Method for building equivalent grounding network computation model

A technology for calculating models and ground grids, which is applied in the direction of ground resistance measurement, etc.
CN101900765AInactive Publication Date: 2010-12-01SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
0 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI MUNICIPAL ELECTRIC POWER CO
Publication Date
2010-12-01
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for building an equivalent grounding network computation model, comprising the following steps of: selecting a position of a current electrode, then respectively carrying out simulated computation on potential distribution of a grounding network when the current electrode is absent and existent by using a point matching moment method according to the actual shape of a grounding body, and further building the equivalent ground network computation model which can be suitable for short-distance measurement of a grounding resistor. The method for building the equivalent ground network computation model carries out summarization and conclusion on the potential distribution rule of the grounding network, builds the equivalent grounding network computation model which is suitable for the short-distance measurement of the grounding resistor and has an important engineering practical value.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of establishing calculation models of equivalent ground grids of power generation and substations in power systems, in particular to a method for establishing equivalent ground grid calculation models when using a short-distance measurement method to measure the grounding resistance of substation ground grids. Background technique

[0002] At present, the commonly used grounding resistance measurement methods in the power sector are mainly the potential drop measurement theory developed in the 1960s and its derived compensation methods such as the 0.618 method and the 30-degree angle method. However, with the increase of the scale of the ground network, the workload of measuring the ground resistance by using the 0.618 method and the 30-degree angle method is increasing, and the interference problem is also becoming more and more serious. Therefore, there is an urgent need for a measurement method that can shorten the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More