Distribution network coordination control system and control method taking account of distributed power

Abstract

A distributed power distribution network coordination control system, including a main control, 1 analog display screen, 13 sets of transformers, 9 sets of distributed switch control terminals, 2 sets of distributed power generation device control terminals, 2 sets of Distributed energy storage device control terminal, 2 sets of distributed power generation devices, 2 sets of three-phase inverters, 2 sets of energy storage devices, 2 sets of charging / inverting devices. The invention enables the power distribution system to have the ability to coordinate the running state of the distributed power sources in the network, and further realize the ability of maximizing the utilization rate of clean energy in the network. Coordinate and optimize the operating status of distributed power sources to achieve a load tracking rate of clean energy of more than 70%, and at the same time avoid the impact of distributed power sources on the distribution network caused by arbitrary grid connection / disintegration; when extreme accidents occur in the distribution network, the distribution network In the case of "island operation" in the power grid, coordinate the maximum power operation of distributed power sources and energy storage devices in the network to ensure the normal power supply of important loads in the network, and solve the power supply problem of the distribution network in extreme accidents.

Description

technical field [0001] The invention relates to the research on the coordinated control system of the distribution network including distributed power sources, in particular to the coordinated control system and control method of multiple distributed power sources when the distribution network operates in an isolated manner. Background technique [0002] With the development of the national economy, the demand for electricity has grown rapidly, and the cost of distributed power generation equipment such as solar power, wind power, and micro gas turbine power has decreased. A large number of distributed power generation equipment has poured into the distribution network, which actively supports the operation of the distribution network. effect. However, the extensive use of distributed power sources has also changed the structure of the distribution network from radial power supply to a new model in which substation power supply is the mainstay and multiple power sources coe...

AI Technical Summary

Problems solved by technology

[0007] With the expansion of the scale and capacity of distributed power generation and the increase of its proportion in the power generation system, when the system connection line fails, if the capacity of distributed power generation and the However, it only makes it simple to connect / split from the distribution network, which not only prevents the advantages of distributed power from being fully utilized, but also greatly affects the safety and reliability of the distribution network. Impact

Although these strategies can ensure the safety of the power system to the greatest extent, they restrict or even destroy the normal operation of distributed power sources to a certain extent, seriously restricting the development and utilization of clean energy.

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