CN104237826A - Portable simulation resistor for calibration of direct current system insulation monitoring device - Google Patents
Portable simulation resistor for calibration of direct current system insulation monitoring device Download PDFInfo
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- CN104237826A CN104237826A CN201410456918.7A CN201410456918A CN104237826A CN 104237826 A CN104237826 A CN 104237826A CN 201410456918 A CN201410456918 A CN 201410456918A CN 104237826 A CN104237826 A CN 104237826A
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Abstract
The invention discloses a portable simulation resistor for calibration of a direct current system insulation monitoring device. The portable simulation resistor comprises a box body, eight lead columns arranged on the box body, seven resistors which are connected in series and are arranged in the box body, a shorting stub used for connecting two lead columns and a connecting wire used for connecting one lead column and the direct current system insulation monitoring device. The bottom ends of all the lead columns are connected with leads between every two resistors, and the top ends of all the lead columns are exposed out of the box body. When the portable simulation resistor is used, the connecting wire is used for connecting the corresponding lead column and the direct current system insulation monitoring device, the shorting stub is used for connecting the two different lead columns, and at last through permutation and combination of different resistance values, the resistors of various resistance values can be simulated. Needed resistance values can be adjusted conveniently and quickly in the testing process of the direct current insulation monitoring device, the reliability of the insulation monitoring device is calibrated accurately and quickly, and the calibration speed and accuracy of a direct current insulation device are greatly improved.
Description
Technical field
The present invention relates to a kind of portable simulation resistor for Insulation Inspection Device for Direct-Current System verification, belong to technical field of power systems.
Background technology
Straight-flow system, as the main power source system of transformer station, is responsible for and uninterruptedly provides reliable galvanic effect to miscellaneous equipment, and straight-flow system mainly comprises charging screen, feed panel, accumulator.Insulation monitoring and warning device wherein in feed panel is mainly through automatically measuring insulation resistance resistance to differentiate insulation status in whole electric system (comprising the DC ground fault because a variety of causes causes and the situation such as low that insulate), for fast finding trouble spot, remove a hidden danger in time, improve straight-flow system safety coefficient, therefore, the reliability of insulation monitoring and warning device directly has influence on the safe operation of electric system, before straight-flow system drops into, runs when inspecting and effectively differentiates that its reliability then becomes examinations, overhauls the leading indicator of insulation monitoring and warning device.
Because electric system DC voltage level is different, comprise 220V, 110V, 48V etc., for the straight-flow system of different electric pressure, the stake resistance working value of insulation monitoring and warning device DC ground fault signal is also different, 220V system earth resistance working value is 25 kilo-ohms, 110V system is 7 kilo-ohms, 48V system is 1.7 kilo-ohms (sometimes also not identical according to the grounding resistance of different electric power standard identical electric pressure straight-flow system), current Insulation Inspection Device for Direct-Current System extensively adopts balance bridge principle to monitor DC earthing as shown in Figure 1: resistance R1 ＇ in figure, R2 ＇ and relay J are the elementary cells of composition insulation monitoring and warning device, usual R1 ＇ is equal with R2 ＇ resistance value, be 1K Ω, relay J selects DC low current relay, resistance R+ and R-is the resistance to earth of straight-flow system positive pole and negative pole respectively.Under normal circumstances, R+ and R-is infinity, insulation monitoring and warning device not alarm, only have when occurring DC earthing in system or in the low situation that insulate, just accuse insulation low signal, therefore put into operation in electric substation, in the straight-flow system course of receiving, then need to insulation monitoring and warning device series resistor R ＇ in order to verify the accuracy of insulation monitoring and warning device warning value, therefore multiple resistance value is needed for same electric pressure to test, in this case, the resistance carrying all different numerical value is all needed before each test, and all scattered placement of all resistance, this not only increases labor capacity, also increase the probability that parts are lost, to manpower, material resources cause certain waste.
In view of this, the present inventor studies this, and develop a kind of portable adjustable simulation resistor for Insulation Inspection Device for Direct-Current System verification specially, this case produces thus.
Summary of the invention
The object of this invention is to provide a kind of portable adjustable simulation resistor for Insulation Inspection Device for Direct-Current System verification, easy to carry, resistance is adjustable, greatly can improve insulation monitoring and warning device insulating resistance value testing efficiency.
To achieve these goals, solution of the present invention is:
A kind of portable adjustable simulation resistor for Insulation Inspection Device for Direct-Current System verification, comprise box body, be arranged on 8 wire columns on box body, be arranged on 7 resistance of mutually connecting in box body, for connecting the shorting stub of two wire columns, and for connecting the connecting line of wire column and Insulation Inspection Device for Direct-Current System, the bottom of each wire column is connected with the wire between adjacent two resistance respectively, the top of each wire column is exposed at outside box body, and described resistance comprises the first resistance that resistance is 1.5K Ω, resistance is second resistance of 2K Ω, resistance is the 3rd resistance of 3K Ω, resistance is the 4th resistance of 9K Ω, resistance is the 5th resistance of 10K Ω, 7th resistance of resistance to be the 6th resistance of 15K Ω and resistance be 20K Ω, described wire column comprises and is successively set on the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, the second wire column between 6th resistance and the 7th resistance, privates post, privates post, 5th wire column, 6th wire column, 7th wire column, and be arranged on the first resistance top, first wire column of the 7th resistance end and the 8th wire column.
When the above-mentioned portable adjustable simulation resistor for Insulation Inspection Device for Direct-Current System verification uses, be connected with Insulation Inspection Device for Direct-Current System by the wire column of connecting line by correspondence, two different wire columns are connected by shorting stub, and then the resistance between these two wire columns is carried out short circuit, finally by the permutation and combination of different resistance values, the resistance of various resistance can be simulated, the resistance value of needs can be transferred to quickly and easily in D.C. isolation monitoring device test process, and receive analog DC ground connection in DC feeder branch road, verify the reliable of insulation monitoring and warning device quickly and accurately, substantially increase D.C. isolation device verification speed and accuracy.
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is Insulation Inspection Device for Direct-Current System of the prior art verification schematic diagram;
Fig. 2 is the portable adjustable simulation resistor front elevation of the present embodiment;
Fig. 3 is the portable adjustable simulation resistor electrical schematic diagram of the present embodiment;
Fig. 4 is the Insulation Inspection Device for Direct-Current System verification schematic diagram of the present embodiment.
Embodiment
As shown in Figure 2, a kind of portable adjustable simulation resistor for Insulation Inspection Device for Direct-Current System verification, comprise box body 1, be arranged on 8 wire columns on box body, be arranged on 7 resistance of mutually connecting in box body 1, for connecting the shorting stub 2 of two wire columns, and for connecting the connecting line 3 of wire column and Insulation Inspection Device for Direct-Current System, the bottom of each wire column is connected with the wire between adjacent two resistance respectively, the top of each wire column is exposed at outside box body, and described resistance comprises the first resistance R1 that resistance is 1.5K Ω, resistance is the second resistance R2 of 2K Ω, resistance is the 3rd resistance R3 of 3K Ω, resistance is the 4th resistance R4 of 9K Ω, resistance is the 5th resistance R5 of 10K Ω, the 7th resistance R7 of resistance to be the 6th resistance R6 of 15K Ω and resistance be 20K Ω, described wire column comprises and is successively set on the first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, the second wire column 4b between 6th resistance R6 and the 7th resistance R7, privates post 4c, privates post 4d, 5th wire column 4e, 6th wire column 4f, 7th wire column 4g, and be arranged on the first resistance R1 top, first wire column 4a of the 7th resistance R7 end and the 8th wire column 4h.
As shown in Figure 3, when shorting stub 2 is inserted between the 3rd binding post 4c and the 8th binding post 4h, then the 3rd resistance R3 ~ the 7th resistance R7 is 0 by short circuit resistance, first binding post 4a and the 8th binding post 4h draws resistance calculations: R1+R2+0=1.5K+2K+0=3.5K, therefore the portable adjustable simulation resistor of this Insulation Inspection Device for Direct-Current System verification, available resistance value comprises (following unit is K Ω):
1.5+2＝3.5 2+3＝5 3+9＝12 9+10＝19 10+15＝25
1.5+3＝4.5 2+9＝11 3+10＝13 9+15＝24 10+20=30
1.5+9＝10.5 2+10＝12 3+15＝18 9+20＝29 15+20=35
1.5+10＝11.5 2+15＝17 3+20＝23
1.5+15＝16.5 2+20+22
1.5+20＝21.5
1.5+2+3=6.5
1.5+2+3+9=15.5
1.5+2+3+9+10=25.5
1.5+2+3+9+10+15=40.5
1.5+2+3+9+10+15+20=60.5
2+3+9=14
2+3+9+10=24
2+3+9+10+15=39
2+3+9+10+15+20=59
3+9+10=22
3+9+10+15=37
3+9+10+15+20=57
9+10+15=34
9+10+15+20=54
10+15+20=45
From above resistance value, some shorting stubs are utilized to insert different binding posts, resistance between short circuit insertion point, or directly extract any two binding posts, above 36 kinds of resistance values can be simulated, add between every two binding posts, the 1.5K Ω itself had separately, 2K Ω, 3K Ω, 9K Ω, 10K Ω, 15K Ω, 20K Ω resistance, portable adjustable simulation resistor then described in the present embodiment can simulate altogether 43 kinds of resistance values, for the Insulation Inspection Device for Direct-Current System of various criterion and different electric pressure, all portablely can effectively utilize different numerical value resistance verification straight-flow system seal alarm working value.
Adopt the portable adjustable simulation resistor verification Insulation Inspection Device for Direct-Current System method described in the present embodiment as follows, as shown in Figure 4, consistent with verification straight-flow system negative pole F ground connection principle owing to testing straight-flow system positive pole E ground connection, and for the Insulation Inspection Device for Direct-Current System J of various criterion and different electric pressure, as long as change resistance of the present invention combination can realize as described above, therefore with analog DC system insulation device alarm resistance value for 25K Ω, straight-flow system plus earth is that example illustrates, method of operating is as follows:
Because straight-flow system seal J alarm resistance value is 25K Ω, then extract the resistance between portable simulation resistor the 5th binding post 4e and the 7th binding post 4g, as above narrate, between the 5th binding post 4e and the 7th binding post 4g, resistance is R5+R6=10K+15K=25K, 5th binding post 4e is connected to the E point of exhausted straight-flow system, by the 7th binding post 4g to the earth point of exhausted straight-flow system, analog DC system plus earth, when now insulation monitoring and warning device J sends alarm signal, then be judged to be that insulation monitoring and warning device alarm is normal, when the non-alarm of insulation monitoring and warning device, can again test by combined resistance, until insulation monitoring and warning device alarm, resistance is now the actual warning value of insulation monitoring and warning device.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (1)
1. the portable adjustable simulation resistor for Insulation Inspection Device for Direct-Current System verification, it is characterized in that: comprise box body, be arranged on 8 wire columns on box body, be arranged on 7 resistance of mutually connecting in box body, for connecting the shorting stub of two wire columns, and for connecting the connecting line of wire column and Insulation Inspection Device for Direct-Current System, the bottom of each wire column is connected with the wire between adjacent two resistance respectively, the top of each wire column is exposed at outside box body, described resistance comprises the first resistance that resistance is 1.5K Ω, resistance is second resistance of 2K Ω, resistance is the 3rd resistance of 3K Ω, resistance is the 4th resistance of 9K Ω, resistance is the 5th resistance of 10K Ω, 7th resistance of resistance to be the 6th resistance of 15K Ω and resistance be 20K Ω, described wire column comprises and is successively set on the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, the second wire column between 6th resistance and the 7th resistance, privates post, privates post, 5th wire column, 6th wire column, 7th wire column, and be arranged on the first resistance top, first wire column of the 7th resistance end and the 8th wire column.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410456918.7A CN104237826A (en) | 2014-09-10 | 2014-09-10 | Portable simulation resistor for calibration of direct current system insulation monitoring device |
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| CN201410456918.7A CN104237826A (en) | 2014-09-10 | 2014-09-10 | Portable simulation resistor for calibration of direct current system insulation monitoring device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793164A (en) * | 2015-03-31 | 2015-07-22 | 国家电网公司 | Branch insulation warning function verifying device of direct-current system |
| CN106646317A (en) * | 2017-02-14 | 2017-05-10 | 国网新疆电力公司伊犁供电公司 | Portable DC insulation detector test device |
| CN106771782A (en) * | 2017-02-10 | 2017-05-31 | 国家电网公司 | A kind of experimental rig and method for simulating distinct device insulaion resistance and absorption process |
| CN107643502A (en) * | 2017-09-26 | 2018-01-30 | 广西电网有限责任公司电力科学研究院 | A kind of high-voltage electrical apparatus detecting instrument check device |
| CN110220925A (en) * | 2019-06-11 | 2019-09-10 | 中国电子科技集团公司第十三研究所 | Radiometer front-end architecture |
| CN113466707A (en) * | 2021-07-26 | 2021-10-01 | 国网四川省电力公司电力科学研究院 | Calibration battery and method for field calibration storage battery inspection device |
| CN113589210A (en) * | 2021-08-27 | 2021-11-02 | 广东电网有限责任公司 | Portable grounding test device and method for DC power supply system for plant station |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202307391U (en) * | 2011-10-28 | 2012-07-04 | 江阴百士特控制显示设备有限公司 | Resistor box |
| CN202494775U (en) * | 2012-03-28 | 2012-10-17 | 广州优维电子科技有限公司 | Calibrator for DC system insulation device |
| CN102879755A (en) * | 2012-09-20 | 2013-01-16 | 保定供电公司 | Testing instrument for acting performance of insulation monitoring device |
| CN202794495U (en) * | 2012-10-11 | 2013-03-13 | 曹宇亮 | Passive simulation type standard resistor capable of simulating four-terminal standard resistor |
| CN203037840U (en) * | 2013-01-18 | 2013-07-03 | 海南英利新能源有限公司 | Insulation resistor test device calibrating device |
| CN203588779U (en) * | 2013-12-07 | 2014-05-07 | 国家电网公司 | Portable resistance box |
| CN204086512U (en) * | 2014-09-10 | 2015-01-07 | 国家电网公司 | A kind of portable simulation resistor for Insulation Inspection Device for Direct-Current System verification |
-
2014
- 2014-09-10 CN CN201410456918.7A patent/CN104237826A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202307391U (en) * | 2011-10-28 | 2012-07-04 | 江阴百士特控制显示设备有限公司 | Resistor box |
| CN202494775U (en) * | 2012-03-28 | 2012-10-17 | 广州优维电子科技有限公司 | Calibrator for DC system insulation device |
| CN102879755A (en) * | 2012-09-20 | 2013-01-16 | 保定供电公司 | Testing instrument for acting performance of insulation monitoring device |
| CN202794495U (en) * | 2012-10-11 | 2013-03-13 | 曹宇亮 | Passive simulation type standard resistor capable of simulating four-terminal standard resistor |
| CN203037840U (en) * | 2013-01-18 | 2013-07-03 | 海南英利新能源有限公司 | Insulation resistor test device calibrating device |
| CN203588779U (en) * | 2013-12-07 | 2014-05-07 | 国家电网公司 | Portable resistance box |
| CN204086512U (en) * | 2014-09-10 | 2015-01-07 | 国家电网公司 | A kind of portable simulation resistor for Insulation Inspection Device for Direct-Current System verification |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793164A (en) * | 2015-03-31 | 2015-07-22 | 国家电网公司 | Branch insulation warning function verifying device of direct-current system |
| CN106771782A (en) * | 2017-02-10 | 2017-05-31 | 国家电网公司 | A kind of experimental rig and method for simulating distinct device insulaion resistance and absorption process |
| CN106771782B (en) * | 2017-02-10 | 2024-03-22 | 国家电网公司 | Test device and method capable of simulating insulation resistance and absorption process of different equipment |
| CN106646317A (en) * | 2017-02-14 | 2017-05-10 | 国网新疆电力公司伊犁供电公司 | Portable DC insulation detector test device |
| CN107643502A (en) * | 2017-09-26 | 2018-01-30 | 广西电网有限责任公司电力科学研究院 | A kind of high-voltage electrical apparatus detecting instrument check device |
| CN110220925A (en) * | 2019-06-11 | 2019-09-10 | 中国电子科技集团公司第十三研究所 | Radiometer front-end architecture |
| CN113466707A (en) * | 2021-07-26 | 2021-10-01 | 国网四川省电力公司电力科学研究院 | Calibration battery and method for field calibration storage battery inspection device |
| CN113589210A (en) * | 2021-08-27 | 2021-11-02 | 广东电网有限责任公司 | Portable grounding test device and method for DC power supply system for plant station |
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Application publication date: 20141224 |
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