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Application of Active Disturbance Rejection Control technology in distributed Control System of coal-fired power generation

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4 Author(s)
Huanpao Huang ; Department of Power Station Automation Technology, China Electric Power Research Institute, Beijing 100192, China ; Ling Nie ; Gang Pan ; Ming Xia

Distributed Control System plays a role of “brain” and control center for coal-fired power generation unit. Super critical (SC) and Ultra-super critical (USC) power generation units with large capacity, high parameters, high efficiency have been the key units of coal fired power industry. Reliability and stability of these units are preconditions for safety of large grid. And the automatic control system and control strategy with good performance are the basis for safety and stability of power plant. SC and USC are multi-inputs, multi-outputs system with strong coupling and nonlinearity. Good performance couldn't be achieved by employing conventional PID control technology. This paper first introduces how embedded Active Disturbance Rejection Control algorithm is implemented in DCS. Then, the ADRC coordinated control scheme for Super critical one-through power generation unit is presented. The simulation results obtained from the DCS show that the proposed control scheme can effectively solve problems of strong nonlinearity, uncertainty, coupling, large time delay. And it can improve greatly the control performance of coordinated control system for SC units.

Published in:

Proceedings of the 29th Chinese Control Conference

Date of Conference:

29-31 July 2010