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Power grid model splicing method for relay protection multistage setting calculation and system thereof

A power grid model splicing, setting calculation technology, applied in the direction of calculation, electrical components, circuit devices, etc., can solve problems such as model inconsistency, equipment duplication, equipment naming inconsistency, etc., to reduce requirements, avoid splicing errors, and improve splicing speed and accuracy Effect

Inactive Publication Date: 2014-01-22
STATE GRID ANHUI ELECTRIC POWER CO LTD +1
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Problems solved by technology

Therefore, if the model of the whole network is spliced ​​with the busbar as the boundary model, there will be problems such as model inconsistency, equipment naming inconsistency, and equipment duplication in the upper and lower power grids. It is necessary to split the model, which increases the complexity and calculation of splicing

Method used

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  • Power grid model splicing method for relay protection multistage setting calculation and system thereof
  • Power grid model splicing method for relay protection multistage setting calculation and system thereof

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Embodiment Construction

[0022] like figure 1 , 2 As shown, a power grid model splicing method for multi-level setting calculation of relay protection, the method uses the main transformer high-voltage side outgoing line as the boundary model to splice the power grid model of the whole network, and specifically includes the following steps:

[0023] S1. The information collection module 1 obtains the information on the high-voltage side of the main transformer of the power grid model at all levels in real time through the system soft bus, and classifies and caches it. The outgoing line of the high-voltage side of the main transformer is used as the boundary of splicing, and all the boundaries form splicing points. Set, store the set of splicing points in the loop memory 2.

[0024] S2. The splicing identification module 3 obtains the information of each boundary in the splicing point set from the circular memory 2, and deletes all the components below the boundary in the upper-level grid model, so th...

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Abstract

The invention provides a power grid model splicing method for relay protection multistage setting calculation and a system thereof, and according to the method, the power grid model splicing for whole network with the high-voltage side outlet wire of a main transformer is used as a boundary model. The invention further provides a power grid model splicing system for the relay protection multistage setting calculation. The high-voltage side outlet wire of the main transformer is used as the splicing boundary place, so that the demand to the model consistency is reduced, the splicing error due to different modeling of buses in superior and subordinate power grids is avoided, the model splitting and splicing operation quantity is largely decreased, and the smooth splicing is guaranteed.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a grid model splicing method and system for multi-level setting calculation of relay protection. [0002] Background technique [0003] Power grid model splicing uses a series of methods such as unified equipment naming conventions, boundary grid analysis, model splitting, and model splicing to effectively synthesize each model to form a complete network-wide model. Power grid model splicing provides powerful data support for integrated setting calculation work under large operating conditions, and is of great significance for considering the correct action of relay protection in the whole network. [0004] However, the actual power grid has the characteristics of wide-area distribution, massive parameters, and complex models. Over the years, the production management of electric power has naturally formed a set of "hierarchical management, hierarchical control, and distri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F17/50
CPCY02E60/00
Inventor 谢民孙月琴王同文程晓平王栋王海港胡晓飞黄太贵赵晓春王玉红
Owner STATE GRID ANHUI ELECTRIC POWER CO LTD
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