An active distribution network local power coordination control system and method

Abstract

The invention proposes an active distribution network local power coordination control system and method. The invention belongs to the technical field of active distribution network local power coordination control. The invention is based on local power coordination based on the long-term economic optimization operation of the active distribution network. The control system has a short adjustment cycle, which can not only provide effective dynamic response to load changes, but also enable the system to meet the overall optimized economic operation; this invention fully considers the distributed power generation and energy storage in the active distribution network under different load changes. The coordinated control strategy can adaptively adjust the output of distributed power supplies and grid-side power supplies, fully utilize the power generation capacity of distributed power supplies to enable efficient and economical operation, and at the same time reasonably regulate the remaining energy in the system; the method of the present invention can quickly and accurately Solve the proportional coefficient of load changes between distributed power supplies and grid-side power supplies, achieve rapid response of local systems to load changes, and ensure safe and economical operation of the system.

Description

technical field [0001] The invention belongs to the technical field of active distribution network local power coordination control, and in particular relates to an active distribution network local power coordination control system and method. Background technique [0002] With the rapid development of distributed generation, its high penetration access brings many challenges to the traditional distribution network, such as power quality, power flow planning, relay protection, etc. Active distribution network aims to use distributed power generation, energy storage, controllable load, etc. in the distribution structure as control means to maintain the power quality of the distribution network, optimize the distribution network flow, and ensure the safe and stable operation of the distribution network. Therefore, the research on power coordination control of active distribution network is particularly important. [0003] At present, most of the research on active distributi...

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Problems solved by technology

However, due to the large amount of distributed generation (DG) access in the distribution network under high penetration, coupled with a large number of energy storage and controllable loads, this global power optimization control will undoubtedly involve the processing of massive data, so its The control cycle is bound to be very long. If there is an unplanned load change in the local distribution network between the two control cycles, the long-term optimal control results will not be able to respond well to the load change in the system. Research on the coordinated control of local power in the active distribution network; the existing research on the coordinated control of local power in the active distribution network is not too much, and the control methods have limitations, and it is impossible to achieve adaptive adjustment under the influence of multiple factors The network side and each DG balance the proportion of load changes in the local network

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