含自备电厂的钢铁企业孤网频率稳定控制策略

doi:10.3969/j.issn.1000-7229.2015.12.017

电力建设 ›› 2015, Vol. 36 ›› Issue (12): 108-115.doi: 10.3969/j.issn.1000-7229.2015.12.017

含自备电厂的钢铁企业孤网频率稳定控制策略

刘皓明1，姚霜晨1，袁小慧1，李强2，吕振华2

1. 河海大学能源与电气学院，南京市 211100；2. 江苏省电力公司电力科学研究院，南京市 211103

出版日期:2015-12-01
作者简介:刘皓明（1977），男，博士，副教授，主要研究方向为智能配电网、微电网和电力市场；姚霜晨（1990），女，硕士研究生，主要研究方向为电力需求侧管理；袁小慧（1991），女，硕士研究生，主要研究方向为智能配电网和分布式发电；李强（1980），男，博士，高级工程师，研究方向为新能源与微网；吕振华（1988），男，硕士，工程师，研究方向为新能源发电并网运行。
基金资助:
国家自然科学基金项目（51207044）。

Frequency Stability Control Strategy for Isolated Power System of Steel Enterprise with Autonomous Power Plant

LIU Haoming1, YAO Shuangchen1, YUAN Xiaohui1, LI Qiang2, LYU Zhenhua2

1. College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China；2. Jiangsu Electric Power Research Institute, Nanjing 211103, China

Online:2015-12-01
Supported by:
Project supported by the National Natural Science Foundation of China （51207044）.

摘要/Abstract

摘要：

介绍了钢铁企业供电系统的结构特性，建立了自备电厂火电机组调速系统模型和负荷模型，其中负荷模型分为常规负荷模型和冲击负荷模型。针对孤网运行方式，提出了一种自适应频率稳定控制策略：实时监测系统运行状态和频率，并根据频率范围采取相应的控制措施。通过对自备电厂一次调频参数、二次调频控制等方面的研究，改善了孤网系统应对冲击负荷等小扰动的调节能力；通过实施可靠的就地低频减载（under frequency load shedding，UFLS）控制，可有效应对发生大扰动导致频率严重下降的紧急情况。仿真结果显示，所提出的控制策略能够保证孤网系统频率的稳定性。

关键词: 钢铁企业, 自备电厂, 孤网, 冲击负荷, 频率稳定

Abstract:

The structural characteristics of power supply system of steel enterprise were introduced, and the models of speed regulation system and loads in autonomous power plant were established, in which the load models included normal load model and shock load model. For the isolated operation mode, an adaptive frequency stability control strategy was proposed to monitor the operation state and frequency of system real-timely, and take appropriate control measures according to the frequency. Through the study on the primary frequency parameters and secondary frequency control of autonomous power plant, the regulation ability of the isolated network to deal with the shock load and other small perturbations was improved. Through the implementation of a reliable under frequency load shedding （UFLS） control, the emergency of serious decline in the frequency caused by large disturbances could be solved effectively. Simulation results show that the proposed control strategy can ensure the frequency stability of the isolated system.

Key words: steel enterprise, autonomous power plant, isolated grid, shock load, frequency stability

中图分类号:

TM 73，TF 61

刘皓明，姚霜晨，袁小慧，李强，吕振华. 含自备电厂的钢铁企业孤网频率稳定控制策略[J]. 电力建设, 2015, 36(12): 108-115.

LIU Haoming1, YAO Shuangchen1, YUAN Xiaohui1, LI Qiang2, LYU Zhenhua2. Frequency Stability Control Strategy for Isolated Power System of Steel Enterprise with Autonomous Power Plant[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(12): 108-115.

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含自备电厂的钢铁企业孤网频率稳定控制策略

Frequency Stability Control Strategy for Isolated Power System of Steel Enterprise with Autonomous Power Plant

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