CN106646100B - A kind of Fault Locating Method of incomplete observing and controlling power distribution network - Google Patents
A kind of Fault Locating Method of incomplete observing and controlling power distribution network Download PDFInfo
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- CN106646100B CN106646100B CN201610824532.6A CN201610824532A CN106646100B CN 106646100 B CN106646100 B CN 106646100B CN 201610824532 A CN201610824532 A CN 201610824532A CN 106646100 B CN106646100 B CN 106646100B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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Abstract
The invention discloses a kind of Fault Locating Methods of incomplete observing and controlling power distribution network, carry out the whole network fault location to incomplete observing and controlling power distribution network including the Fault Locating Method according to observing and controlling area, reduce fault zone, obtain primary fault region；Whether if primary fault region includes non-observing and controlling area, detecting in non-observing and controlling region has phone call for appeal, if so, obtaining failure generation area according to the Fault Locating Method in non-observing and controlling area according to the fault location information obtained from phone call for appeal；Otherwise, region between observing and controlling area and non-observing and controlling area is determined as failure generation area；If primary fault region does not include non-observing and controlling area, primary fault region is determined as failure generation area.As it can be seen that Fault Locating Method provided by the present application, sufficiently comprehensively utilizes the fault message in observing and controlling area and non-observing and controlling area, fault location is divided into two stages, improves the accuracy of the fault location of incomplete observing and controlling power distribution network.
Description
Technical field
The present invention relates to distribution network failure field of locating technology, more particularly to a kind of failure of incomplete observing and controlling power distribution network
Localization method.
Background technique
In practical large-scale power distribution network, the partial region for being frequently present of main feeder and its branch line is installed with measuring and controlling equipment, separately
The phenomenon that measuring and controlling equipment is not installed in a part of region.Power distribution automation transformation, Neng Gouji is completed in the most of power distribution networks in city
Pass through SCADA (Supervisory Control And in FTU (Feeder Terminal Unit, feeder terminal unit)
Data Acquisition, data acquisition and supervisor control) the obtained various real time information of system realize fault location.But
It is to there are many 10kV rural power grids routes not carry out distribution network automated transformation also in the urban distribution network with large village,
Due to missing of measuring and controlling equipment etc., it is only capable of the Trouble call phone information made using user after power failure and realizes power distribution network event
Barrier positioning.
Existing electrical power distribution network fault location method is mainly individually to observing and controlling regional implementation Position Research, or individually to non-survey
It controls region and carries out fault location.But there is presently no for the incomplete observing and controlling power distribution network mixed containing non-observing and controlling area and observing and controlling area
Fault Locating Method research.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Summary of the invention
The object of the present invention is to provide a kind of Fault Locating Methods of incomplete observing and controlling power distribution network, improve incomplete observing and controlling
The accuracy of the fault location of power distribution network.
In order to solve the above technical problems, the present invention provides a kind of Fault Locating Method of incomplete observing and controlling power distribution network, packet
It includes:
Step S101: it is fixed that the whole network failure is carried out to the incomplete observing and controlling power distribution network according to the Fault Locating Method in observing and controlling area
Position reduces fault zone, obtains primary fault region；
Step S102: judging whether the primary fault region includes non-observing and controlling area, if it is, S103 is entered step,
Otherwise, S106 is entered step；
Step S103: whether detection has phone call for appeal in the non-observing and controlling region, if so, S104 is entered step, otherwise,
Enter step S105；
Step S104: according to the fault location information obtained from the phone call for appeal according to the fault location in non-observing and controlling area
Method determines failure generation area, enters step S107；
Step S105: region between observing and controlling area and the non-observing and controlling area is determined as failure generation area, is entered step
S107；
Step S106: the primary fault region is determined as failure generation area, enters step S107；
Step S107: terminate.
Preferably, before step S101 further include:
Step S100: the incomplete observing and controlling power distribution network is divided into observing and controlling area and non-observing and controlling area.
Preferably, step S100 specifically:
The incomplete observing and controlling power distribution network is divided into observing and controlling area according to whether the switch on main feeder and branch line is equipped with FTU
With non-observing and controlling area.
Preferably, step S101 specifically:
Step S1011: failure electrical quantity pass is calculated in the fault current for flowing through j-th of switch according to FTU acquisition
Join function lambdaj, wherein calculation relational expression is；
Wherein, AjThe fault current switched for j-th, IaAnd IbRespectively current quick and overcurrent protection setting valve；
Step S1012: according to the failure electrical quantity correlation function λjThe fault current that j-th of switch is calculated is out-of-limit
Signal, wherein calculation formula are as follows:
Step S1013: the out-of-limit signal of fault current switched according to described j-th uses the observing and controlling area based on ant group algorithm
Domain localization method carries out the whole network fault location, reduces fault zone, obtains primary fault region, wherein ant group algorithm is corresponding
Model formation are as follows:
Wherein, F is ant group algorithm evaluation function, IjThe out-of-limit signal of fault current switched for j-th；N is total number of switches；
I* j(SB) it is the out-of-limit expectation value function of the failure for j-th of switch that device status information determines；X (k) is to open with k-th of contact
Close the status information of associated devices or single supply Radial network end-equipment；Ik is and k-th associate device associated switch
Electric current gets over limit information；M is associate device sum.
Preferably, step S104 specifically:
Step S1041: according to obtaining fault location information in the phone call for appeal；
Step S1042: judge in the fault location decision table based on rough set theory whether to include that the fault location is believed
Corresponding region is ceased, if it is, entering step S1043, otherwise, enters step S1044；
Step S1043: region corresponding with the fault location information is determined according to the fault location decision table, and is broken
Open the breakdown switch in the region or the switch with fault correlation；
Step S1044: fault zone is determined into non-observing and controlling area not to be covered in the fault location decision table.
Preferably, the acquisition process of the fault location decision table based on rough set theory are as follows:
The positioning of the initial distribution network failure based on trouble calling information is automatically formed by Distribution power network GIS Network topology
Decision table；
Reduction is carried out based on attribute of the binary logic to the initial distribution network failure locational decision table；
It is carried out about using attribute value of the optimization algorithm to the initial distribution network failure locational decision table after attribute reduction
Letter obtains the fault location decision table of least reduction form.
The present invention provides a kind of Fault Locating Methods of incomplete observing and controlling power distribution network, fixed including the failure according to observing and controlling area
Position method carries out the whole network fault location to incomplete observing and controlling power distribution network, reduces fault zone, obtains primary fault region；If just
Beginning fault zone includes non-observing and controlling area, then whether detect in non-observing and controlling region has phone call for appeal, if so, according to from phone call for appeal
The fault location information of middle acquisition obtains failure generation area according to the Fault Locating Method in non-observing and controlling area；Otherwise, by observing and controlling area
And region is determined as failure generation area between non-observing and controlling area；If primary fault region does not include non-observing and controlling area, will be initial
Fault zone is determined as failure generation area.As it can be seen that Fault Locating Method provided by the present application, sufficiently comprehensively utilize observing and controlling area and
The fault message in non-observing and controlling area, is divided into two stages for fault location, first, in accordance with the fault location thinking in observing and controlling area to incomplete
Whether observing and controlling power distribution network carries out the whole network failure Primary Location, reduces fault zone, obtains primary fault region, then in conjunction with wrapping
The Fault Locating Method in Kuo Fei observing and controlling area carries out failure accurate positioning, improves the fault location of incomplete observing and controlling power distribution network
Accuracy.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow chart of the process of the Fault Locating Method of incomplete observing and controlling power distribution network provided by the invention；
Fig. 2 is a kind of structural schematic diagram of incomplete observing and controlling power distribution network provided by the invention.
Specific embodiment
Core of the invention is to provide a kind of Fault Locating Method of incomplete observing and controlling power distribution network, improves incomplete observing and controlling
The accuracy of the fault location of power distribution network.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, Fig. 1 is a kind of process of the Fault Locating Method of incomplete observing and controlling power distribution network provided by the invention
Flow chart, comprising:
Step S101: carrying out the whole network fault location to incomplete observing and controlling power distribution network according to the Fault Locating Method in observing and controlling area,
Fault zone is reduced, primary fault region is obtained；
Preferably, before step S101 further include:
Step S100: incomplete observing and controlling power distribution network is divided into observing and controlling area and non-observing and controlling area.
Preferably, step S100 specifically:
Incomplete observing and controlling power distribution network is divided into observing and controlling area and non-according to whether the switch on main feeder and branch line is equipped with FTU
Observing and controlling area.
Specifically, referring to figure 2., Fig. 2 is a kind of structural schematic diagram of incomplete observing and controlling power distribution network provided by the invention.
It is understood that the region due to distribution automation improvement project is different, the same feeder line be may be simultaneously present
Non- observing and controlling area and observing and controlling region, the switch on the main feeder and branch line in observing and controlling area install FTU, rather than the main feeder and branch in observing and controlling area
On line switch is without FTU.The case where observing and controlling area is mixed with non-observing and controlling area may be in the form of cross-mixing shown in Fig. 2, can also
It can be to concentrate mixed form, i.e. observing and controlling area does not have any intersect with non-observing and controlling area.
In addition, positioning for incomplete observing and controlling distribution network failure, it is installed with FTU due to centainly having switch on main feeder,
It is only possible to not be that each switch on main feeder installs FTU, therefore either cross-mixing power distribution network, or mixing is concentrated to match
Power grid can be carried out preferentially according to the fault location thinking in observing and controlling area, fault zone is narrowed down to two installing FTU of main feeder and is opened
Between the pass or both ends of main feeder.
Preferably, step S101 specifically:
Step S1011: failure electrical quantity association letter is calculated in the fault current for flowing through j-th of switch according to FTU acquisition
Number λj, wherein calculation relational expression is；
Wherein, AjThe fault current switched for j-th, IaAnd IbRespectively current quick and overcurrent protection setting valve；
Step S1012: according to failure electrical quantity correlation function λjThe out-of-limit letter of fault current of j-th of switch is calculated
Number, wherein calculation formula are as follows:
There are two types of modes for the data that live FTU equipment uploads: one is telemetering input, another kind is remote signalling input.Telemetering
Input refers to that the fault current that switch is flowed through in acquisition is sent to processing system (such as SCADA system) by FTU, then processing system
The electrical quantity correlation function λ that is out of order is calculated further according to fault currentj.Remote signalling input then refers to that the failure of switch is flowed through in FTU acquisition
The electrical quantity correlation function λ that is out of order directly is calculated according to fault current after electric currentj。
Specifically, by failure electrical quantity correlation function calculation formula it is found that gained failure electrical quantity correlation function λiValue
Between 0 to 1, thus current invention assumes that gained failure electrical quantity correlation function λiWhen more than or equal to 0.5, FTU determines that this is opened
Fault current is flowed through in pass, therefore uploading data is 1, and otherwise uploading data is 0.
As it can be seen that can be exchanged into 0-1 data through parsing if FTU up-delivering signal is fault curre；If FTU up-delivering signal
For remote signalling value, then its 0-1 data can be directly utilized.After obtaining FTU failure 0-1 data, using ant group algorithm to the event of observing and controlling area
Barrier positioning and optimizing model is solved, and obtains the position that distribution network failure occurs.
Step S1013: the out-of-limit signal of fault current according to j-th of switch is fixed using the observing and controlling region based on ant group algorithm
Position method carries out the whole network fault location, reduces fault zone, obtains primary fault region, wherein the corresponding model of ant group algorithm
Formula are as follows:
Wherein, F is ant group algorithm evaluation function, IjThe out-of-limit signal of fault current switched for j-th；N is total number of switches；
I*j(SB) it is the out-of-limit expectation value function of the failure for j-th of switch that device status information determines；X (k) is to open with k-th of contact
Close the status information of associated devices or single supply Radial network end-equipment；Ik is and k-th associate device associated switch
Electric current gets over limit information；M is associate device sum.
It is understood that processing system can assume that some switches are breakdown switch, and the switch is obtained to assume failure
When switch, other switch states at this time, and if when being breakdown switch with the actually switch other switches theory state into
Row compares, this comparison result is evaluated by ant group algorithm evaluation function F, and ant group algorithm evaluation function F is smaller, then it represents that should
A possibility that corresponding hypothesis breakdown switch of function is breakdown switch is bigger.
Step S102: judging whether primary fault region includes non-observing and controlling area, if it is, S103 is entered step, otherwise,
Enter step S106；
Whether step S103: detecting in non-observing and controlling region has phone call for appeal, if so, entering step S104, otherwise, enters
Step S105；
Step S104: according to the fault location information obtained from phone call for appeal according to the Fault Locating Method in non-observing and controlling area
It determines failure generation area, enters step S107；
If failure occurs in non-observing and controlling area, according to the Trouble call phone in non-observing and controlling region, using non-observing and controlling area failure
Fault zone can be further contracted to more accurate range by localization method.
Preferably, step S104 specifically:
Step S1041: fault location information is obtained in foundation phone call for appeal；
Step S1042: judge in the fault location decision table based on rough set theory whether to include fault location information pair
Otherwise the region answered, enters step S1044 if it is, entering step S1043；
Step S1043: region corresponding with fault location information is determined according to fault location decision table, and in areas of disconnection
Breakdown switch or switch with fault correlation；
Step S1044: fault zone is determined into non-observing and controlling area not to be covered in fault location decision table.
Specifically, the fault location decision table based on rough set theory is established in advance, including many past experience
Data, these empirical datas include the corresponding region of fault location information obtained according to phone call for appeal and the area put in order
The corresponding main feeder in domain or branch line.But the non-observing and controlling area of incomplete observing and controlling power distribution network is more after all, region is big, and fault location is determined
Plan table can not accomplish that one, each specific region is not leaked.Therefore, it is necessary first to judge in fault location decision table whether include
The corresponding region of fault location information.
For example, it is assumed that the non-observing and controlling area is made of A, B and C three parts, may establish fault location decision table
When only A and B arrangement is entered, and C is not established into, on this basis, if including failure in fault location decision table
The region can be then determined as failure generation area by the corresponding region of location information (such as A), and the failure in areas of disconnection is opened
Pass or the switch with fault correlation.It, can if in fault location decision table not including the corresponding region of fault location information
The region C is determined as failure generation area and (because having determined that the non-faulty phone call for appeal in observing and controlling area, and eliminates A and B, then
It can only be C).
Preferably, the acquisition process of the fault location decision table based on rough set theory are as follows:
The positioning of the initial distribution network failure based on trouble calling information is automatically formed by Distribution power network GIS Network topology
Decision table；
Reduction is carried out based on attribute of the binary logic to initial distribution network failure locational decision table；
It is carried out about using attribute value of the optimization algorithm to the initial distribution network failure locational decision table after attribute reduction
Letter obtains the fault location decision table of least reduction form.
Specifically, the power distribution network based on trouble calling information is automatically formed by Distribution power network GIS Network topology first
Fault location decision table is then based on binary logic and carries out attribute reduction to decision table, finally uses optimization algorithm reduction attribute value,
The least reduction form of fault location decision table is exported, to carry out according to the fault location decision table of least reduction form quick
Determine distribution network failure position.
Step S105: region between observing and controlling area and non-observing and controlling area is determined as failure generation area, enters step S107；
Step S106: primary fault region is determined as failure generation area, enters step S107；
Specifically, the whole network fault location is carried out to incomplete observing and controlling power distribution network in the Fault Locating Method according to observing and controlling area,
Fault zone is reduced, after obtaining primary fault region, is also narrowed down to fault zone between two installing FTU switches of main feeder
Or main feeder both ends when, then judge whether primary fault region includes non-observing and controlling area, if failure occurs in non-observing and controlling area,
Further fault zone can be reduced using non-observing and controlling area Fault Locating Method according to the Trouble call phone in non-observing and controlling region
To more accurate range.If failure occurs in observing and controlling area, non-observing and controlling region will not faulty phone call for appeal, then can be further
The main feeder that fault zone is contracted to non-observing and controlling area is not installed into load side on the switch and main feeder of FTU and installs opening for FTU
Between pass.
Step S107: terminate.
The present invention provides a kind of Fault Locating Methods of incomplete observing and controlling power distribution network, fixed including the failure according to observing and controlling area
Position method carries out the whole network fault location to incomplete observing and controlling power distribution network, reduces fault zone, obtains primary fault region；If just
Beginning fault zone includes non-observing and controlling area, then whether detect in non-observing and controlling region has phone call for appeal, if so, according to from phone call for appeal
The fault location information of middle acquisition obtains failure generation area according to the Fault Locating Method in non-observing and controlling area；Otherwise, by observing and controlling area
And region is determined as failure generation area between non-observing and controlling area；If primary fault region does not include non-observing and controlling area, will be initial
Fault zone is determined as failure generation area.As it can be seen that Fault Locating Method provided by the present application, sufficiently comprehensively utilize observing and controlling area and
The fault message in non-observing and controlling area, is divided into two stages for fault location, first, in accordance with the fault location thinking in observing and controlling area to incomplete
Whether observing and controlling power distribution network carries out the whole network failure Primary Location, reduces fault zone, obtains primary fault region, then in conjunction with wrapping
The Fault Locating Method in Kuo Fei observing and controlling area carries out failure accurate positioning, improves the fault location of incomplete observing and controlling power distribution network
Accuracy.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In the storage medium of any other forms well known in field.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (6)
1. a kind of Fault Locating Method of incomplete observing and controlling power distribution network characterized by comprising
Step S101: carrying out the whole network fault location to the incomplete observing and controlling power distribution network according to the Fault Locating Method in observing and controlling area,
Fault zone is reduced, primary fault region is obtained；
Step S102: judging whether the primary fault region includes non-observing and controlling area, if it is, S103 is entered step, otherwise,
Enter step S106；
Step S103: whether detection has phone call for appeal in the non-observing and controlling region, if so, entering step S104, otherwise, enters
Step S105；
Step S104: according to the fault location information obtained from the phone call for appeal according to the Fault Locating Method in non-observing and controlling area
It determines failure generation area, enters step S107；
Step S105: region between observing and controlling area and the non-observing and controlling area is determined as failure generation area, enters step S107；
Step S106: the primary fault region is determined as failure generation area, enters step S107；
Step S107: terminate.
2. Fault Locating Method as described in claim 1, which is characterized in that before step S101 further include:
Step S100: the incomplete observing and controlling power distribution network is divided into observing and controlling area and non-observing and controlling area.
3. Fault Locating Method as claimed in claim 2, which is characterized in that step S100 specifically:
The incomplete observing and controlling power distribution network is divided into observing and controlling area and non-according to whether the switch on main feeder and branch line is equipped with FTU
Observing and controlling area.
4. Fault Locating Method as claimed in claim 3, which is characterized in that step S101 specifically:
Step S1011: failure electrical quantity association letter is calculated in the fault current for flowing through j-th of switch according to FTU acquisition
Number λj, wherein calculation relational expression is；
Wherein, AjThe fault current switched for j-th, IaAnd IbRespectively current quick and overcurrent protection setting valve；
Step S1012: according to the failure electrical quantity correlation function λjThe out-of-limit signal of fault current of j-th of switch is calculated,
Wherein, calculation formula are as follows:
Step S1013: the out-of-limit signal of fault current switched according to described j-th is fixed using the observing and controlling region based on ant group algorithm
Position method carries out the whole network fault location, reduces fault zone, obtains primary fault region, wherein the corresponding model of ant group algorithm
Formula are as follows:
Wherein, F is ant group algorithm evaluation function, IjThe out-of-limit signal of fault current switched for j-th；N is total number of switches；I* j
(SB) it is the out-of-limit expectation value function of the failure for j-th of switch that device status information determines；X (k) be and k-th of interconnection switch
The status information of associated devices or single supply Radial network end-equipment；Ik is the electricity with k-th of associate device associated switch
Stream gets over limit information；M is associate device sum.
5. Fault Locating Method as described in claim 1, which is characterized in that step S104 specifically:
Step S1041: according to obtaining fault location information in the phone call for appeal；
Step S1042: judge in the fault location decision table based on rough set theory whether to include the fault location information pair
Otherwise the region answered, enters step S1044 if it is, entering step S1043；
Step S1043: region corresponding with the fault location information is determined according to the fault location decision table, and disconnects institute
State the breakdown switch in region or the switch with fault correlation；
Step S1044: fault zone is determined into non-observing and controlling area not to be covered in the fault location decision table.
6. Fault Locating Method as claimed in claim 5, which is characterized in that the fault location based on rough set theory is determined
The acquisition process of plan table are as follows:
The initial distribution network failure locational decision based on trouble calling information is automatically formed by Distribution power network GIS Network topology
Table；
Reduction is carried out based on attribute of the binary logic to the initial distribution network failure locational decision table；
Reduction is carried out using attribute value of the optimization algorithm to the initial distribution network failure locational decision table after attribute reduction, is obtained
To the fault location decision table of least reduction form.
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| CN109209781B (en) * | 2017-06-29 | 2019-11-05 | 北京金风科创风电设备有限公司 | The Fault Locating Method and device of wind power generating set |
| CN108594075B (en) * | 2018-04-28 | 2020-08-21 | 国网安徽省电力公司 | Power distribution network power failure fault positioning method based on improved ant colony algorithm |
| CN110456231B (en) * | 2019-08-29 | 2020-07-28 | 南方电网科学研究院有限责任公司 | Power distribution network multiple fault diagnosis method under non-sound fault information |
| CN110398666B (en) * | 2019-08-29 | 2020-08-04 | 南方电网科学研究院有限责任公司 | Power distribution network fault diagnosis method based on relay protection time sequence information characteristics |
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