A plug-and-play method for connecting distributed power generation to distribution network

Abstract

The invention provides a method for achieving plug and play of distributed resources after power distribution network connection, and belongs to the technical field of power distribution networks. After a power distribution network master station monitoring system receives real-time information that the distributed resources are connected to a power distribution network, balance analysis is conducted on the power of a whole power distribution network system; if the power of the system is in a balanced state, normal operation of the power distribution network is kept; if the sum of the output power of the distributed resources and the output power of a power distributed network power supply is lower than the power of an important load, the output power of the power distribution network power supply is increased, and power balance of the system and plug and play of the distributed resources are achieved; if the sum of the output power of the distributed resources and the output power of the power distributed network power supply is higher than the power of the important load, flexible loads are input to regulate power balance of the whole system and plug and play of the distributed resources; and if power balance of the whole system cannot be met after all the flexible loads are input, power balance of the system and plug and play of the distributed resources are achieved by reducing the output power of the power distribution network power supply.

Description

technical field [0001] The invention relates to a plug-and-play method for connecting distributed power sources to a distribution network, and belongs to the technical field of distribution networks. Background technique [0002] With the continuous progress of new materials and new technologies and the country's increasing emphasis on environmental protection, distributed power (DR, Distributed Resources) based on clean and renewable energy is developing rapidly. DR refers to making full use of various forms of renewable energy such as solar energy, wind energy, etc. for power generation or energy storage, and electric vehicles for electric energy storage. The layout is scattered and the capacity is relatively small. While meeting the local load consumption, The margin can be imported into the distribution network. Since DR often has the characteristics of randomness, volatility, and variability, the difference in capacity and location of its access to the distribution net...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the difficulty of DR accessing the distribution network at present, improve the penetration rate of DR in the distribution network and the convenience of access, reduce the operation and maintenance workload caused by DR accessing the distribution network, and make up for the existing technology In order to promote the large-scale application of DR, the present invention provides a plug-and-play method for connecting distributed power sources to the distribution network to solve the problem of plug-and-play when the distributed power sources are connected to the distribution network in the prior art. ready to use

Images