A method for power grid connectivity analysis based on static topological islands

An analysis method and topological island technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as high performance overhead, achieve low overhead, both performance and real-time performance, and reduce performance overhead

Active Publication Date: 2020-04-28
祥云供电有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the state of the switch in the power grid changes, or when some equipment failure needs to be simulated, the topology island may be merged / split, and the performance overhead is relatively large.

Method used

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  • A method for power grid connectivity analysis based on static topological islands
  • A method for power grid connectivity analysis based on static topological islands

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The power grid connectivity analysis method described in Example 1 is traced upstream of the distribution network

[0032] The power point is the equipment that supplies power to the specified equipment. In the distribution network, the power point is generally a substation.

[0033] Upstream equipment, that is, the equipment that passes through from the power point to the equipment to be analyzed, whether these equipment work normally, the workload and other parameters are of great significance to the power supply reliability of the equipment to be analyzed.

[0034] Distribution network upstream traceability, that is, the process of querying the upstream equipment of the equipment to be analyzed in the distribution network.

[0035] Step (1) Establish a static topology island. The data warehouse in this embodiment is an Hbase database. Write a mapreduce model program to read the data in the database to the map program node in pieces, and the map program node encapsula...

Embodiment 2

[0053] The power grid connectivity analysis method described in Embodiment 2 is used for power outage simulation analysis of distribution network

[0054] Power outage simulation analysis, that is, assuming that one or more devices in the power grid fails, and analyzing which devices in the specified area will be powered off by the hypothetical faulty devices.

[0055] Due to the design of a universal traverser, the steps and programs of the power grid simulation analysis can reuse the corresponding parts in the first embodiment, and only need to redesign the visitor function visitor and the termination condition function isEnd used in the step (3.1) of the first embodiment , and set the equipment to be analyzed as the power point of the area.

[0056] The design of the visitor function Create a list list in the visitor, when the visitor receives the device e passed in by the universal traverser, add e to the list;

[0057] The return value of visitor is "ChoseBySwitchAndSim"...

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Abstract

The invention relates to a static-topological-island-based power grid connectivity analysis method. The method comprises: (1), establishing a static topology island; (2), calculating dynamic reachable equipment of each device; (3), establishing a general traverse device; (4), operating the general traverse device, collecting a node obtained by an access function visitor, and returning a query result according to a needed format; and (5), modifying a related state of an influenced device if a switching state changes or the device is simulated to have a fault. The method has the following beneficial effects: the performance cost of the system in a node state can be reduced substantially; good performances and high real-time property are realized at an extremely low analysis cost; the code has high reusability and extensibility is high; the massive grid is segmented into a plurality of topological islands, so that the topological islands can be dispersed into the distributed system; and because the topological islands do not carry out split or combination modification, a distributed system consistence problem caused by the modification operation can be solved.

Description

Background technique [0001] Grid connectivity analysis plays an important role in power systems. Such as power point traceability, short circuit calculation, power outage analysis, etc., are all applications based on grid connectivity analysis. Compared with the connectivity analysis business in other fields, power grid connectivity analysis has the characteristics of large number and types of equipment, complex topology structure, and frequent changes in node status. Therefore, the method of power grid connectivity analysis must have the ability to efficiently process a large number of topological nodes. And it has high real-time performance. [0002] There are generally two existing methods for network topology connectivity analysis: adjacency matrix method and tree / directed graph search method. [0003] The adjacency matrix method is to construct an n*n 0-1 matrix M (n is the number of topological nodes), if node i can reach node j, set the matrix M[i][j] to 1, and perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06
Inventor 王有斌程立光李文雯杨中华张文华刘雨
Owner 祥云供电有限公司
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