CN104535923B - A kind of test loop detected for dc circuit breaker break performance and test method - Google Patents
A kind of test loop detected for dc circuit breaker break performance and test method Download PDFInfo
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- CN104535923B CN104535923B CN201410835862.6A CN201410835862A CN104535923B CN 104535923 B CN104535923 B CN 104535923B CN 201410835862 A CN201410835862 A CN 201410835862A CN 104535923 B CN104535923 B CN 104535923B
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Abstract
The present invention discloses a kind of test loop detected for dc circuit breaker break performance and test method, and the test loop is effectively replaced by the huge test loop of the investment realized dc circuit breaker experiment and built by the way of equivalence is substituted.The loop is by the electric capacity of low-frequency oscillation loop (or high frequency oscillation circuit) through high voltage ignition ball, auxiliary switch AB1, reactor LSDc circuit breaker high-pressure side, auxiliary switch AB2 and current-limiting reactor series arm and dc circuit breaker branch circuit parallel connection are output to, the branch road is dc circuit breaker protective loop, prevents dc circuit breaker from opening continuous electric current, causes the excessive scaling loss of dc circuit breaker or damage.Arrester and ball gap are protection equipment, prevent overvoltage destructive test equipment.Charging device CD1 is capacitor bank CSCharging, charging device CD2 is capacitor C0Charging.And adjusted by rational sequential, make triggering device act in the stipulated time to complete the testing inspection of dc circuit breaker.
Description
【Technical field】
The invention belongs to direct current transportation high voltage DC breaker experimental technique field, more particularly to a kind of dc circuit breaker
The test loop of break performance detection and test method.
【Background technology】
Dc circuit breaker is one of visual plant of extra-high voltage direct-current transmission engineering current conversion station, and its main function is to remove directly
The short trouble that side occurs is flowed, i.e., when straight-flow system breaks down, is opened in the short period of time (in 5ms) with dc circuit breaker
Disconnected direct-current short circuit electric current.In order to prove that dc circuit breaker has the ability, verify that it cut-offs direct current in laboratory test short
The performance of road electric current.
The test loop of dc circuit breaker break performance detection is analog DC breaker actual condition in straight-flow system,
Due to bear high voltage after dc circuit breaker drop-out current, the voltage of dc source must reach the magnitude of voltage of requirement, at present
High voltage DC breaker is main, and the electric capacity that is, in the subsidiary loop of dc circuit breaker needs to be charged based on active type, because
This will build up such test loop, invest huge.
【The content of the invention】
It is an object of the invention to provide a kind of test loop and experiment side detected for dc circuit breaker break performance
Method, the test loop is effectively replaced by the investment realized dc circuit breaker experiment and built huge by the way of equivalence is substituted
Test loop.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of test loop detected for dc circuit breaker break performance, including current source and be connected with current source
Hookup part；Current source includes capacitor bank CS, high voltage reactor L1, the first high voltage ignition ball GP1 and the second high pressure spot
Fireball GP2；Hookup part includes the first auxiliary switch AB1, the second auxiliary switch AB2 and current-limiting reactor Lc；First is high
Pressure point fireball GP1 one end and capacitor bank CSHigh-voltage output end is connected, and the other end is connected with first auxiliary switch AB1 one end；The
The one auxiliary switch AB1 other ends are connected with high voltage reactor L1 one end；The high voltage reactor L1 other ends and dc circuit breaker SP are high
Pressure side is connected, dc circuit breaker SP low-pressure end ground connection；Second auxiliary switch AB2 one end and current-limiting reactor LcOne end is connected；
The second auxiliary switch AB2 other ends are connected with the first auxiliary switch AB1 other ends, current-limiting reactor LcThe other end is grounded；Direct current
Breaker SP two ends are parallel with subsidiary loop, and subsidiary loop includes the capacitor C0 and reactor L0 being serially connected；Second high pressure
Ignition pill GP2 one end connection dc circuit breaker SP high-pressure side, other end connection capacitor C0 positive pole, capacitor C0 negative pole
Pass through reactor L0 connection dc circuit breakers SP low-pressure end.
Further improve of the invention is：Also include protection ball BQ and arrester P；Protect ball BQ one end high by first
Pressure point fireball GP1 is connected on capacitor bank CSHigh potential on, protection ball BQ another termination capacitor bank CSLow potential；It is lightning-arrest
Device P high-pressure sides are connected with first auxiliary switch AB1 one end, another termination capacitor bank CSLow potential.
Further improve of the invention is：Also include measuring system；The measuring system includes：First magnetic potentiometer CT1,
Second magnetic potentiometer CT2, the 3rd magnetic potentiometer CT3, the 4th magnetic potentiometer CT4, arc voltage measurement apparatus and RC divider；Arc voltage measurement dress
Put and be connected in parallel on dc circuit breaker SP two ends；RC divider high-pressure side is connected with dc circuit breaker SP high-pressure sides, the other end and ground
It is connected；First magnetic potentiometer CT1 is enclosed on dc circuit breaker SP low-pressure ends and is connected with dc circuit breaker SP subsidiary loop low-pressure ends busbar
On；Second magnetic potentiometer CT2 is enclosed on current-limiting reactor LcBetween ground on busbar；3rd magnetic potentiometer CT3 is enclosed on dc circuit breaker SP
On busbar between low-pressure end and dc circuit breaker SP subsidiary loop low-pressure end junctions and ground；4th magnetic potentiometer CT4 is enclosed on directly
Flow breaker SP low-pressure ends.
Further improve of the invention is：Capacitor bank CSLow-frequency oscillation loop or power frequency are constituted with high voltage reactor L1
Oscillation circuit.
Further improve of the invention is：The test loop also includes the first charging dress charged for capacitor bank CS
CD1 is put, is the second charging device CD2 of capacitor C0 chargings.
A kind of test method for the test loop detected for dc circuit breaker break performance, comprises the following steps：
Dc circuit breaker SP is in "on" position before experiment, and the first auxiliary switch AB1 is in "on" position, capacitor bank CS
With capacitor C0 charging completes；
In T0 moment the first high voltage ignition ball GP1 actions；
Start disjunction in T1 moment dc circuit breakers SP；
In T2 moment the second high voltage ignition ball GP2 actions；
Closed in T3 moment the second auxiliary switch AB2；
The first auxiliary switch AB1 sub-gate signals are sent out at the T4 moment, whole experiment is completed.
Further improve of the invention is：T0 ＜ T1 ＜ T2 ＜ T3 ＜ T4.
Further improve of the invention is：T1 is more than 1ms, less than 3ms；T2 is 3ms；T3 disconnects for dc circuit breaker SP
4ms afterwards；5ms after T4 dc circuit breakers SP disconnects.
Relative to prior art, the invention has the advantages that：The test method of dc circuit breaker, that is, use
The present invention proposes a kind of test loop detected for dc circuit breaker break performance and test method, the experiment
Loop includes LC low-frequency oscillations loop or oscillation frequency loop, and straightway testing is carried out to dc circuit breaker, examines direct current interruption
Arc-rupturing capacity under the ability of the interaction on the road of the same auxiliary of the electric arc of device, higher di/dt and du/dt；After drop-out current,
Fracture recovers the ability to bear of voltage, meets voltage needed for experiment, and test loop equivalence is high.
Test loop of the present invention is effectively replaced by what is realized dc circuit breaker experiment and build by the way of equivalence is substituted
The huge test loop of investment；The loop is by the electric capacity of low-frequency oscillation loop (or high frequency oscillation circuit) through high voltage ignition ball, auxiliary
Help switch AB1, reactor LSDc circuit breaker high-pressure side is output to, auxiliary switch AB2 is with current-limiting reactor series arm and directly
Breaker branch circuit parallel connection is flowed, the branch road is dc circuit breaker protective loop, prevents dc circuit breaker from opening continuous electric current, causes direct current
The excessive scaling loss of breaker or damage.Arrester and ball gap are protection equipment, prevent overvoltage destructive test equipment.Charging device
CD1 is capacitor bank CSCharging, charging device CD2 is capacitor C0Charging.And adjusted by rational sequential, make triggering device
Act to complete the testing inspection of dc circuit breaker in the stipulated time.
【Brief description of the drawings】
Fig. 1 is a kind of test loop schematic diagram detected for dc circuit breaker break performance of the present invention；
Fig. 2 is a kind of test loop action timing diagram detected for dc circuit breaker break performance of the present invention；
Wherein：CS- current source capacitor bank, L1- reactors, C0- commutation circuit electric capacity, L0- commutation circuit inductance, GP1-
First high voltage ignition ball, the high voltage ignition balls of GP2- second；The auxiliary switches of AB1- first, the auxiliary switches of AB2- second；SP- direct currents break
Road device；I1- current source currents；I2- current-limiting reactor electric currents；I3- dc circuit breaker subsidiary loop electric currents；I4- dc circuit breakers
(sp) test current；P- arresters；BQ- protects ball；Lc- current-limiting reactor；U1- arc voltage measurement apparatus；U2- RC dividers；
The magnetic potentiometers of CT1- first, the magnetic potentiometers of CT2- second, the magnetic potentiometers of CT3- the 3rd, the magnetic potentiometers of CT4- the 4th, the charging devices of CD1- first,
The charging devices of CD2- second.
【Embodiment】
Refer to shown in Fig. 1, a kind of test loop detected for dc circuit breaker break performance of the present invention, including electric current
Source and the hookup part being connected with current source；Current source is by capacitor bank CS, high voltage reactor L1, the first high-tension ignition
Ball GP1, the second high voltage ignition ball GP2 and protection ball BQ compositions；Hookup part includes the first auxiliary switch AB1, second auxiliary
Help switch AB2, current-limiting reactor Lc, arrester P and measuring system.
Measuring system includes：First magnetic potentiometer CT1, the second magnetic potentiometer CT2, the 3rd magnetic potentiometer CT3, the 4th magnetic potentiometer CT4,
Arc voltage measurement apparatus and RC divider.
The capacitor bank C of first high voltage ignition ball GP1 one end and low-frequency oscillation loop (or oscillation frequency loop)SHigh pressure is defeated
Go out end to be connected, the other end is connected with first auxiliary switch AB1 one end；The first auxiliary switch AB1 other ends and high voltage reactor L1
One end is connected；The high voltage reactor L1 other ends are connected with dc circuit breaker SP high-pressure sides, dc circuit breaker SP low-pressure end ground connection.
Protection ball BQ one end is connected on the high potential of low-frequency oscillation loop output by the first high voltage ignition ball GP1, protection ball BQ's
The low potential of another termination low-frequency oscillation loop output；Arrester P high-pressure sides are connected with first auxiliary switch AB1 one end, separately
One termination tank capacitor group CSThe low potential of output end；Second auxiliary switch AB2 one end and current-limiting reactor LcOne end connects
Connect；The second auxiliary switch AB2 other ends are connected with the first auxiliary switch AB1 other ends, current-limiting reactor LcThe other end is grounded.
Arc voltage measurement apparatus is connected in parallel on dc circuit breaker SP two ends；RC divider high-pressure side and dc circuit breaker SP high pressures
End is connected, and the other end is connected to the ground.Dc circuit breaker SP two ends are parallel with subsidiary loop, and subsidiary loop includes the electricity being serially connected
Container C0 and reactor L0；Second high voltage ignition ball GP2 one end connection dc circuit breaker SP high-pressure side, other end connection electric capacity
Device C0 positive pole, the low-pressure end that capacitor C0 negative pole passes through reactor L0 connection dc circuit breakers SP.
First magnetic potentiometer CT1 is enclosed on dc circuit breaker SP low-pressure ends and is connected with dc circuit breaker SP subsidiary loop low-pressure ends mother
On row；Second magnetic potentiometer CT2 is enclosed on current-limiting reactor LcBetween ground on busbar；3rd magnetic potentiometer CT3 is enclosed on dc circuit breaker
On busbar between SP low-pressure ends and dc circuit breaker SP subsidiary loop low-pressure end junctions and ground；4th magnetic potentiometer CT4 is enclosed on
Dc circuit breaker SP low-pressure ends.
A kind of test loop detected for dc circuit breaker break performance of the present invention, low-frequency oscillation loop (or high frequency vibrating
Swing loop) capacitor bank CS be output to direct current through the first high voltage ignition ball GP1, the first auxiliary switch AB1, high voltage reactor L1
Breaker SP high-pressure sides, the second auxiliary switch AB2 and current-limiting reactor LcSeries arm and dc circuit breaker branch circuit parallel connection, the branch
Road is dc circuit breaker protective loop, prevents dc circuit breaker from opening continuous electric current, causes the excessive scaling loss of dc circuit breaker or damage.
Arrester P and ball gap are protection equipment, prevent overvoltage destructive test equipment.First charging device CD1 is that capacitor bank CS fills
Electricity, the second charging device CD2 charges for capacitor C0.
Refer to shown in Fig. 2, a kind of experiment side for the test loop detected for dc circuit breaker break performance of the present invention
Method, comprises the following steps：
Dc circuit breaker SP is in "on" position before experiment, and the first auxiliary switch AB1 is in "on" position, capacitor bank CS
With capacitor C0 charging completes；
In T0 moment the first high voltage ignition ball GP1 actions；
Start disjunction in T1 moment dc circuit breakers SP；T1 is more than 1ms, less than 3ms
In T2 moment the second high voltage ignition ball GP2 actions；T2 is 3ms；
Closed in T3 moment the second auxiliary switch AB2；T3 is 4ms after dc circuit breaker SP disconnects；
The first auxiliary switch AB1 sub-gate signals are sent out at the T4 moment；5ms after T4 dc circuit breakers SP disconnects.
The present invention is adjusted by rational sequential, makes triggering device and respective switch act to complete direct current in the stipulated time
The testing inspection of breaker.
Claims (1)
1. a kind of test method for the test loop detected for dc circuit breaker break performance, it is characterised in that described to be used for
The test loop of dc circuit breaker break performance detection, including current source and the hookup part that is connected with current source；
Current source includes capacitor bank CS, high voltage reactor L1, the first high voltage ignition ball GP1 and the second high voltage ignition ball GP2；Examination
Testing circuit part includes the first auxiliary switch AB1, the second auxiliary switch AB2 and current-limiting reactor Lc；
First high voltage ignition ball GP1 one end and capacitor bank CSHigh-voltage output end is connected, the other end and the first auxiliary switch AB1 mono-
End is connected；The first auxiliary switch AB1 other ends are connected with high voltage reactor L1 one end；The high voltage reactor L1 other ends break with direct current
Road device SP high-pressure sides are connected, dc circuit breaker SP low-pressure end ground connection；Second auxiliary switch AB2 one end and current-limiting reactor LcOne
End connection；The second auxiliary switch AB2 other ends are connected with the first auxiliary switch AB1 other ends, current-limiting reactor LcAnother termination
Ground；
Dc circuit breaker SP two ends are parallel with subsidiary loop, and subsidiary loop includes the capacitor C0 and reactor L0 being serially connected；
Second high voltage ignition ball GP2 one end connection dc circuit breaker SP high-pressure side, other end connection capacitor C0 positive pole, capacitor
The low-pressure end that C0 negative pole passes through reactor L0 connection dc circuit breakers SP；
Test loop also includes protection ball BQ and arrester P；Protection ball BQ one end is connected on electric capacity by the first high voltage ignition ball GP1
Device group CSHigh potential on, protection ball BQ another termination capacitor bank CSLow potential；Arrester P high-pressure sides and the first auxiliary
Switch AB1 one end to be connected, another termination capacitor bank CSLow potential；
Test loop also includes measuring system；The measuring system includes：First magnetic potentiometer CT1, the second magnetic potentiometer CT2, the 3rd
Magnetic potentiometer CT3, the 4th magnetic potentiometer CT4, arc voltage measurement apparatus and RC divider；Arc voltage measurement apparatus is connected in parallel on dc circuit breaker
SP two ends；RC divider high-pressure side is connected with dc circuit breaker SP high-pressure sides, and the other end is connected to the ground；First magnetic potentiometer CT1
Dc circuit breaker SP low-pressure ends are enclosed on dc circuit breaker SP subsidiary loop low-pressure ends to be connected on busbar；Second magnetic potentiometer CT2 covers
In current-limiting reactor LcBetween ground on busbar；3rd magnetic potentiometer CT3 is enclosed on dc circuit breaker SP low-pressure ends and dc circuit breaker
On busbar between SP subsidiary loop low-pressure end junctions and ground；4th magnetic potentiometer CT4 is enclosed on dc circuit breaker SP low-pressure ends；
Capacitor bank CSLow-frequency oscillation loop or oscillation frequency loop are constituted with high voltage reactor L1；
Test loop also includes the first charging device CD1 charged for capacitor bank CS, is the second charging of capacitor C0 chargings
Device CD2；
Test method comprises the following steps：
Dc circuit breaker SP is in "on" position before experiment, and the first auxiliary switch AB1 is in "on" position, capacitor bank CS and electricity
Container C0 charging completes；
In T0 moment the first high voltage ignition ball GP1 actions；
Start disjunction in T1 moment dc circuit breakers SP；
In T2 moment the second high voltage ignition ball GP2 actions；
Closed in T3 moment the second auxiliary switch AB2；
The first auxiliary switch AB1 sub-gate signals are sent out at the T4 moment, whole experiment is completed；
T1 is more than 1ms, less than 3ms；T2 is 3ms；T3 is 4ms after dc circuit breaker SP disconnects；T4 disconnects for dc circuit breaker SP
5ms afterwards.
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| CN201410835862.6A CN104535923B (en) | 2014-12-27 | 2014-12-27 | A kind of test loop detected for dc circuit breaker break performance and test method |
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| CN201410835862.6A CN104535923B (en) | 2014-12-27 | 2014-12-27 | A kind of test loop detected for dc circuit breaker break performance and test method |
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