Active reconfiguration strategy of distribution network and preventing control method thereof

Abstract

The present invention relates to a safe operation and prevention control technique of an active distribution network, wherein preventive control is performed through optimizing a network structure for satisfying a safe margin requirement in operation of the distribution network, thereby effectively improving operation reliability of the distribution network; and simultaneously operation and short-term planning of the distribution network are guided for realizing higher economic benefit and social benefit. For this purpose, the technical solution adopted in the active reconfiguration strategy of the invention is characterized in that the active reconfiguration strategy of the distribution network and the preventing control method comprise the steps of: firstly, establishing a maximal power supply capability evaluating index which is adapted for the active distribution network; when the maximal power supply capability index of the distribution network is lower than a system safe guard line, performing active reconfiguration of the distribution network for achieving multiple targets of improving the maximal power supply capability index and minimizing number of times of operating a network reconfiguration switch; and if the maximal power supply capability index of the distribution network in the current operation manner is lower than a preset safe guard line, starting an active reconfiguration module for performing network optimizing reconfiguration. The active reconfiguration strategy of the distribution network and the preventing control method according to the invention are mainly applied for safe operation and preventing control of the distribution network.

Description

technical field [0001] The invention relates to the safe operation and preventive control technology of an active distribution network, and specifically relates to an active reconfiguration strategy of a distribution network and a preventive control system thereof. Background technique [0002] In recent years, with the massive access of distributed power sources and various new types of power loads (such as electric vehicles, etc.) at the distribution network level, the distribution network is facing an unprecedented external environment of uncertainty. As a result, the planning and operation of distribution networks have become increasingly complex; the operation and fault handling of distribution network protection devices have also brought a certain degree of impact, bringing unprecedented challenges to the safe operation of distribution networks [1- 2]. [0003] However, with the continuous improvement of distribution management and distribution automation systems, the...

AI Technical Summary

Problems solved by technology

[0006] Whether it is network optimization and reconfiguration under normal operating conditions [9-13] or fault recovery and reconfiguration under emergency conditions [14-17], it is often passive and cannot provide sufficient early warning for system operation security. Does not meet the development needs of today's active distribution network;

[0007] The current distribution network reconstruction goal is single, and it cannot fully take into account a large number of external uncertain factors during the operation of the distribution network, which in turn leads to potential safety hazards in the operation of the system

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