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Active power distribution network optimal scheduling method considering dynamic network reconstruction

A technology for active distribution network and optimal scheduling, applied in AC networks with different sources of the same frequency, climate change adaptation, parallel feeding arrangements for a single network, etc., and can solve problems such as no mathematical expression is given.

Inactive Publication Date: 2019-07-16
HUAZHONG UNIV OF SCI & TECH +1
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Problems solved by technology

In addition, most of the existing literature on the radiation structure constraints of the active distribution network adopts the exhaustive method and does not give a strict mathematical expression

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  • Active power distribution network optimal scheduling method considering dynamic network reconstruction
  • Active power distribution network optimal scheduling method considering dynamic network reconstruction
  • Active power distribution network optimal scheduling method considering dynamic network reconstruction

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Embodiment Construction

[0085] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further 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 present invention.

[0086] An optimal scheduling strategy for an active distribution network considering dynamic network reconfiguration in an embodiment of the present invention, the calculation of which includes the following steps:

[0087] (1) Obtain all distributed power parameters in the active distribution network as shown in Table 1, and the 24h distribution curves of distributed power and loads are shown in figure 1 As shown, the parameters of the active distribution grid are shown in Table 2, and the topology is as follows figure 2 As shown, the node load data of the active distribution network is shown in...

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Abstract

The invention discloses an active power distribution network optimal scheduling method considering dynamic network reconstruction. The method comprises the steps of (1) acquiring active power distribution network parameters to obtain constraint conditions of a power flow equation of an active power distribution network; (2) by considering the dynamic network reconstruction, correcting the constraint conditions of the power flow equation of the active power distribution network; (3) obtaining constraint conditions of a radiation structure of the the active power distribution network according to the radiation structure of the active power distribution network; (4) by taking the comprehensive operation cost of the active power distribution network as a target function, building an active power distribution network optimal scheduling model according to various constraint conditions; (5) carrying out convex relaxation on non-convex constraint conditions in an original model, and carrying out linearization on nonlinear constraint conditions; and (6) solving a converted model to obtain an active power distribution network optimal dispatching scheme. According to the method, controllableresources of the active power distribution network are fully considered, so that the operation economy of the active power distribution network is improved, and the problems of difficult access of large-scale distributed power supplies to the active power distribution network and voltage rise are solved.

Description

technical field [0001] The invention belongs to the technical field of optimal operation of active distribution networks, and more specifically relates to an optimal scheduling method for active distribution networks considering dynamic network reconfiguration. Background technique [0002] In recent years, in order to cope with climate change, solve the energy crisis and promote energy conservation and emission reduction, vigorously developing renewable energy such as wind power and solar power has become a consensus and an important means at home and abroad. The country will continue to vigorously develop wind power and solar power, and realize distributed development and local consumption of renewable energy through various measures. As renewable energy is connected to the distribution network in the form of distributed generation on a large scale, in some local distribution networks, the penetration rate of distributed power exceeds 100% in some periods of time, while so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/48H02J3/50H02J3/06
CPCH02J3/06H02J3/48H02J3/50Y02A30/60
Inventor 李超苗世洪张迪李姚旺丁津津骆晨陈洪波
Owner HUAZHONG UNIV OF SCI & TECH
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