CN103698695A - Multifunctional electrical characteristic testing device and testing method for high-voltage circuit breaker - Google Patents

Multifunctional electrical characteristic testing device and testing method for high-voltage circuit breaker Download PDF

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Publication number
CN103698695A
CN103698695A CN201310412010.1A CN201310412010A CN103698695A CN 103698695 A CN103698695 A CN 103698695A CN 201310412010 A CN201310412010 A CN 201310412010A CN 103698695 A CN103698695 A CN 103698695A
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China
Prior art keywords
resistance
voltage
testing
switching
detection
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CN201310412010.1A
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Chinese (zh)
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CN103698695B (en
Inventor
夏小飞
邓雨荣
黄金剑
陈庆发
鲁铁成
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广西电网公司电力科学研究院
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Abstract

The invention discloses a multifunctional electrical characteristic testing device and a multifunctional electrical characteristic testing method for a high-voltage circuit breaker. The testing device consists of a dynamic resistance detection module, a non-synchronism detection module, a displacement sensor, Hall current sensors, a data acquisition card, an industrial control computer and an industrial display screen, wherein a super capacitor is used as a power supply for the detection of loop resistance, and impact current with a peak value of 1,000A is used as detection current. The testing device is a multifunctional testing instrument integrating the detection of loop resistance, closing resistance, closing resistance running time and mechanical characteristics of the high-voltage circuit breaker.

Description

The electric characteristic test device of multifunctional high pressure isolating switch and method of testing thereof

Technical field

The present invention relates to primary cut-out field, especially relate to a kind of primary cut-out electrical characteristic test device and method of testing thereof.

Background technology

Primary cut-out is most important a kind of electrical equipment in High-Voltage Electrical Appliances.In the primary equipment of electric system, with regard to single device, isolating switch is the large scale electrical power unit that is only second to generator and transformer, but with regard to needing the investment of quantity and shared power station equipment, before it comes both again.Therefore the reliability of isolating switch performance is related to the safe operation of electric system.

Primary cut-out electrical specification comprises loop resistance, switching-on resistance, switching-on resistance making time, breaker mechanic property etc.But current detecting instrument is all that certain aspect for isolating switch designs, and needs to change multiple instrument when isolating switch is carried out to complete detection, has caused the waste of many manpower and materials.Thereby be necessary to design a kind of detecting instrument of telotism, to improve labor productivity.

In addition, during measuring circuit resistance, conventionally the power supply adopting is direct supply, but direct supply is because generate heat quantitative limitation, general interior energy output current value is less, and the resistance of loop resistance own is very little, will make so the measured electric signal obtaining very little, be difficult to meet and on-the-spotly accurately gather, and little electric current cannot remove the oxide film on contact, make on the contrary measured value bigger than normal.Thereby to adopt heavy impulse current to carry out on-the-spot loop resistance measurement be effective measure.

Summary of the invention

The present invention proposes accurate, the multiple functional electric characteristic test device of multifunctional high pressure isolating switch of a set of measurement.This device can be measured the electrical specifications such as making time, loop resistance and mechanical property of primary cut-out switching-on resistance and switching-on resistance.

The electric characteristic test device of multifunctional high pressure isolating switch of the present invention comprises these several parts of dynamic resistance detection module, asynchrony detection module, displacement transducer, Hall current sensor, data collecting card, industrial control computer and industrial LCD.Wherein utilize data collecting card to carry out data acquisition, utilize industrial control computer to carry out data computing, utilize industrial LCD to carry out man-machine interaction.

Further, dynamic resistance detection module consists of power source charges control circuit and dynamic resistance testing circuit in invention.Wherein, power source charges control circuit includes ultracapacitor, solid-state relay, ultracapacitor charging set and voltage sensor; Dynamic resistance testing circuit includes relay, voltage sensor, thyristor, shunt, measuring resistance and isolating switch to be measured.

Further, measuring resistance is for the detection of switching-on resistance, and shunt is for the detection of loop resistance; Loop resistance measurement electric current is that peak value is up to the dash current of 1000A; Measuring resistance is the large resistance of 500 Ω, the shunt that shunt adopts micro-ohm level further, in dynamic resistance detects, when closing of power circuit breaker, first access switching-on resistance, then access loop resistance, switching-on resistance and loop resistance all adopt voltage-ratio method to detect, i.e. testing resistance R xwith a known resistance R 1measuring resistance series connection, measure both voltage, according to obtain R x, the difference in switching-on resistance and loop resistance detect is that while surveying switching-on resistance, measuring resistance used is the large resistance of 500 Ω, and what adopt while surveying loop resistance is the shunt of micro-ohm level.

When voltage on capacitor reaches 20V, loop resistance detects current peak and reaches 1000A, and current waveform is surge waveform; By detecting the isolating switch both end voltage time from large to small, just can obtain switching-on resistance making time.

Voltage signal carries out entering in data collecting card and processing after filter and amplification with voltage sensor.

Further, adopt resistance-type linear displacement transducer, detect primary cut-out stroke characteristic; Adopt Hall current sensor to detect divide-shut brake coil current characteristic;

Further, in three-phase asynchrony detects, at each phase fracture two ends of isolating switch, add Switching Power Supply, and respectively connect with a current-limiting resistance, by voltage sensor senses fracture voltage, detect the poor three-phase asynchrony that obtains of each phase fracture voltage value transformation period.

The invention has the beneficial effects as follows:

(1) invention realizes the primary cut-out electrical specification detections such as stroke characteristic, divide-shut brake current characteristics, divide-shut brake three-phase asynchrony, loop resistance, switching-on resistance and switching-on resistance making times such as detecting primary cut-out closing time, closing speed in a device, the work complexity of greatly having simplified staff, has improved work efficiency;

(2) adopt large electric current to make the accuracy of detection of loop resistance higher, compare testing result with other little current detecting instruments and have more cogency; And what loop resistance detected electric current employing is dash current, has solved well the heating problem of checking of great current, has improved the service efficiency of instrument;

(3) be applicable to the measurement of 500kV moving contact in high voltage breaker placement property, divide-shut brake current characteristics, three-phase asynchrony, switching-on resistance, loop resistance and switching-on resistance making time.

Accompanying drawing explanation

Fig. 1 is the electric characteristic test device structural drawing of invention multifunctional high pressure isolating switch;

Fig. 2 is that invention dynamic resistance detects loop;

Fig. 3 is invention three-phase asynchrony testing circuit.

Wherein:

1-ultracapacitor

2-solid-state relay

3-ultracapacitor charging set

4,8,9,10,13,14-relay

5-measuring resistance

6-shunt

7-thyristor

11,12,15,16,17,21,22,23-voltage sensor

18,19,20-primary cut-out A, B, C three-phase

24,25,26-current-limiting resistance

Embodiment

Below in conjunction with drawings and Examples, further illustrate.

One, the electric characteristic test device structure of multifunctional high pressure isolating switch

The electric characteristic test device structure of multifunctional high pressure isolating switch of the present invention, as shown in Figure 1.Comprise dynamic resistance detection module, displacement transducer, Hall current sensor 1, Hall current sensor 2, three-phase asynchrony detection module, data collecting card, industrial control computer and several parts of industrial LCD.Displacement transducer is selected NOVOtechnik TLH-600 linear displacement transducer, and moving contact in high voltage breaker displacement signal is converted to electric signal, by data collecting card, imports in industrial control computer; Hall current sensor 1 and Hall current sensor 2 are selected V121S07 Hall current sensor, for gathering high-voltage circuit-breaker switching on-off coil current signal; Dynamic resistance detection module utilizes voltage-ratio method can detect primary cut-out switching-on resistance and loop resistance, and the measurement variation of utilizing loop resistance to drop on the sensor 11 of front and back can record switching-on resistance making time; Three-phase asynchrony detection module can detect the three-phase asynchrony of isolating switch; Data collecting card (PCI-1716L), for gathering each road electric weight and non-electric charge quantity signalling, imports in industrial control computer (AIMB-766) and calculates, and industrial LCD (FPM-3060G) is for man-machine interaction.

Two, this apparatus measures method

(1) mechanical property detects and comprises the following steps:

A) displacement transducer is placed in to moving contact in high voltage breaker place, Hall current sensor 1 and Hall current sensor 2 are placed in respectively divide-shut brake coil place;

B) to close-minute operation of isolating switch;

C) displacement transducer and current sensor are measured respectively displacement signal and current signal, import signal into industrial control computer and carry out data calculating, and show result at industrial LCD.

(2), referring to Fig. 3, three-phase asynchrony detects and comprises the following steps:

A) voltage sensor 21,22,23 correspondences are positioned over to the fracture two ends of three-phase 18,19,20;

B) to close-minute operation of isolating switch;

C) on each phase fracture, voltage sensor data illustrate that when 5V becomes 0 fracture is closed, and industrial control computer calculates, the poor asynchrony that is three-phase of three-phase separate closing time.

(3), referring to Fig. 2, dynamic resistance detects and comprises the following steps:

A), user clicks after charge button on industrial LCD, relay 4 conductings on industrial control computer pilot relay output board, solid-state relay 2 connects and triggers conducting after power supply, 1 charging of 3 pairs of ultracapacitors of charging set, the charging voltage that voltage sensor 17 gathers on ultracapacitors 1, when the reading on voltage sensor 17 reaches preset value, relay 4 on relay output board disconnects, and solid-state relay 2 disconnects then, and charging set 3 stops ultracapacitor 1 charging.

B) first user, interface is set selects whether to measure switching-on resistance of industrial LCD, then press measurement button.As selected to be, first switching-on resistance drops into major loop, relay 8 on relay output board receives cut-off signal, thyristor 7 disconnects, and in measuring resistance 5 access main circuits, the relay 9,13 on relay output board receives closure signal, relay 10,14 on relay output board disconnects, voltage sensor 11,15 drops in metering circuit, the voltage signal that now voltage sensor 11 gathers in measuring resistance 5, the voltage that voltage sensor 15 gathers on primary cut-out; Industrial computer utilizes voltage-ratio method to get final product to obtain switching-on resistance value the voltage signal conducting electricity on pressure sensor 11,15.As select noly, perform step d

C) approximately about 8ms, in loop resistance input major loop.Now switching-on resistance is by short circuit, and sensor 11 is measured income value and sharply declined, and the time that the signal of industrial control computer calculating voltage sensor 11 sharply declines is switching-on resistance making time.Industrial control computer sends closure signal to the relay 8 on relay output board, thyristor 7 closures, shunt 6 drops in circuit, now because shunt 6 resistance values are very little, by measuring resistance 5 short circuits, industrial control computer sends cut-off signal to the relay 9,13 on relay output board, relay 10,14 on relay output board sends closure signal, now voltage sensor 12,16 drops into testing circuit, the measured value of industrial control computer based on voltage sensor 12,16, utilizes voltage-ratio method to get final product to obtain loop resistance value.

Claims (10)

1. the electric characteristic test device of multifunctional high pressure isolating switch, it is characterized in that, include displacement transducer, the first Hall current sensor, the second Hall current sensor, dynamic resistance detection module, three-phase asynchrony detection module, data collecting card, industrial control computer, wherein, displacement transducer, the first Hall current sensor, the second Hall current sensor, the primary cut-out electrical characteristic signal that dynamic resistance detection module and three-phase asynchrony detection module obtain detection imports in industrial control computer by data collecting card, described electrical specification is moving contact in high voltage breaker placement property, divide-shut brake current characteristics, three-phase asynchrony, switching-on resistance, switching-on resistance making time and loop resistance, displacement transducer is converted to electric signal by moving contact in high voltage breaker displacement signal, by data collecting card, import in industrial control computer, first, two Hall current sensors are used for gathering high-voltage circuit-breaker switching on-off coil current signal, three-phase asynchrony detection module is for detection of the three-phase asynchrony of primary cut-out.
2. proving installation as claimed in claim 1, is characterized in that: dynamic resistance detection module consists of power source charges control circuit and dynamic resistance testing circuit.
3. proving installation as claimed in claim 2, is characterized in that, power source charges control circuit includes ultracapacitor, solid-state relay, ultracapacitor charging set and voltage sensor; Dynamic resistance testing circuit includes relay, voltage sensor, thyristor, shunt, measuring resistance and isolating switch to be measured.
4. proving installation as claimed in claim 3, is characterized in that, measuring resistance is for the detection of switching-on resistance, and shunt is for the detection of loop resistance.
5. proving installation as claimed in claim 4, is characterized in that, the measurement electric current of loop resistance is that peak value is up to the dash current of 1000A.
6. proving installation as claimed in claim 4, is characterized in that, preferred measuring resistance is the large resistance of 500 Ω, and shunt adopts the shunt of micro-ohm level.
7. proving installation as claimed in claim 1, it is characterized in that: utilizing three-phase asynchrony detection module to carry out in the detection of three-phase asynchrony, at each phase fracture two ends of isolating switch, add Switching Power Supply, and each is connected with a current-limiting resistance, by voltage sensor senses fracture voltage, by each, phase fracture voltage value transformation period is poor can obtain three-phase asynchrony.
8. the method for testing that the proving installation described in any one is carried out in claim 1-7, is characterized in that detecting the mechanical property of primary cut-out, three-phase asynchrony and dynamic resistance characteristic.
9. a method of testing as claimed in claim 8, is characterized in that: described mechanical property detects and comprises the following steps:
A), displacement transducer is placed in to moving contact in high voltage breaker place, first and second Hall current sensor is placed in respectively the divide-shut brake coil place of primary cut-out;
B), to close-minute operation of primary cut-out;
C), displacement transducer and first and second Hall current sensor import the displacement signal measuring separately and current signal into industrial control computer and carry out data calculating, and carry out result demonstration at industrial LCD.
10. a method of testing as claimed in claim 8, is characterized in that: described dynamic resistance Characteristics Detection comprises the following steps:
A), the power source charges control circuit in dynamic resistance detection module carries out ultracapacitor charging operations;
B), in dynamic resistance detects, when closing of power circuit breaker, first access switching-on resistance, then access loop resistance, switching-on resistance and loop resistance all adopt voltage-ratio method to detect;
C), by detecting the isolating switch both end voltage time from large to small, just can obtain switching-on resistance making time.
CN201310412010.1A 2013-09-11 2013-09-11 The method of testing that a kind of multifunctional high pressure breaker electrical characteristic test device is performed CN103698695B (en)

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CN103926466A (en) * 2014-04-18 2014-07-16 武汉大学 Electrical equipment loop resistor test system and contact state evaluation method
CN104062580A (en) * 2014-07-03 2014-09-24 国网山西省电力公司晋城供电公司 Portable breaker three-phase open phase actuation time calibrator
CN104236895A (en) * 2014-10-17 2014-12-24 国家电网公司 Mechanical characteristic detection circuit of high-voltage circuit breaker
CN105676120A (en) * 2016-01-11 2016-06-15 广东电网有限责任公司电力科学研究院 High voltage circuit breaker synchronism testing device and method based on abrupt change of vibration energy
CN106019139A (en) * 2016-07-28 2016-10-12 山东泰开高压开关有限公司 Arc-extinguishing chamber arc contact ablation degree measurement device and measurement method
CN106885955A (en) * 2015-12-02 2017-06-23 富士通天株式会社 State determining apparatus and condition judgement method
CN107884711A (en) * 2017-12-18 2018-04-06 国家电网公司 Breaker method of testing and terminal
CN107884707A (en) * 2017-09-30 2018-04-06 杨启蓓 High-voltage circuit-breaker switching on-off time on-Line Monitor Device and method
CN108594107A (en) * 2018-01-04 2018-09-28 国网天津市电力公司电力科学研究院 Comprehensive tester for breaker loop resistor experiment and mechanical characteristic test
CN109141512A (en) * 2018-10-27 2019-01-04 徐州巨业机械制造有限公司 A kind of test macro of mechanical equipment
CN109839539A (en) * 2017-11-27 2019-06-04 云南电网有限责任公司瑞丽供电局 A kind of dynamic resistance of high-voltage circuit breaker measurement method
CN109975695A (en) * 2017-12-19 2019-07-05 大众汽车有限公司 The method of electric system and the Functional Capability of the power relay in diagnosis electric system

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103926466B (en) * 2014-04-18 2016-08-24 武汉大学 A kind of electrical equipment loop resistance test system and contact condition appraisal procedure
CN103926466A (en) * 2014-04-18 2014-07-16 武汉大学 Electrical equipment loop resistor test system and contact state evaluation method
CN104062580A (en) * 2014-07-03 2014-09-24 国网山西省电力公司晋城供电公司 Portable breaker three-phase open phase actuation time calibrator
CN104062580B (en) * 2014-07-03 2016-08-17 国网山西省电力公司晋城供电公司 A kind of portable beaker three-phase non-three phase tester movement time
CN104236895A (en) * 2014-10-17 2014-12-24 国家电网公司 Mechanical characteristic detection circuit of high-voltage circuit breaker
CN106885955A (en) * 2015-12-02 2017-06-23 富士通天株式会社 State determining apparatus and condition judgement method
CN105676120A (en) * 2016-01-11 2016-06-15 广东电网有限责任公司电力科学研究院 High voltage circuit breaker synchronism testing device and method based on abrupt change of vibration energy
CN106019139A (en) * 2016-07-28 2016-10-12 山东泰开高压开关有限公司 Arc-extinguishing chamber arc contact ablation degree measurement device and measurement method
CN107884707A (en) * 2017-09-30 2018-04-06 杨启蓓 High-voltage circuit-breaker switching on-off time on-Line Monitor Device and method
CN107884707B (en) * 2017-09-30 2018-12-21 杨启蓓 High-voltage circuit-breaker switching on-off time on-Line Monitor Device and method
CN109839539A (en) * 2017-11-27 2019-06-04 云南电网有限责任公司瑞丽供电局 A kind of dynamic resistance of high-voltage circuit breaker measurement method
CN107884711A (en) * 2017-12-18 2018-04-06 国家电网公司 Breaker method of testing and terminal
CN109975695A (en) * 2017-12-19 2019-07-05 大众汽车有限公司 The method of electric system and the Functional Capability of the power relay in diagnosis electric system
CN108594107A (en) * 2018-01-04 2018-09-28 国网天津市电力公司电力科学研究院 Comprehensive tester for breaker loop resistor experiment and mechanical characteristic test
CN109141512A (en) * 2018-10-27 2019-01-04 徐州巨业机械制造有限公司 A kind of test macro of mechanical equipment

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