CN104123437B - Transmission line of electricity bridging discrimination method and system based on chart database and spatial information - Google Patents

Transmission line of electricity bridging discrimination method and system based on chart database and spatial information Download PDF

Info

Publication number
CN104123437B
CN104123437B CN201410307359.3A CN201410307359A CN104123437B CN 104123437 B CN104123437 B CN 104123437B CN 201410307359 A CN201410307359 A CN 201410307359A CN 104123437 B CN104123437 B CN 104123437B
Authority
CN
China
Prior art keywords
circuit
electricity
transmission line
spatial information
chart database
Prior art date
Application number
CN201410307359.3A
Other languages
Chinese (zh)
Other versions
CN104123437A (en
Inventor
武志刚
马义松
李蓉蓉
周保荣
金小明
邸鹏宇
Original Assignee
华南理工大学
南方电网科学研究院有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华南理工大学, 南方电网科学研究院有限责任公司 filed Critical 华南理工大学
Priority to CN201410307359.3A priority Critical patent/CN104123437B/en
Publication of CN104123437A publication Critical patent/CN104123437A/en
Application granted granted Critical
Publication of CN104123437B publication Critical patent/CN104123437B/en

Links

Abstract

A kind of transmission line of electricity bridging discrimination method and system based on chart database and spatial information provided by the present invention, the data storage on the basis of initial data physical topological structure, by the device map for setting up power network major network, electric power line pole tower is abstract for node, every section of transmission line of electricity between two shaft towers is abstract for side, the geographical coordinate attribute abstraction of shaft tower is the attribute of node, set up electric network data model, then corresponding graph-theoretical algorithm is utilized, it can try to achieve and judge whether circuit bridges with the presence or absence of line segment is intersected between circuit two-by-two, and further try to achieve circuit span and pick up the particular location of beginning shaft tower and the specific coordinate of circuit intersection point, it is convenient and simple.

Description

Transmission line of electricity bridging discrimination method and system based on chart database and spatial information

Technical field

The present invention relates to electric power network technical field, more particularly to it is a kind of defeated based on chart database and spatial information Electric line bridges discrimination method and system.

Background technology

With China's rapid development of economy, to the degree of dependence more and more higher of electric power, the development of electric power safety has been entered A brand-new stages of historical development is entered.Power network is relation national energy security and the important infrastructure of lifelines of the national economy And public utilities, it is that socio-economic development and national economy provide important energy safeguard, promotion economic society and can held to carry The weighty responsibility of supervention exhibition.Modern society is to the reliability requirement more and more higher of supply of electric power, and the status of power industry is than ever It is whenever all more important, electric power safety and efficiently be distinct issues.Electric power networks are most complicated in the world at present One of artificial network, operation of power networks process has very big uncertainty, and the probability that failure occurs is also very high, it is therefore necessary to right The construction of power transmission network is made rational planning for, and irrational wiring may bring various potential failure risks, and cross line fault is just It is one kind therein.

Bridging line may cause cross line fault in power system, often betide the phases such as same bar circuit, same geographical position In the extra-high voltage on adjacent line road, supergrid, cross line fault will directly affect zero-sequence current, phase to phase impedance, with vertical connection zero sequence side To measurement parameters such as elements, and then the protection of circuit is influenceed, cause misoperation, the refused action of route protection, so that break down, Power network power supply reliability is leveraged, jeopardizes power grid security, it is necessary to which it is studied.

Cross line fault is solved the problems, such as in addition to improving the safeguard measure of circuit, there is a need to the actual geographic wiring to circuit Investigated.Due to the potential larger failure risk of bridging line caused by the unreasonable wiring of transmission line of electricity, it is necessary to by adjusting The layout or emphasis of whole circuit strengthen the protection work of crossover region to tackle this risk, therefore find out the circuit and its tool of bridging The crossover region of body has important Research Significance.

The content of the invention

In view of above-mentioned the deficiencies in the prior art, chart database and spatial information are based on it is an object of the invention to provide one kind Transmission line of electricity bridging discrimination method and system, it is intended to find out the region for occurring bridging line in power transmission network.

Technical scheme is as follows:

A kind of transmission line of electricity bridging discrimination method based on chart database and spatial information, wherein, methods described includes:

A, the device map by setting up power network major network, by electric power line pole tower it is abstract be node, between two shaft towers Abstract every section of transmission line of electricity is side, and the geographical coordinate attribute abstraction of shaft tower is the attribute of node, sets up electric network data model;

B, using corresponding graph-theoretical algorithm, calculate with the presence or absence of line segment is intersected between circuit two-by-two, so as to judge that circuit is No bridging.

The transmission line of electricity bridging discrimination method based on chart database and spatial information, wherein, after the step B also Including:

C, when bridging line, obtain circuit span pick up the particular location of beginning shaft tower and the specific coordinate of circuit intersection point.

The transmission line of electricity bridging discrimination method based on chart database and spatial information, wherein, utilized in the step B Before corresponding graph-theoretical algorithm, the multigraph retrieved is deteriorated into simple graph.

The transmission line of electricity bridging discrimination method based on chart database and spatial information, wherein, it is corresponding in the step B Graph-theoretical algorithm is with Cypher scripts come abstract expression.

The transmission line of electricity bridging discrimination method based on chart database and spatial information, wherein, calculated in the step B Go out between circuit two-by-two and to specifically include with the presence or absence of intersecting line segment:

B1, first determine whether whether overlapped between two circuits, intersect if being then not present;

If B2, misaligned, determine whether whether two circuits are parallel, be not present and intersect if parallel;Otherwise two circuit Between exist intersect.

A kind of transmission line of electricity bridging identification system based on chart database and spatial information, wherein, the system includes:

Modeling unit is abstract for node, two by electric power line pole tower for the device map by setting up power network major network Abstract every section of transmission line of electricity between individual shaft tower is side, and the geographical coordinate attribute abstraction of shaft tower is the attribute of node, sets up power network number According to model;

Judging unit, for utilizing corresponding graph-theoretical algorithm, is calculated between circuit two-by-two with the presence or absence of intersecting line segment, so that Judge whether circuit bridges.

The transmission line of electricity bridging identification system based on chart database and spatial information, wherein, in addition to:

Computing unit, for when bridging line, obtaining particular location and circuit intersection point that circuit span picks up beginning shaft tower Specific coordinate.

The transmission line of electricity bridging identification system based on chart database and spatial information, wherein, in the judging unit Before corresponding graph-theoretical algorithm, the multigraph retrieved is deteriorated into simple graph.

The transmission line of electricity bridging identification system based on chart database and spatial information, wherein, in the judging unit Corresponding graph-theoretical algorithm is with Cypher scripts come abstract expression.

The transmission line of electricity bridging identification system based on chart database and spatial information, wherein, in the judging unit Calculate between circuit two-by-two and to specifically include with the presence or absence of intersecting line segment:

Subelement is overlapped, for judging whether overlapped between two circuits, is intersected if being then not present;

Parallel subelement, for judging whether two circuits are parallel, is not present if parallel and intersects;Otherwise deposited between two circuits Intersecting.

A kind of transmission line of electricity bridging discrimination method and system based on chart database and spatial information provided by the present invention, The data storage on the basis of initial data physical topological structure, by setting up the device map of power network major network, by power transmission line Abstract line pole tower is node, and abstract every section of transmission line of electricity between two shaft towers is side, and the geographical coordinate attribute abstraction of shaft tower is section The attribute of point, sets up electric network data model, then using corresponding graph-theoretical algorithm, can try to achieve between circuit two-by-two with the presence or absence of handing over Cross wires section judges whether circuit bridges, and further tries to achieve particular location and circuit intersection point that circuit span picks up beginning shaft tower Specific coordinate, it is convenient and simple.

Brief description of the drawings

Fig. 1 bridges the flow chart of discrimination method for the transmission line of electricity of the present invention based on chart database and spatial information.

Fig. 2 bridges the preferable implementation of discrimination method for the transmission line of electricity of the present invention based on chart database and spatial information The schematic diagram with the presence or absence of the algorithm principle intersected between circuit two-by-two is judged in example.

Fig. 3 bridges the preferable implementation of discrimination method for the transmission line of electricity of the present invention based on chart database and spatial information In example two-by-two between line segment four kinds of position relationships schematic diagram.

Fig. 4 is the bridging mark figure that the general emigrant's DC lines of extra-high voltage 800kV and super-pressure 500kV inkstones worship A-wire circuit.

Fig. 5 bridges the structural frames of identification system for the transmission line of electricity of the present invention based on chart database and spatial information Figure.

Embodiment

The present invention provides a kind of transmission line of electricity bridging discrimination method based on chart database and spatial information and system, to make The purpose of the present invention, technical scheme and effect are clearer, clear and definite, and the embodiment that develops simultaneously referring to the drawings is further to the present invention Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair It is bright.

Understand for convenience, the bridging of the transmission line of electricity based on chart database and spatial information of the present invention is introduced first The core concept of discrimination method is:Electric network data and respective two-dimensional spatial information are stored in graph structure, complexity is relied on Data are regarded as may be present multiple summits between the set of node and relation, two nodes, while there is direction and type, node and side tool There is variable attribute list.

Fig. 1 is referred to, Fig. 1 is the transmission line of electricity bridging discrimination method of the present invention based on chart database and spatial information Flow chart.As shown in figure 1, methods described includes:

S100, the device map by setting up power network major network, by electric power line pole tower it is abstract be node, between two shaft towers Every section of transmission line of electricity it is abstract be side, the geographical coordinate attribute abstraction of shaft tower is the attribute of node, sets up electric network data model;Tool For body, by the data storage on the basis of initial data physical topological structure, store data in graph structure, information is built Mould includes node, the 3 kinds of structural units in side and attribute, and multiple summits may be present between two nodes, while have direction and type, node and While having variable attribute list.

S200, using corresponding graph-theoretical algorithm, calculate with the presence or absence of line segment is intersected between circuit two-by-two, so as to judge circuit Whether bridge.In the present embodiment, the two-dimensional space information needed for bridging line evaluation algorithm can be calculated by geographic coordinate information Draw.It is improved and high performance Network Topology Algorithm using what chart database was provided for oneself, can try to achieve between circuit two-by-two whether Judge whether circuit bridges in the presence of line segment is intersected.

The perfect and high performance Network Topology Algorithm provided for oneself using chart database is to the quick traversal of data storage and place Reason, the algorithm can not only travel through all nodes and side with identical speed, and traversal speed is hardly by the data for constituting figure Amount influence.

As shown in Fig. 2 wherein, niAnd njThe segments of respectively two transmission lines of electricity.Ergodic algorithm is depended on from diagram data The segmentation two-dimensional space information of the transmission line of electricity retrieved in storehouse.Specifically include:

First determine whether whether overlapped between two circuits, intersect if being then not present;

If misaligned, determine whether whether two circuits are parallel, be not present and intersect if parallel;Otherwise between two circuits In the presence of intersection.

Further, as shown in Fig. 2 due to there is parallel erected on same tower in practical power systems, it is impossible to judged For bridging line, therefore multigraph (multigraph, point-to-point transmission that will retrieve is needed before specific bridging evaluation algorithm is implemented There may be multiple summits) simple graph (simple graph, point-to-point transmission only has a line) is deteriorated to, in any chart database There is ready-made algorithm, do not repeat.

The core of the present invention is the Intersection for judging twolink, is likely encountered four kinds of situations as shown in Figure 3.In Fig. 3 A kind of situation overlaps for two line segments, is evaded by the way that multigraph is degenerated into simple graph.If circuit 1 i-th is segmented two Extreme coordinates are respectively (xa、ya) and (xb、yb), it is respectively (x that the jth of circuit 2, which is segmented two extreme coordinates,c,、yc) and (xd、yd), It can then judge whether two line segments are parallel by following formula:

(yb-ya)×(xd-xc)=(yd-yc)×(xb-xa);

If two line segments are not parallel, it can judge whether it may intersect by solving the corresponding equation of two line segments, equation General solution be shown below:

The third situation in above formula corresponding diagram 3.When it is 0 that denominator is will appear from the 4th kind of situation above formula, now Directly with x=constants come instead of the original equations of x.

If the crosspoint obtained within quadrilateral area, mean to be found that determined by four end points circuit across Connect, otherwise mean that twolink segmentation is not bridged.

Further, as shown in figure 1, also including after step S200:

S300, when bridging line, obtain circuit span pick up the particular location of beginning shaft tower and the specific seat of circuit intersection point Mark.

Illustrate the above-mentioned transmission line of electricity bridging based on chart database and spatial information below by a specific example How discrimination method is realized.

So that the general emigrant's DC lines of super-pressure 800kV in Guangxi Power Grid major network and super-pressure 500kV inkstones worship A-wire circuit as an example Carry out the research of crossover region.There are two crossover regions between two lines road, two can be tried to achieve according to the ergodic algorithm of the present invention The relevant information of crossover region, mainly originates the tool of shaft tower coordinate and circuit joining accordingly including two crossover regions Body coordinate, it is as shown in the table.

The bridging identification result of two actual high-voltage transmission lines of electricity

Also referring to Fig. 4, it is that the general emigrant's DC lines of extra-high voltage 800kV and super-pressure 500kV inkstones worship A-wire circuit Bridging mark figure.There are two crossover regions between two lines road in actual conditions, the present invention has tried to achieve the two crossover regions Relevant information, including two crossover regions originate shaft tower coordinate and the specific coordinate of circuit joining, acquired results accordingly It is consistent with actual conditions.

Therefore, the transmission line of electricity bridging discrimination method based on chart database and spatial information calculates accurate, side Just it is simple.

Based on the above method, distinguished present invention also offers a kind of transmission line of electricity bridging based on chart database and spatial information Knowledge system, as shown in figure 5, the system includes:

Modeling unit 100 is abstract for section by electric power line pole tower for the device map by setting up power network major network Abstract every section of transmission line of electricity between point, two shaft towers is side, and the geographical coordinate attribute abstraction of shaft tower is the attribute of node, sets up electricity Network data model;

Judging unit 200, for utilizing corresponding graph-theoretical algorithm, is calculated between circuit two-by-two with the presence or absence of intersecting line segment, So as to judge whether circuit bridges.

Preferably, as shown in figure 5, the transmission line of electricity based on chart database and spatial information is bridged in identification system, Also include:

Computing unit 300, the particular location and circuit that beginning shaft tower is picked up for when bridging line, obtaining circuit span is handed over The specific coordinate of point.

Preferably, it is described to judge single in the transmission line of electricity bridging identification system based on chart database and spatial information Utilized in member before corresponding graph-theoretical algorithm, the multigraph retrieved is deteriorated into simple graph.

Preferably, it is described to judge single in the transmission line of electricity bridging identification system based on chart database and spatial information In member corresponding graph-theoretical algorithm with Cypher scripts come abstract expression.

Preferably, it is described to judge single in the transmission line of electricity bridging identification system based on chart database and spatial information Calculate between circuit two-by-two and specifically included with the presence or absence of intersecting line segment in member:

Subelement is overlapped, for judging whether overlapped between two circuits, is intersected if being then not present;

Parallel subelement, for judging whether two circuits are parallel, is not present if parallel and intersects;Otherwise deposited between two circuits Intersecting.

Functional unit in said system has all been described in detail in method, just no longer repeats one by one here .

In summary, it is provided by the present invention based on chart database and spatial information transmission line of electricity bridging discrimination method and System, the data storage on the basis of initial data physical topological structure, will be defeated by setting up the device map of power network major network Abstract electric wire line pole tower is node, and abstract every section of transmission line of electricity between two shaft towers is side, the geographical coordinate attribute abstraction of shaft tower For the attribute of node, electric network data model is set up, then using corresponding graph-theoretical algorithm, can try to achieve and whether deposit between circuit two-by-two Judge whether circuit bridges intersecting line segment, and further try to achieve particular location and circuit friendship that circuit span picks up beginning shaft tower The specific coordinate of point, it is convenient and simple.

It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention Protect scope.

Claims (8)

1. a kind of transmission line of electricity bridging discrimination method based on chart database and spatial information, it is characterised in that methods described bag Include:
A, the device map by setting up power network major network, by electric power line pole tower it is abstract be node, every section between two shaft towers Abstract transmission line of electricity is side, and the geographical coordinate attribute abstraction of shaft tower is the attribute of node, sets up electric network data model;
B, using corresponding graph-theoretical algorithm, calculate between circuit two-by-two with the presence or absence of intersecting line segment, thus judge circuit whether across Connect;
Calculate between circuit two-by-two and specifically included with the presence or absence of intersecting line segment in the step B:
B1, first determine whether whether overlapped between two circuits, intersect if being then not present;
If B2, misaligned, determine whether whether two circuits are parallel by below equation, intersect if being then not present:
(yb-ya)×(xd-xc)=(yd-yc)×(xb-xa);
If B3, not parallel, determine whether whether two circuits intersect by below equation, if the crosspoint obtained is by four Determined by end points within quadrilateral area, then two bridging line, otherwise two circuits do not bridge:
Wherein, two extreme coordinates of circuit one are respectively (xa、ya) and (xb、yb), two extreme coordinates of circuit two are respectively (xc,、yc) and (xd、yd), when occur denominator be 0 situation when, directly with x=constants come instead of above-mentioned formula x.
2. the transmission line of electricity based on chart database and spatial information bridges discrimination method according to claim 1, its feature exists In also including after the step B:
C, when bridging line, obtain circuit span pick up the particular location of beginning shaft tower and the specific coordinate of circuit intersection point.
3. the transmission line of electricity based on chart database and spatial information bridges discrimination method according to claim 1, its feature exists In, in the step B utilize corresponding graph-theoretical algorithm before, the multigraph retrieved is deteriorated into simple graph.
4. the transmission line of electricity based on chart database and spatial information bridges discrimination method according to claim 1, its feature exists In, in the step B corresponding graph-theoretical algorithm with Cypher scripts come abstract expression.
5. a kind of transmission line of electricity bridging identification system based on chart database and spatial information, it is characterised in that the system bag Include:
Modeling unit is abstract for node, two bars by electric power line pole tower for the device map by setting up power network major network Abstract every section of transmission line of electricity between tower is side, and the geographical coordinate attribute abstraction of shaft tower is the attribute of node, sets up electric network data mould Type;
Judging unit, for utilizing corresponding graph-theoretical algorithm, is calculated with the presence or absence of line segment is intersected between circuit two-by-two, so as to judge Whether circuit bridges;
Calculate between circuit two-by-two and specifically included with the presence or absence of intersecting line segment in the judging unit:
Subelement is overlapped, for judging whether overlapped between two circuits, is intersected if being then not present;
Parallel subelement, determines whether whether two circuits are parallel by below equation, intersects if being then not present:
(yb-ya)×(xd-xc)=(yd-yc)×(xb-xa);
Intersecting subelement, determines whether whether two circuits intersect by below equation, if the crosspoint obtained is by four ends Put within identified quadrilateral area, then two bridging lines, otherwise two circuits are not bridged:
Wherein, two extreme coordinates of circuit one are respectively (xa、ya) and (xb、yb), two extreme coordinates of circuit two are respectively (xc,、yc) and (xd、yd), when occur denominator be 0 situation when, directly with x=constants come instead of above-mentioned formula x.
6. the transmission line of electricity based on chart database and spatial information bridges identification system according to claim 5, its feature exists In, in addition to:
Computing unit, the particular location of beginning shaft tower and the tool of circuit intersection point are picked up for when bridging line, obtaining circuit span Body coordinate.
7. the transmission line of electricity based on chart database and spatial information bridges identification system according to claim 5, its feature exists In, in the judging unit utilize corresponding graph-theoretical algorithm before, the multigraph retrieved is deteriorated into simple graph.
8. the transmission line of electricity based on chart database and spatial information bridges identification system according to claim 5, its feature exists In, in the judging unit corresponding graph-theoretical algorithm with Cypher scripts come abstract expression.
CN201410307359.3A 2014-06-30 2014-06-30 Transmission line of electricity bridging discrimination method and system based on chart database and spatial information CN104123437B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410307359.3A CN104123437B (en) 2014-06-30 2014-06-30 Transmission line of electricity bridging discrimination method and system based on chart database and spatial information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410307359.3A CN104123437B (en) 2014-06-30 2014-06-30 Transmission line of electricity bridging discrimination method and system based on chart database and spatial information

Publications (2)

Publication Number Publication Date
CN104123437A CN104123437A (en) 2014-10-29
CN104123437B true CN104123437B (en) 2017-08-04

Family

ID=51768846

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410307359.3A CN104123437B (en) 2014-06-30 2014-06-30 Transmission line of electricity bridging discrimination method and system based on chart database and spatial information

Country Status (1)

Country Link
CN (1) CN104123437B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105243205B (en) * 2015-09-25 2018-11-23 中国南方电网有限责任公司超高压输电公司广州局 The method of calibration of suspicious breakpoint in a kind of electric network model
CN105243206B (en) * 2015-09-25 2020-07-07 中国南方电网有限责任公司超高压输电公司广州局 Method for verifying overlapping elements in power grid model
CN106055590A (en) * 2016-05-23 2016-10-26 环球大数据科技有限公司 Power grid data processing method and system based on big data and graph database
CN108020750A (en) * 2016-11-02 2018-05-11 全球能源互联网研究院 A kind of power distribution network power failure range analysis method and analytical equipment
CN107222339B (en) * 2017-05-27 2020-06-05 全球能源互联网研究院有限公司 Graph database-based fault analysis method and device for power information communication system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2274778Y (en) * 1996-10-29 1998-02-18 杨运富 Pre-determining device for interphase short cut
CN2785226Y (en) * 2005-01-21 2006-05-31 杨运富 Long-distance short circuit protector
CN102208811A (en) * 2011-05-18 2011-10-05 上海市电力公司 Wiring structure of distribution network containing microgrid
CN102638100A (en) * 2012-04-05 2012-08-15 华北电力大学 District power network equipment abnormal alarm signal association analysis and diagnosis method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2274778Y (en) * 1996-10-29 1998-02-18 杨运富 Pre-determining device for interphase short cut
CN2785226Y (en) * 2005-01-21 2006-05-31 杨运富 Long-distance short circuit protector
CN102208811A (en) * 2011-05-18 2011-10-05 上海市电力公司 Wiring structure of distribution network containing microgrid
CN102638100A (en) * 2012-04-05 2012-08-15 华北电力大学 District power network equipment abnormal alarm signal association analysis and diagnosis method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
基于GIS的电力抢修智能调度系统的研究;钟安勇;《中国优秀硕士学位论文全文数据库-工程科技Ⅱ辑》;20090615(第06期);第C042-371页 *
基于规则的配电地理信息系统导出数据校验与修复;肖峻等;《电力系统自动化》;20070525;第31卷(第10期);第76-81页 *
基于遗传模拟退火算法的战时物流配送路径优化研究;刘丽波等;《现代物流-铁道运输与经济》;20070715;第29卷(第7期);第71-74页 *

Also Published As

Publication number Publication date
CN104123437A (en) 2014-10-29

Similar Documents

Publication Publication Date Title
Weng et al. Distributed energy resources topology identification via graphical modeling
CN103745109B (en) A kind of bad data detection and identification method measured based on PMU measurement and SCADA
CN104297629B (en) The section fault detection of power distribution network containing distributed power source and localization method
CN104090985B (en) A kind of Active Splitting optimal section searching method based on electrical distance
Du et al. On-line estimation of transmission line parameters, temperature and sag using PMU measurements
CN104730410B (en) A kind of distribution line disconnection monitoring method and device based on voltage x current vector
Xiao et al. Cascading link failure in the power grid: A percolation-based analysis
Lee et al. An intelligent and efficient fault location and diagnosis scheme for radial distribution systems
CN101968525B (en) Fault positioning method for power distribution network by combining simulation calculation and real-time monitoring
Mousavi-Seyedi et al. Parameter estimation of multiterminal transmission lines using joint PMU and SCADA data
Liao Fault location observability analysis and optimal meter placement based on voltage measurements
Sun et al. An automatic faulted line section location method for electric power distribution systems based on multisource information
WO2015143846A1 (en) Online real-time loop closing method based on integration of main network and distribution network
CN104297632B (en) Method for detecting grid fault online under condition of limited number of PMUs based on least square method
CN102521398A (en) Modeling method for substation-dispatching center two-level distributed type power grid
CN105067951B (en) T link single-phase ground fault distance measuring methods based on many time section informations
CN102982379B (en) Power system state estimation method and the system of model is estimated based on set theory
CN103066689B (en) Online selection system of load transferring paths of 10kV feeders
CN106385012B (en) Feeder line zero-sequence protection method and device
CN104297616B (en) A kind of 10kV distribution line broken string method for detecting interacted based on multi-system information
CN105576660B (en) Local distribution network in-circuit emulation analytical equipment and system
CN103762591A (en) Power distribution network topology layout method
CN103460552B (en) For the method determining the topology of low voltage electric network
CN104200288B (en) A kind of equipment fault Forecasting Methodology based on dependency relation identification between factor and event
CN101789596A (en) Automatic detection method of power grid failure

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant