Affiliation:
1. Harbin Engineering University
2. Harbin Institute of Technology
3. Beijing Institute of Control and Electronic Technology
Abstract
Frequency is an indicator of the balance between electricity generation and consumption. Maintaining the frequency stability is the first of all for a stable operation of power system. After analyzing the traditional power system’s primary frequency control, secondary frequency control and tertiary frequency control, the electric heater, water heater, refrigerator, air conditioner and other domestic electric appliances are tried to use to improve the frequency quality as the decentralized intelligent loads based on the thought of “demand following supply”. The statistics of the overall power of different domestic electric appliances of several countries are given. It indicates that the domestic electric appliances can be used to improve the frequency quality from the overall power. The operating characteristics and control requirements of different domestic electric appliances are analyzed. Their control strategies are put forward and model of decentralized intelligent loads is constructed. A series of questions of technology, economic and policy that need to be solved while utilizing the decentralized intelligent loads to control the power system frequency are put forward.
Publisher
Trans Tech Publications, Ltd.
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