CN110118929A - One kind cut-offfing equipment testing device and test method - Google Patents
One kind cut-offfing equipment testing device and test method Download PDFInfo
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- CN110118929A CN110118929A CN201810916506.5A CN201810916506A CN110118929A CN 110118929 A CN110118929 A CN 110118929A CN 201810916506 A CN201810916506 A CN 201810916506A CN 110118929 A CN110118929 A CN 110118929A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The present invention provides one kind to cut-off equipment testing device and test method, and the test device includes: the first charging circuit, the second charging circuit and a discharge circuit；First charging circuit is connect with the discharge circuit, can be discharged by control after the charging circuit charging, be provided electric current to discharge circuit；Second charging circuit is connect with the discharge paths, can be discharged by control after the charging circuit charging, be provided electric current to discharge circuit；The discharge circuit, which is equipped with, is used to access the port for cut-offfing equipment.The test method be based on the test device to it is to be detected cut-off equipment cut-off, close a floodgate and reclosing test.The present invention realizes effective comprehensive test to the break performance for cut-offfing equipment.
Description
Technical field
The invention belongs to power electronics fields more particularly to one kind to cut-off equipment testing device and test method.
Background technique
Cut-offfing equipment is the important devices in electrical power trans mission/distribution system, is mainly used for closing, cut-offs exception before the deadline
Electric current under circuit condition.Electric current cut-offs test and play an important role in cut-offfing equipment R&D process, is that equipment is cut-off in examination
The main means of break performance.It is connected in the prior art with discharge capacity with inductance, electric current increases to simulate electricity when capacitor discharges
Road failure tests the break performance for cut-offfing equipment with this.But in practical application, cut-offs equipment and do not need only to have disconnection failure electricity
The ability of stream, it is also necessary to can close, reclosing.Therefore have to the service check for cut-offfing equipment and higher more fully require.
Summary of the invention
It is an object of the invention to overcome above-mentioned defect existing in the prior art, one kind is provided and cut-offs equipment testing device
And test method.
Aspect of the invention provides one kind and cut-offs equipment testing device, comprising:
First charging circuit, the second charging circuit and a discharge circuit；
First charging circuit is connect with the discharge circuit, can be discharged by control after the charging circuit charging,
Electric current is provided to discharge circuit；
Second charging circuit is connect with the discharge paths, can be discharged by control after the charging circuit charging,
Electric current is provided to discharge circuit；
The discharge circuit, which is equipped with, is used to access the port for cut-offfing equipment.
Further, first charging circuit includes concatenated first DC power supply, the first mechanical switch, the one or two pole
Pipe, first capacitor；Wherein the first mechanical switch is connected to the high-voltage end of the first DC power supply, and first capacitor is connected to the first direct current
The low-pressure end of power supply；First charging circuit further includes the third Fast mechanical switch connecting with first capacitor hot end；
Second charging circuit includes concatenated second DC power supply, the second mechanical switch, the second diode, the second electricity
Hold；Wherein the second mechanical switch is connected to the high-voltage end of the second DC power supply, and the second capacitance connection is low in the second DC power supply
Pressure side；Second charging circuit further includes the 4th Fast mechanical switch connecting with the second capacitor hot end；
The third Fast mechanical switch, the 4th Fast mechanical switch are connected；The power supply low-pressure end of two charging circuits
It is connected；
The discharge circuit includes a concatenated current-limiting reactor, for accessing the port to be tested for cut-offfing equipment,
One solid-state switch；
The current-limiting reactor is connect with third Fast mechanical switch, the 4th Fast mechanical switch；The solid-state is opened
Pass is connect with the low-pressure end of two power supplys；
It is further, described to cut-off equipment testing device, further includes:
One leadage circuit；
The leadage circuit includes a dissipative cell；
The leadage circuit is connected in parallel on the solid-state switch both ends.
It is further, described to cut-off equipment testing device, further includes:
One test monitoring device, the test monitoring device include: current monitoring device, and voltage monitor is used
To control the controller of mechanical switch and Fast mechanical switch movement.
Another aspect of the present disclosure, provide it is a kind of based on the above-mentioned test method of cut-offfing for cut-offfing equipment testing device, including
Following steps:
Before test, the first charging circuit, the second charging circuit, discharge circuit are respectively at nonconducting state, runin to be measured
Between the test port that disconnected equipment access discharge circuit provides；
Equipment to be tested of cut-offfing is in "on" position；
Solid-state switch conducting, leadage circuit are bypassed；
It is closed the first mechanical switch, control the first charging circuit conducting, to the capacitor charging in the first charging circuit, charging
The first mechanical switch is disconnected after the completion, disconnects the first charging circuit；
When test, it is closed third mechanical switch, the first charging circuit of control is connected to discharge circuit, in the first charging circuit
First capacitor electric discharge, form oscillating circuit with the current-limiting reactor in discharge circuit, electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes sub-switching operation；
After the predetermined time, solid-state switch is disconnected, leadage circuit is by access discharge circuit, residual charge of releasing.
Another aspect of the present disclosure also provides a kind of based on the above-mentioned test method that closes for cut-offfing equipment testing device, packet
Include following steps:
Before test, the first charging circuit, the second charging circuit, discharge circuit are respectively at nonconducting state, runin to be measured
Between the test port that disconnected equipment access discharge circuit provides；
Equipment to be tested of cut-offfing is in gate-dividing state；
Solid-state switch conducting, leadage circuit are bypassed；
It is closed the first mechanical switch, control the first charging circuit conducting, to the capacitor charging in the first charging circuit, charging
The first mechanical switch is disconnected after the completion, disconnects the first charging circuit；
When test, it is closed third mechanical switch, the first charging circuit of control is connected to discharge circuit, in the first charging circuit
First capacitor electric discharge, form oscillating circuit with the current-limiting reactor in discharge circuit, electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes closing operation；
After the predetermined time, solid-state switch is disconnected, leadage circuit is by access discharge circuit, residual charge of releasing.
Closing operation is used for the quick crowbar in the case of analog circuit fault, is operated for several milliseconds after fault.
Primarily to whether validation fault is permanent fault, if then backing off failure on-off equipment, if not then being closed
Lock.
Another aspect of the present disclosure, also provide it is a kind of based on the above-mentioned reclosing test method for cut-offfing equipment testing device,
The following steps are included:
Before test, the first charging circuit, the second charging circuit, discharge circuit are respectively at nonconducting state, runin to be measured
Between the test port that disconnected equipment access discharge circuit provides；
Equipment to be tested of cut-offfing is in "on" position；
Solid-state switch conducting, leadage circuit are bypassed；
It is closed the first mechanical switch, control the first charging circuit conducting, to the capacitor charging in the first charging circuit, charging
The first mechanical switch is disconnected after the completion, disconnects the first charging circuit；
It is closed the second mechanical switch, control the second charging circuit conducting, to the capacitor charging in the second charging circuit, charging
The second mechanical switch is disconnected after the completion, disconnects the second charging circuit；
When test, it is closed third mechanical switch, the first charging circuit of control is connected to discharge circuit, in the first charging circuit
First capacitor electric discharge, form oscillating circuit with the current-limiting reactor in discharge circuit, electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes sub-switching operation；
After the predetermined time, third mechanical switch is disconnected, the first charging circuit of control and discharge circuit disconnect, closure the
Four mechanical switch, the second charging circuit of control are connected to discharge circuit, the capacitor electric discharge in the second charging circuit, with discharge circuit
In reactor form oscillating circuit, electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes reclosing operation；
After the predetermined time, solid-state switch is disconnected, leadage circuit, which connects, is entered discharge circuit, residual charge of releasing.
Reclosing be it is a kind of after a failure several hundred milliseconds progress operation, for judge system whether successful implementation failure every
From and restore, close a floodgate if being successfully recovered, if unsuccessful continue separating brake.
Cut-off shown in the present invention equipment testing device can effective simulated failure electric current, to cut-offfing equipment break performance, close
Lock performance, reclosing performance are tested.Realize effective complete examination to the performance for cut-offfing equipment.
It should be understood that foregoing general description and following detailed description are all exemplary, and it is intended to mention
For the further explanation of claimed technology.
Detailed description of the invention
The embodiment of the present invention is described in more detail in conjunction with the accompanying drawings, the above and other purposes of the present invention,
Feature and advantage will be apparent.Attached drawing is used to provide to further understand the embodiment of the present invention, and constitutes explanation
A part of book, is used to explain the present invention together with the embodiment of the present invention, is not construed as limiting the invention.Except non-clearly referring to
Out, otherwise attached drawing is not considered as drawn to scale.In the accompanying drawings, identical reference label typically represents same components or step.
In the accompanying drawings:
Fig. 1 shows current controller and cut-offs test circuit diagram.
Fig. 2 shows the processes that electric current in current controller interrupting process changes over time.
Specific embodiment
In order to enable the object, technical solutions and advantages of the present invention become apparent, root is described in detail below with reference to accompanying drawings
According to example embodiments of the present invention.Obviously, described embodiment is only a part of the embodiments of the present invention, rather than this hair
Bright whole embodiments, it should be appreciated that the present invention is not limited by example embodiment described herein.Based on reality described herein
Example is applied, those skilled in the art's obtained all other embodiment in the case where not making the creative labor should all be fallen into
Within protection scope of the present invention.
The invention discloses one kind to cut-off equipment testing device and test method, and the embodiment of the present invention is made with current controller
For cut-offfing equipment, test device and test method are described in detail, but are not limited to current controller, it is any can be real
The equipment that existing circuit is cut-off may be applicable to the present invention.
Fig. 1 shows current controller and cut-offs test circuit diagram, comprising:
First charging circuit, the second charging circuit and a discharge circuit；
First charging circuit is connect with the discharge circuit, can be discharged by control after the charging circuit charging,
Electric current is provided to discharge circuit；
Second charging circuit is connect with the discharge paths, can be discharged by control after the charging circuit charging,
Electric current is provided to discharge circuit；
The discharge circuit is equipped with the port for being used to access the current controller.
First charging circuit includes concatenated DC power supply DC1, mechanical switch K1, a diode D1, an electricity
Hold Cs1；Wherein mechanical switch K1 is connected to the high-voltage end of DC power supply, and capacitor Cs1 is connected to the low-pressure end of DC power supply；First
Charging circuit further includes the Fast mechanical switch K3 connecting with capacitor Cs1 hot end；
Second charging circuit includes concatenated DC power supply DC2, mechanical switch K2, a diode D2, an electricity
Hold Cs2；Wherein mechanical switch K2 is connected to the high-voltage end of DC power supply, and capacitor Cs2 is connected to the low-pressure end of DC power supply；Second
Charging circuit further includes the Fast mechanical switch K4 connecting with capacitor Cs2 hot end；
Described K3, K4 are connected；Power supply DC1, DC2 low-pressure end of two charging circuits is connected；
The discharge circuit includes concatenated current-limiting reactor Ls, current controller to be tested, a solid-state
Switch；
In the present embodiment, the current controller includes a current limiter LK, and a Fast mechanical switch KT, one is changed
Flow branch, a metal oxide varistor MOV；Wherein mechanical switch KT, change of current branch, metal oxide varistor
MOV connects after being connected in parallel with current limiter LK；The change of current branch routes a charge power supply, a capacitor, a solid-state switch
Composition；
The current limiter LK of the current controller is connect with current-limiting reactor Ls, and the other end and the solid-state of current controller are opened
Connection connects；
The current-limiting reactor Ls is connect with K3, K4；The concatenated solid-state switch of the discharge circuit and two power supplys
The low-pressure end of DC1, DC2 connect；
The current controller test device further includes a leadage circuit；The leadage circuit includes an energy consumption
Resistance Rs；It states leadage circuit and is connected in parallel on the solid-state switch both ends.
The current controller test device further includes a test monitoring device, the test monitoring device packet
It includes: current monitoring device CT, voltage monitor VT, for controlling the controller of mechanical switch and Fast mechanical switch movement.
The invention also discloses a series of test methods based on current controller test device.It include: that electric current cut-offs survey
Method for testing, electric current close test method, reclosing test method；Test method is described in detail respectively below.
Electric current cut-offs test method, specific steps are as follows:
Before test, switching switch K1, K2, K3, K4 are in gate-dividing state, and solid-state switch is in the conductive state, electric current to be measured
Controller is in "on" position, and current controller is in combined floodgate monitoring state；
It controls K1 to close a floodgate, starting DC charging power supply DC1 charges to given voltage to capacitor group Cs1, then controls K1
Separating brake terminates charging；
When test, K3 closes a floodgate, and capacitor group Cs1 is discharged by reactor Ls, and discharge circuit electric current rises.By pre-
Current controller executes sub-switching operation after fixing time；In the present embodiment, certain time is generally several milliseconds to a few tens of milliseconds, described
Sub-switching operation is used to detect the ability whether current controller has separating brake turn-off current under certain condition.
After the predetermined time, solid-state switch, residual charge of releasing are disconnected.In the present embodiment, certain time is generally several
Millisecond.Remaining electric operation effective protection of releasing circuit element, avoids current controller and is unable to normal operation and causes element
Damage.
Electric current closes test method, specific steps are as follows:
Before test, switching switch K1, K2, K3, K4 are in gate-dividing state, and solid-state switch is in the conductive state, electric current to be measured
Controller is in gate-dividing state；
It controls K1 to close a floodgate, starting DC charging power supply DC1 charges to given voltage to capacitor group Cs1, then controls K1
Separating brake terminates charging；
When test, K3 closes a floodgate, and capacitor group Cs1 is discharged by reactor Ls, and discharge circuit electric current rises, by pre-
Current controller executes closing operation after fixing time；In the present embodiment, the predetermined time is several milliseconds to a few tens of milliseconds.The combined floodgate
Operation is used to detect current controller whether have an ability closed a floodgate under certain condition, in practical application, occur when circuit therefore
Hinder, after current controller automatic brake separating, has and close a floodgate trial throw to current controller to confirm demand existing for failure.
After the predetermined time, solid-state switch, residual charge of releasing are disconnected.In the present embodiment, certain time is several milliseconds.
Remaining electric operation effective protection of releasing circuit element, avoids current controller and is unable to normal operation and causes component wear.
Reclosing test method, specific steps are as follows:
Before test, switching switch K1, K2, K3, K4 are in "on" position, and solid-state switch is in the conductive state, electric current to be measured
Controller is in "on" position；
It controls K1 to close a floodgate, starting DC charging power supply DC1 charges to given voltage to capacitor group Cs1, then controls K1
Separating brake terminates charging；
It controls K2 to close a floodgate, starting DC charging power supply DC2 charges to given voltage to capacitor group Cs2, then controls K2
Separating brake terminates charging；
When test, K3 closes a floodgate, and capacitor group Cs1 is discharged by reactor Ls, and discharge circuit electric current rises, by pre-
After fixing time, current controller executes sub-switching operation；In the present embodiment, certain time is generally several milliseconds to a few tens of milliseconds.
By the predetermined time, generally hundreds of milliseconds, separating brake K3, combined floodgate K4；Determined again after a certain period of time, current controller
Execute reclosing operation；Certain time is generally hundreds of milliseconds.
After the predetermined time, solid-state switch, residual charge of releasing are disconnected.In the present embodiment, certain time is generally several
Millisecond.Remaining electric operation effective protection of releasing circuit element, avoiding current controller cannot normally operate and cause element
Damage.
Using a kind of current controller test device and test method described in the disclosure, can the effectively equivalent change of current stage it is extensive
The dynamic process of complex voltage and fault current can cut-off current controller and be closed two kinds of functions and be detected.Dress
The setting of two charging circuits in setting is capable of providing in certain time interval the analog current of continuous closing operation twice.Therefore,
Current controller test device and test method described in the disclosure can carry out current controller practical application scene multi-party
The equivalent test in face provides guarantee for the reliability of current controller.
In the present embodiment, current controller be it is a kind of can under monitoring current variation and certain condition turn-off current dress
It sets.2 pairs of fault current controllers interrupting processes are described briefly with reference to the accompanying drawing:
3 stages: electric current ascent stage, change of current stage and recovery voltage stage are broadly divided into during breaking test.
1) electric current ascent stage (t1-t3): t1 moment K1 was closed, current source circuit discharge capacity Cs1 and current-limiting reactor
Ls oscillation generates power current i1 analog DC fault current, and electric current i1 flows through subject mechanical switch KT.T2 moment current control
Device receives separating brake order and starts separating brake arcing, reach before current peak effectively open away from.
2) change of current stage (t3-t4): t3 moment, electric current i1 reach peak value, and the solid-state switch of change of current branch road, which receives, leads
Logical order, change of current branch generates high frequency reverse current i2, while being superimposed upon on KT, and as i2=i1, KT current over-zero is cut-off, and is changed
Solid-state switch in stream branch receives ON- and OFF- command.
3) restore voltage stage (t > t4): after KT current over-zero blow-out, the oscillation of change of current branched portion generates transient state and restores electricity
Pressure (TRV) is added in MOV fracture both ends, and fault current is consumed by MOV at this time.
Those skilled in the art should understand that: the above embodiments are only used to illustrate the technical solution of the present invention., and
It is non-that it is limited；Although present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can
To modify the technical solutions described in the foregoing embodiments, or some or all of the technical features are carried out etc.
With replacement；And these are modified or replaceed, the range of it does not separate the essence of the corresponding technical solution claims of the present invention.
Claims (7)
1. one kind cut-offs equipment testing device characterized by comprising
First charging circuit, the second charging circuit and a discharge circuit；
First charging circuit is connect with the discharge circuit, can be discharged by control after charging circuit charging, to putting
Circuit provides electric current；
Second charging circuit is connect with the discharge paths, can be discharged by control after charging circuit charging, to putting
Circuit provides electric current；
The discharge circuit, which is equipped with, is used to access the port for cut-offfing equipment.
2. according to claim 1 cut-off equipment testing device, which is characterized in that
First charging circuit includes concatenated first DC power supply, the first mechanical switch, first diode, first capacitor；
Wherein the first mechanical switch is connected to the high-voltage end of the first DC power supply, and first capacitor is connected to the low pressure of the first DC power supply
End；First charging circuit further includes the third Fast mechanical switch connecting with first capacitor hot end；
Second charging circuit includes concatenated second DC power supply, the second mechanical switch, the second diode, the second capacitor；
Wherein the second mechanical switch is connected to the high-voltage end of the second DC power supply, and the second capacitance connection is in the low pressure of the second DC power supply
End；Second charging circuit further includes the 4th Fast mechanical switch connecting with the second capacitor hot end；
The third Fast mechanical switch, the 4th Fast mechanical switch are connected；The power supply low-pressure end of two charging circuits is connected
It connects；
The discharge circuit includes a concatenated current-limiting reactor, for accessing the port to be tested for cut-offfing equipment, one
Solid-state switch；
The current-limiting reactor is connect with third Fast mechanical switch, the 4th Fast mechanical switch；The solid-state switch with
The low-pressure end of two power supplys connects.
3. according to claim 2 cut-off equipment testing device, which is characterized in that
It further include a leadage circuit；
The leadage circuit includes a dissipative cell；
The leadage circuit is connected in parallel on the solid-state switch both ends.
4. according to claim 1 cut-off equipment testing device, which is characterized in that it further include a test monitoring device,
The test monitoring device includes: current monitoring device, and voltage monitor is opened for controlling mechanical switch with Quick mechanical
The controller of pass movement.
5. a kind of based on the test method of cut-offfing described in any one of Claims 1-4 for cut-offfing equipment testing device, feature
It is, comprising the following steps:
Before test, the first charging circuit, the second charging circuit, discharge circuit are respectively at nonconducting state, and to be tested cut-off sets
Between the test port that standby access discharge circuit provides；
Equipment to be tested of cut-offfing is in "on" position；
Solid-state switch conducting, leadage circuit are bypassed；
It is closed the first mechanical switch, control the first charging circuit conducting, to the capacitor charging in the first charging circuit, charging complete
After disconnect the first mechanical switch, disconnect the first charging circuit；
When test, it is closed third mechanical switch, the first charging circuit of control is connected to discharge circuit, and the in the first charging circuit
The electric discharge of one capacitor forms oscillating circuit with the current-limiting reactor in discharge circuit, and electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes sub-switching operation；
After the predetermined time, solid-state switch is disconnected, leadage circuit is by access discharge circuit, residual charge of releasing.
6. a kind of based on the test method that closes described in any one of Claims 1-4 for cut-offfing equipment testing device, feature
It is, comprising the following steps:
Before test, the first charging circuit, the second charging circuit, discharge circuit are respectively at nonconducting state, and to be tested cut-off sets
Between the test port that standby access discharge circuit provides；
Equipment to be tested of cut-offfing is in gate-dividing state；
Solid-state switch conducting, leadage circuit are bypassed；
It is closed the first mechanical switch, control the first charging circuit conducting, to the capacitor charging in the first charging circuit, charging complete
After disconnect the first mechanical switch, disconnect the first charging circuit；
When test, it is closed third mechanical switch, the first charging circuit of control is connected to discharge circuit, and the in the first charging circuit
The electric discharge of one capacitor forms oscillating circuit with the current-limiting reactor in discharge circuit, and electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes closing operation；
After the predetermined time, solid-state switch is disconnected, leadage circuit is by access discharge circuit, residual charge of releasing.
7. it is a kind of based on the reclosing test method described in any one of Claims 1-4 for cut-offfing equipment testing device, it is special
Sign is, comprising the following steps:
Before test, the first charging circuit, the second charging circuit, discharge circuit are respectively at nonconducting state, and to be tested cut-off sets
Between the test port that standby access discharge circuit provides；
Equipment to be tested of cut-offfing is in "on" position；
Solid-state switch conducting, leadage circuit are bypassed；
It is closed the first mechanical switch, control the first charging circuit conducting, to the capacitor charging in the first charging circuit, charging complete
After disconnect the first mechanical switch, disconnect the first charging circuit；
It is closed the second mechanical switch, control the second charging circuit conducting, to the capacitor charging in the second charging circuit, charging complete
After disconnect the second mechanical switch, disconnect the second charging circuit；
When test, it is closed third mechanical switch, the first charging circuit of control is connected to discharge circuit, and the in the first charging circuit
The electric discharge of one capacitor forms oscillating circuit with the current-limiting reactor in discharge circuit, and electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes sub-switching operation；
After the predetermined time, third mechanical switch is disconnected, the first charging circuit of control and discharge circuit disconnect, and are closed the 4th machine
Tool switch, the second charging circuit of control are connected to discharge circuit, the capacitor electric discharge in the second charging circuit, in discharge circuit
Reactor forms oscillating circuit, and electric current increases in circuit；
After the predetermined time, control cut-offs equipment and executes reclosing operation；
After the predetermined time, solid-state switch is disconnected, leadage circuit, which connects, is entered discharge circuit, residual charge of releasing.
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| CN201810916506.5A CN110118929B (en) | 2018-08-13 | 2018-08-13 | Testing device and testing method for cut-off equipment |
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| CN201810916506.5A CN110118929B (en) | 2018-08-13 | 2018-08-13 | Testing device and testing method for cut-off equipment |
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