供热机组锅炉储能与热网储能空间时间多尺度分析

发布时间：2018-01-16 11:34

本文关键词：供热机组锅炉储能与热网储能空间时间多尺度分析　出处：《中国电机工程学报》2017年02期 　论文类型：期刊论文

【摘要】：能源互联网的发展使电力系统和热力系统的联系更加紧密,利用热网储能提高供热机组快速变负荷能力成为新的课题。通过小波时间多尺度分析发现,燃料提供的能量和锅炉储能在响应时间上的差异是造成传统炉跟机协调控制中机前压力波动大的主要原因。供热机组可以利用热网储能补偿机组所需能量。分析锅炉和热网储能时间空间特性发现热网储能容量大,但与锅炉储能响应时间接近。以储能时间特性分析为基础,设计供热前馈环节使热网储能在锅炉储能消耗大,但燃料尚未补充能量时发挥作用。仿真实验表明,带供热前馈的协调控制方案下机组能够接受3%Pe/min的变负荷速率,相比1.5%Pe/min速率,可以使AGC(automatic generation control)调节偏差积分减小50%。
[Abstract]:With the development of energy internet, the relationship between power system and thermal system is more and more close. It is a new task to improve the capacity of heat supply unit to change load quickly by using heat network energy storage, which is discovered by wavelet time and multi-scale analysis. The difference in response time between the energy supplied by fuel and boiler energy storage is the main reason for the large fluctuation of pre-machine pressure in the traditional coordinated control of boiler follower. The heat supply unit can use heat network energy storage to compensate for the energy needed by the unit. The energy storage time and space characteristics of boiler and heat network show that the heat network has a large energy storage capacity. But the response time of energy storage is close to that of boiler. Based on the analysis of energy storage time characteristic, the feedforward link of heat supply is designed to make the energy storage in boiler energy storage consume much, but the fuel has not been replenished. The simulation results show that. Under the coordinated control scheme with heating feedforward, the unit can accept the variable load rate of 3 Pe-min, compared with 1.5 Pe-min rate. It can reduce the deviation integral of AGC(automatic generation control by 50%.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);
【基金】：国家重点基础研究发展计划项目(973计划)(2012CB 215203) 中央高校基本科研业务费专项资金(2015XS62)~~
【分类号】：TM621
【正文快照】： 机前压力波动大的主要原因。供热机组可以利用热网储能补偿机组所需能量。分析锅炉和热网储能时间空间特性发现热网储能容量大,但与锅炉储能响应时间接近。以储能时间特性分析为基础,设计供热前馈环节使热网储能在锅炉储能消耗大,但燃料尚未补充能量时发挥作用。仿真实验表明,

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