CN110261763A - A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time - Google Patents
A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time Download PDFInfo
- Publication number
- CN110261763A CN110261763A CN201910474130.1A CN201910474130A CN110261763A CN 110261763 A CN110261763 A CN 110261763A CN 201910474130 A CN201910474130 A CN 201910474130A CN 110261763 A CN110261763 A CN 110261763A
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- China
- Prior art keywords
- breaker
- current
- branch wire
- terminal
- surveying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
-
- 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
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
Abstract
The invention discloses a kind of DC current inducing methods for surveying breaker two-terminal-grounding branch wire time, comprising the following steps: 1) applies exciting current at earthing switch two；2) pass through hall sensing CT sensor current signal；3) according to the presence or absence of hall sensing CT sensor current signal state, to judge branch wire time；It solves when traditional switch mechanic character tester is unable to measure breaker two-terminal-grounding branch wire time and current and voltage method measurement accuracy existing on the market is high at present, the time is difficult to judge, it is easy the problems such as being interfered in measurement, while improving the safety in measurement.
Description
Technical field
The present invention relates to a kind of DC current inducing methods for surveying breaker two-terminal-grounding branch wire time.
Background technique
High-voltage circuitbreaker bears the dual role of control and protection in the power system, and the quality of state directly affects
The safe operation of electric system, the switching on and off time of high-tension switch gear and alternate same period performance, except directly affecting switch
Normal division function and safe operation are outer, are also relate to the safe switching of the other equipment of system, the height of internal overvoltage, are aligned
It is correctly measured significant.
Traditional test method needs for a connecting line to be connected to the port two sides of breaker, therefore it is required that breaker
Port at least side is in open-circuit condition and just can be carried out；But part combined electrical apparatus switch disconnector two sides need mother without leading point
Line power failure can just be unlocked operation, if tested with adjacent outgoing line interval, wherein can be related to difficult, the increase safety that has a power failure
The problems such as risk；Part breaker is in open-circuit condition to meet test condition at least side simultaneously, needs to carry out high-altitude solution
Line work, increases workload and security risk.Equipment and test method traditional simultaneously is carrying out breaker both ends divide-shut brake
It when the measurement of time, is interfered by external factor, causes accuracy of measurement lower, measure the problem of numerical value inaccuracy.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of convenient tests, and measurement is accurate, can solve traditional switch machinery
Branch wire time and existing current and voltage method measurement on the market at present when characteristic tester is unable to measure breaker two-terminal-grounding
Precision is not high, and the time is difficult to judge, the problems such as being interfered is easy in measurement, reduces operational risk, has security reliability
The DC current inducing method of the survey breaker two-terminal-grounding branch wire time of effect.
To solve the above problems, the present invention adopts the following technical scheme:
A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time, comprising the following steps:
1) apply exciting current at earthing switch two；
2) pass through hall sensing CT sensor current signal；
3) according to the presence or absence of hall sensing CT sensor current signal state, to judge branch wire time.
Preferably, exciting current is applied to the side that earthing switch two is located at grounding copper bar in step 1).
Preferably, hall sensing CT is added between exciting current and earthing switch two in step 2).
Preferably, sensor current signal is acquired by signal transmitting and test device in step 3), signal transmitting and test
Device is connect with hall sensing CT.
Preferably, when hall sensing CT senses current signal in step 3), breaker is "on" position.
Preferably, when hall sensing CT is not sensed by current signal in step 3), breaker is gate-dividing state.
Preferably, the signal transmitting and test device are equipped with test clip, connect at test clip and grounding copper bar, signal
Transmitting and test device emit exciting current by test clip.
The beneficial effects of the present invention are: convenient test, can accurately measure the time of circuit-breaker switching on-off, can solve
When certainly traditional switch mechanic character tester is unable to measure breaker two-terminal-grounding branch wire time and at present it is existing on the market
Current and voltage method measurement accuracy is not high, the time is difficult to judge, the problems such as being interfered is easy in measurement, saves the operating time,
Operational risk is reduced, there is security reliability effect.
Detailed description of the invention
Illustrate the embodiment of the present invention or technical solution in the prior art for more Chu, it below will be to embodiment or existing
Attached drawing needed in technical description is briefly described, but is not limiting the scope of the invention.
Fig. 1 is measurement process schematic diagram of the invention；
Fig. 2 is current loop schematic diagram when the present invention closes a floodgate；
Current loop schematic diagram when Fig. 3 is separating brake of the present invention；
Specific embodiment
A kind of DC current inducing method of survey breaker two-terminal-grounding branch wire time referring to FIG. 1 to 3, packet
It includes following steps: 1) applying exciting current at earthing switch two；2) pass through hall sensing CT sensor current signal；3) according to suddenly
The presence or absence of your induction CT sensor current signal state, to judge branch wire time.
Exciting current is applied to the side that earthing switch two is located at grounding copper bar in the step 1).
Hall sensing CT is added between exciting current and earthing switch two in the step 2).
Sensor current signal is acquired by signal transmitting and test device in the step 3), signal transmitting and test device
It is connect with hall sensing CT.
When hall sensing CT senses current signal in the step 3), breaker is "on" position.
When hall sensing CT is not sensed by current signal in the step 3), breaker is gate-dividing state.
Signal transmitting and test device are equipped with test clip, connects at test clip and grounding copper bar, signal emit with
Test device emits exciting current by test clip.
The present invention in use, first by test clip will signal transmitting and test device and grounding copper bar at connect, will suddenly
That induction CT is arranged between test clip and earthing switch two, is swashed by signal transmitting and test device to application at grounding copper bar
Electric current 1A or 10A are encouraged, when breaker open operation state, electric current is directly entered in earth mat without hall sensing CT, so that Hall
CT induction is incuded less than the exciting current signal that signal transmitting and test device issue；When breaker is in "on" position, letter
The exciting current that number transmitting and test device issue has part by hall sensing CT, and electric current successively passes through hall sensing CT, connects
Ground switch two, breaker, earthing switch one enter earth mat, while hall sensing CT senses current signal, and signal is transmitted
To signal transmitting and test device, signal transmitting and test device pass through the presence or absence of the hall sensing CT current signal incuded shape
State, to judge the circuit-breaker switching on-off time.Its convenient test can accurately measure the time of circuit-breaker switching on-off, energy
It solves branch wire time when traditional switch mechanic character tester is unable to measure breaker two-terminal-grounding and has on the market at present
Current and voltage method measurement accuracy is high, the time is difficult to judge, the problems such as being interfered is easy in measurement, when saving operation
Between, operational risk is reduced, there is security reliability effect.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, it is any without
The change or replacement that creative work is expected are crossed, should be covered by the protection scope of the present invention.Therefore, protection of the invention
Range should be determined by the scope of protection defined in the claims.
Claims (7)
1. a kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time, it is characterised in that: including following step
It is rapid:
1) apply exciting current at earthing switch two；
2) pass through hall sensing CT sensor current signal；
3) according to the presence or absence of hall sensing CT sensor current signal state, to judge branch wire time.
2. a kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time according to claim 1,
Be characterized in that: exciting current is applied to the side that earthing switch two is located at grounding copper bar in step 1).
3. a kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time according to claim 1,
Be characterized in that: hall sensing CT is added between exciting current and earthing switch two in step 2).
4. a kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time according to claim 1,
Be characterized in that: in step 3) sensor current signal by signal transmitting and test device acquire, signal transmitting and test device and
Hall sensing CT connection.
5. a kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time according to claim 4,
Be characterized in that: when hall sensing CT senses current signal in step 3), breaker is "on" position.
6. a kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time according to claim 4,
Be characterized in that: when hall sensing CT is not sensed by current signal in step 3), breaker is gate-dividing state.
7. a kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time according to claim 4,
Be characterized in that: signal transmitting and test device are equipped with test clip, connects at test clip and grounding copper bar, signal emit with
Test device emits exciting current by test clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474130.1A CN110261763A (en) | 2019-06-03 | 2019-06-03 | A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474130.1A CN110261763A (en) | 2019-06-03 | 2019-06-03 | A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110261763A true CN110261763A (en) | 2019-09-20 |
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ID=67916355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910474130.1A Pending CN110261763A (en) | 2019-06-03 | 2019-06-03 | A kind of DC current inducing method for surveying breaker two-terminal-grounding branch wire time |
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| CN (1) | CN110261763A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
| CN113267722A (en) * | 2021-05-20 | 2021-08-17 | 国网安徽省电力有限公司检修分公司 | Method and system for testing double-end grounding opening and closing time of high-voltage circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597275A (en) * | 2017-03-02 | 2017-04-26 | 福建瑞能博尔电力设备有限公司 | High-voltage switch motion characteristic test method and tester |
| CN208207158U (en) * | 2018-05-25 | 2018-12-07 | 广东电网有限责任公司 | The breaker performance testing device and system of the double earthing knife-switch of band |
| CN109298329A (en) * | 2018-11-23 | 2019-02-01 | 广东电网有限责任公司 | A kind of circuit-breaker switching on-off test method |
-
2019
- 2019-06-03 CN CN201910474130.1A patent/CN110261763A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597275A (en) * | 2017-03-02 | 2017-04-26 | 福建瑞能博尔电力设备有限公司 | High-voltage switch motion characteristic test method and tester |
| CN208207158U (en) * | 2018-05-25 | 2018-12-07 | 广东电网有限责任公司 | The breaker performance testing device and system of the double earthing knife-switch of band |
| CN109298329A (en) * | 2018-11-23 | 2019-02-01 | 广东电网有限责任公司 | A kind of circuit-breaker switching on-off test method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
| CN113267722A (en) * | 2021-05-20 | 2021-08-17 | 国网安徽省电力有限公司检修分公司 | Method and system for testing double-end grounding opening and closing time of high-voltage circuit breaker |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190920 |
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| RJ01 | Rejection of invention patent application after publication |