CN204086470U - A kind of high-performance low-voltage filter capacitor overpressure resistance detecting device - Google Patents
A kind of high-performance low-voltage filter capacitor overpressure resistance detecting device Download PDFInfo
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- CN204086470U CN204086470U CN201420445818.XU CN201420445818U CN204086470U CN 204086470 U CN204086470 U CN 204086470U CN 201420445818 U CN201420445818 U CN 201420445818U CN 204086470 U CN204086470 U CN 204086470U
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Abstract
The utility model relates to a kind of high-performance low-voltage filter capacitor overpressure resistance detecting device, by main circuit breaker QF, control micro-disconnected K, pressure regulator TBK, pressure regulator motor M, transformer BK, PLC, contactor KM1-KM6, charging resistor R, discharge resistance R0 and metering current sensor THA-THC, protection detect current sensor LHa, LHc, intelligent voltage Table V, Intelligent current Table A form.This device realizes the resistance test to capacitor, can not only voltage after simulation system harmonic superposition, the withstand voltage routine test of capacitor can also be carried out with reference to Standard, by the secondary voltage of adjustment pressure regulator TBK, control the output voltage of main-transformer BK, carry out step-down, until voltage is zero, capacitor residual voltage is by KM4 and R0 electric discharge simultaneously, until be zero.
Description
Technical field
The utility model belongs to electric power project engineering field, be applicable to reactive power compensation filtering device dispatch from the factory before the withstand voltage simulation test of capacitor, examine the withstand voltage Bearing degree of the low-voltage filter capacitor in filter, whether meet field demand, improve the operational reliability of compensation filter equipment, particularly relate to a kind of high-performance low-voltage filter capacitor overpressure resistance detecting device.
Background technology
In commercial production and daily life, use the power electronic equipment nonlinear load of various rectification function widely, these nonlinear loads produce a large amount of harmonic current and harmonic voltage, inject the normal safe that electrical network directly can have influence on electrical network and user's electrical equipment to run, and to install AC filter installation additional be one of the effective measures of administering harmonic pollution in electric power net.Traditional passive power filter, because its structure is simple, small investment, operational reliability are high and operating cost is lower, are still the Main Means of harmonics restraint so far.And, due to lack dispatch from the factory before the voltage-withstand test of capacitor, in the middle of often running at the scene, due to system harmonics voltage superposition, the overvoltage of capacitor caused and occur capacitor bulge, leakage of oil, capacitance decay, cause tuned frequency to lack of proper care, thus cause the series of problems such as system oscillation, potential safety hazard is existed to electrical network.
By retrieval, do not have to find the patent document identical with the utility model.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of high-performance low-voltage filter capacitor overpressure resistance detecting device, and this device can not only voltage after simulation system harmonic superposition, can also carry out the withstand voltage routine test of capacitor with reference to Standard.
The purpose of this utility model is achieved by the following technical solution:
A kind of high performance capacitor overpressure resistance detecting device, by main circuit breaker QF, control micro-disconnected K, pressure regulator TBK, pressure regulator motor M, transformer BK, PLC, contactor KM1-KM6, charging resistor R, discharge resistance R0 and metering current sensor THA-THC, protection detects current sensor LHa, LHc, intelligent voltage Table V, Intelligent current Table A forms, the concrete annexation of each electrical equipment is: three-phase alternating-current supply L1 ~ L3 is by current sensor LHa, LHc is connected to main circuit breaker QF, control micro-disconnected K, the KM1 inlet wire of contactor is connected to by closed main circuit breaker QF, pressure regulator TBK primary side is received in its outlet, the out secondary of pressure regulator TBK is connected to the primary voltage of main step-up transformer BK by current sensor THa ~ THc, one tunnel of the secondary voltage of main-transformer BK is connected with measured capacitance device through contactor KM2, separately lead up to contactor KM3, KM4 and charging resistor R, discharge resistance R0 is in parallel with measured capacitance device, being connected to the three-phase supply controlling micro-disconnected K adopts parallel way to connect pressure regulator motor M respectively by contactor KM5, KM6 by PLC.
And, in the secondary electrical pressure side of main step-up transformer, intelligent voltage Table V is also housed.
Advantage of the present utility model and good effect are:
1, this device realizes the resistance test to capacitor, can not only voltage after simulation system harmonic superposition, the withstand voltage routine test of capacitor can also be carried out with reference to Standard, by the secondary voltage of adjustment pressure regulator TBK, control the output voltage of main-transformer BK, carry out step-down, until voltage is zero, capacitor residual voltage is by KM4 and R0 electric discharge simultaneously, until be zero.
2, this device is in withstand voltage operating process, by the control of PLC, carries out safe precise manipulation; Can be clearly illustrated in process of the test with detecting by the metering of THA-THC, LHa, Lhc current sensor and intelligent voltage table, reometer simultaneously; the real-time parameter of condenser current, voltage; and the protections such as corresponding execution overcurrent, overvoltage, guarantee the personal safety of operating personnel.
3, this device is with digital current display, voltage display, and according to the capacity of equipment under test, can clearly illustrate in boost process continuously, the change of voltage, electric current and temperature, area be little, easy to operate, can steady pressure regulation 0 ~ 2500V; Possess the protections such as overvoltage, overcurrent, excess temperature, ground connection and protection against electric shock simultaneously.Very safe and reliable in operating process, under meeting 660V system the filter capacitor of any passive filtering compensation equipment dispatch from the factory before detection data, improve passive filtering compensation equipment scene run security, filled up domestic blank.
Accompanying drawing explanation
Fig. 1 is the utility model full-automatic reacance generator primary system figure.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described; The present embodiment is descriptive, is not determinate, can not limit protection domain of the present utility model thus.
A kind of high-performance low-voltage filter capacitor overpressure resistance detecting device, by main circuit breaker QF, control micro-disconnected K, pressure regulator TBK, pressure regulator motor M, transformer BK, PLC, contactor KM1-KM6, charging resistor R, discharge resistance R0 and metering current sensor THA-THC, protection detects current sensor LHa, LHc, intelligent voltage Table V, the components and parts compositions such as Intelligent current Table A, the concrete annexation of each element is: three-phase alternating-current supply L1 ~ L3 is by current sensor LHa, LHc is connected to main circuit breaker QF, control micro-disconnected K, the KM1 inlet wire of contactor is connected to by closed main circuit breaker QF, pressure regulator TBK primary side is received in its outlet, the out secondary of pressure regulator TBK is connected to the primary voltage of main step-up transformer BK by current sensor THa ~ THc, observe at the beginning of pressure regulator by the reading observing Intelligent current Table A, the curent change of secondary inter-stage, once exceed setting value, device exits automatically, the current indication of this Intelligent current table is sampled from current sensor LHa, LHc, THA ~ C, one tunnel of the secondary voltage of main-transformer BK is connected with measured capacitance device through contactor KM2, separately lead up to contactor KM3, KM4 and charging resistor R, discharge resistance R0 in parallel with measured capacitance device, play test before precharge, to capacitor protection and test after electric discharge, operating personnel are protected.
Being connected to the three-phase supply controlling micro-disconnected K adopts parallel way to connect pressure regulator motor M respectively by contactor KM5, KM6 by PLC.
In the secondary electrical pressure side of main step-up transformer, intelligent voltage Table V is also housed, as real-time monitoring during transformer boost, exceed setting value once voltage, device exits automatically.
Principle of work of the present utility model is:
First closed main circuit breaker QF, then the micro-disconnected K of closed system, then PLC control program is started, KM1 adhesive, measured capacitance device carries out precharge by KM3 and R, through the time delay of 10 seconds, and KM2, KM5 action, by the secondary voltage of pressure regulation motor M adjustment pressure regulator TBK, the output voltage controlling main-transformer BK thus boosts; Capacitor boost to ratings, after reaching the stipulated time, by PLC control program, KM6 action, by pressure regulation motor M, the secondary voltage of adjustment pressure regulator TBK controls the output voltage of main-transformer BK, carries out step-down, until voltage is zero; Capacitor residual voltage is discharged, until be zero by KM4 and R0.
Claims (2)
1. a high-performance low-voltage filter capacitor overpressure resistance detecting device, is characterized in that: by main circuit breaker QF, control micro-disconnected K, pressure regulator TBK, pressure regulator motor M, transformer BK, PLC, contactor KM1-KM6, charging resistor R, discharge resistance R0 and metering current sensor THA-THC, protection detects current sensor LHa, LHc, intelligent voltage Table V, Intelligent current Table A forms, and the concrete annexation of each electrical equipment is: three-phase alternating-current supply L1 ~ L3 is by current sensor LHa, LHc is connected to main circuit breaker QF, control micro-disconnected K, the KM1 inlet wire of contactor is connected to by closed main circuit breaker QF, pressure regulator TBK primary side is received in its outlet, the out secondary of pressure regulator TBK is connected to the primary voltage of main step-up transformer BK by current sensor THa ~ THc, one tunnel of the secondary voltage of main-transformer BK is connected with measured capacitance device through contactor KM2, separately leads up to contactor KM3, KM4 and charging resistor R, discharge resistance R0 is in parallel with measured capacitance device, being connected to the three-phase supply controlling micro-disconnected K adopts parallel way to connect pressure regulator motor M respectively by contactor KM5, KM6 by PLC.
2. high-performance low-voltage filter capacitor overpressure resistance detecting device according to claim 1, is characterized in that: in the secondary electrical pressure side of main step-up transformer, intelligent voltage Table V is also housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445818.XU CN204086470U (en) | 2014-08-07 | 2014-08-07 | A kind of high-performance low-voltage filter capacitor overpressure resistance detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445818.XU CN204086470U (en) | 2014-08-07 | 2014-08-07 | A kind of high-performance low-voltage filter capacitor overpressure resistance detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086470U true CN204086470U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420445818.XU Expired - Fee Related CN204086470U (en) | 2014-08-07 | 2014-08-07 | A kind of high-performance low-voltage filter capacitor overpressure resistance detecting device |
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| Country | Link |
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| CN (1) | CN204086470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885972A (en) * | 2015-12-16 | 2017-06-23 | 中国二十冶集团有限公司 | Hv filtering compensation device entirety voltage-withstand test method |
| CN107144787A (en) * | 2017-04-24 | 2017-09-08 | 华北电力大学 | The generator insulating detection means and detection method of a kind of permanent-magnetic wind driven generator |
-
2014
- 2014-08-07 CN CN201420445818.XU patent/CN204086470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885972A (en) * | 2015-12-16 | 2017-06-23 | 中国二十冶集团有限公司 | Hv filtering compensation device entirety voltage-withstand test method |
| CN106885972B (en) * | 2015-12-16 | 2019-12-03 | 中国二十冶集团有限公司 | Hv filtering compensation device entirety voltage-withstand test method |
| CN107144787A (en) * | 2017-04-24 | 2017-09-08 | 华北电力大学 | The generator insulating detection means and detection method of a kind of permanent-magnetic wind driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20190807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |