CN112731239A - Function test tool for fault indicator - Google Patents
Function test tool for fault indicator Download PDFInfo
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- CN112731239A CN112731239A CN202011521105.3A CN202011521105A CN112731239A CN 112731239 A CN112731239 A CN 112731239A CN 202011521105 A CN202011521105 A CN 202011521105A CN 112731239 A CN112731239 A CN 112731239A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a function test tool of a fault indicator, which comprises a line simulation coil, a high-precision current transformer, a current measuring meter, a time relay, a high-power resistor, a voltage regulator, a 10kV booster and an electric field rain environment test device. The invention can truly reflect the outdoor application scene of the equipment in the factory environment of the fault indicator, ensures that the current, electric field measurement precision, fault recording and electric field stability functions of the fault indicator can be completely tested when the fault indicator leaves a factory, has low design cost and meets the requirement of batch test.
Description
Technical Field
The invention relates to the technical field of medium voltage distribution automation, in particular to a function test tool for a fault indicator.
Background
Along with the construction of distribution network and the transformation process accelerate, the distribution network is to the electric wire netting rack, distribution automation equipment's demand is also flourishing day by day, and distribution automation equipment can once only be put in place distribution automation equipment installation in advance when the design in the new circuit of distribution network at present, avoids follow-up upgrading transformation repeatedly, but old circuit still occupies the main component in the distribution network, for the automation level that promotes this part circuit, can avoid the circuit to have a power failure erection equipment simultaneously, fault indicator's the fine solution this contradiction that appears. The fault indicator is convenient to install, does not need a circuit to be powered off, and can answer the distribution automation level of the hoisting net in a short time.
The fault indicator belongs to medium-voltage distribution network automation equipment, the equipment must be subjected to strict function test when leaving a factory, most manufacturers only provide basic ideal environment for function test due to the limitation of the manufacturing cost of the whole test environment, the performance of the equipment cannot be truly reflected, and therefore the success rate of field monitoring is reduced.
Disclosure of Invention
The invention provides a fault indicator function testing tool aiming at the defects of the prior art, which solves the limitation of the application scene of real reaction equipment in outdoor sites under the factory environment of a fault indicator.
In order to achieve the purpose, the invention provides a function test tool for a fault indicator, which comprises a circuit simulation coil, a high-precision current transformer, a current measuring meter, a time relay, a high-power resistor, a voltage regulator, a 10kV booster and an electric field rain environment test device, wherein the function test tool comprises:
the circuit simulation coil is wound by adopting an enameled wire, and one open-circuit wire is fixed on one side of the coil and used for simulating circuit current and 10kV wiring;
the high-precision current transformer adopts a 0.2 s-level sampling current transformer and is used for accurately testing the coil current;
the current measuring meter is used for displaying the line current with the measuring precision of 0.2s level;
the time relay A, B is used for realizing the minimum switch control of 1s, and the invention needs two relays in total;
the high-power resistors 5 and 6 are used for providing extra resistors to limit the secondary side current of the voltage regulator, wherein the resistance value of the high-power resistor 6 is 5 ohms, and the resistance value of the high-power resistor 5 is 100 ohms;
the voltage regulator is used for performing alternating current conversion, the input end of the voltage regulator is 220V alternating current, and the output end of the voltage regulator can realize the alternating current of 0V to 500V;
the 10kV booster is used for simulating the 10kV voltage of the line;
the electric field rain environment testing device is used for simulating on-site rain and realizing electric field fluctuation in a rain state in an actual environment;
wherein, one end of the two output ports of the voltage regulator is connected with the input end of the circuit simulation coil, the circuit simulation coil passes through the high-precision current transformer, the current of the circuit simulation coil is collected by the current transformer and then displayed on the current measuring meter, the output end of the circuit simulation coil is connected with a time relay, the output end of the relay is connected with a parallel circuit consisting of two high-power resistors, wherein, in the parallel circuit, the power resistor with smaller resistance value is connected with the time relay in series, and the common output end of the parallel circuit is connected with the other end of the two output ports of the voltage regulator; the output end of the voltage regulator is connected with a circuit to simulate one end of an open-circuit wire of the coil, and the side of the coil where the open-circuit wire is located is simultaneously arranged at the lower end of the electric field rain environment testing device.
The invention has the beneficial technical effects that: the invention can realize that the outdoor application scene of the equipment is truly reflected in the factory environment of the fault indicator by matching the electric field rain device with the current and the voltage of the line, ensures that the current and the electric field measurement precision, the fault recording and the electric field stability function of the fault indicator can be completely tested when the fault indicator leaves a factory, has low design cost and meets the requirement of batch test.
Drawings
Fig. 1 is an overall design layout diagram of a functional test fixture of the fault indicator of the present invention.
Reference numerals: 1 is 220V alternating current power supply, 2 is the voltage regulator, 3 is circuit simulation coil, 4 is time relay A, 5 is 100 ohm high-power resistance, 6 is 5 ohm high-power resistance, 7 is time relay B, 8 is the current measurement meter, 9 is high accuracy current transformer, 10 is 10kV booster, 11 is electric field rain environment testing arrangement.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1, a fault indicator's functional test frock, including circuit analog coil 1, high accuracy current transformer 9, current measurement meter 8, time relay 4, 7, high power resistance 5, 6, voltage regulator 2, 10kV booster 10, electric field rain environment testing arrangement, wherein:
the voltage regulator, 220V alternating current input, the output can the different voltage value, and the system can adjust output voltage according to different current demands, and this voltage can produce different current values in the circuit through cooperating with high-power resistance and time relay.
And the analog coil can multiply the generated alternating current by the difference of winding turns.
The time relay can generate a fixed current value through switching on and switching off, and can generate a permanent short-circuit fault or a transient short-circuit fault through switching on and switching off matching. The method comprises the steps that a time relay A and a time relay B are disconnected in an initial state, when a test is started, the time relay A is set to be opened, the time relay B is opened after a certain stable time, the time relay A and the time relay B are simultaneously disconnected after the time relay B is set for 1-3s, the generated fault is a permanent fault, and the fault can verify the permanent short circuit function test of a fault indicator. If the time relay A and the time relay B are turned off simultaneously and the time relay A is turned on after a certain time, an instantaneous short-circuit fault can be generated, and the fault can verify the instantaneous short-circuit function test of the fault indicator.
When the electric field measurement is required, it is necessary to apply a voltage of 10kV to the fixed wire in the line simulator, which is generated by a booster directly connected to the open wire in the line simulator, which is completely insulated from the enamel wire. At the same time, the device must be insulated from the surroundings and must be protected to a certain extent against the entry of persons when it is activated. However, when the electric field change in rainy days needs to be simulated, the electric field rain environment testing device above the coil can be opened, and the electric field value sensed by the fault indicator at the moment has high similarity with the electric field value sensed in an actual field.
The invention solves the limitation of real reaction equipment in an application scene of an outdoor site under the factory environment of the fault indicator, can simultaneously solve the current electric field and fault function test when the fault indicator leaves a factory, can ensure that all equipment sent to the market leave the factory and test completely, and can not cause the fault indicator to be unusable because of the change of the environment on the site.
The above-mentioned embodiments are illustrative of the specific embodiments of the present invention, and are not restrictive, and those skilled in the relevant art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should be included in the scope of the present invention.
Claims (1)
1. The utility model provides a fault indicator's functional test frock, includes circuit analog coil, high accuracy current transformer, current measurement meter, time relay A, B, high-power resistance, the voltage regulator, 10kV booster, electric field rain environment testing arrangement, its characterized in that:
the circuit simulation coil is wound by adopting an enameled wire, and one open-circuit wire is fixed on one side of the coil and used for simulating circuit current and 10kV wiring;
the high-precision current transformer adopts a 0.2 s-level sampling current transformer and is used for accurately testing the coil current;
the current measuring meter is used for displaying the line current with the measuring precision of 0.2s level;
the time relay A, B is used for realizing the minimum switch control of 1s, and the invention needs two relays in total;
the high-power resistors 5 and 6 are used for providing extra resistors to limit the secondary side current of the voltage regulator, wherein the resistance value of the high-power resistor 5 is 100 ohms, and the resistance value of the high-power resistor 6 is 5 ohms;
the voltage regulator is used for performing alternating current conversion, the input end of the voltage regulator is 220V alternating current, and the output end of the voltage regulator can realize the alternating current of 0V to 500V;
the 10kV booster is used for simulating the 10kV voltage of the line;
the electric field rain environment testing device is used for simulating on-site rain and realizing electric field fluctuation in a rain state in an actual environment;
one end of the two output ports of the voltage regulator is connected with the input end of a circuit simulation coil, the circuit simulation coil passes through the high-precision current transformer, the output end of the circuit simulation coil is connected with a time relay, the output end of the relay is connected with a parallel circuit consisting of two high-power resistors A, B, in the parallel circuit, the power resistor 6 with smaller resistance is connected with the time relay in series A, and the output common end of the parallel circuit is connected with the other end of the two output ports of the voltage regulator; the output end of the voltage regulator is connected with a circuit to simulate one end of an open-circuit wire of the coil, and the side of the coil where the open-circuit wire is located is simultaneously arranged at the lower end of the electric field rain environment testing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521105.3A CN112731239A (en) | 2020-12-21 | 2020-12-21 | Function test tool for fault indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521105.3A CN112731239A (en) | 2020-12-21 | 2020-12-21 | Function test tool for fault indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112731239A true CN112731239A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011521105.3A Withdrawn CN112731239A (en) | 2020-12-21 | 2020-12-21 | Function test tool for fault indicator |
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| Country | Link |
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| CN (1) | CN112731239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200244A (en) * | 2022-02-17 | 2022-03-18 | 北京芯可鉴科技有限公司 | Environmental stress test system for electric power secondary equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364355A (en) * | 2011-10-12 | 2012-02-29 | 华北电力大学 | Test device for performance of overhead line fault indicator |
| CN108614229A (en) * | 2018-05-25 | 2018-10-02 | 国网浙江省电力有限公司电力科学研究院 | Distribution line fault detector Function detection platform and detection method under extreme environment |
| CN109459714A (en) * | 2018-10-09 | 2019-03-12 | 国网湖南省电力有限公司 | A kind of fault detector electromagnetism compatibility testing device, test method and system |
| CN110865324A (en) * | 2019-10-22 | 2020-03-06 | 国网浙江省电力有限公司电力科学研究院 | Automatic setting method and system for line fault indicator |
-
2020
- 2020-12-21 CN CN202011521105.3A patent/CN112731239A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364355A (en) * | 2011-10-12 | 2012-02-29 | 华北电力大学 | Test device for performance of overhead line fault indicator |
| CN108614229A (en) * | 2018-05-25 | 2018-10-02 | 国网浙江省电力有限公司电力科学研究院 | Distribution line fault detector Function detection platform and detection method under extreme environment |
| CN109459714A (en) * | 2018-10-09 | 2019-03-12 | 国网湖南省电力有限公司 | A kind of fault detector electromagnetism compatibility testing device, test method and system |
| CN110865324A (en) * | 2019-10-22 | 2020-03-06 | 国网浙江省电力有限公司电力科学研究院 | Automatic setting method and system for line fault indicator |
Non-Patent Citations (1)
| Title |
|---|
| 田庆生等: "10 kV配电网故障指示器仿真测试平台设计", 《云南电力技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200244A (en) * | 2022-02-17 | 2022-03-18 | 北京芯可鉴科技有限公司 | Environmental stress test system for electric power secondary equipment |
| CN114200244B (en) * | 2022-02-17 | 2022-04-29 | 北京芯可鉴科技有限公司 | Environmental stress test system for electric power secondary equipment |
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Application publication date: 20210430 |