CN104269848A - Coordination control method of series compensation control protection and relay protection - Google Patents
Coordination control method of series compensation control protection and relay protection Download PDFInfo
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- CN104269848A CN104269848A CN201410552932.7A CN201410552932A CN104269848A CN 104269848 A CN104269848 A CN 104269848A CN 201410552932 A CN201410552932 A CN 201410552932A CN 104269848 A CN104269848 A CN 104269848A
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- 241000272814 Anser sp. Species 0.000 claims description 15
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- 238000005457 optimization Methods 0.000 abstract description 2
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Classifications
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- H02J13/0086—
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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
- H02H7/261—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 involving signal transmission between at least two stations
- H02H7/262—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 involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Emergency Protection Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a coordination control method of series compensation control protection and relay protection. The redundancy information transmitted by an intelligent substation at a high speed is fully utilized for series compensation control protection and the circuit protection algorithm function optimization. The coordination control method can well achieve the following purposes that the problem that due to high-resistance protection action or breaker failure protection action, a circuit switch of the substation is tripped and cannot quit from instation series compensation in a linkage mode is solved, the series compensation re-input time and the circuit protection action are matched in a cooperation mode, and the circuit protection action and a series compensation GAP trigger signal are combined to improve the protection action performance.
Description
Technical field
The present invention relates to a kind of control method for coordinating, be specifically related to a kind of control method for coordinating mending Control protection and relaying protection of going here and there.
Background technology
Transmission line is set up series compensation capacitance can compensated line inductance, plays and effectively shortens circuit electrical distance, improves circuit transmission power and improve the effect of power system safety and stability operation level.Meanwhile, after installing string mends device, obviously can reduce the new construction demand in transmission of electricity corridor, have economic and environmental benefit preferably.
String is mended device body complex structure except serial compensation capacitance, is also comprised the primary equipments such as metal oxide overvoltage limiter (MOV), spark gap (GAP), damping circuit.Thus the structure and fuction of its Control protection system is also comparatively complicated.Serial supplementary line break down and failure removal process in, string amended copy body Control protection system, except the defencive function completed serial compensation capacitance, MOV, also needs to carry out interaction with line protective devices.In this interactive process, there are some problems:
As under normal circumstances, when string mends station track road protection act, will link to go here and there and mend relevant phase, by the serial compensation capacitance bypass of route protection action phase.And Control protection system is mended when after our station reactor protection and failure protection action excision line-breaker for existing string, the string that can not link mends by-pass switch.Thus cause serial compensation capacitance to bear higher overvoltage in this case, and to the disadvantageous operation conditions of equipment; String mends the reclosing of heavy administration route protection, is coordinate by the set time at present, there will be string benefit in some cases and heavily throws in permanent fault, thus bring further short-circuit current rush to serial compensation capacitance; The Distance Protection Algorithm of serial supplementary line and the real-time running state of serial compensation capacitance have nothing to do; positive direction is existed to adjusting of the side standby distance protection of serial compensation capacitance all to calculate by the extreme case of serial compensation capacitance without MOV and GAP, thus have lost the protection range of standby distance I section.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of control method for coordinating mending Control protection and relaying protection of going here and there, making full use of the redundant information of intelligent substation high-speed transfer, carrying out string and mend Control protection and the optimization of route protection algorithm function.Following problem can be solved preferably: (1) due to high resistance protection act or breaker fail protection action, our station line switching tripping operation and cannot link exit station in string mend problem; (2) string mends the cooperation problem of heavily throwing moment and route protection action; (3) route protection action is mended GAP triggering signal be combined with string, improves Perfomance of protective relaying.
In order to realize foregoing invention object, the present invention takes following technical scheme:
The invention provides a kind of control method for coordinating mending Control protection and relaying protection of going here and there, said method comprising the steps of:
Step 1: set up string based on intelligent substation and mend Control protection and relay protection information transmission network;
Step 2: carry out reactor protection and breaker protection and mend the cooperation of Control protection with string respectively;
Step 3: carry out heavily throwing time and route protection cooperation in string benefit Control protection;
Step 4: carry out setting range and string in route protection and mend the cooperation of Control protection.
In described step 1, intelligent substation presses IEC-61850 stipulations with networking mode collection and transmission of information, and information transmission network comprises process layer, wall and station level.
Described process layer comprises the front-end acquisition device that merge cells, intelligent terminal and string mend Control protection; The electric quantity information collected is conveyed into process-level network by merge cells, intelligent terminal by quantity of state information transmission to process-level network and the trip signal transmitted in implementation layer network, the electric quantity information needed for front-end acquisition device gathers from process-level network and quantity of state information;
Wall comprises route protection, reactor protection, breaker protection and string and mends Control protection; Wall obtains electric quantity information and the quantity of state information of needs, simultaneously by control layer network that relevant action information sees off from process layer;
Station level comprise prudential sub-station and string mend control sub-station, both are all by station level Network Capture relevant action information and electric quantity information, and on deliver to relevant master station.
In described step 2, typical string is mended engineering system and is comprised bus in station, the first circuit breaker CB1, the first circuit breaker CB2, serial supplementary line, serial compensation capacitance C, spark gap GAP, goes here and there and mend by-pass switch CBC, the first high-voltage shunt reactor SR1, Current Transmit and voltage transformer pt; Serial supplementary line is connected with the interior bus in station by the first circuit breaker CB1 and the second circuit breaker CB2, the first high-voltage shunt reactor SR1 and voltage transformer pt in parallel with serial supplementary line respectively; Current Transmit and serial compensation capacitance C are serially connected with in serial supplementary line, and spark gap GAP and string mend the two ends that by-pass switch CBC is parallel to serial compensation capacitance C.
After serial supplementary line breaks down, serial supplementary line protection act signal interlock string mends by-pass switch CBC, by serial compensation capacitance C bypass; After the first circuit breaker CB1 and the second circuit breaker CB2 trips; when the relaying protection action of the first high-voltage shunt reactor SR1 and the failure protection action of the first circuit breaker CB1 or the second circuit breaker CB2 cause the first circuit breaker CB1 and the second circuit breaker CB2 all to trip; string is mended Control protection and is conjugated by the first circuit breaker CB1 and the second circuit breaker CB2 GOOSE separately the state that information judges the first circuit breaker CB1 and the second circuit breaker CB2; once detect that the first circuit breaker CB1 and the second circuit breaker CB2 is tripping state, then send out locking string simultaneously and mend order.
When the action situation of the first circuit breaker CB1 and the second circuit breaker CB2 is differentiated, first conjugate information to the GOOSE of the first circuit breaker CB1 and the second circuit breaker CB2 to screen, if the GOOSE of the first circuit breaker CB1 and the second circuit breaker CB2 conjugates information all become a point position from co-bit, then pass through serial supplementary line electric current and current ration I
set1compare, if serial supplementary line electric current is less than current setting value I
set1, then showing that string mends Control protection place serial supplementary line dead electricity, if confirming that string mends by-pass switch CBC is further co-bit, without the need to operating further, if it is a point position that string mends by-pass switch CBC, sending the order that closed string mends by-pass switch CBC.
In described step 3, the GOOSE of Real-Time Monitoring first circuit breaker CB1 and the second circuit breaker CB2 conjugates information and serial supplementary line electric current, the reclosing state of comprehensive descision first circuit breaker CB1 and the second circuit breaker CB2, is detecting the first circuit breaker CB1 and the second circuit breaker CB2 is "on" position and load current is greater than current setting value I
set2time, confirm that serial supplementary line is charged, by string benefit by-pass switch CBC time delay, this time is greater than rear accelerating time of route protection, and delay time gets 40ms ~ 60ms separating brake, and serial compensation capacitance C puts into operation again.
In described step 4, for route protection, string is mended Control protection and is uploaded in information transmission network by spark gap GAP action message with GOOSE form, route protection is by gathering spark gap GAP action message, and the overall operation state of serial compensation capacitance C, spark gap GAP and string being mended to by-pass switch CBC makes differentiation;
(1) if spark gap GAP is triggered show that serial compensation capacitance C is bypassed, then route protection scope does not consider the impact of serial compensation capacitance C, adopts following formula to calculate the impedance definite value Z of distance I section
i, have:
Z
I＝k*Z
L
Wherein, Z
lfor protected circuit total length resistance value, k gets 0.7 ~ 0.8;
(2) if spark gap GAP is not triggered show that serial compensation capacitance C is not bypassed, then following formula is adopted to calculate the impedance definite value Z of distance I section
i, have:
Wherein, U
pfor serial compensation capacitance C protected level voltage, namely represent when serial compensation capacitance C both end voltage is higher than U
ptime, its MOV conducting, the voltage of serial compensation capacitance C is retained as U
p; I
cfor flowing through the electric current of serial compensation capacitance C.
Compared with prior art, beneficial effect of the present invention is:
The present invention for circuit be Series compensation lines; deterministic process makes full use of intelligent station redundant high-speed transmission of information; obtaining electrically and on the basis of switching value information of other monitoring point, full station, the self adaptation that the connection locking that can realize preferably mending string when high resistance protection and this side switch three of failure protection action are jumped, string are mended heavily is thrown and the dynamic conditioning of route protection standby distance range.Thus improve the overall performance of string benefit control system and the performance of serial supplementary line protection.
Accompanying drawing explanation
Fig. 1 is information transmission network schematic diagram in the embodiment of the present invention;
Fig. 2 is that in the embodiment of the present invention, typical case's string mends engineering system wiring schematic diagram;
Fig. 3 is that in the embodiment of the present invention, string mends by-pass switch CBC action logic flow chart;
Fig. 4 is that in the embodiment of the present invention, string benefit Control protection heavily throws temporal logic schematic flow sheet;
Fig. 5 is circuit guard space I section self-adaptive sites logical flow chart in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Along with the development of intelligent substation, the maturation of network transmission technology and the perfect of relevant stipulations in standing.The protection of intelligent substation has achieved the application of network information transmission means.The present invention makes full use of the characteristic that intelligent substation redundant high speed information transmits, and fully applies polymorphic type, and multiple spot information is to solve aforesaid Railway Project in string benefit Control protection system and route protection cooperation control.
The invention provides a kind of control method for coordinating mending Control protection and relaying protection of going here and there, said method comprising the steps of:
Step 1: set up string based on intelligent substation and mend Control protection and relay protection information transmission network;
Step 2: carry out reactor protection and breaker protection and mend the cooperation of Control protection with string respectively;
Step 3: carry out heavily throwing time and route protection cooperation in string benefit Control protection;
Step 4: carry out setting range and string in route protection and mend the cooperation of Control protection.
In described step 1, intelligent substation presses IEC-61850 stipulations with networking mode collection and transmission of information, and information transmission network comprises process layer, wall and station level, as Fig. 1.
Described process layer comprises the front-end acquisition device that merge cells, intelligent terminal and string mend Control protection; The electric quantity information collected is conveyed into process-level network by merge cells, intelligent terminal by quantity of state information transmission to process-level network and the trip signal transmitted in implementation layer network, the electric quantity information needed for front-end acquisition device gathers from process-level network and quantity of state information;
Wall comprises route protection, reactor protection, breaker protection and string and mends Control protection; Wall obtains electric quantity information and the quantity of state information of needs, simultaneously by control layer network that relevant action information sees off from process layer;
Station level comprise prudential sub-station and string mend control sub-station, both are all by station level Network Capture relevant action information and electric quantity information, and on deliver to relevant master station.
In described step 2, (as Fig. 2) typical string is mended engineering system and is comprised bus in station, the first circuit breaker CB1, the first circuit breaker CB2, serial supplementary line, serial compensation capacitance C, spark gap GAP, goes here and there and mend by-pass switch CBC, the first high-voltage shunt reactor SR1, Current Transmit and voltage transformer pt; Serial supplementary line is connected with the interior bus in station by the first circuit breaker CB1 and the second circuit breaker CB2, the first high-voltage shunt reactor SR1 and voltage transformer pt in parallel with serial supplementary line respectively; Current Transmit and serial compensation capacitance C are serially connected with in serial supplementary line, and spark gap GAP and string mend the two ends that by-pass switch CBC is parallel to serial compensation capacitance C.
As Fig. 3, after serial supplementary line breaks down, serial supplementary line protection act signal interlock string mends by-pass switch CBC, by serial compensation capacitance C bypass; After the first circuit breaker CB1 and the second circuit breaker CB2 trips; when the relaying protection action of the first high-voltage shunt reactor SR1 and the failure protection action of the first circuit breaker CB1 or the second circuit breaker CB2 cause the first circuit breaker CB1 and the second circuit breaker CB2 all to trip; string is mended Control protection and is conjugated by the first circuit breaker CB1 and the second circuit breaker CB2 GOOSE separately the state that information judges the first circuit breaker CB1 and the second circuit breaker CB2; once detect that the first circuit breaker CB1 and the second circuit breaker CB2 is tripping state, then send out locking string simultaneously and mend order.
When the action situation of the first circuit breaker CB1 and the second circuit breaker CB2 is differentiated, first conjugate information to the GOOSE of the first circuit breaker CB1 and the second circuit breaker CB2 to screen, if the GOOSE of the first circuit breaker CB1 and the second circuit breaker CB2 conjugates information all become a point position from co-bit, then pass through serial supplementary line electric current and current ration I
set1compare, if serial supplementary line electric current is less than current setting value I
set1, then showing that string mends Control protection place serial supplementary line dead electricity, if confirming that string mends by-pass switch CBC is further co-bit, without the need to operating further, if it is a point position that string mends by-pass switch CBC, sending the order that closed string mends by-pass switch CBC.
In described step 3, the GOOSE of (as Fig. 4) Real-Time Monitoring first circuit breaker CB1 and the second circuit breaker CB2 conjugates information and serial supplementary line electric current, the reclosing state of comprehensive descision first circuit breaker CB1 and the second circuit breaker CB2, is detecting the first circuit breaker CB1 and the second circuit breaker CB2 is "on" position and load current is greater than current setting value I
set2time, confirm that serial supplementary line is charged, by string benefit by-pass switch CBC time delay, this time is greater than rear accelerating time of route protection, and delay time gets 40ms ~ 60ms separating brake, and serial compensation capacitance C puts into operation again.
In described step 4, (as Fig. 5) is for route protection, string is mended Control protection and is uploaded in information transmission network by spark gap GAP action message with GOOSE form, route protection is by gathering spark gap GAP action message, and the overall operation state of serial compensation capacitance C, spark gap GAP and string being mended to by-pass switch CBC makes differentiation;
(1) if spark gap GAP is triggered show that serial compensation capacitance C is bypassed, then route protection scope does not consider the impact of serial compensation capacitance C, adopts following formula to calculate the impedance definite value Z of distance I section
i, have:
Z
I＝k*Z
L
Wherein, Z
lfor protected circuit total length resistance value, k gets 0.7 ~ 0.8;
(2) if spark gap GAP is not triggered show that serial compensation capacitance C is not bypassed, then following formula is adopted to calculate the impedance definite value Z of distance I section
i, have:
Wherein, U
pfor serial compensation capacitance C protected level voltage, namely represent when serial compensation capacitance C both end voltage is higher than U
ptime, its MOV conducting, the voltage of serial compensation capacitance C is retained as U
p; I
cfor flowing through the electric current of serial compensation capacitance C.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field still can modify to the specific embodiment of the present invention with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.
Claims (8)
1. go here and there the control method for coordinating mending Control protection and relaying protection, it is characterized in that: said method comprising the steps of:
Step 1: set up string based on intelligent substation and mend Control protection and relay protection information transmission network;
Step 2: carry out reactor protection and breaker protection and mend the cooperation of Control protection with string respectively;
Step 3: carry out heavily throwing time and route protection cooperation in string benefit Control protection;
Step 4: carry out setting range and string in route protection and mend the cooperation of Control protection.
2. string according to claim 1 mends the control method for coordinating of Control protection and relaying protection; it is characterized in that: in described step 1; intelligent substation presses IEC-61850 stipulations with networking mode collection and transmission of information, and information transmission network comprises process layer, wall and station level.
3. string according to claim 2 mends the control method for coordinating of Control protection and relaying protection, it is characterized in that: described process layer comprises the front-end acquisition device that merge cells, intelligent terminal and string mend Control protection; The electric quantity information collected is conveyed into process-level network by merge cells, intelligent terminal by quantity of state information transmission to process-level network and the trip signal transmitted in implementation layer network, the electric quantity information needed for front-end acquisition device gathers from process-level network and quantity of state information;
Wall comprises route protection, reactor protection, breaker protection and string and mends Control protection; Wall obtains electric quantity information and the quantity of state information of needs, simultaneously by control layer network that relevant action information sees off from process layer;
Station level comprise prudential sub-station and string mend control sub-station, both are all by station level Network Capture relevant action information and electric quantity information, and on deliver to relevant master station.
4. string according to claim 1 mends the control method for coordinating of Control protection and relaying protection, it is characterized in that: in described step 2, typical string is mended engineering system and is comprised bus in station, the first circuit breaker CB1, the first circuit breaker CB2, serial supplementary line, serial compensation capacitance C, spark gap GAP, goes here and there and mend by-pass switch CBC, the first high-voltage shunt reactor SR1, Current Transmit and voltage transformer pt; Serial supplementary line is connected with the interior bus in station by the first circuit breaker CB1 and the second circuit breaker CB2, the first high-voltage shunt reactor SR1 and voltage transformer pt in parallel with serial supplementary line respectively; Current Transmit and serial compensation capacitance C are serially connected with in serial supplementary line, and spark gap GAP and string mend the two ends that by-pass switch CBC is parallel to serial compensation capacitance C.
5. string according to claim 4 mends the control method for coordinating of Control protection and relaying protection, it is characterized in that: after serial supplementary line breaks down, and serial supplementary line protection act signal interlock string mends by-pass switch CBC, by serial compensation capacitance C bypass; After the first circuit breaker CB1 and the second circuit breaker CB2 trips; when the relaying protection action of the first high-voltage shunt reactor SR1 and the failure protection action of the first circuit breaker CB1 or the second circuit breaker CB2 cause the first circuit breaker CB1 and the second circuit breaker CB2 all to trip; string is mended Control protection and is conjugated by the first circuit breaker CB1 and the second circuit breaker CB2 GOOSE separately the state that information judges the first circuit breaker CB1 and the second circuit breaker CB2; once detect that the first circuit breaker CB1 and the second circuit breaker CB2 is tripping state, then send out locking string simultaneously and mend order.
6. string according to claim 5 mends the control method for coordinating of Control protection and relaying protection; it is characterized in that: when the action situation of the first circuit breaker CB1 and the second circuit breaker CB2 is differentiated; first conjugate information to the GOOSE of the first circuit breaker CB1 and the second circuit breaker CB2 to screen; if the GOOSE of the first circuit breaker CB1 and the second circuit breaker CB2 conjugates information all become a point position from co-bit, then pass through serial supplementary line electric current and current ration I
set1compare, if serial supplementary line electric current is less than current setting value I
set1, then showing that string mends Control protection place serial supplementary line dead electricity, if confirming that string mends by-pass switch CBC is further co-bit, without the need to operating further, if it is a point position that string mends by-pass switch CBC, sending the order that closed string mends by-pass switch CBC.
7. string according to claim 1 mends the control method for coordinating of Control protection and relaying protection; it is characterized in that: in described step 3; the GOOSE of Real-Time Monitoring first circuit breaker CB1 and the second circuit breaker CB2 conjugates information and serial supplementary line electric current; the reclosing state of comprehensive descision first circuit breaker CB1 and the second circuit breaker CB2, is detecting the first circuit breaker CB1 and the second circuit breaker CB2 is "on" position and load current is greater than current setting value I
set2time, confirm that serial supplementary line is charged, by string benefit by-pass switch CBC time delay, this time is greater than rear accelerating time of route protection, and delay time gets 40ms ~ 60ms separating brake, and serial compensation capacitance C puts into operation again.
8. string according to claim 1 mends the control method for coordinating of Control protection and relaying protection, it is characterized in that: in described step 4, for route protection, string is mended Control protection and is uploaded in information transmission network by spark gap GAP action message with GOOSE form, route protection is by gathering spark gap GAP action message, and the overall operation state of serial compensation capacitance C, spark gap GAP and string being mended to by-pass switch CBC makes differentiation;
(1) if spark gap GAP is triggered show that serial compensation capacitance C is bypassed, then route protection scope does not consider the impact of serial compensation capacitance C, adopts following formula to calculate the impedance definite value Z of distance I section
i, have:
Z
I＝k*Z
L
Wherein, Z
lfor protected circuit total length resistance value, k gets 0.7 ~ 0.8;
(2) if spark gap GAP is not triggered show that serial compensation capacitance C is not bypassed, then following formula is adopted to calculate the impedance definite value Z of distance I section
i, have:
Wherein, U
pfor serial compensation capacitance C protected level voltage, namely represent when serial compensation capacitance C both end voltage is higher than U
ptime, its MOV conducting, the voltage of serial compensation capacitance C is retained as U
p; I
cfor flowing through the electric current of serial compensation capacitance C.
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| CN201410552932.7A CN104269848B (en) | 2014-10-17 | 2014-10-17 | A kind of string mends the control method for coordinating controlling protection with relay protection |
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| CN201410552932.7A CN104269848B (en) | 2014-10-17 | 2014-10-17 | A kind of string mends the control method for coordinating controlling protection with relay protection |
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| CN104269848B CN104269848B (en) | 2016-07-06 |
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Cited By (7)
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|---|---|---|---|---|
| CN105846445A (en) * | 2016-05-11 | 2016-08-10 | 国家电网公司 | Method and system for shortening serial compensation gap trigger integral time delay |
| CN106329715A (en) * | 2015-06-30 | 2017-01-11 | 中电普瑞科技有限公司 | Control device of 750kV digital controllable parallel reactor |
| CN108054737A (en) * | 2017-12-08 | 2018-05-18 | 国网青海省电力公司 | A kind of string mends asymmetric operation circuit standby zero-sequenceprotection definite value automatic adjusting method |
| CN108551209A (en) * | 2018-05-09 | 2018-09-18 | 北京国网普瑞特高压输电技术有限公司 | A kind of operation method of the status monitoring integrated platform based on IEC61850 agreements |
| CN108896100A (en) * | 2018-05-09 | 2018-11-27 | 北京国网普瑞特高压输电技术有限公司 | A kind of capacitor group status monitoring subsystem |
| CN109638790A (en) * | 2018-10-29 | 2019-04-16 | 全球能源互联网研究院有限公司 | A kind of the route protection control method and system of series compensation device |
| CN115684666A (en) * | 2022-10-28 | 2023-02-03 | 国家电网有限公司 | Relay protection equipment inspection system |
Citations (1)
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| CN106329715A (en) * | 2015-06-30 | 2017-01-11 | 中电普瑞科技有限公司 | Control device of 750kV digital controllable parallel reactor |
| CN105846445A (en) * | 2016-05-11 | 2016-08-10 | 国家电网公司 | Method and system for shortening serial compensation gap trigger integral time delay |
| CN108054737A (en) * | 2017-12-08 | 2018-05-18 | 国网青海省电力公司 | A kind of string mends asymmetric operation circuit standby zero-sequenceprotection definite value automatic adjusting method |
| CN108551209A (en) * | 2018-05-09 | 2018-09-18 | 北京国网普瑞特高压输电技术有限公司 | A kind of operation method of the status monitoring integrated platform based on IEC61850 agreements |
| CN108896100A (en) * | 2018-05-09 | 2018-11-27 | 北京国网普瑞特高压输电技术有限公司 | A kind of capacitor group status monitoring subsystem |
| CN109638790A (en) * | 2018-10-29 | 2019-04-16 | 全球能源互联网研究院有限公司 | A kind of the route protection control method and system of series compensation device |
| CN115684666A (en) * | 2022-10-28 | 2023-02-03 | 国家电网有限公司 | Relay protection equipment inspection system |
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