CN104953545B - A kind of air reactor turn-to-turn fault protective device and its method - Google Patents
A kind of air reactor turn-to-turn fault protective device and its method Download PDFInfo
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- CN104953545B CN104953545B CN201510295011.1A CN201510295011A CN104953545B CN 104953545 B CN104953545 B CN 104953545B CN 201510295011 A CN201510295011 A CN 201510295011A CN 104953545 B CN104953545 B CN 104953545B
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Abstract
The present invention relates to electric system Microcomputer Protection field, in particular to a kind of air reactor turn-to-turn fault protective device and its method.A kind of air reactor turn-to-turn fault protective device; it is characterized in that; including low pressure induction coil, balancing transformer, Microcomputer Protection device; the low pressure induction coil is mounted at reactor bottom potential; the balancing transformer is mounted below low pressure induction coil, and the Microcomputer Protection device is mounted on reactor end.For shunt reactor, connect current-limiting reactor, filter reactor, the most frequently used inductor turn-to-turn fault protective device such as capacitor current-limiting reactor and its method are adaptable, work well, are widely used.
Description
Technical field
The present invention relates to electric system Microcomputer Protection field, in particular to a kind of air reactor turn-to-turn fault protective device
And its method.
Background technique
Reactor is the indispensable power equipment of electric system, is widely used in reactive power compensator, limitation impact electricity
Stream or fault current, compensated line capacity current.With the rapid development of China's power grid construction, the application of high pressure reactance is also more next
It is more universal.
Currently, high voltage reactor generally uses single-phase absolute construction, when high-capacity, is independently installed frequently with single-phase 2
Mode；In addition, for effectively reduce accident range, have explicits stipulation (such as State Grid Corporation of China " 18 power grids it is great instead
Accident measure ") it is distinctly claimed new construction air reactor and closed assembly need to should not be taken to place according to flatwise layout.Reactor event
Barrier mainly has: turn-to-turn short circuit, single-phase earthing.Turn-to-turn short circuit is most commonly seen Reactor Fault, since its fault current is to wear
More property electric current, longitudinal difference protection failure, domestic perfect safeguard measure special not yet, most reactors are not all set in addition
Protection is set, this is to safe and stable operation of power system and its unfavorable.If reactor breaks down, not using timely and effectively
Protection, reactor, which can reach fusing point in the short time, to be caused seriously to burn, or even is impacted to other power equipments.According to related
Statistics, 1999~2003, nationwide integrated power grid high voltage reactor protection accuracy was only 27.27%, and this several years, reactance
Device failure occurs again and again, and rises year by year.Currently, domestic that some achievements are achieved to the research of reactor interturn protection, it proposes
Based on end voltage change, changed power, flux change, the research achievement of temperature change.As a consequence of an irresistible cause, Hen Duoli
It is only in laboratory proofing stage by research, and the most reactors in scene and the protective device for being not provided with effect.
From the point of view of practical operation situation, domestic configured interturn protection device main bugbear is the determination to setting valve,
Usually there is malfunction, tripping, does not reach actual effect.
Reactor is required to configure special, effective interturn protection device in consideration of it, market has begun.So mesh
The a whole set of detection scheme of preceding turn-to-turn short circuit in the urgent need to address can find in time at failure initial stage, avoid accident further expansion.
Summary of the invention
The present invention provides a kind of air reactor turn-to-turn fault protective device and its methods, by having run electricity to scene
Anti- device adds protective device, and energy real-time monitoring protection reactor internal operation situation, apparatus structure is simple, and detection sensitivity is high,
Operation is simple and feasible.
Technical scheme is as follows:
The invention proposes a kind of air reactor turn-to-turn fault protective devices, which is characterized in that including the low pressure line of induction
Circle, balancing transformer, Microcomputer Protection device, the low pressure induction coil are mounted at reactor bottom potential, and the balance becomes
Depressor is mounted below low pressure induction coil, and the Microcomputer Protection device is mounted on reactor end.
The low pressure induction coil is three-phase induction coil, and the low pressure induction coil utilizes the leakage magnetic flux of air reactor
The number of ampere turns of measurement air reactor and its variation, air reactor guard method induction coil use two kinds of wiring sides indirectly
Formula can protect different types of reactor, as both-end star-star connection current protection is suitble to filter reactor protection, open delta
Voltage method is suitble to protect large-scale shunt reactor；The balancing transformer is used to eliminate the foozle and peace of three-phase reactor
Fill error；For judging whether turn-to-turn fault occurs for the microcomputer protecting device.
The air reactor turn-to-turn fault guard method, which is characterized in that comprise the steps of:
Step 1: the judgement of air reactor turn-to-turn fault installs induction coil on air reactor, utilizes induction coil
The voltage of induction or the uneven situation of electric current, accurate judgement turn-to-turn fault and its development process；Calculate induction coil induced electricity
Pressure eliminates the foozle and installation error of three-phase reactor using balancing transformer, determines Reactor Fault situation；
Step 2: the interturn protection judgement of air reactor: using two groups of coils, and use 2 takes 2 methods to judge, increases protection
Reliability, the judgment method can take different judgement signals according to application difference, for conventional parallel reactor
Using power-frequency voltage or electric current, harmonic voltage or electric current are used for filter reactor；
Step 3: the faulty action preventing measure of air reactor guard method:
(1) cause false protection (if outside by the unbalanced fault that number of ampere turns change rate size prevents route from occurring
Failure number of ampere turns change rate can become very big, and inductor turn-to-turn fault number of ampere turns change rate is smaller)；
(2) prevent harmonic wave from leading to false protection by filtering out 3 multiple subharmonic；
(3) line attachment three-phase current accesses Microcomputer Protection from line current mutual inductor, auxiliary judgment split-phase reactor
Inductance variation, with this auxiliary judgment condition the most.
Beneficial effects of the present invention: for shunt reactor, current-limiting reactor of connecting, filter reactor, capacitor current limliting electricity
The most frequently used inductor turn-to-turn fault protective device such as anti-device and its method, it is adaptable, it works well, is widely used.
Detailed description of the invention
Fig. 1: hollow reactor interturn short circuit protects induction coil open delta wiring voltage protection mode；
Fig. 2: hollow reactor interturn short circuit protects induction coil both-end star-star connection current protection mode；
Fig. 3: hollow reactor interturn short circuit protects induction coil scheme of installation.
Specific embodiment
Air reactor turn-to-turn fault guard method described in the invention patent, has clear principle, and judgement is simple direct
The characteristics of, using the working condition of low pressure induction coil measurement high voltage reactor, that is, increasing to shielded reactor
One open circuit secondary coil (becoming transformer).Low pressure induction coil layout is at the ground potential of reactor bottom, measuring device
Simple and reliable, equipment manufacturing cost is low, and concrete operation step is as follows:
Step 1: using induction coil induction voltage or electric current uneven situation, accurate judgement turn-to-turn fault and its
Development process:
(1) voltage method utilizes symmetrically consistent, the induction coil induced electricity by protection three-phase reactor ampere-turn under normal circumstances
Three-phase symmetrical balance is pressed, open delta voltage is zero (or being a certain a reference value), after turn-to-turn fault occurs for certain phase reactor, this phase
The ampere-turn of its leakage magnetic flux of reactor varies widely, and imbalance occurs in the coil-induced voltage arrived of three-phase induction, is reflected in out
There have been larger unbalance voltages in the mouth triangle mode of connection, thus can accurate judgement turn-to-turn fault and its development process；
(2) current methods, three-phase reactor ampere-turn is symmetrically consistent under normal circumstances, senses induction coil by leakage magnetic flux
Induced voltage three-phase symmetrical balance, the three-phase circuit short circuit current three-phase symmetrical of star shortening contact mode is consistent, short circuit
Both ends output electric current be zero (or being a certain a reference value), after turn-to-turn fault occurs for certain phase reactor, its leakage field of this phase reactor
Logical ampere-turn varies widely, and imbalance occurs in the coil-induced voltage arrived of three-phase induction, is reflected in star shortening contact
Out-of-balance current will be exported at star short dot both ends in mode, turn-to-turn fault and its development process are judged with this.
Step 2: calculate induction coil induced voltage, using balancing transformer eliminate three-phase reactor foozle with
And installation error, determine Reactor Fault situation:
The number of ampere turns of induction coil passes through protected reactor mean turn, line packet diameter, line packet height, reactor and sense
Answer the centre distance of coil, the technical parameters such as induction coil diameter calculate gained, according to law of magnetic induction, induction coil induction
Voltage:
Induced voltage εA、εB、εC After balancing transformer, manufacture, the installation error of three-phase reactor itself are eliminated, so
Three-phase joins end to end to form open delta protection and both-end star-star connection current protection afterwards, passes through unbalance voltage (Uo=εA +εB +
εC) and electric current (Io=IA +IB +IC) determine Reactor Fault situation, it can effective district exceptionally portion and internal fault condition.
The air reactor guard method are as follows: use two groups of coils, use 2 takes 2 methods to judge, increases the reliable of protection
Property.Wherein the judgment method can take different judgement signals can for conventional parallel reactor according to application difference
Using power-frequency voltage or electric current, harmonic voltage or electric current can be used for filter reactor.
Wherein following faulty action preventing measure is taken in the air reactor guard method:
(1) cause false protection (if outside by the unbalanced fault that number of ampere turns change rate size prevents route from occurring
Failure number of ampere turns change rate can become very big, and inductor turn-to-turn fault number of ampere turns change rate is smaller)；
(2) prevent harmonic wave from leading to false protection by filtering out 3 multiple subharmonic；
(3) line attachment three-phase current accesses Microcomputer Protection from line current mutual inductor, auxiliary judgment split-phase reactor
Inductance variation, with this auxiliary judgment condition the most.
Claims (1)
1. a kind of air reactor turn-to-turn fault guard method, which is characterized in that comprise the steps of:
Step 1: the judgement of air reactor turn-to-turn fault is installed induction coil on air reactor, is incuded using induction coil
Voltage or electric current uneven situation, accurate judgement turn-to-turn fault and its development process；Calculate induction coil induced voltage, benefit
The foozle and installation error of three-phase reactor are eliminated with balancing transformer, determine Reactor Fault situation；
Step 2: the interturn protection judgement of air reactor: using two groups of coils, and use 2 takes 2 methods to judge, increase protection can
By property, the judgment method can take different judgement signals according to application difference, and conventional parallel reactor is used
Power-frequency voltage or electric current use harmonic voltage or electric current for filter reactor；
Step 3: the faulty action preventing measure of air reactor guard method:
(1) false protection is led to by the unbalanced fault that number of ampere turns change rate size prevents route from occurring, i.e., if external event
Barrier number of ampere turns change rate can become very big, and inductor turn-to-turn fault number of ampere turns change rate is smaller；
(2) prevent harmonic wave from leading to false protection by filtering out 3 multiple subharmonic；
(3) line attachment three-phase current accesses Microcomputer Protection device, the electricity of auxiliary judgment split-phase reactor from line current mutual inductor
Sense variation.
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| CN201510295011.1A CN104953545B (en) | 2015-06-02 | 2015-06-02 | A kind of air reactor turn-to-turn fault protective device and its method |
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| CN104953545B true CN104953545B (en) | 2019-07-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106093726A (en) * | 2016-06-27 | 2016-11-09 | 柳州电器科学研究所有限公司 | The method of inspection of 500kV shunt reactor protection device |
| CN108008242A (en) * | 2017-10-31 | 2018-05-08 | 中国电力科学研究院有限公司 | Dry reactor turn-to-turn fault protective device and recognition methods |
| CN108226699B (en) * | 2018-02-05 | 2023-07-18 | 国网山西省电力公司电力科学研究院 | Dry-type reactor turn-to-turn insulation live detection device and detection diagnosis method |
| CN109818333B (en) * | 2019-03-25 | 2020-05-08 | 北京国网富达科技发展有限责任公司 | Short circuit monitoring method and device for reactor |
| CN113675819B (en) * | 2020-05-14 | 2023-11-17 | 南京南瑞继保电气有限公司 | Inter-turn protection method and device of reactor and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162835A (en) * | 2007-08-31 | 2008-04-16 | 南京南瑞继保电气有限公司 | Magnetic controllable inductor turn-to-turn fault protection method based on differential protection |
| CN103278726A (en) * | 2013-04-25 | 2013-09-04 | 合容电器股份有限公司 | Device and method for monitoring and protecting series reactor |
| CN204651898U (en) * | 2015-06-02 | 2015-09-16 | 珠海蓝瑞盟电气有限公司 | A kind of air core reactor turn-to-turn fault protective device |
-
2015
- 2015-06-02 CN CN201510295011.1A patent/CN104953545B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162835A (en) * | 2007-08-31 | 2008-04-16 | 南京南瑞继保电气有限公司 | Magnetic controllable inductor turn-to-turn fault protection method based on differential protection |
| CN103278726A (en) * | 2013-04-25 | 2013-09-04 | 合容电器股份有限公司 | Device and method for monitoring and protecting series reactor |
| CN204651898U (en) * | 2015-06-02 | 2015-09-16 | 珠海蓝瑞盟电气有限公司 | A kind of air core reactor turn-to-turn fault protective device |
Non-Patent Citations (1)
| Title |
|---|
| 高压并联电抗器的匝间短路及保护;米娟芳等;《软件》;20131231;第126、137页 |
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