电力系统短期运行充裕性评估及决策

发布时间：2018-01-16 05:02

本文关键词：电力系统短期运行充裕性评估及决策　出处：《电网技术》2014年04期 　论文类型：期刊论文

【摘要】：大量随机波动性电源接入给电力系统运行充裕性带来了显著影响,如何准确评估运行充裕性以及基于运行充裕性进行调度决策是新能源电力系统运行面临的新问题。以风电为例,同时考虑来自电源和负荷的双侧随机因素,将传统可靠性指标改进推广到短期运行充裕性评估中,并在此基础上提出了一个新的充裕性指标,对指标的数学含义和计算方法进行了讨论。以含风电电力系统的机组组合为例,研究所提指标在短期运行充裕性决策中的应用。算例首先对RBTS系统进行了运行充裕性评估,其次给出了所提充裕性指标约束下的机组组合方案。结果表明,所提指标能够更准确地刻画随机因素对系统运行充裕性的影响,基于充裕性指标的机组组合决策能够给出不同充裕性水平下的机组启停方案和出力计划以及对应的系统充裕性量化值。研究成果为随机波动性电源大规模接入电力系统的短期运行充裕性问题提供了一套评估指标和评估方法。
[Abstract]:A large number of random fluctuating power supply connections have a significant impact on the power system operational adequacy. It is a new problem that how to evaluate the adequacy of operation and how to make dispatching decision based on the adequacy of operation. Taking wind power as an example, the bilateral random factors from power supply and load are considered at the same time. The traditional reliability index is extended to the short-term operation adequacy evaluation, and a new adequacy index is proposed. The mathematical meaning and calculation method of the index are discussed. Taking the unit combination with wind power system as an example. The application of the proposed index in short-term operational adequacy decision is studied. First of all, the operational adequacy of RBTS system is evaluated. The results show that the proposed index can more accurately describe the impact of random factors on the adequacy of the system. On the basis of adequacy index, the decision making of unit combination can give the starting and stopping scheme and power generation plan of units with different adequacy levels and the corresponding quantization value of system adequacy. The research result is random fluctuating power supply with large scale access power. The short-term operational adequacy of the force system provides a set of evaluation indicators and methods.
【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】：国家科技支撑计划项目(2013BAA02B01) 国家自然科学基金项目(51177043) 中央高校基本科研业务费专项资金项目(11QX45)~~
【分类号】：TM732
【正文快照】： 0引言近年来,随着能源结构的变化,以风能为代表的可再生能源大量接入电网。风电出力具有随机波动性、难以准确预测,以及较弱的调控性等特点,大规模风电接入给电力系统运行充裕性带来了很大影响。电力系统充裕性评估是预测、度量电力系统运行风险的有效方法,它贯穿从长期规划到

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