CN103698695B - The method of testing that a kind of multifunctional high pressure breaker electrical characteristic test device is performed - Google Patents
The method of testing that a kind of multifunctional high pressure breaker electrical characteristic test device is performed Download PDFInfo
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Abstract
The method of testing that a kind of multifunctional high pressure breaker electrical characteristic test device is performed, is made up of dynamic electric resistor detection module, asynchrony detection module, displacement transducer, Hall current sensor, data collecting card, industrial control computer and industrial LCD.The power supply of wherein measure loop resistance uses ultracapacitor, and detection electric current is the dash current that peak value is up to 1000A.The test device is a kind of Multifunctional tester for integrating detection primary cut-out loop resistance, switching-on resistance, switching-on resistance making time and breaker mechanic property；The work complexity of staff is greatly simplified, operating efficiency is improved.
Description
Technical field
The present invention relates to primary cut-out field, more particularly, to a kind of primary cut-out electrical characteristic test device and its
Method of testing.
Background technology
Primary cut-out is most important a kind of electrical equipment in High-Voltage Electrical Appliances.In the primary equipment of power system, just
For single device, breaker is the large scale electrical power unit for being only second to generator and transformer, but is accomplished by quantity and shared electricity
For the investment of station equipment, it comes before both again.Therefore the reliability of breaker performance is related to power system
Safe operation.
It is special that primary cut-out electrical characteristic includes loop resistance, switching-on resistance, switching-on resistance making time, breaker mechanical
Property etc..But, current detecting instrument is all designed just for some aspect of breaker, comprehensive when being carried out to breaker
Then need to change a variety of instruments during detection, cause the waste of many manpower and materials.Thus it is necessary to design a kind of function complete
Whole detecting instrument, to improve labor productivity.
In addition, during measuring loop resistance, the power supply generally used is dc source, but dc source is because caloric value
Limitation, general interior energy output current value is smaller, and loop resistance resistance very little itself, can thus cause measured obtain
Electric signal is very small, it is difficult to meet live precise acquisition, and low current can not remove the oxide-film on contact, and measured value is made on the contrary
It is bigger than normal.It is effective measure thus to carry out live loop resistance measurement using heavy impulse current.
The content of the invention
The present invention proposes accurate, the multiple functional multifunctional high pressure breaker electrical characteristic test device of a set of measurement.Should
It is electrically special that device can measure making time, loop resistance and mechanical property of primary cut-out switching-on resistance and switching-on resistance etc.
Property.
The multifunctional high pressure breaker electrical characteristic test device of the present invention includes dynamic electric resistor detection module, asynchrony
This is several for detection module, displacement transducer, Hall current sensor, data collecting card, industrial control computer and industrial LCD
Part.Data acquisition wherein is carried out using data collecting card, data calculating processing is carried out using industrial control computer, utilizes work
Industry display screen carries out man-machine interaction.
Further, dynamic electric resistor detection module controls circuit and dynamic electric resistor to detect circuit structure by power source charges for invention
Into.Wherein, power source charges control circuit includes ultracapacitor, solid-state relay, ultracapacitor charger and voltage and passed
Sensor；Dynamic electric resistor detection circuit includes relay, voltage sensor, IGCT, current divider, measuring resistance and to be measured disconnected
Road device.
Further, measuring resistance is used for the detection of switching-on resistance, and current divider is used for the detection of loop resistance；Loop electricity
Resistance measurement electric current is the dash current that peak value is up to 1000A；Measuring resistance is the big resistance of 500 Ω, and current divider is using micro-ohm level
Current divider further, in dynamic electric resistor detection, switching-on resistance is accessed when closing of power circuit breaker first, then accesses loop electricity
Resistance, switching-on resistance uses voltage-ratio method to be detected with loop resistance, i.e. testing resistance RXWith resistance R known to one1Standard electric
Resistance series connection, both voltages of measurement, according toObtain RXDifference in switching-on resistance and loop resistance are detected is to survey
Measuring resistance used is the big resistance of 500 Ω during switching-on resistance, and the current divider of micro-ohm level is used when surveying loop resistance.
When voltage on capacitor reaches 20V, loop resistance detection current peak reaches 1000A, and current waveform is impact
Waveform；By detecting the time of breaker both end voltage from large to small, it is possible to obtain switching-on resistance making time.
Voltage signal is filtered to be amplified into data collecting card with voltage sensor and handled.
Further, using resistance-type linear displacement transducer, primary cut-out stroke characteristic is detected；Using Hall current
Sensor detects divide-shut brake coil current characteristic；
Further, in the detection of three-phase asynchrony, Switching Power Supply is added at each phase fracture two ends of breaker, and respectively with one
Individual current-limiting resistance series connection, by voltage sensor senses fracture voltage, detects that each phase fracture voltage value changes time difference can obtain
Three-phase asynchrony.
The beneficial effects of the invention are as follows：
(1) stroke characteristic, the divisions such as detection primary cut-out closing time, closing speed are realized in invention in one apparatus
Brake current characteristic, divide-shut brake three-phase asynchrony, loop resistance, switching-on resistance and switching-on resistance making time is contour breaks road
Device electrical characteristic is detected, is greatly simplified the work complexity of staff, is improved operating efficiency；
(2) make the accuracy of detection of loop resistance higher using high current, knot is detected compared with other low current detecting instruments
Fruit is more convincing；And loop resistance detection electric current uses dash current, and the hair of checking of great current is solved well
Heat problem, improves the service efficiency of instrument；
(3) it is applied to 500kV moving contact in high voltage breaker placement property, divide-shut brake current characteristics, three-phase asynchrony, conjunction
The measurement of lock resistance, loop resistance and switching-on resistance making time.
Brief description of the drawings
Fig. 1 is invention multifunctional high pressure breaker electrical characteristic test device structure chart；
Fig. 2 is invention dynamic electric resistor measure loop；
Fig. 3 is invention three-phase asynchrony detection circuit；
Wherein：
1- ultracapacitors,
2- solid-state relays,
3- ultracapacitor chargers,
4th, 8,9,10,13,14- relays,
5- measuring resistances,
6- current dividers,
7- IGCTs,
11st, 12,15,16,17,21,22,23- voltage sensors,
18th, 19,20- primary cut-out A, B, C three-phases,
24th, 25,26- current-limiting resistances.
Embodiment
Further illustrate with reference to the accompanying drawings and examples.
First, multifunctional high pressure breaker electrical characteristic test device structure
The multifunctional high pressure breaker electrical characteristic test device structure of the present invention, as shown in Figure 1.Including dynamic electric resistor inspection
Module, displacement transducer, Hall current sensor 1, Hall current sensor 2, three-phase asynchrony detection module, data are surveyed to adopt
Truck, industrial control computer and several parts of industrial LCD.Displacement transducer is from NOVOtechnik TLH-600 straight lines position
Displacement sensor, electric signal is converted to by moving contact in high voltage breaker displacement signal, passes through the incoming Industry Control meter of data collecting card
In calculation machine；Hall current sensor 1 and Hall current sensor 2 select V121S07 Hall current sensors, for gathering high pressure
Circuit-breaker switching on-off coil current signal；Dynamic electric resistor detection module can detect primary cut-out switching-on resistance using voltage-ratio method
And loop resistance, it can measure switching-on resistance making time using the measurement variation on sensor 11 before and after loop resistance input；
Three-phase asynchrony detection module can detect the three-phase asynchrony of breaker；Data collecting card (PCI-1716L) is used to gather
Calculated in each road electricity and non-electric charge quantity signalling, incoming industrial control computer (AIMB-766), industrial LCD (FPM-
3060G) it is used for man-machine interaction.
2nd, this apparatus measures method
(1) mechanical property detection comprises the following steps：
A) displacement transducer is placed at moving contact in high voltage breaker, Hall current sensor 1 and Hall current sensor 2
It is respectively placed at divide-shut brake coil；
B) breaker is carried out to close-point operation；
C) displacement transducer and current sensor measure displacement signal and current signal respectively, by the incoming Industry Control of signal
Computer carries out data calculating, and shows result in industrial LCD.
(2) referring to Fig. 3, the detection of three-phase asynchrony comprises the following steps：
A) correspondence of voltage sensor 21,22,23 is positioned over to the fracture two ends of three-phase 18,19,20；
B) breaker is carried out closing-point operation；
C) illustrate that fracture is closed when voltage sensor data are changed into 0 from 5V on each phase fracture, industrial control computer meter
Calculate, three-phase branch wire time difference is the asynchrony of three-phase.
(3) referring to Fig. 2, dynamic electric resistor detection comprises the following steps：
A), user is clicked on after charge button on industrial LCD, on industrial control computer control relay output board
Relay conducting, then solid-state relay connect triggering power supply after turn on, charger to ultracapacitor charge, voltage sensor
The charging voltage on ultracapacitor is gathered, when the reading on voltage sensor reaches preset value, on relay output board
Relay disconnects, and then solid-state relay disconnects, and charger stops charging to ultracapacitor；
B), user chooses whether to measure switching-on resistance at the setting interface of industrial LCD first, then presses measurement button；
Such as the relay reception cut-off signal that selection is, switching-on resistance is put on major loop, relay output board first, IGCT breaks
Open, in measuring resistance access main circuit, the first relay (9), the second relay (13) on relay output board receive closure
The 3rd relay (10) on signal, relay output board, the 4th relay (14) disconnect, first voltage sensor (11), the
In two voltage sensors (15) input measuring circuit, the voltage letter in now first voltage sensor (11) collection measuring resistance
Number, the voltage on second voltage sensor (15) collection primary cut-out；Industrial computer conducts electricity first, second the electricity on pressure sensor
Pressure signal can obtain switching-on resistance value using voltage-ratio method；
C) in, about 8ms or so, loop resistance input major loop；Now switching-on resistance is short-circuited, first voltage sensor
(11) measurement income value drastically decline, industrial control computer calculate first voltage sensor (11) signal drastically decline when
Between be switching-on resistance making time；Industrial control computer sends closure to the 5th relay (8) on relay output board
In signal, IGCT (7) closure, current divider (6) input circuit, now due to current divider (6) resistance value very little, by measuring resistance
(5) short-circuit, industrial control computer sends cut-off signal to first, second relay (9,13) on relay output board, to
The three, the 4th relays (10,14) on relay output board send closure signal, now the 4th voltage sensor (12),
Three voltage sensors (16) input detection circuit, industrial control computer is based on the 4th voltage sensor (12), tertiary voltage and passed
Measured value on sensor (16), loop resistance value can be obtained using voltage-ratio method.
Many details are elaborated in the above description to fully understand the present invention.But above description is only
Presently preferred embodiments of the present invention, the invention can be embodied in many other ways as described herein, therefore this
Invention is not limited by specific implementation disclosed above.Any those skilled in the art are not departing from the technology of the present invention simultaneously
In the case of aspects, all make many possible to technical solution of the present invention using the methods and techniques content of the disclosure above
Change and modify, or be revised as the equivalent embodiment of equivalent variations.Every content without departing from technical solution of the present invention, according to this
The technical spirit of invention still falls within skill of the present invention to any simple modifications, equivalents, and modifications made for any of the above embodiments
In the range of the protection of art scheme.
Claims (1)
1. a kind of method of testing that multifunctional high pressure breaker electrical characteristic test device is performed, the device includes displacement sensing
Device, the first Hall current sensor, the second Hall current sensor, dynamic electric resistor detection module, three-phase asynchrony detection mould
Block, data collecting card, industrial control computer；Wherein, displacement transducer, the first Hall current sensor, the second Hall current
Sensor, dynamic electric resistor detection module and three-phase asynchrony detection module will detect that obtained primary cut-out electrical characteristic is believed
Number by the incoming industrial control computer of data collecting card, described electrical characteristic is special for moving contact in high voltage breaker displacement
Property, divide-shut brake current characteristics, three-phase asynchrony, switching-on resistance, switching-on resistance making time and loop resistance, displacement transducer
Moving contact in high voltage breaker displacement signal is converted into electric signal, by the incoming industrial control computer of data collecting card,
First, two Hall current sensors are used to gather high-voltage circuit-breaker switching on-off coil current signal, three-phase asynchrony detection module
Three-phase asynchrony for detecting primary cut-out；The dynamic electric resistor detection module controls circuit and dynamic by power source charges
Resistance detecting circuit is constituted；Power source charges control circuit includes the 6th relay (4), ultracapacitor (1), solid-state relay
(2), ultracapacitor charger (3) and the 5th voltage sensor (17), dynamic electric resistor detection circuit includes first, second,
Three, the four, the 5th relays (9,13,10,14,8), first, second, third, fourth voltage sensor (11,15,12,
16), IGCT (7), current divider (6), measuring resistance (5) and primary cut-out, wherein, ultracapacitor (1), measuring resistance
(5), primary cut-out is sequentially connected in series into loop, and IGCT (7) and the series circuit of current divider (6) are in parallel with measuring resistance (5),
First voltage sensor (11) and the series circuit of the first relay (9) are in parallel with measuring resistance (5), tertiary voltage sensor
(12) series circuit with the 3rd relay (10) is in parallel with measuring resistance (5), second voltage sensor (15) and the second relay
The series circuit of device (13) is in parallel with primary cut-out, the series circuit of the 4th voltage sensor (16) and the 4th relay (14)
It is in parallel with primary cut-out；Measuring resistance (5) is used for the detection of switching-on resistance, and current divider (6) is used for the detection of loop resistance；
The measurement electric current of loop resistance is the dash current that peak value is up to 1000A；Measuring resistance is the big resistance of 500Q, and current divider is using micro-
The current divider of Europe level；It is each in primary cut-out in three-phase asynchrony detection is carried out using three-phase asynchrony detection module
Phase fracture two ends add Switching Power Supply, and are respectively connected with a current-limiting resistance, by voltage sensor senses fracture voltage, by each phase
The fracture voltage value changes time difference is that can obtain three-phase asynchrony；
The method of testing includes：Mechanical property, three-phase asynchrony and dynamic electric resistor characteristic to primary cut-out are examined
Survey；
Described mechanical property detection comprises the following steps：
A), displacement transducer is placed at moving contact in high voltage breaker, first and second Hall current sensor is respectively placed in height and broken
At the divide-shut brake coil of road device；
B), primary cut-out is carried out to close-point operation；
C) displacement signal and current signal that, displacement transducer and first and second Hall current sensor obtain each measurement are passed
Enter industrial control computer and carry out data calculating, and result is carried out in industrial LCD to show；
Described dynamic electric resistor Characteristics Detection comprises the following steps：
A), user is clicked on after charge button on industrial LCD, and on industrial control computer control relay output board
Six relays (4) are turned on, then solid-state relay (2) is turned on after connecting triggering power supply, and charger (3) fills to ultracapacitor (1)
Charging voltage on electricity, the 5th voltage sensor (17) collection ultracapacitor (1), the reading on the 5th voltage sensor (17)
When number reaches preset value, the 6th relay (4) on relay output board disconnects, and then solid-state relay (2) disconnects, charger
(3) stop charging to ultracapacitor (1)；
B), user chooses whether to measure switching-on resistance at the setting interface of industrial LCD first, then presses measurement button；As selected
Selecting is, the 5th relay (8) that switching-on resistance is put on major loop, relay output board first receives cut-off signal, IGCT
(7) disconnect, in measuring resistance (5) access main circuit, the first relay (9), the second relay (13) on relay output board
Receive the 3rd relay (10) on closure signal, relay output board, the 4th relay (14) to disconnect, first voltage sensor
(11), in second voltage sensor (15) input measuring circuit, now in first voltage sensor (11) collection measuring resistance (5)
Voltage signal, second voltage sensor (15) collection primary cut-out on voltage；Industrial control computer is by first, second
Voltage signal on voltage sensor (11,15) can obtain switching-on resistance value using voltage-ratio method；
C), after 8ms, in loop resistance input major loop；Now switching-on resistance is short-circuited, first voltage sensor (11) measurement
Income value drastically declines, and the time that the signal that industrial control computer calculates first voltage sensor (11) drastically declines is to close
Lock resistance making time；Industrial control computer sends closure signal, brilliant lock to the 5th relay (8) on relay output board
Manage in (7) closure, current divider (6) input circuit, now due to current divider (6) resistance value very little, by measuring resistance (5) short circuit,
Industrial control computer sends cut-off signal to first, second relay (9,13) on relay output board, defeated to relay
The three, the 4th relays (10,14) on ejecting plate send closure signal, and now tertiary voltage sensor (12), the 4th voltage are passed
Sensor (16) input detection circuit, industrial control computer is based on tertiary voltage sensor (12), the 4th voltage sensor (16)
On measured value, can obtain loop resistance value using voltage-ratio method.
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