Alternating current and direct current hybrid power distribution network optimization operation method considering multiple time scales

Abstract

An alternating current and direct current hybrid power distribution network optimization operation method considering multiple time scales comprises the following steps: 1, establishing in a day-ahead optimization stage, an objective function and constraint conditions of an ESS-VSC day-ahead optimization model of an alternating current and direct current hybrid power distribution network, and obtaining the optimization results of network power flow, energy storage and VSC operation power through solving; 2, judging whether a fault occurs under the regulation and control of the day-ahead optimization stage, namely, whether voltage out-of-limit occurs, when the AC / DC hybrid power distribution network has a fault, adding the FDS, performing cone optimization on the constraint condition of the FDS to form a new cone optimization model, performing solving to obtain a new network power flow and FDS and VSC operation power, and controlling the system rapidly in real time through the VSC and the FDS. According to the invention, day-ahead-real-time multi-time scale operation optimization control of the AC / DC power distribution system is realized, so that the AC / DC power distribution system can flexibly deal with emergencies.

Description

technical field [0001] The invention belongs to the technical field of distribution network optimization operation, and relates to an optimal operation method of an AC-DC hybrid distribution network, in particular to an optimal operation method of an AC-DC hybrid distribution network considering multiple time scales. Background technique [0002] At present, the development of distributed power supply and the access of electric vehicles have promoted the development of DC distribution network, but the traditional AC distribution network is still the main form due to its relatively complete facilities and low investment costs. The development of DC hybrid distribution network is the main trend, and the research on the operation optimization technology of AC and DC hybrid distribution network is one of the current research hotspots. [0003] Traditional voltage control and operation optimization equipment include capacitors, on-load tap taps, tie switches, etc., but these are ...

AI Technical Summary

Problems solved by technology

In the past, most of the optimization of the AC-DC hybrid distribution network was considered to be optimized in advance, and there are few ways to deal with emergencies, and a power system failure may cause serious losses. Therefore, how to propose a method that considers multi-time A standard AC-DC hybrid distribution network optimization operation method, which can perform real-time and rapid control of the AC-DC hybrid distribution network, is a technical problem to be solved urgently by those skilled in the art

[0005] After searching, no publications of prior art identical or similar to the present invention were found

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