利用建筑物与热网热动态特性提高热电联产机组调峰能力

发布时间：2018-04-03 01:30

本文选题：热电联合　切入点：热动态特性　出处：《电力系统自动化》2017年15期

【摘要】：提出了综合考虑建筑物与集中供热管网热动态特性的热电联合运行模式,解决了因传统"以热定电"运行模式而导致的热电联产机组调峰能力不足的问题。详细介绍了基于建筑物与热网热动态特性的热电联合系统的构成方案;着重对比分析了考虑建筑物与热网热动态特性前后的热电联产机组运行点的变化情况,在此基础上明确了其能够提高机组调峰能力的机理;给出了综合考虑建筑物与热网热动态特性的热电联合调度模型。算例结果表明,所述综合模型可以显著提高机组的上调节和下调节容量,其效果优于仅考虑建筑物或者热网单一环节热动态特性的模型。进一步,将系统源侧"热电耦合"特性扩展到荷侧,利用系统"源荷协调控制"实现了机组"热电解耦"。
[Abstract]:The combined operation mode of heat and electricity which considers the thermal dynamic characteristics of buildings and central heating networks is put forward, which solves the problem of insufficient peak-shaving capacity of cogeneration units caused by the traditional operation mode of "fixing power by heat".This paper introduces in detail the constitution scheme of the combined thermal power system based on the thermal dynamic characteristics of building and heat network, and emphatically analyzes the change of the operation point of the cogeneration unit before and after the consideration of the thermal dynamic characteristics of the building and the heat network.On this basis, the mechanism of its ability to improve the peak-shaving capacity of the unit is clarified, and a combined thermal power dispatching model considering the thermal dynamic characteristics of the building and heat network is presented.The numerical results show that the proposed model can significantly improve the capacity of upper and lower regulation, and its effect is better than that of the model which only considers the thermal dynamic characteristics of single link of building or heat network.Furthermore, the "thermoelectric coupling" of the source side of the system is extended to the charging side, and the "thermoelectric decoupling" of the unit is realized by using the "source load coordination control" of the system.
【作者单位】：大连理工大学电气工程学院;国网辽宁省电力有限公司;
【基金】：国家自然科学基金青年科学基金资助项目(51607021)~~
【分类号】：TM621;TM73

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