CN203551643U - One-time wiring apparatus for testing reference voltage and leakage current of 1000-kV lightning arrester - Google Patents
One-time wiring apparatus for testing reference voltage and leakage current of 1000-kV lightning arrester Download PDFInfo
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- CN203551643U CN203551643U CN201320723271.0U CN201320723271U CN203551643U CN 203551643 U CN203551643 U CN 203551643U CN 201320723271 U CN201320723271 U CN 201320723271U CN 203551643 U CN203551643 U CN 203551643U
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Abstract
The utility model discloses a one-time wiring apparatus for testing a reference voltage and a leakage current of a 1000-kV lightning arrester. The one-time wiring apparatus is composed of an industrial personal computer, a communication module, a direct-current high voltage generator, a positive-negative adjustable direct-current power supply, an ampere meter A1, an ampere meter A2 and a relay adapter panel. The industrial personal computer is connected with the direct-current high voltage generator and the positive-negative adjustable direct-current power supply by the communication module to carry out data communication; the direct-current high voltage generator and the positive-negative adjustable direct-current power supply are respectively connected in series with the ampere meters and then are connected with the relay on the relay adapter panel; and the relay adapter panel is connected with a tested lightning arrester by a testing line. According to the scheme, the wiring can be carried out conveniently; all test items of the lightning arrester unit can be completed by one-time wiring and thus the repeated wiring replacement can be avoided; the time for power failure can be shortened; and the time and effort can be saved. Therefore, the apparatus has the good application prospects.
Description
Technical field
The utility model belongs to electric integrated field of measuring technique, is specifically related to the primary connection device of a kind of 1000kV of test lightning arrester reference voltage and leakage current.
Background technology
220kV and above lightning arrester normally consist of single-phase multi-section serial, and the higher joint number of electric pressure is more, and 1000kV lightning arrester consists of 5 joint units in series conventionally.In electric integrated measuring technique, traditional D.C. reference voltage of arrester, the method for testing of leakage DC current test are carried out section by section.When measuring the lightning arrester of more piece units in series formation, need to measure section by section, caused repetition wiring.And while saving lightning arrester unit, need to remove once lead-in wire, thereby cause setting up time long on measuring, labour intensity is large, and there is higher potential safety hazard in inefficiency.
Utility model content
In order to overcome the problems of the prior art, the utility model provides the primary connection device of a kind of 1000kV of test lightning arrester reference voltage and leakage current, primary connection can complete the DC reference voltage of all lightning arresters unit and leak DC current test, and effectively the problems such as line workload is large are repeated to disconnect in solution scene.
In order to achieve the above object, the technical scheme that the utility model adopts is:
The primary connection device of test 1000kV lightning arrester reference voltage and leakage current, comprise industrial computer, communication module, high voltage direct current generator, positive and negative adjustable DC power supply, reometer A1, reometer A2 and relay card extender, described industrial computer is connected with positive and negative adjustable DC power supply with high voltage direct current generator respectively by communication module, carries out data communication; After being in series by cable with reometer A1, described high voltage direct current generator is connected with the relay K a on relay card extender; After being in series by cable with reometer A2, described positive and negative adjustable DC power supply is connected with the relay K b on relay card extender; Described relay card extender also comprises relay K c in order to ground connection; Described relay card extender is provided with 6 output interfaces and is connected with tested lightning arrester by p-wire.
Aforesaid communication module carries out data communication by photoelectric isolation module and industrial computer, reometer A1, reometer A2, high voltage direct current generator, positive and negative adjustable DC power supply; Described photoelectric isolation module is for converting the electrical signal to light signal and convert light signal to electric signal at data communication process, and opposing electromagnetic interference (EMI); Described communication module is for carrying out filtering and AD/DA conversion to electric signal.
Aforesaid relay card extender according to testing requirement by relay K a, thereby relay K b and relay K c join and are communicated with corresponding p-wire from different output interfaces.
The beneficial effects of the utility model are: primary connection device of the present utility model, easy-to-connect, primary connection can complete the DC reference voltage of all lightning arresters unit and leak DC current test, do not need to change test connection, do not need once lead-in wire and the process of the test of removing joint lightning arrester unit automatically to carry out, avoid repeatedly changing wiring, effectively the problems such as line workload is large are repeated to disconnect in solution scene, reduce experiment work amount, shorten the time that needs power failure, time saving and energy saving, there is good application and promotion prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of testing the primary connection device of lightning arrester reference voltage and leakage current in embodiment of the present utility model;
Fig. 2 is the communication mode schematic diagram of communication module of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
The DC voltage value of the lightning arrester of measuring when the DC reference voltage of lightning arrester refers to lightning arrester by direct-current reference current, the direct-current reference current of lightning arrester is got 8mA, 0.75U conventionally
1mArefer to 0.75 times of 8mA DC reference voltage.What the leakage current under the DC reference voltage of 8mA and 0.75 times of this voltage reflected in fact is the position of lightning arrester U-I knee of characteristic, be to determine two important parameters of lightning arrester characteristic, by these two parameters, can directly reflect that lightning arrester is whether in aging and make moist.
As shown in Figure 1, in embodiment of the present utility model, in order to test DC reference voltage and the leakage current of lightning arrester of 1000kV, 1000kV lightning arrester consists of 5 joint units in series conventionally, this primary connection device, comprises industrial computer, communication module, high voltage direct current generator, positive and negative adjustable DC power supply, reometer A1, reometer A2 and relay card extender.Wherein, industrial computer is connected with high voltage direct current generator, positive and negative adjustable DC power supply respectively by communication module, the row data communication of going forward side by side; After being in series by cable with reometer A1, high voltage direct current generator is connected with the relay K a on relay card extender; After positive and negative adjustable DC power supply is in series by cable with reometer A2, be connected with the relay K b on relay card extender, relay card extender also comprises relay K c in order to ground connection; Relay card extender is provided with 6 output interfaces and is connected with tested lightning arrester by p-wire, and can be according to user's testing requirement, by relay K a, thereby relay K b and relay K c join and are communicated with corresponding p-wire from different output interfaces.
Communication module carries out data communication by photoelectric isolation module and industrial computer, reometer A1, reometer A2, high voltage direct current generator and positive and negative adjustable DC power supply as shown in Figure 2.Wherein photoelectric isolation module can convert the electrical signal to optical signal transmission, and then converts light signal to electric signal, can effectively resist various electromagnetic interference (EMI), improves transmission speed and equipment dependability simultaneously, guarantees the accuracy of signal transmission; Communication module can carry out to electric signal the processing such as filtering, AD/DA conversion.
The method of testing of the primary connection device based on above-mentioned test 1000kV lightning arrester reference voltage and leakage current, its step is as follows:
Step 1: first every joint of tested lightning arrester is connected with corresponding p-wire, and p-wire is connected to the output port of relay card extender;
Step 2: test point following several situations:
2a) the situation of test cell 1 and unit 2,
If DC reference voltage and the leakage current of test lightning arrester unit 1 and unit 2, relay K a is placed in to the output port 1 of relay card extender, relay K b is placed in the output port 2 of relay card extender, relay K c is placed in the output port 6 of relay card extender, by industrial computer, regulate high voltage direct current generator and positive and negative adjustable DC power supply, the current value that makes reometer A1 is 16mA, the current value of reometer A2 is 8mA simultaneously, conventionally the voltage of high voltage direct current generator is much larger than the voltage of positive and negative adjustable DC power supply, can ignore the leakage current in unit 3, the now voltage of high voltage direct current generator, be the DC reference voltage of lightning arrester unit 1 when reference current is 8mA, the voltage that the voltage of high voltage direct current generator deducts positive and negative adjustable DC power supply is the DC reference voltage of lightning arrester unit 2 when reference current is 8mA, by industrial computer, regulating the output valve of positive and negative adjustable DC power supply is zero, and then by industrial computer, regulating the output voltage of high voltage direct current generator is the 0.75U of unit 2
8mA, now the reading of reometer A2 is the 0.75U of unit 2
8mAunder leakage current, the output valve that keeps positive and negative adjustable DC power supply is zero, and by industrial computer, regulating the output voltage of high voltage direct current generator is the 0.75U of unit 1
8mA, now the current value of reometer A1 deducts the current value of reometer A2, is the 0.75U of unit 1
8mAunder leakage current.Wherein, the data of reometer A1 and reometer A2 can read by communication module and photoelectric isolation module;
2b) the situation of measuring unit 2 and unit 3, unit 3 and unit 4,
If test lightning arrester unit i(i=2, 3) and the DC reference voltage of unit i+1 and leakage current, relay K a is placed in to the output port i of relay card extender, relay K b is placed in the output port i+1 of relay card extender, relay K c is placed in the output port i-1 of relay card extender, by industrial computer, regulate high voltage direct current generator and positive and negative adjustable DC power supply, the current value that makes reometer A1 is 16mA, the current value of reometer A2 is 8mA simultaneously, conventionally the voltage of high voltage direct current generator is much larger than the voltage of positive and negative adjustable DC power supply, can ignore the leakage current in unit i+2, the now voltage of high voltage direct current generator, be lightning arrester unit i(i=2, 3) DC reference voltage when reference current is 8mA, the voltage that the voltage of high voltage direct current generator deducts positive and negative adjustable DC power supply is the DC reference voltage of lightning arrester unit i+1 when reference current is 8mA, by industrial computer, regulating the output valve of positive and negative adjustable DC power supply is zero, and then by industrial computer, regulating the output voltage of high voltage direct current generator is the 0.75U of unit i+1
8mA, now the reading of reometer A2 is the 0.75U of unit i+1
8mAunder leakage current, the output valve that keeps positive and negative adjustable DC power supply is zero, and by industrial computer, regulating the output voltage of high voltage direct current generator is the 0.75U of unit i
8mA, now the current value of reometer A1 deducts the current value of reometer A2, is the 0.75U of unit i
8mAunder leakage current.Wherein, the data of reometer A1 and reometer A2 can read by communication module and photoelectric isolation module;
2c) the situation of measuring unit 4 and unit 5,
If DC reference voltage and the leakage current of test lightning arrester unit 4 and unit 5, relay K a is placed in to the output port 4 of relay card extender, relay K b is placed in the output port 3 of relay card extender, relay K c is placed in the output port 5 of relay card extender, by industrial computer, regulate high voltage direct current generator and positive and negative adjustable DC power supply, the current value that makes reometer A1 is 16mA, the current value of reometer A2 is 8mA simultaneously, conventionally the voltage of high voltage direct current generator is much larger than the voltage of positive and negative adjustable DC power supply, can ignore the leakage current in unit 3, the now voltage of high voltage direct current generator, be the DC reference voltage of lightning arrester unit 5 when reference current is 8mA, the voltage that the voltage of high voltage direct current generator deducts positive and negative adjustable DC power supply is the DC reference voltage of lightning arrester unit 4 when reference current is 8mA, by industrial computer, regulating the output valve of positive and negative adjustable DC power supply is zero, and then by industrial computer, regulating the output voltage of high voltage direct current generator is the 0.75U of unit 5
8mA, now the reading of reometer A2 is the 0.75U of unit 5
8mAunder leakage current, the output valve that keeps positive and negative adjustable DC power supply is zero, and by industrial computer, regulating the output voltage of high voltage direct current generator is the 0.75U of unit 4
8mA, now the current value of reometer A1 deducts the current value of reometer A2, is the 0.75U of unit 4
8mAunder leakage current.Wherein, the data of reometer A1 and reometer A2 can read by communication module and photoelectric isolation module.
In sum, the primary connection device of D.C. reference voltage of arrester of the present utility model, the test of leakage DC current, easy-to-connect, primary connection can complete all pilot projects, avoid repeatedly changing instrument, change wiring, shorten the time that needs power failure, time saving and energy saving, have a good application prospect.
More than show and described ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the primary connection device of test 1000kV lightning arrester reference voltage and leakage current, it is characterized in that: comprise industrial computer, communication module, high voltage direct current generator, positive and negative adjustable DC power supply, reometer A1, reometer A2 and relay card extender, described industrial computer is connected with positive and negative adjustable DC power supply with high voltage direct current generator respectively by communication module, carries out data communication; After being in series by cable with reometer A1, described high voltage direct current generator is connected with the relay K a on relay card extender; After being in series by cable with reometer A2, described positive and negative adjustable DC power supply is connected with the relay K b on relay card extender; Described relay card extender also comprises relay K c in order to ground connection; Described relay card extender is provided with 6 output interfaces and is connected with tested lightning arrester by p-wire.
2. the primary connection device of test 1000kV lightning arrester reference voltage according to claim 1 and leakage current, is characterized in that: described communication module carries out data communication by photoelectric isolation module and industrial computer, reometer A1, reometer A2, high voltage direct current generator, positive and negative adjustable DC power supply; Described photoelectric isolation module is for converting the electrical signal to light signal and convert light signal to electric signal at data communication process, and opposing electromagnetic interference (EMI); Described communication module is for carrying out filtering and AD/DA conversion to electric signal.
3. the primary connection device of test 1000kV lightning arrester reference voltage according to claim 1 and leakage current, it is characterized in that: described relay card extender according to testing requirement by relay K a, thereby relay K b and relay K c join and are communicated with corresponding p-wire from different output interfaces.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723271.0U CN203551643U (en) | 2013-11-13 | 2013-11-13 | One-time wiring apparatus for testing reference voltage and leakage current of 1000-kV lightning arrester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320723271.0U CN203551643U (en) | 2013-11-13 | 2013-11-13 | One-time wiring apparatus for testing reference voltage and leakage current of 1000-kV lightning arrester |
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| CN203551643U true CN203551643U (en) | 2014-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630729A (en) * | 2013-11-13 | 2014-03-12 | 国家电网公司 | One-step wiring device and method for testing 1000kV lightning arrester reference voltage and leakage current |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630729A (en) * | 2013-11-13 | 2014-03-12 | 国家电网公司 | One-step wiring device and method for testing 1000kV lightning arrester reference voltage and leakage current |
| CN103630729B (en) * | 2013-11-13 | 2015-12-30 | 国家电网公司 | The primary connection device and method of test 1000kV lightning arrester reference voltage and leakage current |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20191113 |