument and test method measure, no matter what kind of state the circuit breaker is in, the instrument all detects to be the combined floodgate state, can't measure the dynamic characteristic of circuit breaker under the condition of not violating regulations. The GIS combined electrical apparatus is internally integrated with a double-station isolating switch, and according to the requirements of related anti-accident measures, the double-station isolating switch also needs to be subjected to a motion characteristic test, and the significance of the double-station isolating switch is the same as that of a breaker motion characteristic test, and the traditional testing instrument and the testing method cannot complete the measurement work under the condition of no violation.
Disclosure of Invention
The invention aims to overcome the defects of the potentiometric titration system, and provides a GIS combined electrical dynamic characteristic testing instrument which can finish the dynamic characteristic measurement work under the condition that the two sides of a circuit breaker are grounded and can finish the double-station isolating switch dynamic characteristic test work.
In order to solve the technical problems, the invention adopts the following technical scheme:
the GIS combined electrical activity characteristic testing instrument comprises a relay, a first signal coupling clamp, a second signal coupling clamp, a high-frequency signal generator, a high-frequency signal receiver, a memory, a communication interface, a closing operation button, a separating operation button, a reset circuit, a power supply, a printer, a keyboard and a display, wherein the power supply, the printer, the keyboard and the display are all electrically connected with an analysis system;
the coil of the relay is respectively connected with the auxiliary contact of the closing operation button and the auxiliary contact of the opening operation button in series and is electrically connected to a power supply; the normally open contact of the relay is connected in series between the high-frequency signal generator and the analysis system; the main contact of the closing operation button and the main contact of the opening operation button are connected to the equipment control circuit.
The invention provides a GIS combined electrical appliance dynamic characteristic testing instrument which can finish dynamic characteristic measurement work under the condition that two sides of a circuit breaker are grounded and can finish double-station isolating switch dynamic characteristic test work.
Preferably, the normally open contacts of the first signal coupling clamp, the high-frequency signal generator and the relay are electrically connected with the first input end of the analysis system, and the second signal coupling clamp and the high-frequency signal receiver are electrically connected with the second input end of the analysis system.
Preferably, the frequency of the high-frequency signal generator is 4 kHz-6 kHz.
Preferably, the first signal coupling clamp and the second signal coupling clamp are both of transformer structures.
Preferably, the communication interface is wireless communication or wired communication.
The relay and the relay coil are respectively connected in series with the auxiliary contact of the closing operation button and the auxiliary contact of the opening operation button and then are electrically connected to a power supply, and the normally open contact of the relay is connected in series between the high-frequency signal generator and the analysis system and is used for triggering the starting of the analysis system;
the main contact is respectively connected to the control loop of the tested equipment, and the auxiliary contact is electrically connected to the power supply after being connected in series with the coil of the relay;
the switch-off operation button is characterized in that the main contact is respectively connected to the control loop of the tested equipment, and the auxiliary contact is electrically connected to the power supply after being connected in series with the coil of the relay;
the signal coupling pliers are loaded on the fluid on two sides of the fracture of the equipment to finish the application of high-frequency signals on the loop and the extraction of the high-frequency signals on the loop.
Preferably, the first signal coupling clamp is used for high-frequency signal transmission;
the analysis system is used for obtaining the time used in the action process of the equipment through the time comparison of the two groups of signals, analyzing and comparing the time with the preset standard value of the equipment, and obtaining the conclusion of whether the equipment is qualified or not;
the memory is a medium for storing data and is responsible for storing test data;
the communication interface is used for communicating with equipment such as a computer and the like and transmitting test data;
the reset circuit resets the analysis system after each test is finished and prepares for the next test;
the printer is used for printing and preserving the test result;
a keyboard for setting data, selecting a device model, and the like;
a display for displaying test results and the like;
and a power supply for providing power to the device.
Preferably, the high-frequency signal generator provides a high-frequency signal for the test, which is applied to the circuit of the test device via the first signal coupling clamp.
Preferably, the fracture device triggers the action and simultaneously sends a high frequency signal to the first input of the analysis system through the relay, forming the start time of the test.
The high frequency signal receiver is used for receiving the high frequency signal on the tested device loop through another group of signal coupling clamps on the tested device loop.
Further, the high-frequency signal receiver receives the high-frequency signal and simultaneously sends information to the analysis system as a first group of signal input data to form the ending time of the test;
further, the specific principle is as follows: when the breaker fracture is closed, the first signal coupling clamp can be regarded as a small transformer, the through-flow of the equipment is a secondary coil of the first small transformer, the second signal coupling clamp can also be regarded as a small transformer, the through-flow of the equipment is a primary coil of the second small transformer, thus, the high-frequency signal is coupled into the through-flow of the equipment through the first small transformer, and induced electromotive force is generated in the primary coil of the second small transformer, namely in the through-flow of the equipment, so that the induced electromotive force is also generated in the secondary coil of the second small transformer;
when the breaker breaks, the first miniature transformer couples the high-frequency signal into the equipment through fluid, and because the through fluid is broken at the moment, no current is generated in the loop, the second miniature transformer cannot be excited, and therefore induced electromotive force is also generated in the secondary coil of the second miniature transformer.
Preferably, the entire detection process is a signal transmission accomplished by two transformer models.
The invention also provides a using method of the GIS combined electrical characteristic testing instrument, wherein the relay is a normally open relay, and the method comprises the following specific steps:
(a) Firstly, respectively clamping a first signal coupling clamp and a second signal coupling clamp on grounding wires at two sides of a breaker fracture to perform the conventional breaker dynamic characteristic test work;
(b) After the step (a), placing a bus side double-station disconnecting link and a load side double-station disconnecting link on two sides of the circuit breaker in a grounding state, and respectively clamping a first signal coupling clamp and a second signal coupling clamp on grounding carrier fluids on two sides of a fracture of the circuit breaker to perform the conventional circuit breaker dynamic characteristic test work;
(c) After the step (b), placing the circuit breaker in a closed state, placing the electric isolating switch at one side of a circuit breaker fracture in a grounding position, respectively clamping the first signal coupling clamp and the second signal coupling clamp on grounding carrier fluids at two sides of the circuit breaker fracture, completing the testing work of the dynamic characteristics of the other group of electric isolating switches, and similarly, operating and measuring the dynamic characteristics of the previous group of electric isolating switches;
(d) After the step (c), placing the GIS breaker in a closed state, placing the electric isolating switch on one side of a breaker break in a working position, respectively installing a group of temporary grounding wires on a bus side and a load side, respectively clamping a first signal coupling clamp and a second signal coupling clamp on the two groups of temporary grounding wires, respectively operating the two electric isolating switches, and completing the dynamic characteristic test work of the isolating switch in the working position.
Compared with the prior art, the invention has the beneficial effects that:
the invention completes the collection of the action signals of the breaker fracture device through two transformer models, the analysis system performs time differential inspection on the three-way signals to obtain the action speed, time and other action characteristic data of the breaker fracture, the whole process does not need to dismantle a grounding wire, a new test method is found for the action characteristic test of GIS equipment, a test instrument is provided, and the problem of equipment violation in the traditional equipment test process is solved;
reasonable in design, simple structure, the operation of being convenient for avoids violating regulations, can improve labor efficiency, improves test technology level.
Drawings
FIG. 1 is a schematic diagram of a GIS combined electrical activity test instrument of the present invention;
FIG. 2 is a diagram of an embodiment of the invention applied to conventional breaker dynamic testing;
FIG. 3 is a diagram of an embodiment of the invention applied to GIS breaker dynamic characteristics test;
FIG. 4 is a diagram of an embodiment of the invention applied to the test of the dynamic characteristics of the grounding position of the GIS electric isolating switch;
FIG. 5 is a diagram of an embodiment of the invention applied to the dynamic characteristic test of the working position of the GIS electric isolating switch.
Detailed Description
The present invention is further described with reference to the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for better illustration of the embodiments of the present invention, some of the elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of the embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present patent, and specific meanings of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.
Examples
Referring to fig. 1 to 5, an embodiment of a testing apparatus and a testing method for electrical characteristics of a GIS combiner is shown, the testing apparatus includes a relay 2, a first signal coupling clamp 4, a second signal coupling clamp 6, a high-frequency signal generator 3, a high-frequency signal receiver 5, a memory 7, a communication interface 8, a closing operation button 9, a opening operation button 10, a reset circuit, a power supply 11, a printer 12, a keyboard 13, and a display 14, all of which are electrically connected with an analysis system 1;
the coil of the relay 2 is respectively connected in series with the auxiliary contact of the closing operation button 9 and the auxiliary contact of the opening operation button 10, and is electrically connected to the power supply 11; the normally open contact of the relay 2 is connected in series between the high-frequency signal generator 3 and the analysis system 1; the main contact of the closing operation button 9 and the main contact of the opening operation button 10 are both connected to the device control circuit.
The normally open contacts of the first signal coupling clamp 4, the high-frequency signal generator 3 and the relay 2 are electrically connected with the first input end of the analysis system 1, and the second signal coupling clamp 6 and the high-frequency signal receiver 5 are electrically connected with the second input end of the analysis system 1.
The frequency of the high-frequency signal generator 3 is 4 kHz-6 kHz.
In addition, the first signal coupling clamp 4 and the second signal coupling clamp 6 are both of transformer structures.
Wherein, the communication interface 8 is wireless communication or wired communication.
In addition, the relay 2 and the relay coil are respectively connected in series with the auxiliary contact of the closing operation button and the auxiliary contact of the opening operation button and then are electrically connected to a power supply; the normally open contact of the relay is connected in series between the high-frequency signal generator and the analysis system and is used for triggering the start of the analysis system;
the main contact is respectively connected to the control loop of the tested equipment, and the auxiliary contact is electrically connected to the power supply after being connected in series with the coil of the relay;
the switch-off operation button is characterized in that the main contact is respectively connected to the control loop of the tested equipment, and the auxiliary contact is electrically connected to the power supply after being connected in series with the coil of the relay;
the signal coupling pliers are loaded on the fluid on two sides of the fracture of the equipment to finish the application of high-frequency signals on the loop and the extraction of the high-frequency signals on the loop.
The first signal coupling clamp is used for transmitting high-frequency signals;
the analysis system is used for obtaining the time used in the action process of the equipment through the time comparison of the two groups of signals, analyzing and comparing the time with the preset standard value of the equipment, and obtaining the conclusion of whether the equipment is qualified or not;
the memory is a medium for storing data and is responsible for storing test data;
the communication interface is used for communicating with equipment such as a computer and the like and transmitting test data;
the reset circuit resets the analysis system after each test is finished and prepares for the next test;
the printer is used for printing and preserving the test result;
a keyboard for setting data, selecting a device model, and the like;
a display for displaying test results and the like;
and a power supply for providing power to the device.
In addition, a high-frequency signal generator provides a high-frequency signal for the test, which is applied to the circuit of the test device via the first signal coupling clamp.
The fracture device triggers the action and sends a high-frequency signal to a first input end of the analysis system through the relay to form the starting time of the test.
The high frequency signal receiver is used for receiving the high frequency signal on the tested device loop through another group of signal coupling clamps on the tested device loop.
In addition, the high-frequency signal receiver receives the high-frequency signal and simultaneously sends information to the analysis system as a first group of signal input data to form the ending time of the test;
the specific principle is as follows: when the breaker fracture is closed, the first signal coupling clamp can be regarded as a small transformer, the through-flow of the equipment is a secondary coil of the first small transformer, the second signal coupling clamp can also be regarded as a small transformer, the through-flow of the equipment is a primary coil of the second small transformer, thus, the high-frequency signal is coupled into the through-flow of the equipment through the first small transformer, and induced electromotive force is generated in the primary coil of the second small transformer, namely in the through-flow of the equipment, so that the induced electromotive force is also generated in the secondary coil of the second small transformer;
when the breaker breaks, the first miniature transformer couples the high-frequency signal into the equipment through fluid, and because the through fluid is broken at the moment, no current is generated in the loop, the second miniature transformer cannot be excited, and therefore induced electromotive force is also generated in the secondary coil of the second miniature transformer.
The whole detection process is signal transmission completed through two transformers.
The invention also provides a using method of the GIS combined electrical characteristic testing instrument, wherein the relay 2 is a normally open relay, and the method comprises the following specific steps:
(a) Firstly, the first signal coupling clamp 4 and the second signal coupling clamp 6 are respectively clamped on the grounding wires at two sides of a breaker fracture, and the conventional breaker dynamic characteristic test work is carried out;
(b) After the step (a), placing a bus side double-station disconnecting link and a load side double-station disconnecting link on two sides of the circuit breaker in a grounding state, and respectively clamping a first signal coupling clamp 4 and a second signal coupling clamp 6 on grounding carrier fluids on two sides of a circuit breaker fracture to perform the conventional circuit breaker dynamic characteristic test work;
(c) After the step (b), placing the circuit breaker in a closed state, placing an electric isolating switch at one side of a circuit breaker fracture in a grounding position, respectively clamping a first signal coupling clamp 4 and a second signal coupling clamp 6 on grounding carrier fluids at two sides of the circuit breaker fracture, completing another group of electric isolating switch dynamic characteristic test work, and similarly, operating and measuring the dynamic characteristic of the previous group of electric isolating switches;
(d) After the step (c), placing the GIS breaker in a closed state, placing the electric isolating switch at one side of the breaker break at a working position, respectively installing a group of temporary grounding wires at the bus side and the load side, respectively clamping the first signal coupling clamp 4 and the second signal coupling clamp 6 on the two groups of temporary grounding wires, respectively operating the two electric isolating switches, and completing the dynamic characteristic test work of the isolating switch at the working position.
The connection principle, the working principle and the process of the GIS combined electrical activity characteristic testing instrument are specifically described below:
in fig. 1, a schematic diagram of a GIS combiner electrical activity testing apparatus is provided, including: the first coupling clamp 4, the high-frequency signal generator 3 and the normally open contact of the relay 2 are electrically connected with the first input end of the analysis system 1 in turn, the second signal coupling clamp 6 and the high-frequency signal receiver 5 are electrically connected with the second input end of the analysis system 1, and the memory 7, the communication interface 8, the power supply 11, the printer 12, the keyboard 13, the display 14 and the reset circuit are correspondingly and electrically connected with the analysis system 1.
The coil of the relay 3 is connected in series with the sub-contact of the closing operation button 9 and the sub-contact of the opening operation button 10, respectively, and then electrically connected to the power supply 11. The normally open contact of the relay 2 is connected in series between the high frequency signal generator 3 and the analysis system 1 for triggering the start-up of the analysis system 1. The main contact of the closing operation button 9 is connected to the control loop of the tested equipment, and the auxiliary contact is electrically connected to a power supply after being connected in series with the coil of the relay 2; the main contact of the opening operation button 10 is connected to the control circuit of the tested equipment, and the auxiliary contact is connected in series with the coil of the relay 2 and then is electrically connected to a power supply.
In the embodiment shown in fig. 2, the first signal coupling clamp 4 and the second signal coupling clamp 6 are respectively clamped on the grounding wires at two sides of the breaker fracture, so that the conventional breaker dynamic characteristic testing work is completed.
In the embodiment shown in fig. 3, the double-station isolating switches at two sides of the GIS circuit breaker are in a grounding state, and the first signal coupling clamp 4 and the second signal coupling clamp 6 are respectively clamped on the grounding carrier fluid at two sides of the circuit breaker fracture, so that the conventional circuit breaker dynamic characteristic testing work is completed.
In the embodiment shown in fig. 4, the GIS circuit breaker is placed in a closed state, then the electric isolating switch at one side of the circuit breaker break is placed in a grounding position, the first signal coupling clamp 4 and the second signal coupling clamp 6 are respectively clamped on the grounding carrier fluid at two sides of the circuit breaker break, another set of electric isolating switch dynamic characteristic testing work is completed, and the dynamic characteristics of the previous set of electric isolating switch are measured in the same operation.
In the embodiment shown in fig. 5, the GIS circuit breaker is placed in a closed state, then the electric isolating switch at the break side of the circuit breaker is placed in a working position, a set of temporary grounding wires are respectively arranged at the bus side and the load side, the first signal coupling clamp 4 and the second signal coupling clamp 6 are respectively clamped on the two sets of temporary grounding wires, and the two electric isolating switches are respectively operated, so that the dynamic characteristic test work of the isolating switch at the working position is completed.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not intended to limit the scope of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principles of the present patent are included in the protection scope of the present claims.
Claims (4)
1. The using method of the GIS combined electrical activity characteristic testing instrument is characterized in that the testing instrument comprises a relay (2), a first signal coupling clamp (4), a second signal coupling clamp (6), a high-frequency signal generator (3), a high-frequency signal receiver (5), a memory (7), a communication interface (8), a closing operation button (9), a separating operation button (10), a reset circuit, a power supply (11) and a printer (12), wherein a keyboard (13) and a display (14) are electrically connected with an analysis system (1);
the coil of the relay (2) is respectively connected with the auxiliary contact of the closing operation button (9) and the auxiliary contact of the opening operation button (10) in series and is electrically connected to the power supply (11); the normally open contact of the relay (2) is connected in series between the high-frequency signal generator (3) and the analysis system (1); the main contact of the closing operation button (9) and the main contact of the opening operation button (10) are connected to the equipment control circuit.
The normally open contacts of the first signal coupling clamp (4), the high-frequency signal generator (3) and the relay (2) are electrically connected with the first input end of the analysis system (1), and the second signal coupling clamp (6) and the high-frequency signal receiver (5) are electrically connected with the second input end of the analysis system (1);
the relay (2) is a normally open relay, and the specific steps include:
(a) Firstly, a first signal coupling clamp (4) and a second signal coupling clamp (6) are respectively clamped on grounding wires at two sides of a breaker fracture, and conventional breaker dynamic characteristic testing work is carried out;
(b) After the step (a), the bus side double-station disconnecting link and the load side double-station disconnecting link on two sides of the circuit breaker are in a grounding state, and the first signal coupling clamp (4) and the second signal coupling clamp (6) are respectively clamped on grounding carrier fluids on two sides of a fracture of the circuit breaker, so that the traditional circuit breaker dynamic characteristic test work is carried out;
(c) After the step (b), placing the circuit breaker in a closed state, placing an electric isolating switch at one side of a circuit breaker fracture in a grounding position, respectively clamping a first signal coupling clamp (4) and a second signal coupling clamp (6) on grounding carrier fluids at two sides of the circuit breaker fracture, completing the testing work of the dynamic characteristics of the other group of electric isolating switches, and similarly, operating and measuring the dynamic characteristics of the previous group of electric isolating switches;
(d) After the step (c), placing the GIS breaker in a closed state, placing the electric isolating switch at one side of a breaker break at a working position, respectively installing a group of temporary grounding wires at a bus side and a load side, respectively clamping a first signal coupling clamp (4) and a second signal coupling clamp (6) on the two groups of temporary grounding wires, respectively operating the two electric isolating switches, and completing the dynamic characteristic test work of the isolating switch at the working position.
2. The method for using the GIS combined electrical activity characteristic testing instrument according to claim 1, wherein the frequency of the high-frequency signal generator (3) is 4 kHz-6 kHz.
3. The method for using the GIS combined electrical activity characteristic testing instrument according to claim 1, wherein the first signal coupling clamp (4) and the second signal coupling clamp (6) are of transformer structures.
4. The method for using a GIS electrical activity test instrument according to claim 1, wherein the communication interface (8) is a wireless communication or a wired communication.
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| CN109298332A (en) * | 2018-11-29 | 2019-02-01 | 广东电网有限责任公司 | A kind of portable beaker characteristic test device |
| CN110850282A (en) * | 2019-12-02 | 2020-02-28 | 广东电网有限责任公司 | Test signal input device and test method for injection type GIS combined electrical apparatus |
| CN110865301A (en) * | 2019-12-02 | 2020-03-06 | 广东电网有限责任公司 | Induction type GIS combined electrical appliance test signal input device and test method |
| CN112964984A (en) * | 2021-04-06 | 2021-06-15 | 中国三冶集团有限公司 | Rapid debugging structure and method for high-voltage switch dynamic characteristic test |
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| US9551752B2 (en) * | 2014-01-16 | 2017-01-24 | Vanguard Instruments Company, Inc. | Dual ground breaker testing system |
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| CN202332019U (en) * | 2011-09-15 | 2012-07-11 | 宁波市鄞州供电局 | Simulation circuit breaker |
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