CN107276031A - The guard method of 35 kilovolts of dry-type air-core reactors in parallel - Google Patents
The guard method of 35 kilovolts of dry-type air-core reactors in parallel Download PDFInfo
- Publication number
- CN107276031A CN107276031A CN201710358889.4A CN201710358889A CN107276031A CN 107276031 A CN107276031 A CN 107276031A CN 201710358889 A CN201710358889 A CN 201710358889A CN 107276031 A CN107276031 A CN 107276031A
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- China
- Prior art keywords
- kilovolts
- dry
- parallel
- type air
- reactor
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
Abstract
The invention discloses the guard method of a kind of 35 kilovolts dry-type air-core reactors in parallel, it comprises the following steps：Step one, 35 kilovolts of dry-type air-core reactor active power in parallel are obtained；Step 2, judges whether described 35 kilovolts dry-type air-core reactor active power in parallel are more than or equal to predetermined threshold value, if it is satisfied, then starting protection method.The present invention can realize the reactor for efficiently, delicately, rapidly cutting off generation shorted-turn fault, it is to avoid the expansion of reactor interturn short circuit accident, to ensure the safe and reliable operation of other power equipments of transformer station.
Description
Technical field
The present invention relates to a kind of guard method of reactor, more particularly to a kind of 35 kilovolts of dry-type hollow electricity in parallel
The guard method of anti-device.
Background technology
35 kilovolts of dry-type air-core reactors have oil-free, it is lightweight, be readily transported and install, noise is low, maintenance side
Just with iron-core-free saturation, as dry reactor applies the increase with individual capacity on a large scale, as largely put into recent years
15000kVA-20000kVA 35kV dry type air core shunt reactors, but the thing followed is the dry type reactance of this Large Copacity
Device shorted-turn fault rate is sharply increased, and certain harm is caused to electric power netting safe running, still, due to traditional overcurrent and mistake
Voltage protection is relatively low to the sensitivity of turn-to-turn short circuit accident so that the dry-type air-core reactor in parallel for occurring turn-to-turn short circuit is difficult to height
Imitate ground, delicately, rapidly cut off, cause some reactor interturn short circuit fault spreads, or even occur fire, serious influence
The safe operation of transformer station's other equipment.
The content of the invention
The technical problems to be solved by the invention are to provide the protection of a kind of 35 kilovolts dry-type air-core reactors in parallel
Method, it can realize the reactor for efficiently, delicately, rapidly cutting off generation shorted-turn fault, it is to avoid reactor turn-to-turn
The expansion of short circuit accident, to ensure the safe and reliable operation of other power equipments of transformer station.
The present invention is to solve above-mentioned technical problem by following technical proposals：A kind of 35 kilovolts of dry types in parallel are empty
The guard method of core device, it comprises the following steps：
Step one, 35 kilovolts of dry-type air-core reactor active power in parallel are obtained；
Step 2, judges whether described 35 kilovolts dry-type air-core reactor active power in parallel are more than or equal to default
Threshold value, if it is satisfied, then starting protection method.
Preferably, in the step one, obtaining 35 kilovolts of dry-type air-core reactor active power in parallel includes obtaining
Normal current voltage phase angle, the acquisition pattern of normal current voltage phase angle specifically includes following steps：By installed in institute
Reactor when stating the voltage transformer summation current transformer on reactor bus to normal operation is sampled, and fortune is obtained in real time
35 kilovolts of dry-type air-core reactor active power in parallel during row, with described normal 35 kilovolts dry-type hollow reactance in parallel
Device active power is initial reference amount.
Preferably, the step 2 specifically includes following steps：According to protection determination methods, described 35 kilovolts are judged
The absolute value of dry-type air-core reactor active power in parallel and the comparative result of predetermined threshold value.
Preferably, the absolute value of described 35 kilovolts dry-type air-core reactor active power in parallel is more than or equal to initial
Twice of reference quantity, then occur turn-to-turn short circuit, exports switch of the control signal to the reactor, and trigger switch is acted,
Start the guard method, cut off the reactor for occurring turn-to-turn short circuit.
Preferably, the absolute value differed between the Current Voltage phase angle is less than initial reference amount, then turn-to-turn does not occur
Short circuit, does not start the guard method.
The positive effect of the present invention is：The present invention, which can be realized, efficiently, delicately, rapidly cuts off generation turn-to-turn
The reactor of short trouble, it is to avoid the expansion of reactor interturn short circuit accident, to ensure the safety of other power equipments of transformer station
Reliability service.
Brief description of the drawings
Fig. 1 is 35 kilovolts (35kv) dry-type air-core reactor active power in parallel shown in embodiments of the invention
The flow chart of guard method.
Fig. 2 is that middle part turn-to-turn occurs for the BKDK-20000/35 dry-type air-core reactors in parallel shown in embodiments of the invention
The situation schematic diagram of 35 kilovolts of dry-type air-core reactor active power changes in parallel when short-circuit.
Embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, to describe technical scheme in detail.
As shown in Figure 1 to Figure 2, the guard method of 35 kilovolts of present invention dry-type air-core reactor in parallel includes following step
Suddenly：
Step S1, obtains 35 kilovolts of dry-type air-core reactor active power in parallel；
Step S2, judges whether described 35 kilovolts dry-type air-core reactor active power in parallel are more than or equal to default
Threshold value, if it is satisfied, then starting protection method.
In the step S1, obtaining 35 kilovolts of dry-type air-core reactor active power in parallel includes obtaining normal current
Voltage phase angle, the acquisition pattern of normal current voltage phase angle specifically includes following steps：By installed in the reactor
Reactor when voltage transformer summation current transformer on bus is to normal operation is sampled, and is obtained in real time 30 when running
Five kilovolts of dry-type air-core reactor active power in parallel, with described normal 35 kilovolts dry-type air-core reactor wattful powers in parallel
Rate is initial reference amount.
The step S2 specifically includes following steps：According to protection determination methods, judge that 35 kilovolts of parallel connections are done
The absolute value of formula air reactor active power and the comparative result of predetermined threshold value.
The absolute value of described 35 kilovolts dry-type air-core reactor active power in parallel is more than or equal to initial reference amount
Twice, then occur turn-to-turn short circuit, export a control signal give the reactor switch, trigger switch action, start institute
Guard method is stated, the reactor for occurring turn-to-turn short circuit is cut off.
The absolute value differed between the Current Voltage phase angle is less than initial reference amount, then turn-to-turn short circuit does not occur, no
Start the guard method.
The operation principle of the present invention is as follows：Embodiment provides the guarantor of a kind of 35 kilovolts dry-type air-core reactors in parallel
Maintaining method, comprises the following steps：Obtain 35 kilovolts of dry-type air-core reactor active power in parallel；Set up and be based on 35,000
The protection determination methods of volt dry-type air-core reactor active power in parallel；According to this method, 35 kilovolts of dry types in parallel are judged
Whether air reactor active power is more than or equal to predetermined threshold value, if it is satisfied, then starting protection method；What the present invention was provided
Method, based on the protection determination methods of 35 kilovolts of dry-type air-core reactor active power in parallel, can be achieved efficiently, it is sensitive
The reactor of shorted-turn fault occurs for ground, rapidly excision, it is to avoid the expansion of reactor interturn short circuit accident, to ensure power transformation
Stand the safe and reliable operations of other power equipments.
In summary, the present invention can realize the reactance for efficiently, delicately, rapidly cutting off generation shorted-turn fault
Device, it is to avoid the expansion of reactor interturn short circuit accident, to ensure the safe and reliable operation of other power equipments of transformer station.
Particular embodiments described above, technical problem, technical scheme and beneficial effect to the solution of the present invention are carried out
It is further described, should be understood that the specific embodiment that the foregoing is only of the invention, be not limited to
The present invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in this
Within the protection domain of invention.
Claims (5)
1. the guard method of a kind of 35 kilovolts dry-type air-core reactors in parallel, it is characterised in that it comprises the following steps：
Step one, 35 kilovolts of dry-type air-core reactor active power in parallel are obtained；
Step 2, judges whether described 35 kilovolts dry-type air-core reactor active power in parallel are more than or equal to default threshold
Value, if it is satisfied, then starting protection method.
2. the guard method of 35 kilovolts as claimed in claim 1 dry-type air-core reactors in parallel, it is characterised in that described
In step one, obtaining 35 kilovolts of dry-type air-core reactor active power in parallel includes obtaining normal current voltage phase angle,
The acquisition pattern of normal current voltage phase angle specifically includes following steps：Pass through the voltage on the reactor bus
Reactor when transformer summation current transformer is to normal operation is sampled, and 35 kilovolts of parallel connections are done when obtaining operation in real time
Formula air reactor active power, using described normal 35 kilovolts dry-type air-core reactor active power in parallel as initial reference
Amount.
3. the guard method of 35 kilovolts as claimed in claim 2 dry-type air-core reactors in parallel, it is characterised in that described
Step 2 specifically includes following steps：According to protection determination methods, described 35 kilovolts dry-type air-core reactors in parallel are judged
The absolute value of active power and the comparative result of predetermined threshold value.
4. the guard method of 35 kilovolts as claimed in claim 3 dry-type air-core reactors in parallel, it is characterised in that described
The absolute value of 35 kilovolts of dry-type air-core reactor active power in parallel is more than or equal to twice of initial reference amount, then occurs
Turn-to-turn short circuit, exports switch of the control signal to the reactor, and trigger switch action starts the guard method, cut
Except the reactor of the generation turn-to-turn short circuit.
5. the guard method of 35 kilovolts as claimed in claim 3 dry-type air-core reactors in parallel, it is characterised in that described
The absolute value differed between Current Voltage phase angle is less than initial reference amount, then turn-to-turn short circuit does not occur, does not start the protection
Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358889.4A CN107276031A (en) | 2017-05-19 | 2017-05-19 | The guard method of 35 kilovolts of dry-type air-core reactors in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358889.4A CN107276031A (en) | 2017-05-19 | 2017-05-19 | The guard method of 35 kilovolts of dry-type air-core reactors in parallel |
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| CN107276031A true CN107276031A (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710358889.4A Pending CN107276031A (en) | 2017-05-19 | 2017-05-19 | The guard method of 35 kilovolts of dry-type air-core reactors in parallel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282996A (en) * | 2000-09-15 | 2001-02-07 | 北京电力设备总厂 | Method and device for protecting dry hollow reactor |
| CN105699840A (en) * | 2016-03-09 | 2016-06-22 | 珠海蓝瑞盟电气有限公司 | Method for judging inter-turn short-circuit fault of reactor |
| CN106505520A (en) * | 2016-12-01 | 2017-03-15 | 特变电工南京智能电气有限公司 | One kind is taken out can reactor inter-turn protection method and device |
| CN106532641A (en) * | 2016-12-26 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | Protection method of parallel dry type air-core reactor based on current and voltage phase angles |
| CN106546869A (en) * | 2016-12-27 | 2017-03-29 | 哈尔滨理工大学 | A kind of hollow power reactor turn-to-turn insulation On-line Fault monitoring device |
-
2017
- 2017-05-19 CN CN201710358889.4A patent/CN107276031A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282996A (en) * | 2000-09-15 | 2001-02-07 | 北京电力设备总厂 | Method and device for protecting dry hollow reactor |
| CN105699840A (en) * | 2016-03-09 | 2016-06-22 | 珠海蓝瑞盟电气有限公司 | Method for judging inter-turn short-circuit fault of reactor |
| CN106505520A (en) * | 2016-12-01 | 2017-03-15 | 特变电工南京智能电气有限公司 | One kind is taken out can reactor inter-turn protection method and device |
| CN106532641A (en) * | 2016-12-26 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | Protection method of parallel dry type air-core reactor based on current and voltage phase angles |
| CN106546869A (en) * | 2016-12-27 | 2017-03-29 | 哈尔滨理工大学 | A kind of hollow power reactor turn-to-turn insulation On-line Fault monitoring device |
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Application publication date: 20171020 |
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