CN105977935A - Method for manually simulating zero-sequence directional overcurrent protection action range of grid protection device - Google Patents
Method for manually simulating zero-sequence directional overcurrent protection action range of grid protection device Download PDFInfo
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- CN105977935A CN105977935A CN201610507381.1A CN201610507381A CN105977935A CN 105977935 A CN105977935 A CN 105977935A CN 201610507381 A CN201610507381 A CN 201610507381A CN 105977935 A CN105977935 A CN 105977935A
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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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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Abstract
The invention discloses a method for determining a zero-sequence directional overcurrent protection action range. The method is used for a grid protection device, and comprises the steps of acquiring a directional sensitive angle phi of the grid protection device; and setting a theoretical action range of the grid protection device as phi is larger than -phi-90 DEG + 360 DEG.k and smaller than -phi+90 DEG + 360 DEG.k, wherein the grid protection device is a main transformer protection device and the zero-sequence direction thereof points a transformer, k=1, otherwise, k=0; during response debugging of the grid protection device, short-circuit zero-sequence current exceeds short-circuit zero-sequence voltage by -phi-90 DEG + 360 DEG.k - theta1, -phi-90 DEG + 360 DEG.k + theta2, -phi+90 DEG + 360 DEG.k + theta3 and -phi+90 DEG + 360 DEG.k + theta4; and when the four kinds of response of the grid protection device are accurate, the zero-sequence directional overcurrent protection action range of the grid protection device is: phi is larger than -phi-90 DEG + 360 DEG.k and smaller than -phi+90 DEG + 360 DEG.k, wherein the intervals of theta1, theta2, theta3 and theta4 are (0, 90 DEG). When a single-phase grounding fault is manually simulated and the sensitive angle is a zero-sequence directional sensitive angle, the method can accurately determine the zero-sequence directional overcurrent protection action range of the grid protection device.
Description
Technical field
Zero sequence direction current protection technology field of the present invention, particularly relates to one and determines that zero sequence direction is crossed stream and protected
The method protecting actuating range.
Background technology
When technician and senior technician's practical operation take an examination, often require that electric network protection is filled by use static test instrument
Putting, the actuating range of the ground connection zero sequence direction overcurrent protection of such as RCS-978 carries out manual simulation test.When
During main transformer (such as 220kV) single phase ground fault, short circuit phase voltage reduces and short circuit phase current
Increase, and short circuit phase place also can change, and short circuit zero-sequence current and short circuit residual voltage can be produced.
And the debugging specification book of electric network protection device is only introduced in the range of protection act, added fault phase electricity
Stream should enter from the phase polar end of high voltage side current transformer, nonpolar brings out, then seals in high-pressure side zero sequence electricity
The polar end of current transformer, brings out from nonpolar.The most clearly, when manually simulation singlephase earth fault,
When fineness angle is zero sequence direction fineness angle, how to determine the zero sequence direction overcurrent protection of electric network protection device
Actuating range.
Therefore, how the side of a kind of zero sequence direction overcurrent protection actuating range determining electric network protection device is provided
Method is the problem that those skilled in the art are presently required solution.
Summary of the invention
It is an object of the invention to provide a kind of method determining zero sequence direction overcurrent protection actuating range, it is possible to
Manually during simulation singlephase earth fault, when fineness angle is zero sequence direction fineness angle, accurately determine electric network protection
The actuating range of the zero sequence direction overcurrent protection of device.
For solving above-mentioned technical problem, the invention provides one and determine zero sequence direction overcurrent protection actuating range
Method, for electric network protection device, the method includes:
Obtain the direction fineness angle φ of described electric network protection device；
The theoretical actuating range of described electric network protection device is set to
-90 °+360 ° k ＜+90 ° of+360 ° of k of φ ＜-φ of-φ, wherein, when described electric network protection device is main transformer
When protection device and its zero sequence direction point to transformator, k=1, otherwise, k=0；
When described electric network protection device being carried out response debugging, make the short circuit zero in advance of short circuit zero-sequence current respectively
-90 °+360 ° k-θ of sequence voltage-φ1、-φ-90°+360°·k+θ2、-φ+90°+360°·k-θ3And
-φ+90°+360°·k+θ4, when four kinds of responses of described electric network protection device are all correct, the most described electrical network is protected
The zero sequence direction overcurrent protection actuating range of protection unit is-90 °+360 ° k ＜+90 ° of+360 ° of k of φ ＜-φ of-φ,
Wherein, θ1、θ2、θ3And θ4Range intervals be (0,90 °).
Preferably, described electric network protection device is main transformer protection device, and described main transformer protection dress
The direction fineness angle φ put is 75 °, and the most described theoretical actuating range is-165 ° of ＜ φ ＜ 15 °.
Preferably, described θ1、θ2、θ3And θ4It is 1 °.
Preferably, described when described electric network protection device being carried out response debugging, make short circuit zero sequence electricity respectively
Stream advanced short circuit-90 °+360 ° k-θ of residual voltage-φ1、-φ-90°+360°·k+θ2、
-φ+90°+360°·k-θ3And+90 °+360 ° k+ θ of-φ4, when four kinds of responses of described electric network protection device are equal
Time correct, the zero sequence direction overcurrent protection actuating range of the most described electric network protection device is
The process of-90 °+360 ° k ＜ φ+90 ° of+360 ° of k of ＜-φ of-φ particularly as follows:
Described main transformer protection device is carried out respectively the first response debugging, the second response debugging, the 3rd sound
Should debug and the 4th response debugging, wherein:
Described first response debugging includes:
State 1:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, and the abnormal display lamp on panel to be shown enters state after extinguishing
2；
Described state 2:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠-164 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t1S, wherein, t1Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the first response；
Described second response debugging includes:
State 3:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, enter after the abnormal display lamp on described display floater extinguishes
State 4；
Described state 4:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠-166 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t2S, wherein, t2Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the second response；
Described 3rd response debugging includes:
State 5:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, enter after the abnormal display lamp on described display floater extinguishes
State 6；
Described state 6:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠ 14 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t3S, wherein, t3Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the 3rd response；
Described 4th response debugging includes:
State 7:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, enter after the abnormal display lamp on described display floater extinguishes
State 8；
Described state 8:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠ 16 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t4S, wherein, t4Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the 4th response；
When described first response and described 3rd response are zero sequence direction and cross stream I section the first time limit action,
Mother output clamping voltage grows out of nothing, and tripping operation lamp is bright, and display device shows T01 element movement, action
Time is described action setting time；And, described second response and described 4th response are protection not
During action, the zero sequence direction overcurrent protection actuating range of described main transformer protection device is
-165 ° of ＜ φ ＜ 15 °.
Preferably, described action setting time is 1.2s.
Preferably, described t1=t2=t3=t4=8s.
Preferably, described main transformer protection device is RCS-978 main transformer protection device.
Preferably, when the zero sequence direction of described main transformer protection device points to transformator, described main transformer pressure
The direction fineness angle φ of device protection device is 255 °, and the most described theoretical actuating range is 15 ° of ＜ φ ＜ 195 °.
Preferably, described electric network protection device is supervoltage line protective device RCS-901 or super-high voltage
Line protection device RCS-902 or supervoltage line protective device RCS-931.
The invention provides a kind of method determining zero sequence direction overcurrent protection actuating range, for electric network protection
Device, the method first passes through the direction fineness angle φ of electric network protection device and determines the theory of electric network protection device
Actuating range, then determined by the theoretical actuating range of electric network protection device electric network protection device is being rung
When should debug short circuit zero-sequence current in advance short circuit residual voltage angle, when electric network protection device response the most just
Time really, so that it is determined that the zero sequence direction overcurrent protection actuating range of electric network protection device is theoretical action model
Enclose, it is seen then that the present invention can be when manually simulation singlephase earth fault, when fineness angle is that zero sequence direction is sensitive
During angle, accurately determine the actuating range of the zero sequence direction overcurrent protection of electric network protection device.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to prior art and enforcement
In example, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
Some embodiments of the present invention, for those of ordinary skill in the art, are not paying creative work
Under premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The process of a kind of method determining zero sequence direction overcurrent protection actuating range that Fig. 1 provides for the present invention
Flow chart；
The reason when zero sequence direction of a kind of main transformer protection device that Fig. 2 provides for the present invention points to transformator
Opinion actuating range schematic diagram；
During the zero sequence direction pointing system of a kind of main transformer protection device that Fig. 3 provides for the present invention theoretical
Actuating range schematic diagram；
A kind of static test instrument that Fig. 4 provides for the present invention and the connection diagram of RCS-978.
Detailed description of the invention
The core of the present invention is to provide a kind of method determining zero sequence direction overcurrent protection actuating range, it is possible to
Manually during simulation singlephase earth fault, when fineness angle is zero sequence direction fineness angle, accurately determine main transformer
The actuating range of the zero sequence direction overcurrent protection of protection device.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
Firstly the need of explanation, the present invention provides a kind of side determining zero sequence direction overcurrent protection actuating range
When method is applicable to 220kV main transformer zero sequence direction overcurrent protection or circuit single phase ground fault
RCS-901, RCS-902 pilot zero sequence direction relay, is of course also apply to the main transformer zero of other models
Sequence directional over-current protection, is simultaneously applicable to RCS-978 main transformer medium voltage side (110kV side) zero sequence side
To the test of overcurrent protection.
Refer to Fig. 1, Fig. 1 and a kind of determine zero sequence direction overcurrent protection actuating range for what the present invention provided
The flow chart of the process of method, the method includes:
Step S101: obtain the direction fineness angle φ of electric network protection device；
Step S102: the theoretical actuating range of electric network protection device is set to
-90 °+360 ° k ＜+90 ° of+360 ° of k of φ ＜-φ of-φ, wherein, when electric network protection device is main transformer protection
When device and its zero sequence direction point to transformator, k=1, otherwise, k=0；
It is understood that for electric network protection device, when electric network protection device is main transformer protection
When the zero sequence direction of device and main transformer protection device points to transformator, zero sequence fineness angle is 255 °, refers to
When system, zero sequence fineness angle is 75 °；Electric network protection device is (as RCS-901, RCS-902 indulge connection zero
Sequence direction protection) zero sequence fineness angle determined by line zero order parameter and adjust in device.As preferably,
Electric network protection device is main transformer protection device, and the direction fineness angle φ of main transformer protection device is
75 °, then theoretical actuating range is-165 ° of ＜ φ ＜ 15 °.
As preferably, when the zero sequence direction of main transformer protection device points to transformator, main transformer is protected
The direction fineness angle φ of protection unit is 255 °, then theoretical actuating range is 15 ° of ＜ φ ＜ 195 °.
It is understood that electric network protection device here can be main transformer protection device can also be super
High-voltage line protection device.The angle of the short-circuit zero-sequence current of static test instrument output short circuit residual voltage in advance
Direction fineness angle for electric network protection device.
When electric network protection device is main transformer protection device, if the zero sequence side of main transformer protection device
To pointing to transformator, then fineness angle φ=255 °, direction of main transformer protection device, now k=1, namely
The theoretical actuating range of main transformer protection device is 15 ° of ＜ φ ＜ 195 °, specifically, refer to Fig. 2, Fig. 2
For theory action model during the zero sequence direction sensing transformator of a kind of main transformer protection device of present invention offer
Enclose schematic diagram；If the zero sequence direction of main transformer protection device points to the external system being connected with transformator
Time, fineness angle φ=75 °, direction of main transformer protection device, now k=0, namely main transformer protection dress
The theoretical actuating range put is-165 ° of ＜ φ ＜ 15 °, and specifically, refer to Fig. 3, Fig. 3 provides for the present invention
The zero sequence direction pointing system of a kind of main transformer protection device time theory actuating range schematic diagram.
When electric network protection device is supervoltage line protective device, the direction spirit of supervoltage line protective device
The theoretical actuating range of φ=72 °, quick angle, now k=0, namely supervoltage line protective device is
-162 ° of ＜ φ ＜ 18 °.
Step S103: when electric network protection device carries out response debugging, makes short circuit zero-sequence current surpass respectively
Front short circuit-90 °+360 ° k-θ of residual voltage-φ1、-φ-90°+360°·k+θ2、-φ+90°+360°·k-θ3With
And+90 °+360 ° k+ θ of-φ4, when four kinds of responses of electric network protection device are all correct, then electric network protection device
Zero sequence direction overcurrent protection actuating range be-90 °+360 ° k ＜+90 ° of+360 ° of k of φ ＜-φ of-φ, wherein,
θ1、θ2、θ3And θ4Range intervals be (0,90 °).
Specifically, θ1、θ2、θ3And θ4Range intervals be (0,2 °).Certainly, θ1、θ2、θ3And θ4
Other numerical value between also can being 0 to 90 °, the present invention is not particularly limited at this.
As preferably, θ1、θ2、θ3And θ4It is 1 °.
As a example by zero sequence direction by main transformer protection device points to the external system being connected with transformator below
This programme is introduced:
Now fineness angle φ=75 °, direction of main transformer protection device, k=0, namely main transformer protection
The theoretical actuating range of device is-165 ° of ＜ φ ＜ 15 °.
Then when electric network protection device being carried out response debugging, make short circuit zero-sequence current short circuit zero sequence in advance respectively
Voltage-166 ° ,-164 °, 14 ° and 16 °.
Certainly, θ here1、θ2、θ3And θ4Can also be other numerical value, and the most not require homogeneous etc., example
As θ can be taken1=1 °, θ2=1.5 °, θ3=1.2 ° and θ4=1.6 °, the purpose of the present invention can be realized.
As preferably, when electric network protection device carries out response debugging, short circuit zero-sequence current is made to surpass respectively
Front short circuit-90 °+360 ° k-θ of residual voltage-φ1、-φ-90°+360°·k+θ2、-φ+90°+360°·k-θ3With
And+90 °+360 ° k+ θ of-φ4, when four kinds of responses of electric network protection device are all correct, then electric network protection device
The process that zero sequence direction overcurrent protection actuating range is-90 °+360 ° k ＜ φ+90 ° of+360 ° of k of ＜-φ of-φ tool
Body is:
" response " is entered from the main menu of the debugging software of static test instrument.Zero-sequence current I0With UA=3U0For
Reference direction, zero-sequence current action setting valve I0ZD=2A.
Main transformer protection device is carried out respectively the first response debugging, the second response debugging, the 3rd response tune
Examination and the 4th response debugging, wherein:
Simulation (I in theoretical actuating range0Delayed UAI.e. 3U0When 164 °)
First response debugging includes:
State 1:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, and the abnormal display lamp on panel to be shown enters state after extinguishing
2；
It is understood that in order to avoid high voltage side current transformer, high side voltage transformer, zero sequence electricity
Current transformer break alarm and affect the carrying out of debugging, preferably voltage during original state is arranged to here
The voltage identical with during normal condition, and the amplitude of electric current is set to 0.Each response debugging below is in like manner.
State 2:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠-164 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t1S, wherein, t1More than main transformer protection device
Action setting time；
Main transformer protection device carries out the first response；
It is understood that the first response here is particularly as follows: zero sequence direction crosses stream I section the first time limit action,
Mother output clamping voltage grows out of nothing, and tripping operation lamp is bright, display device shows (zero sequence direction crosses stream to T01
First time limit of I section) element movement, movement time is action setting time.
When the method simulation be the single-line to ground fault of 220kV main transformer time, mother outlet the most now
Pressing plate is specially the mother output clamping of 220kV.Each response debugging below is in like manner.
Simulation (I outside theoretical actuating range0Delayed UAI.e. 3U0When 166 °)
Second response debugging includes:
State 3:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, and the abnormal display lamp on panel to be shown enters state after extinguishing
4；
State 4:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠-166 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t2S, wherein, t2More than main transformer protection device
Action setting time；
Main transformer protection device carries out the second response；
It is understood that the second response here is particularly as follows: protection is failure to actuate.
It addition, state 3 and state 4 here are actually the state 1 with main transformer protection device and shape
State 2 correspondence, the relational terms of 3 and 4 here or the like be used merely to by an entity or operation with
Another entity or operating space separate, and not necessarily require or imply existence between these entities or operation
The relation of any this reality or order, following state 5 and state 6, state 7 and state 8 in like manner,
Do not repeat them here.
Simulation (I in theoretical actuating range0Advanced UAI.e. 3U0When 14 °)
3rd response debugging includes:
State 5:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, and the abnormal display lamp on panel to be shown enters state after extinguishing
6；
State 6:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠ 14 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t3S, wherein, t3More than main transformer protection device
Action setting time；
Main transformer protection device carries out the 3rd response；
It is understood that the 3rd response here is particularly as follows: zero sequence direction crosses stream I section the first time limit action,
Mother output clamping voltage grows out of nothing, and tripping operation lamp is bright, display device shows (zero sequence direction crosses stream to T01
First time limit of I section) element movement, movement time is action setting time.
Simulation (I outside theoretical actuating range0Advanced UAI.e. 3U0When 16 °)
4th response debugging includes:
State 7:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, and the abnormal display lamp on panel to be shown enters state after extinguishing
8；
State 8:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠ 16 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t4S, wherein, t4More than main transformer protection device
Action setting time；
Main transformer protection device carries out the 4th response；
It is understood that the 4th response here is particularly as follows: protection is failure to actuate.
Crossing stream I section the first time limit action when the first response and the 3rd response are zero sequence direction, mother exports
Pressing plate voltage grows out of nothing, and tripping operation lamp is bright, display device shows (zero sequence direction crosses stream I section first to T01
Time limit) element movement, movement time is action setting time；And, the second response and the 4th response are all
When being failure to actuate for protection, the zero sequence direction overcurrent protection actuating range of main transformer protection device is
-165 ° of ＜ φ ＜ 15 °.
As preferably, action setting time is 1.2s.
Specifically, action setting time here can be 1230ms, and certainly, action setting time also may be used
Thinking other numerical value, the present invention is not particularly limited at this.
As preferably, t1=t2=t3=t4=8s.
Certainly, t here1、t2、t3And t4Can also be other numerical value, as long as more than main transformer
The action setting time of protection device, and t here1、t2、t3And t4The most do not demand perfection portion's phase
Deng, the object of the invention can be realized.
As preferably, main transformer protection device is RCS-978 main transformer protection device.
Specifically, refer to a kind of static test instrument that Fig. 4, Fig. 4 provide for the present invention with RCS-978's
Connection diagram.
Here illustrate as a example by main transformer protection device is as RCS-978:
The IAH interface of static test instrument is connected with the 1ID1 interface of RCS-978；
The IBH interface of static test instrument is connected with the 1ID2 interface of RCS-978；
The ICH interface of static test instrument is connected with the 1ID3 interface of RCS-978；
The INH interface of static test instrument is connected with the 1ID16 interface of RCS-978；
The UAH interface of static test instrument is connected with the 1UD1 interface of RCS-978；
The UBH interface of static test instrument is connected with the 1UD2 interface of RCS-978；
The UCH interface of static test instrument is connected with the 1UD3 interface of RCS-978；
The UNH interface of static test instrument is connected with the 1UD4 interface of RCS-978；
Being shorted together by 1ID4,1ID15 interface of RCS-978,1UD4 and 1UD5 interface short circuit exists
Together.
As preferably, electric network protection device is supervoltage line protective device RCS-901 or super-high voltage
Line protection device RCS-902 or supervoltage line protective device RCS-931.
The invention provides a kind of method determining zero sequence direction overcurrent protection actuating range, for main transformer
Protection device, the method first passes through the direction fineness angle φ of main transformer protection device and determines that main transformer is protected
The theoretical actuating range of protection unit, then determined to master by the theoretical actuating range of main transformer protection device
Protection equipment for transformer carries out the angle of short circuit zero-sequence current short circuit residual voltage in advance during response debugging, works as master
When the response of protection equipment for transformer is all correct, so that it is determined that the zero sequence direction of main transformer protection device crosses stream
Protection act scope is theoretical actuating range, it is seen then that the present invention can manually simulate singlephase earth fault
Time, when fineness angle is zero sequence direction fineness angle, accurately determine the zero sequence direction mistake of main transformer protection device
The actuating range of stream protection.
It should be noted that in this manual, the relational terms of such as first and second or the like is only used
One entity or operation are separated with another entity or operating space, and not necessarily requires or imply
Relation or the order of any this reality is there is between these entities or operation.And, term " includes ",
" comprise " or its any other variant is intended to comprising of nonexcludability, so that include a series of wanting
Process, method, article or the equipment of element not only include those key elements, but also include being not expressly set out
Other key elements, or also include the key element intrinsic for this process, method, article or equipment.
In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that at bag
Include and the process of described key element, method, article or equipment there is also other identical element.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this
Invention.Multiple amendment to these embodiments will be apparent for those skilled in the art
, generic principles defined herein can without departing from the spirit or scope of the present invention,
Other embodiments realize.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and
It is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (9)
1. the method determining zero sequence direction overcurrent protection actuating range, for electric network protection device, its
Being characterised by, the method includes:
Obtain the direction fineness angle φ of described electric network protection device；
The theoretical actuating range of described electric network protection device is set to
-90 °+360 ° k ＜+90 ° of+360 ° of k of φ ＜-φ of-φ, wherein, when described electric network protection device is main transformer
When protection device and its zero sequence direction point to transformator, k=1, otherwise, k=0；
When described electric network protection device being carried out response debugging, make the short circuit zero in advance of short circuit zero-sequence current respectively
-90 °+360 ° k-θ of sequence voltage-φ1、-φ-90°+360°·k+θ2、-φ+90°+360°·k-θ3And
-φ+90°+360°·k+θ4, when four kinds of responses of described electric network protection device are all correct, the most described electrical network is protected
The zero sequence direction overcurrent protection actuating range of protection unit is-90 °+360 ° k ＜+90 ° of+360 ° of k of φ ＜-φ of-φ,
Wherein, θ1、θ2、θ3And θ4Range intervals be (0,90 °).
2. the method for claim 1, it is characterised in that described electric network protection device is main transformer pressure
Device protection device, and the direction fineness angle φ of described main transformer protection device is 75 °, the most described theory is moved
Make scope for-165 ° of ＜ φ ＜ 15 °.
3. method as claimed in claim 2, it is characterised in that described θ1、θ2、θ3And θ4It is 1 °.
4. method as claimed in claim 3, it is characterised in that described to described electric network protection device
When carrying out response debugging, make short circuit zero-sequence current short circuit-90 °+360 ° k-θ of residual voltage-φ in advance respectively1、
-φ-90°+360°·k+θ2、-φ+90°+360°·k-θ3And+90 °+360 ° k+ θ of-φ4, when described electrical network is protected
When four kinds of responses of protection unit are all correct, the zero sequence direction overcurrent protection action model of the most described electric network protection device
Enclose the process for-90 °+360 ° k ＜ φ+90 ° of+360 ° of k of ＜-φ of-φ particularly as follows:
Described main transformer protection device is carried out respectively the first response debugging, the second response debugging, the 3rd sound
Should debug and the 4th response debugging, wherein:
Described first response debugging includes:
State 1:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, and the abnormal display lamp on panel to be shown enters state after extinguishing
2；
Described state 2:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠-164 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t1S, wherein, t1Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the first response；
Described second response debugging includes:
State 3:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, enter after the abnormal display lamp on described display floater extinguishes
State 4；
Described state 4:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠-166 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t2S, wherein, t2Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the second response；
Described 3rd response debugging includes:
State 5:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, enter after the abnormal display lamp on described display floater extinguishes
State 6；
Described state 6:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠ 14 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t3S, wherein, t3Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the 3rd response；
Described 4th response debugging includes:
State 7:Ua=57 ∠ 0 ° V, Ub=57 ∠-120 ° V, Uc=57 ∠ 120 ° V；
Ia=0 ∠ 0 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: by key control, enter after the abnormal display lamp on described display floater extinguishes
State 8；
Described state 8:Ua=30 ∠ 0 ° V, Ub=0 ∠-120 ° V, Uc=0 ∠ 120 ° V；
Ia=2.1 ∠ 16 ° A, Ib=0 ∠-120 ° A, Ic=0 ∠ 120 ° A；
End mode is set to: time control is set to t4S, wherein, t4Fill more than described main transformer protection
The action setting time put；
Described main transformer protection device carries out the 4th response；
When described first response and described 3rd response are zero sequence direction and cross stream I section the first time limit action,
Mother output clamping voltage grows out of nothing, and tripping operation lamp is bright, and display device shows T01 element movement, action
Time is described action setting time；And, described second response and described 4th response are protection not
During action, the zero sequence direction overcurrent protection actuating range of described main transformer protection device is
-165 ° of ＜ φ ＜ 15 °.
5. method as claimed in claim 4, it is characterised in that described action setting time is 1.2s.
6. method as claimed in claim 5, it is characterised in that described t1=t2=t3=t4=8s.
7. the method as described in any one of claim 1-6, it is characterised in that described main transformer protection
Device is RCS-978 main transformer protection device.
8. the method for claim 1, it is characterised in that when described main transformer protection device
When zero sequence direction points to transformator, the direction fineness angle φ of described main transformer protection device is 255 °, then
Described theoretical actuating range is 15 ° of ＜ φ ＜ 195 °.
9. the method for claim 1, it is characterised in that described electric network protection device is supertension
Line protective devices RCS-901 or supervoltage line protective device RCS-902 or supertension line protection
Device RCS-931.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123163A (en) * | 2020-04-01 | 2020-05-08 | 广东电网有限责任公司佛山供电局 | Method for manually simulating and testing overcurrent protection action range of re-pressing locking direction |
| CN111736007A (en) * | 2020-05-27 | 2020-10-02 | 湖南省湘电试验研究院有限公司 | High-resistance grounding-oriented line zero-sequence direction overcurrent protection method, system and medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005038474A1 (en) * | 2003-10-22 | 2005-04-28 | Abb Oy | Method and apparatus for identifying intermittent earth fault |
| CN1858953A (en) * | 2006-06-02 | 2006-11-08 | 北京四方继保自动化股份有限公司 | Protective method for zero sequence power direction based on local zero sequence compensation |
| CN104749487A (en) * | 2015-03-20 | 2015-07-01 | 中国南方电网有限责任公司 | Protection device and loops thereof detection method under no-power-failure line condition |
-
2016
- 2016-06-28 CN CN201610507381.1A patent/CN105977935B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005038474A1 (en) * | 2003-10-22 | 2005-04-28 | Abb Oy | Method and apparatus for identifying intermittent earth fault |
| CN1858953A (en) * | 2006-06-02 | 2006-11-08 | 北京四方继保自动化股份有限公司 | Protective method for zero sequence power direction based on local zero sequence compensation |
| CN104749487A (en) * | 2015-03-20 | 2015-07-01 | 中国南方电网有限责任公司 | Protection device and loops thereof detection method under no-power-failure line condition |
Non-Patent Citations (1)
| Title |
|---|
| 赵森等: "基于罗氏线圈电流互感器的零序方向保护校验和判定", 《中国科技博览》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123163A (en) * | 2020-04-01 | 2020-05-08 | 广东电网有限责任公司佛山供电局 | Method for manually simulating and testing overcurrent protection action range of re-pressing locking direction |
| CN111736007A (en) * | 2020-05-27 | 2020-10-02 | 湖南省湘电试验研究院有限公司 | High-resistance grounding-oriented line zero-sequence direction overcurrent protection method, system and medium |
| CN111736007B (en) * | 2020-05-27 | 2022-10-11 | 湖南省湘电试验研究院有限公司 | High-resistance grounding-oriented line zero-sequence direction overcurrent protection method, system and medium |
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| CN105977935B (en) | 2018-10-09 |
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