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Double-loop network distribution system

A technology of power distribution system and double ring network, applied in the field of power distribution network, can solve the problems of waste of resources, single power supply in substations, loss of voltage in the whole station, etc.

Inactive Publication Date: 2015-08-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] At present, the domestic 110KV power grid mainly has chain, radial, hand-in-hand and T-shaped wiring methods. Among them, T-shaped wiring is divided into single T, double T and 3T. The existing 110KV power grid is mainly double-circuit chained. There are the following deficiencies: 1. There are many devices in the substation, and the operation and maintenance are complicated; 2. Some lines are backup lines, resulting in waste of resources; 3. The single power supply of the substation has the risk of voltage loss in the whole station and low reliability

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] In order to solve the problem of low reliability of the existing power grid, the present invention provides a figure 1 The double-ring power distribution system shown includes the first substation, the second substation, two main circuits formed by the output ends of the first substation and the second substation, and at least one set of tie switches 4 installed on each main circuit. A first main loop 5 is formed between a substation bus A1 and a second substation bus A11, and a second main loop 6 is formed between the first substation bus B2 and the second substation bus B10; the first substation bus A1 and the second substation A circuit breaker 3 is set between the bus A11 and the first main circuit 5, and a circuit breaker 3 is set between the first substation bus B2 and the second substation bus B10 and the second main cir...

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Abstract

The present invention discloses a double-loop network distribution system which comprises a first substation, a second substation, two main loops formed at the output ends of the first substation and the second substation, and at least one set of contact switch installed at each of the main loops. A first main loop is formed between a first substation bus A and a second substation bus A, and a second main loop is formed between a first substation bus B and a second substation bus B. By using the contact switches, the first main loop and the second main loop are connected to the first substation and the second substation through circuit breakers. The contact switches are connected to a load. Through arranging multiple sets of contact switches, the grade power supply can be realized, through controlling the circuit breakers at the bus ends of the first substation and the second substation, the whole loop can be powered separately, the power cut of a whole network caused by the power failure of one set of substation is avoided, and the reliability is improved.

Description

technical field [0001] The invention relates to the technical field of distribution networks, in particular to a double-ring network distribution system. Background technique [0002] Grid planning in power grid planning has a significant impact on the high-quality, safe, and economical operation of the power system, and scientific and effective planning schemes are its foundation. The planning of 110kV grid structure should start with the investigation and study of the current situation of the high-voltage grid in the planning area, and use the results of load distribution prediction as the basic data to rationally arrange the site of high-voltage substations, solve the weak links of the grid, optimize the grid structure, and improve the power supply capacity and adaptability of the grid and level of automation. Planning should be combined with short-term and long-term, and new construction and renovation, so as to realize the standardization of power grid wiring and facil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/24H02B1/20
CPCH02J3/00
Inventor 刘孝刚常华段正玉梅晓辉杨俊广赵海洲宋鹰杨海跃高冰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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