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Snowflake grid type grid construction method suitable for urban medium voltage distribution networks

A grid construction and distribution network technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as invalid connection, complicated connection, unreasonable grid structure segmentation, etc., to achieve optimal asset efficiency, Easy to master, the effect of the target grid structure science

Active Publication Date: 2016-02-03
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology

However, due to the characteristics of randomness and dispersal of users, when users access the medium-voltage distribution network, there will be situations such as unreasonable segmentation of the grid structure, complicated connections, and invalid connections.

Method used

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  • Snowflake grid type grid construction method suitable for urban medium voltage distribution networks
  • Snowflake grid type grid construction method suitable for urban medium voltage distribution networks
  • Snowflake grid type grid construction method suitable for urban medium voltage distribution networks

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Embodiment Construction

[0027] The method for constructing a snowflake grid structure suitable for urban medium-voltage distribution networks provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] like image 3 As shown, the snowflake grid construction method suitable for urban medium-voltage distribution network provided by the present invention includes the following steps in order:

[0029] Step 1) Select the equipment for constructing the snowflake grid of the 10kV medium voltage distribution network:

[0030] The 10kV medium-voltage distribution network is composed of 10kV power distribution devices of high-voltage substations, ring network units, distribution stations, overhead lines or cable lines, etc. The ring network nodes adopt ring network cabinets, box-type substations, and power distribution rooms; ring network The cabinet and box-type substation adopt single busbar wiring, the power distribut...

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Abstract

The invention relates to a snowflake grid type grid construction method suitable for urban medium voltage distribution networks. The method comprises the following steps: selecting equipment of a snowflake grid type grid for constructing the 10kV medium voltage distribution networks; constructing a main gird of the snowflake grid type grid consisting of a feeder line cluster; connecting the equipment on the main grid; and constructing a load transfer passage to form the snowflake grid type grid. The method has the effects that each feeder line in the target grid structure formed by adopting the method is reasonably segmented and contacted, has automatic detection, isolation and network reconstruction for failures and self-healing capacity of power restoration, and can meet the power supply requirement of various types of users, so that the utilization efficiency of power distribution equipment is improved, optimal allocation of resources and optimal capital efficiency are realized, the benefit efficiency of the grid is fully developed, and thus the target grid structure is more scientific and complete. The method is easy to master and operate, simple and clear, and is convenient for actual operators to master skillfully.

Description

technical field [0001] The invention belongs to the technical field of medium-voltage distribution networks, and in particular relates to a method for constructing a snowflake grid structure suitable for urban medium-voltage distribution networks. Background technique [0002] The medium-voltage lines of urban power grids generally adopt the form of cable erection. Typical grid structures include single-ring network and double-ring network. The single-ring network and double-ring network are introduced as follows. [0003] Cable single ring network such as figure 1 As shown, the ring network points are generally ring network cabinets, box-type stations or ring network distribution stations. Since each ring network point has two load switches (or circuit breakers E), it can isolate any section (that is, two substations A, Between B) line failure, so that the user's power outage time is greatly shortened, only when the terminal transformer (single configuration) fails, the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02H7/22H02H7/28
Inventor 王哲翟玮罗凤章王浩鸣徐晶刘聪徐科迟福建李桂鑫刘梦璇
Owner STATE GRID TIANJIN ELECTRIC POWER
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