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Power distribution network island dividing method based on minimum user power failure loss

A technology of power failure loss and island division, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of power grid equipment safety, personal safety hidden dangers, and difficulty in ensuring the quality of distributed power supply, achieving low time complexity. Effect

Inactive Publication Date: 2017-08-18
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

However, considering that unplanned islands caused by faults have hidden dangers to the safety of power grid equipment and personal safety, and at the same time it is difficult to guarantee the quality of power supply of distributed power sources after they are separated from the main network, the IEEE929-2000 standard does not allow the emergence of island operation mode

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  • Power distribution network island dividing method based on minimum user power failure loss
  • Power distribution network island dividing method based on minimum user power failure loss
  • Power distribution network island dividing method based on minimum user power failure loss

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Embodiment Construction

[0044] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the invention.

[0045] like figure 1 As shown, a distribution network island division method based on the minimum user power outage loss of the present invention, the steps are as follows:

[0046] Step 10) Construct a simplified model of the distribution network in the power outage area after the fault.

[0047] Step 10) specifically includes: treating transformers, feeder sections and switching elements that may fail in the actual distribution network as structural nodes with a fixed failure rate and zero load; treating user loads as zero failure rate and load The distribution network is transformed into a topological str...

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Abstract

The invention discloses a power distribution network island dividing method based on minimum user power failure loss, and the method comprises the following steps: 10), building a power failure region power distribution network simplifying model after a fault; 20), determining the unit power failure loss functions for different types of users according to the actual conditions of a power failure region; 30), determining the output condition of a distributed power supply at a moment of power failure and estimated power failure time; 40), building an island dividing model which takes the reduction of the power failure loss as the target; 50), searching a feasible region, solving the island dividing model, obtaining an island dividing method, and carrying out the island dividing according to the island dividing method. The method reduces the power failure loss for users within various operation constraints of the power distribution network.

Description

technical field [0001] The invention belongs to the field of distribution network steady-state analysis, and relates to a distribution network island division method, more specifically, to a distribution network island division method based on the minimum power failure loss of users. Background technique [0002] The island operation mode is a new operation mode after the distribution system introduces distributed generation. In this state, power users are only powered by distributed power generation (hereinafter referred to as DG). In this case, rationally planning the access points and access capacity of distributed power generation plays a significant role in reducing power outage losses of distribution network and improving system reliability. However, considering that unplanned islands caused by faults have hidden dangers to the safety of power grid equipment and personal safety, and it is difficult to guarantee the power supply quality of distributed power sources aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/46G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06H02J3/381H02J3/388H02J3/46H02J2203/20Y02E40/70Y04S10/50
Inventor 苏剑刘海涛梁惠施李洋宋杉顾伟聂颖惠
Owner CHINA ELECTRIC POWER RES INST
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