CN207798936U - Shunt reactor switching overvoltage tests system - Google Patents
Shunt reactor switching overvoltage tests system Download PDFInfo
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- CN207798936U CN207798936U CN201820315847.2U CN201820315847U CN207798936U CN 207798936 U CN207798936 U CN 207798936U CN 201820315847 U CN201820315847 U CN 201820315847U CN 207798936 U CN207798936 U CN 207798936U
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Abstract
A kind of shunt reactor switching overvoltage provided by the utility model tests system, including：A phase lines, B phase lines, C phase lines, breaker controller, light-to-current inversion digital-to-analogue harvester and processor are both provided with reactor, electronic current mutual inductor, breaker and two piezoelectric ceramic type electronic voltage mutual induction devices on each phase line in A phase lines, B phase lines and C phase lines；The electric current of breaker fracture is flowed through when can acquire Circuit Breaker Switching by electronic current mutual inductor, circuit phase-to-ground voltage is acquired by piezoelectric ceramic type electronic voltage mutual induction device, and collected electric current, voltage signal can be transmitted to light-to-current inversion digital-to-analogue harvester, signal is reached into processor by light-to-current inversion digital-to-analogue harvester, reliable and accurate test data basis is provided for shunt reactor switching Over-voltage Analysis theory.
Description
Technical field
The utility model is related to technical field of electric power more particularly to a kind of shunt reactor switching overvoltage to test system.
Background technology
Shunt reactor is generally connected between the end of ultra high-tension transmission line and ground, plays the role of reactive-load compensation.It is in parallel
The important equipment that reactor is adjusted as reactive-load compensation and voltage, is widely used in the power system.In electric system
In the case that load fluctuation and voltage change are larger, shunt reactor frequent switching can be caused.SF is mostly used in the industry at present6Deng
Strong arc-extinguishing medium of the dielectric as breaker, when cut-offfing inductance current, because of SF6The strong of gas goes free characteristic, can make
Breaker fracture electric arc is obtained before not arriving electric current natural zero-crossing point to extinguish, to form the higher cut-off overvoltage of voltage magnitude,
Cause breaker fracture to generate the situations such as repeated breakdown, multiple breakdown and arc reignition to occur.The arc reignition of fracture will aggravate
The ablation of breaker arc extinguishing contact accelerates the formation of circuit breaker internal powder, and the powder formed can make breaker fracture
Insulating capacity degradation, and the situations aggravation such as repeated breakdown, multiple breakdown and arc reignition.
For this purpose, to the theory analysis of shunt reactor switching overvoltage, and the ablation degree of analysis breaker fracture, powder
Last formation, insulating capacity etc. are particularly important, however, there has been no can provide reliable and accurate number for the above work at present
According to the dedicated system of support.
Utility model content
The purpose of this utility model is to provide a kind of shunt reactor switching overvoltage to test system, to solve at present still
There is not the problem of can providing the dedicated system that reliable and accurate data are supported for the above work.
The utility model provides a kind of shunt reactor switching overvoltage test system, including：
A phase lines, B phase lines, C phase lines, breaker controller, light-to-current inversion digital-to-analogue harvester and processor；
One end of the A phase lines, the B phase lines and the C phase lines is connected, the A phase lines, the B
Be both provided on each phase line in phase line and the C phase lines reactor, electronic current mutual inductor, breaker with
And two piezoelectric ceramic type electronic voltage mutual induction devices；
The reactor is mutually concatenated with the breaker, and the electronic current mutual inductor is sheathed on the reactor and institute
Between stating breaker, one end of described two piezoelectric ceramic type electronic voltage mutual induction devices connects with the both ends of the breaker respectively
It connects, the other end ground connection of described two piezoelectric ceramic type electronic voltage mutual induction devices；
The electronic current on each phase line in the A phase lines, the B phase lines and the C phase lines is mutual
Sensor is connect with the light-to-current inversion digital-to-analogue harvester；
Two piezoelectric ceramics on each phase line in the A phase lines, the B phase lines and the C phase lines
The ground terminal of formula electronic voltage mutual induction device is connect with the light-to-current inversion digital-to-analogue harvester；
The breaker controller is connect with the light-to-current inversion digital-to-analogue harvester；
The light-to-current inversion digital-to-analogue harvester is connected to the processor.
Optionally, the electronic type on each phase line in the A phase lines, the B phase lines and the C phase lines
Current transformer is connect by telecommunication optical fiber with the light-to-current inversion digital-to-analogue harvester.
Optionally, two pressures on each phase line in the A phase lines, the B phase lines and the C phase lines
The ground terminal of electroceramics formula electronic voltage mutual induction device is connect by coaxial cable with the light-to-current inversion digital-to-analogue harvester.
Optionally, the light-to-current inversion digital-to-analogue harvester is connected to the processor by communicating twisted-pair feeder.
Optionally, the electronic current mutual inductor is located at close in described two piezoelectric ceramic type electronic voltage mutual induction devices
Between the piezoelectric ceramic type electronic voltage mutual induction device and the reactor of the reactor.
By above technical scheme it is found that shunt reactor switching overvoltage provided by the utility model tests system, including：
A phase lines, B phase lines, C phase lines, breaker controller, light-to-current inversion digital-to-analogue harvester and processor；A phase lines, B
One end of phase line and C phase lines is connected, and is all provided on each phase line in A phase lines, B phase lines and C phase lines
It is equipped with reactor, electronic current mutual inductor, breaker and two piezoelectric ceramic type electronic voltage mutual induction devices；Reactor with it is disconnected
Road device mutually concatenates, and electronic current mutual inductor is sheathed between reactor and breaker, and two piezoelectric ceramic type electronic voltages are mutual
One end of sensor is connect with the both ends of breaker respectively, the other end ground connection of two piezoelectric ceramic type electronic voltage mutual induction devices；A phases
The electronic current mutual inductor on each phase line in circuit, B phase lines and C phase lines is acquired with light-to-current inversion digital-to-analogue
Device connects；Two piezoelectric ceramic type electronic voltages on each phase line in A phase lines, B phase lines and C phase lines are mutual
The ground terminal of sensor is connect with light-to-current inversion digital-to-analogue harvester；Breaker controller connects with light-to-current inversion digital-to-analogue harvester
It connects；Light-to-current inversion digital-to-analogue harvester is connect with processor；It is flowed when can acquire Circuit Breaker Switching by electronic current mutual inductor
The electric current for crossing breaker fracture acquires circuit phase-to-ground voltage by piezoelectric ceramic type electronic voltage mutual induction device, and can will acquire
To electric current, voltage signal be transmitted to light-to-current inversion digital-to-analogue harvester, and by light-to-current inversion digital-to-analogue harvester by signal
Reach processor；In circuit normal operation, light-to-current inversion digital-to-analogue harvester is in off-line state, is receiving breaker control
The acquisition that light-to-current inversion digital-to-analogue harvester carries out data can be triggered when the Circuit Breaker Switching signal that device processed is sent, and carried out continuous
Overvoltage value and breaker fracture electric current when acquiring shunt reactor switching, carry for shunt reactor switching Over-voltage Analysis theory
For reliable and accurate test data basis.
Description of the drawings
It, below will be to attached drawing needed in the embodiment in order to illustrate more clearly of the technical solution of the utility model
It is briefly described, it should be apparent that, for those of ordinary skills, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram that shunt reactor switching overvoltage provided by the utility model tests system.
Fig. 2 is the single-phase test signal in scene that shunt reactor switching overvoltage provided by the utility model tests system
Figure.
It illustrates：11-A phase lines, 12-B phase lines, 13-C phase lines, 1- reactors, 2- electronic current mutual inductances
Device, 3- breakers, 4- piezoelectric ceramic type electronic voltage mutual induction devices, 5- telecommunication optical fibers, 6- breaker controllers, 7- light-to-current inversion numbers
Mould harvester, 8- coaxial cables, 9- communicate twisted-pair feeder, 10- processors.
Specific implementation mode
It please referring to Fig.1 to Fig. 2, the utility model embodiment provides a kind of shunt reactor switching overvoltage test system,
Including：A phase lines 11, B phase lines 12, C phase lines 13, breaker controller 6, light-to-current inversion digital-to-analogue harvester 7 and place
Manage device 10.
Wherein, one end of the A phase lines 11, the B phase lines 12 and the C phase lines 13 is connected, and states A phase lines
The other end on road 11, the B phase lines 12 and the C phase lines 13 is connected to busbar.The A phase lines 11, the B phases
Reactor 1, electronic current mutual inductor 2, open circuit are both provided on each phase line in circuit 12 and the C phase lines 13
Device 3 and two piezoelectric ceramic type electronic voltage mutual induction devices 4.
The reactor 1 is concatenated with 3 phase of the breaker, and the electronic current mutual inductor 2 is sheathed on the reactor 1
Between the breaker 3, the electronic current mutual inductor 2 specifically may be used the modes such as clamping and fix, and make the A
Phase line 11, the B phase lines 12 or the C phase lines 13 are passed through out of the electronic current mutual inductor 2, to utilize
State the electric current that breaker fracture is flowed through when electronic current mutual inductor 2 acquires 3 switching of breaker.
In the present embodiment, the breaker 3 is for monitoring power supply, protection power source network system, when bearing for network system
Just dropout order of operating a switch is sent out in the time that lotus sets at one when sustained overload, the mechanical actuating mechanism of breaker 3 is drawn immediately
Lock is cut off the power to protection power source network system.The principle of the breaker 3 is similar to fuse, a very short pulsed
Overload generally can not fuse wire, only when load sustained overload within a certain period of time, fuse can be just blown, and
Breaker and fuse can be set the difference is that its " intelligence " property, the threshold value of load do not immobilize,
The time of permissible load sustained overload is also that can set, and the intelligent function of breaker is realized by breaker controller 6
's.
In the present embodiment, each phase line in the A phase lines 11, the B phase lines 12 and the C phase lines 13
The electronic current mutual inductor 2 of road is connect by telecommunication optical fiber 5 with the light-to-current inversion digital-to-analogue harvester 7.The light
Electricity transformation digital-to-analogue harvester 7 can be achieved by the prior art, acquisition and conversion for carrying out data.
In the present embodiment, each phase line in the A phase lines 11, the B phase lines 12 and the C phase lines 13
The electronic current mutual inductor 2 of road is connect with the light-to-current inversion digital-to-analogue harvester 7, so as to by electronic current mutual inductance
The current data that device 2 acquires is transmitted to the light-to-current inversion digital-to-analogue harvester 7.
One end of described two piezoelectric ceramic type electronic voltage mutual induction devices 4 is connect with the both ends of the breaker 3 respectively, institute
State the other end ground connection of two piezoelectric ceramic type electronic voltage mutual induction devices 4.Specifically, the electronic current mutual inductor 2 is located at
Close to the piezoelectric ceramic type electronic voltage mutual induction device 4 of the reactor 1 in described two piezoelectric ceramic type electronic voltage mutual induction devices 4
It is mutual by being separately connected a piezoelectric ceramic type electronic voltage at the fracture both ends of the breaker 3 between the reactor 1
Sensor 4 utilizes the phase-to-ground voltage of 4 continuous acquisition circuit of piezoelectric ceramic type electronic voltage mutual induction device.
The volume of traditional voltage transformer is bigger, and for weight also than heavier, when installation is more difficult, once operation error,
It may also result in the danger of casualties.Piezoelectric ceramic type electronic voltage mutual induction device compensates for traditional electronic voltage mutual induction device
Deficiency has also pushed the development of computer technology.Since the frequency and voltage of shunt reactor switching overvoltage are all higher, generally
Voltage transformer when carrying out high voltage variable low pressure, be all use iron core, and iron core there are the saturation response time it is long the deficiencies of, and
And general voltage transformer direct-to-ground capacitance is larger, will increase phase-to-ground voltage installing the when of testing, reduce Overvoltage Amplitude
Deng leading to not authentic testing overvoltage value, the utility model can overcome above using piezoelectric ceramic type electronic voltage mutual induction device 4
Problem.
In the present embodiment, each phase line in the A phase lines 11, the B phase lines 12 and the C phase lines 13
The ground terminal of two piezoelectric ceramic type electronic voltage mutual induction devices 4 of road is connect with the light-to-current inversion digital-to-analogue harvester 7,
So that phase-to-ground voltage data transmission to the photoelectricity for the circuit for acquiring the piezoelectric ceramic type electronic voltage mutual induction device 4 becomes
Change digital-to-analogue harvester 7.
Specifically, on each phase line in the A phase lines 11, the B phase lines 12 and the C phase lines 13
The ground terminal of two piezoelectric ceramic type electronic voltage mutual induction devices 4 is filled by coaxial cable 8 and light-to-current inversion digital-to-analogue acquisition
Set 7 connections.
The breaker controller 6 is connect with the light-to-current inversion digital-to-analogue harvester 7, and the breaker controller 6 is used
The acquisition of electric current, voltage signal is carried out when controlling the light-to-current inversion digital-to-analogue harvester 7 in Circuit Breaker Switching.Wherein, institute
Stating breaker controller 6 can be achieved by the prior art, by acquiring voltage, the current signal of three phase mains, automatic monitoring electricity
The load of net system whether sustained overload.The principle of the breaker controller 6 is generally as follows：Three-phase voltage signal through it respectively
Voltage transformer (i.e. transformer) be transformed into the voltage signal of small signal, be adjusted to certain bandwidth through analog circuit, it is certain dynamic
The voltage signal of state range send AD to sample.Three-phase current, current in middle wire, earth current signal, through its respective current transformer
It is transformed into voltage form, is adjusted to certain bandwidth through analog circuit, the signal of certain dynamic range send AD to sample.Every a timing
Between monitoring three-phase current, current in middle wire, earth current have overloading free.Make countdown to it if having overloaded, count down time arrives
Dropout is sent out to operate a switch signal.When reactor 1 works normally, the light-to-current inversion digital-to-analogue harvester 7 is in off-line state.
The light-to-current inversion digital-to-analogue harvester 7 is connect with the processor 10, by the electronic current mutual inductor 2
The circuit phase-to-ground voltage signal transmission of current signal and piezoelectric ceramic type electronic voltage mutual induction device 4 acquisition of acquisition is extremely handled
Device 10.
In the present embodiment, the light-to-current inversion digital-to-analogue harvester 7 is connected by communicating twisted-pair feeder 9 with the processor 10
It connects, the communication twisted-pair feeder 9 is most common transmission medium in a kind of generic cabling engineering, is to have insulating protective layer by two
Copper conductor composition, the copper conductor that edge are thoroughly done away with two is twisted mutually together by certain density, each conducting wire spoke in the transmission
The electric wave that the electric wave shot out can be sent out on another single line is offset, and the degree of signal interference can be effectively reduced.
The electric current when processor 10 acquires reactor switching and is stored voltage signal, is that reactor switching is excessively electric
Pressure provides authentic data, is convenient for subsequently through voltage, electric current when the test breaker beginning, and combines live breaker to disintegrate and study
Contact between voltage, current waveform.
It is emphasized that the application is only related to through a kind of new hardware architecture, it is shunt reactor switching overvoltage
The offer authentic data such as theory analysis, and the analysis ablation degree of breaker fracture, powder is formationed, insulating capacity, this Shen
The hardware architecture connection relation of the technical issues of please solving also being only limitted to through the system, solves at present that there has been no can be with
For the problem of the providing dedicated system that reliable and accurate data are supported that work above, it is not related to the program sheet to processor 10
The improvement of application, i.e. the application solve the software program that technical problem does not need to use processor 10.
By above technical scheme it is found that the shunt reactor switching overvoltage test system that the utility model embodiment provides
System, including：A phase lines 11, B phase lines 12, C phase lines 13, breaker controller 6, light-to-current inversion digital-to-analogue harvester 7 and
Processor 10；One end of A phase lines 11, B phase lines 12 and C phase lines 13 is connected, A phase lines 11, B phase lines 12 and
Reactor 1, electronic current mutual inductor 2, breaker 3 and two pressures are both provided on each phase line in C phase lines 13
Electroceramics formula electronic voltage mutual induction device 4；Reactor 1 is concatenated with 3 phase of breaker, and electronic current mutual inductor 2 is sheathed on reactor 1
Between breaker 3, one end of two piezoelectric ceramic type electronic voltage mutual induction devices 4 is connect with the both ends of breaker 3 respectively, two
The other end of piezoelectric ceramic type electronic voltage mutual induction device 4 is grounded；It is every in A phase lines 11, B phase lines 12 and C phase lines 13
Electronic current mutual inductor 2 on one phase line is connect with light-to-current inversion digital-to-analogue harvester 7；A phase lines 11, B phase lines
The ground terminal of two piezoelectric ceramic type electronic voltage mutual induction devices 4 on each phase line in 12 and C phase lines 13 is and light
Electricity transformation digital-to-analogue harvester 7 connects；Breaker controller 6 is connect with light-to-current inversion digital-to-analogue harvester 7；Light-to-current inversion digital-to-analogue
Harvester 7 is connect with processor 10；Breaker fracture is flowed through when can acquire Circuit Breaker Switching by electronic current mutual inductor
Electric current, circuit phase-to-ground voltage is acquired by piezoelectric ceramic type electronic voltage mutual induction device, and can be by collected electric current, voltage
Signal is reached processor by signal transmission to light-to-current inversion digital-to-analogue harvester, and by light-to-current inversion digital-to-analogue harvester；
When circuit normal operation, light-to-current inversion digital-to-analogue harvester is in off-line state, is receiving what control device of circuit breaker was sent
The acquisition that light-to-current inversion digital-to-analogue harvester carries out data can be triggered when Circuit Breaker Switching signal, carry out continuous acquisition parallel reactance
Overvoltage value and breaker fracture electric current when device switching, it is reliable, accurate to be provided for shunt reactor switching Over-voltage Analysis theory
Test data basis.
Above the utility model embodiment does not constitute the restriction to scope of protection of the utility model.
Claims (5)
1. a kind of shunt reactor switching overvoltage tests system, which is characterized in that including：
A phase lines (11), B phase lines (12), C phase lines (13), breaker controller (6), light-to-current inversion digital-to-analogue harvester
(7) and processor (10)；
One end of the A phase lines (11), the B phase lines (12) and the C phase lines (13) is connected, the A phase lines
Reactor (1), electricity are both provided on each phase line in road (11), the B phase lines (12) and the C phase lines (13)
Type current transformer (2), breaker (3) and two piezoelectric ceramic type electronic voltage mutual induction devices (4)；
The reactor (1) mutually concatenates with the breaker (3), and the electronic current mutual inductor (2) is sheathed on the reactance
Between device (1) and the breaker (3), one end of described two piezoelectric ceramic type electronic voltage mutual induction devices (4) respectively with it is described
The both ends of breaker (3) connect, the other end ground connection of described two piezoelectric ceramic type electronic voltage mutual induction devices (4)；
The electronics on each phase line in the A phase lines (11), the B phase lines (12) and the C phase lines (13)
Formula current transformer (2) is connect with the light-to-current inversion digital-to-analogue harvester (7)；
Two on each phase line in the A phase lines (11), the B phase lines (12) and the C phase lines (13)
The ground terminal of piezoelectric ceramic type electronic voltage mutual induction device (4) is connect with the light-to-current inversion digital-to-analogue harvester (7)；
The breaker controller (6) connect with the light-to-current inversion digital-to-analogue harvester (7)；
The light-to-current inversion digital-to-analogue harvester (7) connect with the processor (10).
2. shunt reactor switching overvoltage as described in claim 1 tests system, which is characterized in that the A phase lines
(11), the electronic current mutual inductor (2) on each phase line in the B phase lines (12) and the C phase lines (13)
It is connect with the light-to-current inversion digital-to-analogue harvester (7) by telecommunication optical fiber (5).
3. shunt reactor switching overvoltage as described in claim 1 tests system, which is characterized in that the A phase lines
(11), two piezoelectric ceramic type electronics electricity on each phase line in the B phase lines (12) and the C phase lines (13)
The ground terminal of pressure mutual inductor (4) is connect by coaxial cable (8) with the light-to-current inversion digital-to-analogue harvester (7).
4. shunt reactor switching overvoltage as described in claim 1 tests system, which is characterized in that the light-to-current inversion number
Mould harvester (7) is connect by communicating twisted-pair feeder (9) with the processor (10).
5. shunt reactor switching overvoltage as described in claim 1 tests system, which is characterized in that the electronic current
Mutual inductor (2) is located at the piezoelectric ceramics close to the reactor (1) in described two piezoelectric ceramic type electronic voltage mutual induction devices (4)
Between formula electronic voltage mutual induction device (4) and the reactor (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820315847.2U CN207798936U (en) | 2018-03-08 | 2018-03-08 | Shunt reactor switching overvoltage tests system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820315847.2U CN207798936U (en) | 2018-03-08 | 2018-03-08 | Shunt reactor switching overvoltage tests system |
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| Publication Number | Publication Date |
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| CN207798936U true CN207798936U (en) | 2018-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196117A (en) * | 2018-03-08 | 2018-06-22 | 云南电网有限责任公司电力科学研究院 | Shunt reactor switching overvoltage tests system |
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2018
- 2018-03-08 CN CN201820315847.2U patent/CN207798936U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196117A (en) * | 2018-03-08 | 2018-06-22 | 云南电网有限责任公司电力科学研究院 | Shunt reactor switching overvoltage tests system |
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