One is the local control technology, which uses the local detection information to control, such as voltage and current protection, reactive power compensation. The advantage of the local control method is that the control response speed is fast, in tens of milliseconds.

Secondly, centralized control of flat cable technology is to control the main station centralized processing of distribution terminal measurement information, control decision-making, remote control distribution equipment. The advantage of centralized control technology is that it can make use of global information and has perfect control function, but the disadvantage of centralized control technology is that the response speed of control is slow and it is in the minute level; it needs to set up communication channels and main stations, and the investment is large.

Third, distributed control technology refers to the coordinated control of measurement and control information exchange between distribution terminals. The advantage of distributed control technology is that the control response speed is faster, at the level of 100 ms.

Distributed control flat cable is especially suitable for distribution network. Because any control operation of distributed control has a scope, and the vast majority of control scope is a feeder, the number of control nodes will not be too many, the design of control system and algorithm is relatively simple. The response speed of most distribution network control applications is not less than 100 ms.

Distributed control has been extensively studied at home and abroad. There have been reports on the application of distributed control in fault isolation, relay protection and voltage control of distribution network. However, it is still not perfect and can not form a perfect technical system.