CN108110731A - A kind of pumping energy reactor is taken out can winding inter-turn zero sequence differential protecting method and device - Google Patents
A kind of pumping energy reactor is taken out can winding inter-turn zero sequence differential protecting method and device Download PDFInfo
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- CN108110731A CN108110731A CN201711429748.3A CN201711429748A CN108110731A CN 108110731 A CN108110731 A CN 108110731A CN 201711429748 A CN201711429748 A CN 201711429748A CN 108110731 A CN108110731 A CN 108110731A
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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
- H02H7/04—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 for transformers
- H02H7/045—Differential protection of transformers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The present invention provides a kind of pumping energy reactors to take out energy winding inter-turn zero sequence differential protecting method and device; it first obtains the zero-sequence current of highly resistance winding and takes out the zero-sequence current of energy winding; it is then determined that take out energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion; finally judge to take out whether energy winding inter-turn zero sequence differential protection acts; not only avoid the malfunction for taking out energy winding inter-turn protection, additionally it is possible to ensure the safe and stable operation of electric system.The present invention is only with highly resistance winding and the zero-sequence current of pumping energy winding; it is related to taking out energy reactor parameter to take out energy winding inter-turn zero sequence differential protection criterion; it is unrelated with parameters of electric power system; the reliability and sensitivity for taking out energy winding inter-turn zero sequence differential protection is substantially increased, taking out can winding inter-turn zero sequence differential protection quick action.
Description
Technical field
The present invention relates to technical field of relay protection, and in particular to it is differential that a kind of pumping energy reactor takes out energy winding inter-turn zero sequence
Guard method and device.
Background technology
With the rapid development of China's power industry, installed capacity is growing, and power grid scale is increasing.In superelevation
In pressure, extra-high voltage long-distance transmission line, if being typically chosen among circuit without big load along the line and building switchyard.
Seek reliable station power supply in this case, not only project cost is high, and difficulty is big, trans-regional, involves a wide range of knowledge, and pole again
It is dangerous.It is remote at those and again regional without reliable power supply power grid using that can be solved containing the pumping energy reactor for taking out energy winding
Switchyard station electrical problem.
Pumping energy reactor of the prior art is including highly resistance winding and takes out energy winding, and the interturn protection for taking out energy reactor is being taken out
Sensitivity deficiency during energy winding inter-turn failure takes out energy winding inter-turn failure in order to quickly cut off, and avoids taking out energy winding turns
Between fault progression damage it is entire take out can reactor, ensureing to take out can reactor safe operation, it is necessary to which configuration is taken out can winding inter-turn protection
It is supplemented.Current pumping energy winding inter-turn protection is using the zero-sequence current establishing protective criterion for taking out energy winding, when pumping can winding
Zero-sequence current when being more than default zero sequence current setting value, through deferred action, tripping is taken out can the line trackside open circuit of reactor institute
Device.Occur outside Chou Neng reactors area under ground short circuit fault condition, if the zero-sequence current for taking out energy winding is more than default zero sequence
Current setting and duration are more than to take out energy winding inter-turn guard time definite value, cause to take out energy winding inter-turn protection misoperation,
And then cause electric system can not safe and stable operation.
The content of the invention
In order to which above-mentioned energy winding inter-turn protection misoperation of taking out in the prior art is overcome to cause electric system can not safety and stability
The deficiency of operation, the present invention provide a kind of pumping energy reactor and take out energy winding inter-turn zero sequence differential protecting method and device, first obtain
The zero-sequence current of highly resistance winding and the zero-sequence current for taking out energy winding, then according to the zero-sequence current of highly resistance winding and energy winding of smoking
Zero-sequence current determines to take out energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion, finally according to pumping energy winding
Turn-to-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion judge whether pumping energy winding inter-turn zero sequence differential protection acts,
Not only avoid the malfunction for taking out energy winding inter-turn protection, additionally it is possible to ensure the safe and stable operation of electric system.
In order to realize foregoing invention purpose, the present invention adopts the following technical scheme that：
On the one hand, the present invention provides a kind of pumping energy reactor and takes out energy winding inter-turn zero sequence differential protecting method, and taking out can reactance
Device includes highly resistance winding and takes out energy winding, and method includes：
It obtains the zero-sequence current of highly resistance winding and takes out the zero-sequence current of energy winding；
It determines to take out the energy differential guarantor of winding inter-turn zero sequence according to the zero-sequence current of highly resistance winding and the zero-sequence current for taking out energy winding
Protect criterion and zero sequence excess current start-up criterion；
It can winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion judgement pumping energy winding inter-turn according to taking out
Whether zero sequence differential protection acts.
The zero-sequence current for obtaining highly resistance winding and the zero-sequence current for taking out energy winding, including：
In highly resistance winding and take out and on winding the first current transformer and the second current transformer can be installed respectively；
The zero-sequence current of highly resistance winding is gathered by the first current transformer and the second current transformer respectively and pumping can be around
The zero-sequence current of group.
The zero-sequence current for obtaining highly resistance winding and the zero-sequence current for taking out energy winding, including：
It gathers the three-phase current of highly resistance winding and takes out the three-phase current of energy winding；
The zero-sequence current of highly resistance winding is determined according to the three-phase current of the three-phase current of highly resistance winding and pumping energy winding respectively
With the zero-sequence current for taking out energy winding.
The zero sequence excess current start-up criterion includes highly sensitive zero sequence excess current start-up criterion and muting sensitivity zero sequence mistake
Current start criterion.
The pumping energy winding inter-turn zero sequence differential protection criterion determines as the following formula：
Wherein,Represent the zero-sequence current of highly resistance winding,Represent the zero-sequence current of pumping energy winding, I01Represent highly resistance around
The zero-sequence current amplitude of group, k2Represent that ratio formulates coefficient, kfZero-sequence current distribution when representing to escape area's external ground short trouble
Coefficient, andX0mRepresent the excitation impedance of pumping energy reactor, X02Represent the leakage reactance of pumping energy winding.
The high sensitivity zero sequence excess current start-up criterion determines as the following formula：
3I02＞ I0set
Wherein, I0setRepresent that zero sequence excess current starts setting valve.
The muting sensitivity zero sequence excess current start-up criterion determines as the following formula：
3I02＞ 2I0set。
It is described to be judged to take out energy winding according to pumping energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion
Whether turn-to-turn zero sequence differential protection acts, including：
1) if the zero-sequence current of highly resistance winding is unsatisfactory for taking out energy winding inter-turn zero sequence differential protection criterion, taking out can winding inter-turn
Zero sequence differential protection is failure to actuate；
2) if the zero-sequence current of highly resistance winding meets pumping energy winding inter-turn zero sequence differential protection criterion and high sensitivity simultaneously
Zero sequence excess current start-up criterion is taken out energy winding inter-turn zero sequence differential protection and is acted after default delay；
3) if the zero-sequence current of highly resistance winding meets pumping energy winding inter-turn zero sequence differential protection criterion and muting sensitivity simultaneously
Zero sequence excess current start-up criterion, taking out can the no-delay action of winding inter-turn zero sequence differential protection.
On the other hand, the present invention also provides a kind of pumping energy reactors to take out energy winding inter-turn zero sequence differential protection, described
Pumping energy reactor includes highly resistance winding and takes out energy winding, and described device includes：
Acquisition module, for obtaining the zero-sequence current of highly resistance winding and taking out the zero-sequence current of energy winding；
Determining module determines to take out energy winding turns for the zero-sequence current according to highly resistance winding and the zero-sequence current for taking out energy winding
Between zero sequence differential protection criterion and zero sequence excess current start-up criterion；
Judgment module, for being judged according to pumping energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion
Take out whether energy winding inter-turn zero sequence differential protection acts.
The acquisition module includes：
Installation unit, in highly resistance winding and taking out and can install the first current transformer respectively on winding and the second electric current is mutual
Sensor；
First collecting unit gathers highly resistance winding respectively for passing through the first current transformer and the second current transformer
Zero-sequence current and the zero-sequence current for taking out energy winding.
The acquisition module includes：
Second collecting unit, for gathering the three-phase current of highly resistance winding and taking out the three-phase current of energy winding；
First determination unit, for determining height according to the three-phase current of the three-phase current of highly resistance winding and pumping energy winding respectively
The zero-sequence current of anti-winding and the zero-sequence current for taking out energy winding.
The zero sequence excess current start-up criterion includes highly sensitive zero sequence excess current start-up criterion and muting sensitivity zero sequence mistake
Current start criterion.
The determining module includes the second determination unit, and second determination unit can winding turns for determining to take out as the following formula
Between zero sequence differential protection criterion：
Wherein,Represent the zero-sequence current of highly resistance winding,Represent the zero-sequence current of pumping energy winding, I01Represent highly resistance around
The zero-sequence current amplitude of group, k2Represent that ratio formulates coefficient, kfZero-sequence current distribution when representing to escape area's external ground short trouble
Coefficient, andX0mRepresent the excitation impedance of pumping energy reactor, X02Represent the leakage reactance of pumping energy winding.
The determining module includes the 3rd determination unit, and the 3rd determination unit is for definite high sensitivity zero as the following formula
Sequence overcurrent start-up criterion determines as the following formula：
3I02＞ I0set
Wherein, I0setRepresent that zero sequence excess current starts setting valve.
The determining module includes the 4th determination unit, and the 4th determination unit is used to determine muting sensitivity zero as the following formula
Sequence overcurrent start-up criterion：
3I02＞ 2I0set。
The judgment module is specifically used for：
If the zero-sequence current of highly resistance winding is unsatisfactory for taking out energy winding inter-turn zero sequence differential protection criterion, taking out can winding inter-turn zero
Sequence differential protection is failure to actuate；
It can winding inter-turn zero sequence differential protection criterion and high sensitivity zero if the zero-sequence current of highly resistance winding meets pumping simultaneously
Sequence overcurrent start-up criterion is taken out energy winding inter-turn zero sequence differential protection and is acted after default delay；
It can winding inter-turn zero sequence differential protection criterion and muting sensitivity zero if the zero-sequence current of highly resistance winding meets pumping simultaneously
Sequence overcurrent start-up criterion, taking out can the no-delay action of winding inter-turn zero sequence differential protection.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that：
Pumping energy reactor provided by the invention is taken out in energy winding inter-turn zero sequence differential protecting method, first obtains highly resistance winding
Zero-sequence current and the zero-sequence current for taking out energy winding, it is then true according to the zero-sequence current of the zero-sequence current of highly resistance winding and pumping energy winding
It is fixed to take out energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion, it is finally poor according to energy winding inter-turn zero sequence is taken out
Dynamic Protection criteria and zero sequence excess current start-up criterion judge to take out whether energy winding inter-turn zero sequence differential protection acts, not only avoid
Take out the malfunction of energy winding inter-turn protection, additionally it is possible to ensure the safe and stable operation of electric system；
Pumping energy reactor provided by the invention, which takes out energy winding inter-turn zero sequence differential protection, to be included acquisition module, determines mould
Block and judgment module, acquisition module therein are used to obtain the zero-sequence current of highly resistance winding and take out the zero-sequence current of energy winding,
In determining module be used for according to the zero-sequence current of highly resistance winding and take out can the zero-sequence current of winding determine to take out can winding inter-turn zero
Sequence differential protection criterion and zero sequence excess current start-up criterion, judgment module therein are used for differential according to energy winding inter-turn zero sequence is taken out
Protection criteria and zero sequence excess current start-up criterion judge whether pumping energy winding inter-turn zero sequence differential protection acts, and not only avoid pumping
The malfunction of energy winding inter-turn protection, additionally it is possible to ensure the safe and stable operation of electric system；
Only with highly resistance winding and the zero-sequence current of pumping energy winding in technical solution provided by the invention, taking out can winding inter-turn
Zero sequence differential protection criterion is related to taking out energy reactor parameter, unrelated with parameters of electric power system, and specifically taking out can winding inter-turn zero
Zero-sequence current distribution coefficient when escaping area's external ground short trouble in sequence differential protection criterion with take out can reactor excitation
Impedance is related, substantially increases the reliability and sensitivity for taking out energy winding inter-turn zero sequence differential protection, and taking out can winding inter-turn zero sequence
Differential protection quick action.
Description of the drawings
Fig. 1 is to take out energy reactor in the embodiment of the present invention to take out energy winding inter-turn zero sequence differential protecting method flow chart；
Fig. 2 is that energy reactor zero sequence equivalent circuit diagram is taken out in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
An embodiment of the present invention provides a kind of pumping energy reactors to take out energy winding inter-turn zero sequence differential protecting method, this method
For particular flow sheet as shown in Figure 1, the pumping energy reactor in the embodiment of the present invention includes highly resistance winding and takes out energy winding, taking out can reactance
Device zero sequence equivalent circuit diagram is as shown in Fig. 2, in Fig. 2, X0mRepresent the excitation impedance of pumping energy reactor, X01Represent highly resistance around
The leakage reactance of group, X02Represent the leakage reactance of pumping energy winding,Represent the zero-sequence current of highly resistance winding,Represent the zero sequence of pumping energy winding
Electric current, it is as follows that pumping energy reactor provided in an embodiment of the present invention takes out energy winding inter-turn zero sequence differential protecting method detailed process：
An embodiment of the present invention provides a kind of pumping energy reactors to take out energy winding inter-turn zero sequence differential protecting method, and taking out can reactance
Device includes highly resistance winding and takes out energy winding, and method includes：
S101：It obtains the zero-sequence current of highly resistance winding and takes out the zero-sequence current of energy winding；
S102：Determine that pumping can winding according to the zero-sequence current of the S101 highly resistance windings obtained and the zero-sequence current for taking out energy winding
Turn-to-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion；
S103：The pumping energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion determined according to S102 is sentenced
It is disconnected to take out whether energy winding inter-turn zero sequence differential protection acts.
In above-mentioned S101, the zero-sequence current for obtaining the zero-sequence current of highly resistance winding and taking out energy winding has following two approach：
Approach one：
1) on winding the first current transformer and the second current transformer can be installed respectively in highly resistance winding and pumping；
2) zero-sequence current of highly resistance winding is gathered by the first current transformer and the second current transformer respectively and takes out energy
The zero-sequence current of winding.
Approach two：
1) gather the three-phase current of highly resistance winding and take out the three-phase current of energy winding；
2) the zero sequence electricity of highly resistance winding is determined according to the three-phase current of the three-phase current of highly resistance winding and pumping energy winding respectively
Stream and the zero-sequence current for taking out energy winding.
In above-mentioned S102, zero sequence excess current start-up criterion includes highly sensitive zero sequence excess current start-up criterion and muting sensitivity
Zero sequence excess current start-up criterion.
Pumping energy winding inter-turn zero sequence differential protection criterion in above-mentioned S102 determines as the following formula：
Wherein,Represent the zero-sequence current of highly resistance winding,Represent the zero-sequence current of pumping energy winding, I01Represent highly resistance around
The zero-sequence current amplitude of group, k2Represent that ratio formulates coefficient, kfZero-sequence current distribution when representing to escape area's external ground short trouble
Coefficient, andX0mRepresent the excitation impedance of pumping energy reactor, X02Represent the leakage reactance of pumping energy winding.
High sensitivity zero sequence excess current start-up criterion therein determines as the following formula：
3I02＞ I0set
Wherein, I0setRepresent that zero sequence excess current starts setting valve.
Muting sensitivity zero sequence excess current start-up criterion therein determines as the following formula：
3I02＞ 2I0set。
It, can winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion judgement pumping according to taking out in above-mentioned S103
Whether energy winding inter-turn zero sequence differential protection acts, and is specifically divided into following 3 kinds of situations：
If 1) zero-sequence current of highly resistance winding is unsatisfactory for taking out energy winding inter-turn zero sequence differential protection criterion, show to take out energy winding
Generation external area error takes out energy winding inter-turn zero sequence differential protection and is failure to actuate；
2) if the zero-sequence current of highly resistance winding meets pumping energy winding inter-turn zero sequence differential protection criterion and high sensitivity simultaneously
Zero sequence excess current start-up criterion shows that taking out energy winding occurs troubles inside the sample space, and taking out energy winding inter-turn zero sequence differential protection needs warp pre-
If it is acted after delay；
3) if the zero-sequence current of highly resistance winding meets pumping energy winding inter-turn zero sequence differential protection criterion and muting sensitivity simultaneously
Zero sequence excess current start-up criterion shows that taking out energy winding occurs troubles inside the sample space, and it is no-delay dynamic to take out energy winding inter-turn zero sequence differential protection
Make.
Based on same inventive concept, the embodiment of the present invention provides a kind of pumping energy reactor and takes out the energy differential guarantor of winding inter-turn zero sequence
Protection unit, pumping energy reactor therein is including highly resistance winding and takes out energy winding, takes out energy reactor zero sequence equivalent circuit diagram such as
Shown in Fig. 2, in Fig. 2, X0mRepresent the excitation impedance of pumping energy reactor, X01Represent the leakage reactance of highly resistance winding, X02It represents to take out energy winding
Leakage reactance,Represent the zero-sequence current of highly resistance winding,Represent the zero-sequence current of pumping energy winding, pumping provided in an embodiment of the present invention
Energy winding inter-turn zero sequence differential protection includes acquisition module, determining module and judgment module, separately below to above-mentioned module
Function be described in detail：
Acquisition module therein, for obtaining the zero-sequence current of highly resistance winding and taking out the zero-sequence current of energy winding；
Determining module therein determines to take out energy for the zero-sequence current according to highly resistance winding and the zero-sequence current for taking out energy winding
Winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion；
Judgment module therein, for being sentenced according to pumping energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current startup
It is judged that taking out whether energy winding inter-turn zero sequence differential protection acts.
On the one hand, above-mentioned acquisition module can include installation unit and the first collecting unit, specific as follows：
Installation unit therein, in highly resistance winding and pumping the first current transformer and second can be installed respectively on winding
Current transformer；
First collecting unit therein gathers highly resistance respectively for passing through the first current transformer and the second current transformer
The zero-sequence current of winding and the zero-sequence current for taking out energy winding.
On the other hand, above-mentioned acquisition module can also include the second collecting unit and the first determination unit, specific as follows：
Second collecting unit therein, for gathering the three-phase current of highly resistance winding and taking out the three-phase current of energy winding；
First determination unit therein, for respectively according to the three-phase current of highly resistance winding and the three-phase current of pumping energy winding
It determines the zero-sequence current of highly resistance winding and takes out the zero-sequence current of energy winding.
The zero sequence excess current start-up criterion that above-mentioned determining module determines includes highly sensitive zero sequence excess current start-up criterion
With muting sensitivity zero sequence excess current start-up criterion.
Above-mentioned determining module includes the second determination unit, and the second determination unit can winding inter-turn for determining to take out as the following formula
Zero sequence differential protection criterion：
Wherein,Represent the zero-sequence current of highly resistance winding,Represent the zero-sequence current of pumping energy winding, I01Represent highly resistance around
The zero-sequence current amplitude of group, k2Represent that ratio formulates coefficient, kfZero-sequence current distribution when representing to escape area's external ground short trouble
Coefficient, andX0mRepresent the excitation impedance of pumping energy reactor, X02Represent the leakage reactance of pumping energy winding.
Above-mentioned determining module further includes the 3rd determination unit, and the 3rd determination unit is for definite high sensitivity zero as the following formula
Sequence overcurrent start-up criterion determines as the following formula：
3I02＞ I0set
Wherein, I0setRepresent that zero sequence excess current starts setting valve.
Above-mentioned determining module further includes the 4th determination unit, and the 4th determination unit is used to determine muting sensitivity zero as the following formula
Sequence overcurrent start-up criterion：
3I02＞ 2I0set。
Above-mentioned judgment module is sentenced according to pumping energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion
Disconnected to take out whether energy winding inter-turn zero sequence differential protection acts, detailed process is as follows：
If 1) zero-sequence current of highly resistance winding is unsatisfactory for taking out energy winding inter-turn zero sequence differential protection criterion, show to take out energy winding
Generation external area error takes out energy winding inter-turn zero sequence differential protection and is failure to actuate；
2) if the zero-sequence current of highly resistance winding meets pumping energy winding inter-turn zero sequence differential protection criterion and high sensitivity simultaneously
Zero sequence excess current start-up criterion shows that taking out energy winding occurs troubles inside the sample space, and taking out energy winding inter-turn zero sequence differential protection needs warp pre-
If it is acted after delay；
3) if the zero-sequence current of highly resistance winding meets pumping energy winding inter-turn zero sequence differential protection criterion and muting sensitivity simultaneously
Zero sequence excess current start-up criterion shows that taking out energy winding occurs troubles inside the sample space, and it is no-delay dynamic to take out energy winding inter-turn zero sequence differential protection
Make.
For convenience of description, each several part of apparatus described above is divided into various modules with function or unit describes respectively.
Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware can be used in the application
Apply the form of example.Moreover, the computer for wherein including computer usable program code in one or more can be used in the application
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment still can to the present invention specific embodiment modify or
Equivalent substitution, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent substitution
Within bright claims.
Claims (16)
1. a kind of pumping energy reactor take out can winding inter-turn zero sequence differential protecting method, the pumping energy reactor include highly resistance winding and
Take out energy winding, it is characterised in that：The described method includes：
It obtains the zero-sequence current of highly resistance winding and takes out the zero-sequence current of energy winding；
Determine that taking out energy winding inter-turn zero sequence differential protection sentences according to the zero-sequence current of highly resistance winding and the zero-sequence current for taking out energy winding
According to zero sequence excess current start-up criterion；
It can winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion judgement pumping energy winding inter-turn zero sequence according to taking out
Whether differential protection acts.
2. pumping energy reactor according to claim 1 takes out energy winding inter-turn zero sequence differential protecting method, which is characterized in that institute
The zero-sequence current for obtaining highly resistance winding and the zero-sequence current for taking out energy winding are stated, including：
In highly resistance winding and take out and on winding the first current transformer and the second current transformer can be installed respectively；
The zero-sequence current of highly resistance winding is gathered by the first current transformer and the second current transformer respectively and smokes energy winding
Zero-sequence current.
3. pumping energy reactor according to claim 1 takes out energy winding inter-turn zero sequence differential protecting method, which is characterized in that institute
The zero-sequence current for obtaining highly resistance winding and the zero-sequence current for taking out energy winding are stated, including：
It gathers the three-phase current of highly resistance winding and takes out the three-phase current of energy winding；
The zero-sequence current and pumping of highly resistance winding are determined according to the three-phase current of the three-phase current of highly resistance winding and pumping energy winding respectively
The zero-sequence current of energy winding.
4. pumping energy reactor according to claim 1 takes out energy winding inter-turn zero sequence differential protecting method, which is characterized in that institute
Zero sequence excess current start-up criterion is stated including highly sensitive zero sequence excess current start-up criterion and the startup of muting sensitivity zero sequence excess current to sentence
According to.
5. pumping energy reactor according to claim 1 takes out energy winding inter-turn zero sequence differential protecting method, which is characterized in that institute
Pumping energy winding inter-turn zero sequence differential protection criterion is stated to determine as the following formula：
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Wherein,Represent the zero-sequence current of highly resistance winding,Represent the zero-sequence current of pumping energy winding, I01Represent the zero of highly resistance winding
Sequence current amplitude, k2Represent that ratio formulates coefficient, kfZero-sequence current distribution coefficient when representing to escape area's external ground short trouble,
AndX0mRepresent the excitation impedance of pumping energy reactor, X02Represent the leakage reactance of pumping energy winding.
6. pumping energy reactor according to claim 5 takes out energy winding inter-turn zero sequence differential protecting method, which is characterized in that institute
Highly sensitive zero sequence excess current start-up criterion is stated to determine as the following formula：
3I02＞ I0set
Wherein, I0setRepresent that zero sequence excess current starts setting valve.
7. pumping energy reactor according to claim 5 takes out energy winding inter-turn zero sequence differential protecting method, which is characterized in that institute
Muting sensitivity zero sequence excess current start-up criterion is stated to determine as the following formula：
3I02＞ 2I0set。
8. pumping energy reactor according to claim 4 takes out energy winding inter-turn zero sequence differential protecting method, which is characterized in that institute
It states and judges that pumping energy winding inter-turn zero sequence is poor according to pumping energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion
Whether dynamic protection acts, including：
If the zero-sequence current of highly resistance winding is unsatisfactory for taking out energy winding inter-turn zero sequence differential protection criterion, it is poor to take out energy winding inter-turn zero sequence
Dynamic protection is failure to actuate；
It can winding inter-turn zero sequence differential protection criterion and highly sensitive zero sequence mistake if the zero-sequence current of highly resistance winding meets pumping simultaneously
Current start criterion is taken out energy winding inter-turn zero sequence differential protection and is acted after default delay；
It can winding inter-turn zero sequence differential protection criterion and muting sensitivity zero sequence mistake if the zero-sequence current of highly resistance winding meets pumping simultaneously
Current start criterion, taking out can the no-delay action of winding inter-turn zero sequence differential protection.
9. a kind of pumping energy reactor take out can winding inter-turn zero sequence differential protection, the pumping energy reactor include highly resistance winding and
Take out energy winding, it is characterised in that：Described device includes：
Acquisition module, for obtaining the zero-sequence current of highly resistance winding and taking out the zero-sequence current of energy winding；
Determining module determines to take out energy winding inter-turn zero for the zero-sequence current according to highly resistance winding and the zero-sequence current for taking out energy winding
Sequence differential protection criterion and zero sequence excess current start-up criterion；
Judgment module, for judging to take out energy according to pumping energy winding inter-turn zero sequence differential protection criterion and zero sequence excess current start-up criterion
Whether winding inter-turn zero sequence differential protection acts.
10. pumping energy reactor according to claim 9 takes out energy winding inter-turn zero sequence differential protection, which is characterized in that
The acquisition module includes：
Installation unit, in highly resistance winding and pumping the first current transformer and the second Current Mutual Inductance can be installed respectively on winding
Device；
First collecting unit gathers the zero sequence of highly resistance winding respectively for passing through the first current transformer and the second current transformer
Electric current and the zero-sequence current for taking out energy winding.
11. pumping energy reactor according to claim 9 takes out energy winding inter-turn zero sequence differential protection, which is characterized in that
The acquisition module includes：
Second collecting unit, for gathering the three-phase current of highly resistance winding and taking out the three-phase current of energy winding；
First determination unit, for respectively according to the three-phase current of highly resistance winding and take out can winding three-phase current determine highly resistance around
The zero-sequence current of group and the zero-sequence current for taking out energy winding.
12. pumping energy reactor according to claim 9 takes out energy winding inter-turn zero sequence differential protection, which is characterized in that
The zero sequence excess current start-up criterion includes highly sensitive zero sequence excess current start-up criterion and muting sensitivity zero sequence excess current starts
Criterion.
13. pumping energy reactor according to claim 12 takes out energy winding inter-turn zero sequence differential protection, which is characterized in that
The determining module includes the second determination unit, and second determination unit is poor for determining to take out energy winding inter-turn zero sequence as the following formula
Dynamic Protection criteria：
<mrow>
<mo>|</mo>
<mn>3</mn>
<msub>
<mi>k</mi>
<mi>f</mi>
</msub>
<msub>
<mover>
<mi>I</mi>
<mo>&CenterDot;</mo>
</mover>
<mn>01</mn>
</msub>
<mo>+</mo>
<mn>3</mn>
<msub>
<mover>
<mi>I</mi>
<mo>&CenterDot;</mo>
</mover>
<mn>02</mn>
</msub>
<mo>|</mo>
<mo>></mo>
<msub>
<mi>k</mi>
<mn>2</mn>
</msub>
<msub>
<mi>k</mi>
<mi>f</mi>
</msub>
<mn>3</mn>
<msub>
<mi>I</mi>
<mn>01</mn>
</msub>
</mrow>
Wherein,Represent the zero-sequence current of highly resistance winding,Represent the zero-sequence current of pumping energy winding, I01Represent the zero of highly resistance winding
Sequence current amplitude, k2Represent that ratio formulates coefficient, kfZero-sequence current distribution coefficient when representing to escape area's external ground short trouble,
AndX0mRepresent the excitation impedance of pumping energy reactor, X02Represent the leakage reactance of pumping energy winding.
14. pumping energy reactor according to claim 13 takes out energy winding inter-turn zero sequence differential protection, which is characterized in that
The determining module includes the 3rd determination unit, and the 3rd determination unit is for definite highly sensitive zero sequence excess current as the following formula
Start-up criterion determines as the following formula：
3I02＞ I0set
Wherein, I0setRepresent that zero sequence excess current starts setting valve.
15. pumping energy reactor according to claim 5 takes out energy winding inter-turn zero sequence differential protection, which is characterized in that
The determining module includes the 4th determination unit, and the 4th determination unit is used to determine muting sensitivity zero sequence excess current as the following formula
Start-up criterion：
3I02＞ 2I0set。
16. pumping energy reactor according to claim 12 takes out energy winding inter-turn zero sequence differential protection, which is characterized in that
The judgment module is specifically used for：
If the zero-sequence current of highly resistance winding is unsatisfactory for taking out energy winding inter-turn zero sequence differential protection criterion, it is poor to take out energy winding inter-turn zero sequence
Dynamic protection is failure to actuate；
It can winding inter-turn zero sequence differential protection criterion and highly sensitive zero sequence mistake if the zero-sequence current of highly resistance winding meets pumping simultaneously
Current start criterion is taken out energy winding inter-turn zero sequence differential protection and is acted after default delay；
It can winding inter-turn zero sequence differential protection criterion and muting sensitivity zero sequence mistake if the zero-sequence current of highly resistance winding meets pumping simultaneously
Current start criterion, taking out can the no-delay action of winding inter-turn zero sequence differential protection.
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| CN108493903A (en) * | 2018-02-02 | 2018-09-04 | 中国电力科学研究院有限公司 | A kind of pumping energy reactor differential protecting method and device without voltage |
| CN108879606A (en) * | 2018-07-20 | 2018-11-23 | 南京国电南自电网自动化有限公司 | Taking out can winding inter-turn fault distinguishing method and turn-to-turn fault guard method and device |
| CN109038489A (en) * | 2018-07-19 | 2018-12-18 | 许继集团有限公司 | A kind of high-voltage shunt reactor turn-to-turn fault guard method |
| CN109103846A (en) * | 2018-09-28 | 2018-12-28 | 中国电力科学研究院有限公司 | It is a kind of based on than mutually and than width principle pumping energy reactor protection method and system |
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| CN108493903A (en) * | 2018-02-02 | 2018-09-04 | 中国电力科学研究院有限公司 | A kind of pumping energy reactor differential protecting method and device without voltage |
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