关键词: 供热改造, 调峰, 300 MW机组, 可再生能源消纳

Abstract: In the Three-North Areas of China, due to the large amount of installed capacity of wind power and the high proportion of heating units, there has been outstanding conflict between the operations of wind power generators and heating units during the heating season. Considering the large scale of the heating units to be renovated and their future capacity growth, it is of great significance to study the peak-load regulation capability of the heating retrofit unit to promote the sound development of renewable energy absorption and thermoelectric industry. In this paper, the peak-load regulation performance analysis on the retrofit of several mainstream heating units, such as extraction steam retrofit units, high back pressure heating units and coupled heat pump heating units are carried out. The peak-load regulation capability of 300 MW class heating retrofit unit is calculated in the case studies. The optimization of different types of unit heating retrofit is then explored. The case studies show that, the corresponding optimization strategies can effectively improve the system peak-load regulation capability and promote renewable energy absorption with the demand of sufficient heating supply satisfied simultaneously.

Key words: unit heating retrofit, peak-load, 300 MW unit, renewable energy absorption