Response time for primary frequency control of hydroelectric generating unit

Response time for primary frequency control of hydroelectric generating unit
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水轮发电机组一次变频控制响应时间

DOI:
10.1016/j.ijepes.2015.07.003
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发表时间:
2016
影响因子:
5.2
通讯作者:
Per Norrlund
Per Norrlund
中科院分区:
工程技术2区
文献类型:
--
作者:
Weijia Yang;Ji;ong Yang;Wencheng Guo;Per Norrlund

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在评价水轮发电机组一次调频电能质量时,电能响应时间是电网关注的主要指标。本文的目的是建立一个合适的模型进行可靠的仿真和研究的一般规则,控制功率响应时间。以中国和瑞典两座大型调压室水电站为例,进行了一次调频阶跃试验的仿真研究,并利用现场实测数据对仿真结果进行了验证。本文从解析的角度推导了以调速器参数为主要变量的导叶开度响应的时域解和响应时间公式。然后从调节系统和水路系统两个方面分析了造成功率响应时间与解析开阀响应时间差的因素。计算结果表明,该公式可以帮助预测电站的功率响应,并为参数整定提供灵活的指导,特别是对于没有调压室的水电站。
For evaluating the power quality in primary frequency control for hydroelectric generating units, the power response time is an indicator which is of main concern to the power grid. The aim of this paper is to build a suitable model for conducting reliable simulation and to investigate the general rules for controlling the power response time. Two huge hydropower plants with surge tank from China and Sweden are applied in the simulation of a step test of primary frequency control, and the result is validated with data from full scale measurements. From the analytical aspect, this paper deduces a time domain solution for guide vane opening response and a response time formula, of which the main variables are governor parameters. Then the factors which cause the time difference, between the power response time and the analytical response time of opening, are investigated from aspects of both regulation and water way system. It is demonstrated that the formula can help to predict the power response and supply a flexible guidance of parameter tuning, especially for a hydropower plant without surge tank.
DOI: --
发表时间: 2009
期刊: Journal of Hydroelectric Engineering
影响因子: --
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