CN102967799A  Comprehensive fault distance measuring method for electric power system  Google Patents
Comprehensive fault distance measuring method for electric power system Download PDFInfo
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 CN102967799A CN102967799A CN2012104966680A CN201210496668A CN102967799A CN 102967799 A CN102967799 A CN 102967799A CN 2012104966680 A CN2012104966680 A CN 2012104966680A CN 201210496668 A CN201210496668 A CN 201210496668A CN 102967799 A CN102967799 A CN 102967799A
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Abstract
Description
Technical field
The present invention relates to range finding, particularly relate to a kind of electric power system fault hybrid ranging method.
Background technology
Existing fault positioning method for transmission line comprises fault analytical method and travelling wave ranging method.
Fault analytical method divides oneend fault analytic approach and bothend fault analytical method.The oneend fault analytic approach adopts single ended voltage/current data to calculate fault impedance, and then obtains fault distance, and the method is subjected to the impact of the factors such as transition resistance, and distance accuracy is relatively poor.The bothend fault analytical method utilizes bothend voltage/current data to calculate fault distance, is subjected to the factor affecting such as transition resistance less than the oneend fault analytic approach, and distance accuracy is higher than the oneend fault analytic approach, but needs to gather the bothend electric data.
The travelling wave ranging method is the localization method of realizing according to theory of travelling wave.When transmission line of electricity breaks down, the trouble spot produces transient voltage and the current break signal is voltage traveling wave and current traveling wave signal, propagate along power circuit to circuit both sides electrical network with certain speed, the mistiming of utilizing the trouble spot travelling wave signal to arrive the circuit both sides can calculate fault distance.The travelling wave ranging method is divided into Single Ended Fault Location and bothend travelling wave ranging method.The mistiming that Single Ended Fault Location utilization row ripple is propagated between trouble spot and transformer station is realized fault localization; The mistiming that bothend travelling wave ranging method utilizes trouble spot row ripple to arrive the transmission line of electricity both sides is realized fault localization.Single Ended Fault Location and bothend travelling wave ranging method are subjected to the factor affecting such as system operation mode, transition resistance less, and distance accuracy is better than singleended impedance telemetry and bothend impedance method.But the range finding of singleended traveling wave method very easily is subjected to the interference of reflected traveling wave and refraction row ripple, often needing artificially to participate in fault judges, practicality is poor, and in Single Ended Fault Location and bothend travelling wave ranging method is too faint at the fault traveling wave signal or the fault traveling wave life period the is too short situation, row wave datum harvester does not collect travelling wave signal, causes finding range unsuccessfully.
Summary of the invention
Technical matters to be solved by this invention is the defective that remedies abovementioned prior art, and a kind of electric power system fault hybrid ranging method is provided.
Technical matters of the present invention is solved by the following technical programs.
This electric power system fault hybrid ranging method, the data collector that the data collector that is arranged by the transformer station of transmission line of electricity one side and the transformer station of transmission line of electricity opposite side arrange is finished fault localization jointly automatically.
The characteristics of this electric power system fault hybrid ranging method are:
When having the trouble spot in the transmission line of electricity, may further comprise the steps:
1) data collector that the data collector that is arranged by the transformer station of transmission line of electricity one side and the transformer station of transmission line of electricity opposite side arrange, gather respectively travelling wave signal, adopt bothend travelling wave ranging method to identify the moment that travelling wave signal arrives respectively the transformer station of the transformer station of transmission line of electricity one side and transmission line of electricity opposite side, with the distance between the transformer station that determines described trouble spot and described transmission line of electricity one side, its computing formula is as follows:
In the formula (1):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
L is the transmission line of electricity total length, i.e. distance between the N of transformer station of the M of transformer station of transmission line of electricity one side and transmission line of electricity opposite side;
V is the velocity of propagation of row ripple on transmission line of electricity;
t _{m}Arrive the moment of the M of transformer station of transmission line of electricity one side for the row ripple;
t _{n}Arrive the moment of the N of transformer station of transmission line of electricity opposite side for the row ripple;
2) data collector that the data collector that is arranged by the transformer station of transmission line of electricity one side and the transformer station of transmission line of electricity opposite side arrange, gather respectively transmission line of electricity both end voltage/current information, utilize oneend fault analytic approach and bothend fault analytical method to calculate the trouble spot distance.
3) comprehensively pass judgment on the range finding result of travelling wave ranging method and the range finding result of fault analytical method, realize the accurate location of transmission line malfunction.
Technical matters of the present invention is solved by following further technical scheme.
Described step 1) gather travelling wave signal, its mode comprises high speed acquisition voltage/current information, directly gathers travelling wave signal, adopts when directly gathering the travelling wave signal mode, and travelling wave signal can be from primary equipment ground wire or specialpurpose traveling wave sensor.
Described step 1) differentiating that travelling wave signal arrives the moment of transformer station, is to adopt mathematical method to differentiate the row ripple, and the voltage/current information of utilizing wavelet transformation mathematical method analysis row wave datum harvester to gather finally identifies the capable ripple due in of voltage/current.
Described step 1) differentiating that travelling wave signal arrives the moment of transformer station, is to adopt hardware circuit to differentiate the row ripple, and the voltage/current travelling wave signal by proprietary hardware circuit analysis row wave datum harvester gathers finally identifies the capable ripple due in of voltage/current.
Described step 1) range finding of bothend travelling wave ranging method adopt high precision to the time, described high precision to the time be GPS (Global Positioning System, initialism are GPS) to the time and dipper system to the time in a kind of.
Data collector and step 2 that the transformer station of transmission line of electricity one side described step 1) arranges) the data collector that arranges of the transformer station of transmission line of electricity one side, be same set of data collector.
Data collector and step 2 that the transformer station of transmission line of electricity opposite side described step 1) arranges) the data collector that arranges of the transformer station of transmission line of electricity opposite side, be same set of data collector.
Data collector and step 2 that the transformer station of transmission line of electricity one side described step 1) arranges) the data collector that arranges of the transformer station of transmission line of electricity one side, be not same set of data collector.
Data collector and step 2 that the transformer station of transmission line of electricity opposite side described step 1) arranges) the data collector that arranges of the transformer station of transmission line of electricity opposite side, be not same set of data collector.
Described step 2) oneend fault analytic approach comprises singleend earthed impedance method and singleended line to line fault impedance method, when trouble spot singlephase earthing or threephase ground, adopt impedance method singleend earthed to measure fault distance between the transformer station of trouble spot and transmission line of electricity one side, its computing formula is as follows:
In the formula (2):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
z _{1}Be transmission line of electricity unit length positive sequence impedance.
U _{Mf}Fault phase voltage phasor value for the M of transformer station of transmission line of electricity one side;
I _{Mf}Fault phase electric current phasor value for the M of transformer station of transmission line of electricity one side;
K is zero sequence current compensation factor;
3I _{0}The M of transformer station zerosequence current for transmission line of electricity one side;
When trouble spot line to line fault or line to line fault ground connection or threephase shortcircuit, adopt singleended line to line fault impedance method to measure distance between the transformer station of trouble spot and transmission line of electricity one side, its computing formula is as follows:
In the formula (3):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
z _{1}Be transmission line of electricity unit length positive sequence impedance;
U _{Mf1}Be the twophase shortcircuit fault of the M of transformer station of transmission line of electricity one side 1 voltage phasor value mutually;
U _{Mf2}Be the twophase shortcircuit fault of the M of transformer station of transmission line of electricity one side 2 voltage phasor value mutually;
I _{Mf1}Be the twophase shortcircuit fault of the M of transformer station of transmission line of electricity one side 1 electric current phasor value mutually;
I _{Mf2}Be the twophase shortcircuit fault of the M of transformer station of transmission line of electricity one side 2 electric current phasor value mutually.
Described step 2) bothend fault analytical method comprises power frequency positive sequence bothend distance measuring method and power frequency negative phasesequence bothend distance measuring method, adopts the computing formula of power frequency positive sequence bothend distance measuring method measurement transmission line malfunction distance as follows:
U _{m1}ch(γ _{1}L _{M})+I _{m1}Z _{c1}sh(γ _{1}L _{M})＝U _{n1}ch(γ _{1}(LL _{M}))+I _{n1}Z _{c1}sh(γ _{1}(LL _{M}))............(4)
In the formula (4):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
L is the transmission line of electricity total length;
Z _{C1}Be transmission line of electricity positive sequence wave impedance;
γ _{1}Be the positive sequence propagation constant;
U _{M1}The M of transformer station positive sequence voltage for transmission line of electricity one side;
U _{N1}The N of transformer station positive sequence voltage for the transmission line of electricity opposite side;
I _{M1}The M of transformer station forwardorder current for transmission line of electricity one side;
I _{N1}The N of transformer station forwardorder current for the transmission line of electricity opposite side.
Adopt the computing formula of power frequency negative phasesequence bothend distance measuring method measurement transmission line malfunction distance as follows:
U _{m2}ch(γ _{2}L _{M})+I _{m2}Z _{c2}sh(γ _{2}L _{M})＝U _{n2}ch(γ _{2}(LL _{M}))+I _{n2}Z _{c2}sh(γ _{2}(LL _{M}))............(5)
In the formula (5):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
L is the transmission line of electricity total length;
Z _{C2}Be transmission line of electricity negative phasesequence wave impedance;
γ _{2}Be the negative phasesequence propagation constant;
U _{M2}The M of transformer station negative sequence voltage for transmission line of electricity one side;
U _{N2}The N of transformer station negative sequence voltage for the transmission line of electricity opposite side;
I _{M2}The M of transformer station negativesequence current for transmission line of electricity one side;
I _{N2}The N of transformer station negativesequence current for the transmission line of electricity opposite side.
Utilize formula (4) or formula (5) can calculate distance between the transformer station of trouble spot and transmission line of electricity one side.
The range finding result of comprehensive judge travelling wave ranging method described step 3) and the range finding result of fault analytical method comprise:
If the range finding result of the range finding result of travelling wave ranging method and fault analytical method is all effective, then localization of fault adopts the range finding result of the travelling wave ranging method that the range finding result with fault analytical method approaches;
If the range finding result of travelling wave ranging method is effective, the range finding result of fault analytical method is invalid, and then localization of fault adopts the range finding result of travelling wave ranging method;
If it is invalid that the range finding result of travelling wave ranging method has, the range finding result of fault analytical method is effective, and then localization of fault adopts the range finding result of fault analytical method.
The range finding result of fault analytical method described step 3) is comprehensively to pass judgment on the range finding result of oneend fault analytic approach and the range finding result of bothend fault analytical method.
The range finding result of described comprehensive judge oneend fault analytic approach and the range finding result of bothend fault analytical method comprise:
If onesided electrical data is only arranged, then localization of fault adopts the range finding result of oneend fault analytic approach;
If the range finding result of oneend fault analytic approach is in the district, the range finding result of bothend fault analytical method is for outside the district, and then localization of fault adopts the range finding result of oneend fault analytic approach;
If the range finding result of oneend fault analytic approach is in the district, the range finding result of bothend fault analytical method is in the district, and then localization of fault adopts the range finding result of bothend fault analytical method;
If the range finding result of oneend fault analytic approach is for outside the district, the range finding result of bothend fault analytical method is for outside the district, and then localization of fault adopts the range finding result of bothend fault analytical method;
If the range finding result of oneend fault analytic approach is for outside the district, the range finding result of bothend fault analytical method is in the district, and then localization of fault adopts the range finding result of bothend fault analytical method.
The present invention's beneficial effect compared with prior art is:
The double advantage of getting oneend fault analytic approach, bothend fault analytical method and bothend travelling wave ranging method of the inventive method, good stability, reliability and precision are high, can reliably, accurately realize the transmission line malfunction location.Under bothend travelling wave ranging method is found range effective situation, adopt oneend fault analytic approach, bothend fault analytical method to filter out unique travelling wave ranging result, effectively to avoid the interference of reflected traveling wave and refraction row ripple; In the situation of bothend travelling wave ranging method travelling wave ranging failure, adopt oneend fault analytic approach, bothend fault analytical method to finish fault localization, significantly improved the reliability of measuring distance of transmission line fault location.
Description of drawings
Accompanying drawing is data collector and the correlated variables synoptic diagram of the specific embodiment of the invention.
Among the figure: F is failure point of power transmission line; L _{M}Be the distance of trouble spot apart from the M of transformer station, L is the transmission line of electricity total length, i.e. distance between the M of transformer station and the N of transformer station.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention will be described.
A kind of electric power system fault hybrid ranging method, be that the M of transformer station of transmission line of electricity both sides of 300km and the data collector that the N of transformer station arranges are finished fault localization jointly automatically by total length L as shown in drawings, the A phase earth fault of transmission line of electricity and the distance of the M of transformer station are assumed to be 50km.
This embodiment may further comprise the steps:
1) data collector that is arranged by transmission line of electricity both sides transformer station gathers travelling wave signal and identifies the travelling wave signal due in, gather the row ripple and comprise high speed acquisition voltage/current information, directly gather the travelling wave signal from primary equipment ground wire or specialpurpose traveling wave sensor, differentiate that travelling wave signal arrives the moment of transformer station, to adopt mathematical method to differentiate the row ripple, the voltage/current information of utilizing wavelet transformation mathematical method analysis row wave datum harvester to gather, finally identify the capable ripple due in of voltage/current, perhaps adopt hardware circuit to differentiate the row ripple, voltage/current travelling wave signal by proprietary hardware circuit analysis row wave datum harvester collection, finally identify the capable ripple due in of voltage/current, and adopt global position system GPS to the time or the dipper system high precision to the time, determine the distance between the transformer station of described trouble spot and described transmission line of electricity one side by bothend travelling wave ranging method, its computing formula is as follows:
In the formula (1):
L _{M}Be the distance between trouble spot and the M of transformer station;
L is transmission line of electricity total length 300km;
V is the velocity of propagation 298m/ μ s of row ripple on transmission line of electricity;
t _{m}Arrive the moment of the M of transformer station for the row ripple;
t _{n}Arrive the moment of the N of transformer station for the row ripple;
The range finding the possibility of result that adopts bothend travelling wave ranging method actual computation to go out has a plurality of, and one of them range finding result is: the distance between trouble spot and the M of transformer station is 50.5km, and the distance between trouble spot and the N of transformer station is 290.3km;
2) data collector that the data collector that is arranged by the transformer station of transmission line of electricity one side and the transformer station of transmission line of electricity opposite side arrange, gather respectively transmission line of electricity both end voltage/current information, utilize oneend fault analytic approach and bothend fault analytical method to calculate the trouble spot distance;
Adopt impedance method singleend earthed to measure fault distance between the transformer station of trouble spot and transmission line of electricity one side, its computing formula is as follows:
In the formula (2):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
z _{1}Be transmission line of electricity unit length positive sequence impedance.
U _{Mf}Fault phase voltage phasor value for the M of transformer station of transmission line of electricity one side;
I _{Mf}Fault phase electric current phasor value for the M of transformer station of transmission line of electricity one side;
K is zero sequence current compensation factor;
3I _{0}The M of transformer station zerosequence current for transmission line of electricity one side;
The range finding result who adopts impedance method actual computation singleend earthed to go out is: the distance between trouble spot and the M of transformer station is 45.3km;
The bothend fault analytical method comprises power frequency positive sequence bothend distance measuring method and power frequency negative phasesequence bothend distance measuring method, adopts the computing formula of power frequency positive sequence bothend distance measuring method measurement transmission line malfunction distance as follows:
U _{m1}ch(γ _{1}L _{M})+I _{m1}Z _{c1}sh(γ _{1}L _{M})＝U _{n1}ch(γ _{1}(LL _{M}))+I _{n1}Z _{c1}sh(γ _{1}(LL _{M}))............(4)
In the formula (4):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
L is the transmission line of electricity total length;
Z _{C1}Be transmission line of electricity positive sequence wave impedance;
γ _{1}Be the positive sequence propagation constant;
U _{M1}The M of transformer station positive sequence voltage for transmission line of electricity one side;
U _{N1}The N of transformer station positive sequence voltage for the transmission line of electricity opposite side;
I _{M1}The M of transformer station forwardorder current for transmission line of electricity one side;
I _{N1}The N of transformer station forwardorder current for the transmission line of electricity opposite side.
Adopt the computing formula of power frequency negative phasesequence bothend distance measuring method measurement transmission line malfunction distance as follows:
U _{m2}ch(γ _{2}L _{M})+I _{m2}Z _{c2}sh(γ _{2}L _{M})＝U _{n2}ch(γ _{2}(LL _{M}))+I _{n2}Z _{c2}sh(γ _{2}(LL _{M}))............(5)
In the formula (5):
L _{M}Be the distance between the M of transformer station of trouble spot and transmission line of electricity one side;
L is the transmission line of electricity total length;
Z _{C2}Be transmission line of electricity negative phasesequence wave impedance;
γ _{2}Be the negative phasesequence propagation constant;
U _{M2}The M of transformer station negative sequence voltage for transmission line of electricity one side;
U _{N2}The N of transformer station negative sequence voltage for the transmission line of electricity opposite side;
I _{M2}The M of transformer station negativesequence current for transmission line of electricity one side;
I _{N2}The N of transformer station negativesequence current for the transmission line of electricity opposite side;
Utilize formula (4) or formula (5) can calculate distance between the transformer station of trouble spot and transmission line of electricity one side, the range finding result who adopts bothend fault analytical method actual computation to go out is: 48.1km;
3) comprehensively pass judgment on the range finding result of travelling wave ranging method and the range finding result of fault analytical method, realize the accurate location of transmission line malfunction;
The comprehensive range finding result of travelling wave ranging method and the range finding result of fault analytical method of passing judgment on comprises:
If the range finding result of the range finding result of travelling wave ranging method and fault analytical method is all effective, then localization of fault adopts the range finding result of the travelling wave ranging method that the range finding result with fault analytical method approaches;
If the range finding result of travelling wave ranging method is effective, the range finding result of fault analytical method is invalid, and then localization of fault adopts the range finding result of travelling wave ranging method;
If it is invalid that the range finding result of travelling wave ranging method has, the range finding result of fault analytical method is effective, and then localization of fault adopts the range finding result of fault analytical method, comprehensively passes judgment on the range finding result of oneend fault analysis and the range finding result of bothend fault analytical method, comprising:
If onesided electrical data is only arranged, then localization of fault adopts the range finding result of oneend fault analytic approach;
If the range finding result of oneend fault analytic approach is in the district, the range finding result of bothend fault analytical method is for outside the district, and then localization of fault adopts the range finding result of oneend fault analytic approach;
If the range finding result of oneend fault analytic approach is in the district, the range finding result of bothend fault analytical method is in the district, and then localization of fault adopts the range finding result of bothend fault analytical method;
If the range finding result of oneend fault analytic approach is for outside the district, the range finding result of bothend fault analytical method is for outside the district, and then localization of fault adopts the range finding result of bothend fault analytical method;
If the range finding result of oneend fault analytic approach is for outside the district, the range finding result of bothend fault analytical method is in the district, and then localization of fault adopts the range finding result of bothend fault analytical method.
This embodiment contrasts such as following table 1 with the localization of fault result who adopts respectively single oneend fault analytic approach, bothend fault analytical method, bothend travelling wave ranging method, wherein explanation in the above of positioning result 1, positioning result 2～4th, other range finding result of three times contrast.
Table 1 (unit: km)
The localization of fault result contrast of table 1 shows, the specific embodiment of the present invention has fully been chosen the fault localization result of error minimum in oneend fault analytic approach, bothend fault analytical method, the bothend travelling wave ranging method, and distance accuracy and reliability obviously are better than adopting the fault localization of single method.
Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention; make without departing from the inventive concept of the premise such as dried fruit and be equal to alternative or obvious modification; and performance or purposes are identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of submitting to.
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Citations (8)
Publication number  Priority date  Publication date  Assignee  Title 

US4797805A (en) *  19851220  19890110  Asea Aktiebolag  Fault location in a power supply network 
JPH07109427B2 (en) *  19930330  19951122  株式会社近計システム  Power system accident aspect identification device 
CN101067641A (en) *  20070606  20071107  清华大学  Distributing capacitance current and transition resistance influence resisting line oneend fault ranging method 
CN102074937A (en) *  20101105  20110525  江西省电力科学研究院  Ranging method for adaptive transmission line fault of model 
CN102193050A (en) *  20110419  20110921  嘉兴电力局  Positioning system for fault of directcurrent transmission line 
CN201993432U (en) *  20101105  20110928  江西省电力科学研究院  Power transmission line singleend traveling wave fault distance measuring device based on traveling wave and power frequency amount principle 
CN102495336A (en) *  20111229  20120613  上海交通大学  Distributed singlephase earth fault ranging system and ranging method thereof 
CN202305731U (en) *  20111031  20120704  武汉中元华电科技股份有限公司  Device integrating travelling wave distance measuring and fault wave recording 

2012
 20121129 CN CN201210496668.0A patent/CN102967799B/en active IP Right Grant
Patent Citations (8)
Publication number  Priority date  Publication date  Assignee  Title 

US4797805A (en) *  19851220  19890110  Asea Aktiebolag  Fault location in a power supply network 
JPH07109427B2 (en) *  19930330  19951122  株式会社近計システム  Power system accident aspect identification device 
CN101067641A (en) *  20070606  20071107  清华大学  Distributing capacitance current and transition resistance influence resisting line oneend fault ranging method 
CN102074937A (en) *  20101105  20110525  江西省电力科学研究院  Ranging method for adaptive transmission line fault of model 
CN201993432U (en) *  20101105  20110928  江西省电力科学研究院  Power transmission line singleend traveling wave fault distance measuring device based on traveling wave and power frequency amount principle 
CN102193050A (en) *  20110419  20110921  嘉兴电力局  Positioning system for fault of directcurrent transmission line 
CN202305731U (en) *  20111031  20120704  武汉中元华电科技股份有限公司  Device integrating travelling wave distance measuring and fault wave recording 
CN102495336A (en) *  20111229  20120613  上海交通大学  Distributed singlephase earth fault ranging system and ranging method thereof 
NonPatent Citations (1)
Title 

李强等: "高压输电线路的故障测距方法", 《电力系统保护与控制》 * 
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Publication number  Priority date  Publication date  Assignee  Title 

CN103364693A (en) *  20130715  20131023  国家电网公司  Electric transmission line traveling wave fault distance measurement method based on regional data 
CN103364693B (en) *  20130715  20151104  国家电网公司  A kind of transmission line travelling wave fault distancefinding method based on area data 
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CN106124925A (en) *  20160612  20161116  广东电网有限责任公司惠州供电局  The distancefinding method of transmission line malfunction and device and locating verification method and system 
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