CN103048587B - There is the Fault Locating Method of the power distribution network of distributed power source, Apparatus and system - Google Patents
There is the Fault Locating Method of the power distribution network of distributed power source, Apparatus and system Download PDFInfo
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- CN103048587B CN103048587B CN201210533491.7A CN201210533491A CN103048587B CN 103048587 B CN103048587 B CN 103048587B CN 201210533491 A CN201210533491 A CN 201210533491A CN 103048587 B CN103048587 B CN 103048587B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The present invention relates to a kind of Fault Locating Method, the Apparatus and system with the power distribution network of distributed power source, belong to electric power system power distribution automatic field, wherein fault method location comprises: power distribution automation main station system, by power distribution network topological model, sets up the internal memory topology of power distribution network primary equipment; When distribution network feeder breaks down, terminal device on the spot failure judgement direction of current and on send main station system, main station system, according to fault-signal and fault current direction, determines fault zone and edge device, reaches the effect of distribution network failure region quick position.
Description
Technical field
The invention belongs to electric power system power distribution automatic field, there is the Fault Locating Method of the power distribution network of distributed power source, device and corresponding system.
Background technology
Build in the process of intelligent grid in China, the application scale of distributed power source (microgrid) constantly expands, power distribution network changes from vertical radiant type network to the horizontal networks spreading all over power supply, traditional FEEDER AUTOMATION cannot adapt to the fault handling requirement under distributed power source condition, need a kind of effective Fault Locating Method badly, when trend two-way flow network failure, accurate localizing faults region, for the operations such as follow-up fault isolation, non-faulting region restore electricity provide scientific basis.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of Fault Locating Method, device and the corresponding system with the power distribution network of distributed power source, can quick position fault zone.
In order to solve the problems of the technologies described above, the one side of embodiments of the invention provides a kind of Fault Locating Method with the power distribution network of distributed power source, comprises the steps:
When breaking down, each terminal device failure judgement direction of current in described power distribution network also reports main station system with fault-signal by feeder line;
Main station system, according to the fault-signal that each terminal device of described feeder line send and fault current direction, is determined that at least one in the multiple regions divided in advance is for fault zone, and is determined the edge device of described fault zone; Described step is specially:
According to the topological structure of power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, is divided into multiple region by distribution line, particularly, adjacent at least two can be detected the switch of fault current is divided into a region;
The fault-signal reported according to each terminal device and fault current direction, determine the fault current direction in the boundary switch in each region;
Judge the direction of the fault current in the boundary switch on each region, if certain region only has the fault current of inflow, and the fault current do not flowed out, then judge that this region is as place, trouble spot section;
Wherein, according to the topological structure of power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, step distribution line being divided into multiple region is specially;
Main station system sets up the topological model of each feeder line on described power distribution network, and described topological model contains all terminal devices on the described feeder line of described distribution network system, and the correct topological connection relation described between described terminal device;
Detect that the switch of fault current is as border, is divided into multiple region by described topography module using described, each region at least comprises two adjacent switches.
Wherein, comprise further:
Described main station system receives the fault-signal and direction of current that the terminal device on many feeder lines reports simultaneously, and positions the fault on every bar feeder line.
Correspondingly, another aspect of the present invention provides a kind of fault locator with the power distribution network of distributed power source, comprising:
Fault-signal receiving element, for receiving the fault-signal and fault current direction that each terminal device in power distribution network reported by feeder line;
Localization process unit, for according to the fault-signal that each terminal device of described feeder line send and fault current direction, at least one determining in the multiple regions divided in advance is fault zone, and determines the edge device of described fault zone; Described localization process unit comprises:
Topology area divides subelement, for the topological structure by power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, distribution line is divided into multiple region, wherein, described topology area divides each region that subelement divides and at least comprises adjacent two switches that fault current can be detected;
Zone current determination subelement, for the fault-signal that reports according to each terminal device and fault current direction, determines the fault current direction in the boundary switch in each region;
Fault zone judges subelement, for judging the direction of the fault current in the boundary switch on each region, if certain region only has the fault current of inflow, and the fault current do not flowed out, then judge that this region is as place, trouble spot section.
Wherein, comprise further:
Described fault-signal receiving element can receive the fault-signal and direction of current that the terminal device on many feeder lines reports simultaneously, and described localization process unit can position the fault on every bar feeder line.
Correspondingly, the one side again of enforcement of the present invention, a kind of fault location system with the power distribution network of distributed power source is provided, described power distribution network comprises main station system, by the terminal device that feeder line is connected with described main station system, described terminal device can to main station system reporting fault signal and direction of current, and wherein, described main station system comprises aforesaid fault locator.
Implement embodiments of the invention, there is following beneficial effect:
1, the power distribution network topological model of the power distribution automation main station system built up can be utilized, do not need repetition modeling, greatly can reduce investment and maintenance cost;
2, the method clear principle, accuracy of judgement, is easy to study and grasps, having very strong adaptability to the change of the distribution network method of operation;
3, the method is when partial fault loss of learning, also can complete localization of fault, has stronger fault-tolerance;
4, support that multithreading calls, the fault of many different feeder lines can be processed simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the fault locator of the power distribution network in one embodiment of the invention with distributed power source;
Fig. 2 is the schematic flow sheet of the Fault Locating Method of the power distribution network in one embodiment of the invention with distributed power source;
Fig. 3 is the power distribution network topological model partial schematic diagram in one embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings the preferred embodiments of the present invention are described.
A kind of fault location system with the power distribution network of distributed power source that the present invention proposes, wherein, described power distribution network comprises main station system, the terminal device be connected with described main station system by feeder line, and described terminal device can to main station system reporting fault signal and direction of current.Wherein, this main station system can be connected with many feeder lines, and every bar feeder line is associated with multiple terminal device.This main station system includes fault locator further.To fault locator, can refer to detailed description hereafter.
As shown in Figure 1, be the structural representation of fault locator in one embodiment of the invention.Described fault locator 1 comprises:
Fault-signal receiving element 10, for receiving the fault-signal and fault current direction that each terminal device in power distribution network reported by feeder line;
Localization process unit 12, for according to the fault-signal that each terminal device of described feeder line send and fault current direction, at least one determining in the multiple regions divided in advance is fault zone, and determines the edge device of described fault zone.
Wherein, described localization process unit 12 comprises:
Topology area divides subelement 120, for the topological structure by power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, is divided into multiple region by distribution line;
Zone current determination subelement 121, for the fault-signal that reports according to each terminal device and fault current direction, determines the fault current direction in the boundary switch in each region;
Fault zone judges subelement 122, for judging the direction of the fault current in the boundary switch on each region, if certain region only has the fault current of inflow, and the fault current do not flowed out, then judge that this region is as place, trouble spot section.
Wherein, described topology area divides each region that subelement 120 divides and at least comprises adjacent two switches that fault current can be detected.
Wherein, comprise further:
Described fault-signal receiving element 10 can receive the fault-signal and direction of current that the terminal device on many feeder lines reports simultaneously, and described localization process unit 12 can position the fault on every bar feeder line.
As shown in Figure 2, be the process flow diagram of Fault Locating Method in one embodiment of the invention.Composition graphs 3 is described in the lump.
The method comprises:
Step S21, when in power distribution network, fault occurs, each terminal device failure judgement direction of current in described power distribution network also reports main station system with fault-signal by feeder line;
Then, main station system, according to the fault-signal that each terminal device of described feeder line send and fault current direction, is determined that at least one in the multiple regions divided in advance is for fault zone, and is determined the edge device of described fault zone.
Comprise the steps: particularly
Step S22, according to the topological structure of power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, is divided into multiple region by distribution line; First, main station system sets up the topological model of each feeder line on described power distribution network, and described topological model contains all terminal devices on the described feeder line of described distribution network system, and the correct topological connection relation described between described equipment; Then, detect that the switch of fault current is as border, is divided into multiple region by described topography module using described, each region at least comprises two adjacent switches; As shown in Figure 3, it is the Local map of the topological model of a feeder line, wherein, node 1 and node 8 are primary power point, node 2,3,4,5,6,7,8,9 is switching node, and node 10 is distributed electrical source node, includes some terminals and arrange between each switching node, for convenience of explanation, these terminal devices are eliminated in this figure; Wherein, two switching nodes can be divided into a region, particularly, region (2,3), region (3,4), region (2 can be marked off, 4), region (3,5), region (5,6), region (6,7), region (4,9) multiple region such as, be understandable that, in other example, also plural adjacent switching node can be divided into a region.
Step S23, the fault-signal reported according to each terminal device and fault current direction, determine the fault current direction in the boundary switch in each region, for Fig. 3, wherein arrow represents the direction of fault current, then the border of region (2,3) namely has the fault current of inflow also to have the fault current of outflow;
Step S24, judge the direction of the fault current in the boundary switch on each region, if certain region only has the fault current of inflow, and the fault current do not flowed out, then judge that this region is as place, trouble spot section, in figure 3 each region is judged, find the fault current only having inflow in region (4,9), and the fault current do not flowed out, therefore can determinating area (4,9) be fault zone, then can carry out the step of follow-up fault handling, such as, by region (4,9) carry out isolated operation, other non-faulting regions restore electricity etc.
Be understandable that, described main station system receives the fault-signal and direction of current that the terminal device on many feeder lines reports simultaneously, and positions the fault on every bar feeder line.
To sum up, as can be seen from embodiment provided by the invention, method of the present invention by passing through power distribution network topological model in power distribution automation main station system, set up the internal memory topology of power distribution network primary equipment, utilize feeder fault signal and fault current direction that distribution network terminal Real-time Collection send, drive power distribution automation main station system by internal memory topological model quick position fault zone, for the operations such as follow-up fault isolation, non-faulting region restore electricity provide scientific basis.
Implement embodiments of the invention, there is following beneficial effect:
1, the power distribution network topological model of the power distribution automation main station system built up can be utilized, do not need repetition modeling, greatly can reduce investment and maintenance cost;
2, the method clear principle, accuracy of judgement, is easy to study and grasps, having very strong adaptability to the change of the distribution network method of operation;
3, the method is when partial fault loss of learning, also can complete localization of fault, has stronger fault-tolerance;
4, support that multithreading calls, the fault of many different feeder lines can be processed simultaneously.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore equivalent variations, still belongs to the scope that the present invention is contained.
Claims (5)
1. there is a Fault Locating Method for the power distribution network of distributed power source, it is characterized in that, comprise the steps:
When breaking down, each terminal device failure judgement direction of current in described power distribution network also reports main station system with fault-signal by feeder line;
Main station system, according to the fault-signal that each terminal device of described feeder line send and fault current direction, is determined that at least one in the multiple regions divided in advance is for fault zone, and is determined the edge device of described fault zone; Described step is specially:
According to the topological structure of power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, is divided into multiple region by distribution line, particularly, adjacent at least two can be detected the switch of fault current is divided into a region;
The fault-signal reported according to each terminal device and fault current direction, determine the fault current direction in the boundary switch in each region;
Judge the direction of the fault current in the boundary switch on each region, if certain region only has the fault current of inflow, and the fault current do not flowed out, then judge that this region is as place, trouble spot section;
Wherein, according to the topological structure of power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, step distribution line being divided into multiple region is specially;
Main station system sets up the topological model of each feeder line on described power distribution network, and described topological model contains all terminal devices on the described feeder line of described distribution network system, and the correct topological connection relation described between described terminal device;
Detect that the switch of fault current is as border, is divided into multiple region by described topography module using described, each region at least comprises two adjacent switches.
2. Fault Locating Method as claimed in claim 1, is characterized in that, comprise further:
Described main station system receives the fault-signal and direction of current that the terminal device on many feeder lines reports simultaneously, and positions the fault on every bar feeder line.
3. there is a fault locator for the power distribution network of distributed power source, it is characterized in that, comprising:
Fault-signal receiving element, for receiving the fault-signal and fault current direction that each terminal device in power distribution network reported by feeder line;
Localization process unit, for according to the fault-signal that each terminal device of described feeder line send and fault current direction, at least one determining in the multiple regions divided in advance is fault zone, and determines the edge device of described fault zone; Described localization process unit comprises:
Topology area divides subelement, for the topological structure by power distribution network, according to the annexation between each switch on distribution network line, to detect that the switch of fault current is for border, distribution line is divided into multiple region, wherein, described topology area divides each region that subelement divides and at least comprises adjacent two switches that fault current can be detected;
Zone current determination subelement, for the fault-signal that reports according to each terminal device and fault current direction, determines the fault current direction in the boundary switch in each region;
Fault zone judges subelement, for judging the direction of the fault current in the boundary switch on each region, if certain region only has the fault current of inflow, and the fault current do not flowed out, then judge that this region is as place, trouble spot section.
4. fault locator as claimed in claim 3, is characterized in that, comprise further:
Described fault-signal receiving element can receive the fault-signal and direction of current that the terminal device on many feeder lines reports simultaneously, and described localization process unit can position the fault on every bar feeder line.
5. one kind has the fault location system of the power distribution network of distributed power source, described power distribution network comprises main station system, by the terminal device that feeder line is connected with described main station system, described terminal device can to main station system reporting fault signal and direction of current, it is characterized in that, described main station system comprises the fault locator as any one of claim 3 to 4.
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