Distribution network flexible interconnection coordination control method and device

Abstract

The invention discloses a distribution network flexible interconnection coordination control method and device. The method comprises the steps of AC port operation control of a flexible interconnection device, AC-DC power grid multi-element source load control and AC-DC co-construction area coordination control. The AC port operation control of the flexible interconnection device comprises AC port steady state control and AC power grid fault load conversion control, and the AC power grid fault load conversion control is preferentially carried out; the multi-element source load control of the alternating current and direct current power grid is that partition autonomous control is carried out on an alternating current source load and a direct current source load under the condition that a novel direct current load is accessed to a direct current side, and the novel direct current load comprises a photovoltaic pile, an energy storage pile or a charging pile; the AC / DC co-construction area coordination control comprises DC voltage coordination control and converter capacity coordination control. According to the method, the distribution network flexible interconnection system new energy on-site consumption control capability, the source network load storage flexible regulation and control capability and the power distribution network efficient and safe operation capability are improved.

Description

technical field [0001] The invention relates to a flexible AC / DC transmission control method, in particular to a distribution network flexible interconnection coordination control method and device. Background technique [0002] The distribution network undertakes the important tasks of rationally distributing electric energy, serving customers, and ensuring the safe use of electricity for users, and is an indispensable part of the power system. However, there are many problems in the current distribution network, such as irrational structure and limited control means, which restrict the flexibility and reliability of distribution network operation. The current distribution network operation mainly has the following problems: [0003] 1) With the rapid and high-quality development of the national economy and the upgrading of the industrial structure, the unbalanced contradiction between the power demand of the distribution network and the construction of the grid has become...

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Problems solved by technology

[0011] Purpose of the invention: Aiming at the problems caused by a large amount of new energy being connected to the distribution network on site and the development trend of load diversification in the distribution network, the present invention proposes a method and device for coordination and control of flexible interconnection of the distribution network, which improves the novelty of the flexible interconnection system of the distribution network. Capability of local energy consumption and control, flexible regulation and control of source, network, load and storage, and efficient and safe operation of distribution network

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