System for improving local electric network power supply ability analysis and providing entire process online monitoring

A technology of power supply capacity and regional power grid, applied in the direction of electrical components, circuit devices, AC network circuits, etc., to reduce calculation time, ensure calculation accuracy and processing speed, and achieve the effect of simple principle

Active Publication Date: 2013-09-25
STATE GRID CORP OF CHINA +2
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  • Application Information

AI Technical Summary

Problems solved by technology

This method comprehensively considers the branch constraints and network structure of the network, and is simple, reliable, and easy to deal with complex constraints. However, this method is only suitable for solving the power supply capacity of a local power supply network, and is not suitable for evaluating the overall urban power grid. power supply capacity

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  • System for improving local electric network power supply ability analysis and providing entire process online monitoring
  • System for improving local electric network power supply ability analysis and providing entire process online monitoring
  • System for improving local electric network power supply ability analysis and providing entire process online monitoring

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Embodiment Construction

[0032] Such as figure 1 As shown, the present invention includes a subsystem for obtaining raw power data in the target area, a subsystem for calculating power supply capacity based on the power data, and an auxiliary decision-making subsystem for evaluating the power supply capacity of the target area based on the calculation results. The following are respectively explained:

[0033] (1) if figure 2 As shown, since the data file of PSASP has a fixed format, in the subsystem for obtaining the original power data of the target area, the original power data of the target area is classified according to node data, line data and transformer data, and the node data table and line data are formed. table and transformer data table, thus constructing the overall data table of the power grid.

[0034] (2) In the subsystem of power supply capacity calculation based on power data, the improved trial method is selected to calculate the available power supply capacity of the regional p...

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Abstract

Disclosed is a system for improving local electric network power supply ability analysis and providing entire process online monitoring. The system comprises a sub-system receiving original power data in targeted areas, wherein the sub-system classifies the original power data according to node data, line data and transformer data; a sub-system computing power supply capability according to power data, wherein the sub-system uses the improved trial-and-error method based on repeated trends to compute the power supply capability of the local electric network. The computing process comprises that a critical point is obtained under a predetermined operation mode and a load growth mode, a limited condition exactly at the critical point is effective, a threshold crossing occurs when load increases over the critical point, the critical point corresponds to the maximum power supply capability of the local electric network, and the available power supply capability is the difference between the maximum power supply capability and the present interlocal transmission load. The system also comprises an aid decision-making sub-system evaluating the power supply capability of the targeted areas according to computed results, wherein the sub-system provides detailed parameters of weak devices with threshold crossing priority in operation, thereby performing an alarm mechanism.

Description

technical field [0001] The invention belongs to an electric power auxiliary system, and specifically analyzes the power supply capacity of a grid and provides an electric auxiliary system for real-time monitoring of the whole process. Background technique [0002] The available power supply capacity refers to: on the basis of the existing power supply, the remaining power supply capacity available for use in the actual physical power supply network. The concept of available power supply capacity is very similar to that of available transmission capacity, except that the former is used in the calculation of distribution network power supply, while the latter is applicable to transmission network. The available power supply capacity can be used as an index to measure the safe and reliable operation of the power grid. When the available power supply capacity is too small, the power grid is in a full-load power supply state, and operators need to pay more attention. At the same...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 王峰洲冯振保李庚银姬哲李忠良牛子华
Owner STATE GRID CORP OF CHINA
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