糖厂自备电厂频率保护策略研究与实践  

Research and Practice of Frequency Protection Strategy for Sugar Refinery's Self-provided Power Plant

作　　者：周广兴 张茹[2] 周川 邝玉芬 汤晏文 管红斌[6] 姚鹏[2] 章建军 罗林楚 ZHOU Guang-xing;ZHANG Ru;ZHOU Chuan;KUANG Yu-fen;TANG Yan-wen;GUAN Hong-bin;YAO Peng;ZHANG Jian-jun;LUO Lin-chu(Yunnan Hailite Electric Automation Co.Ltd.,Kunming,Yunnan 650221;Kunming Electric Appliance Science Research Institute,Kunming,Yunnan 650221;Junfa Real Estate Co.Ltd.,Kunming,Yunnan 650225;Yunnan People Electrical Appliance Co.Ltd.,Kunming,Yunnan 650503;Yunnan Yingmao Sugar Industry(Group)Co.Ltd.,Kunming,Yunnan 650228;Yunnan Scientific and Technical Information Research Institute,Kunming,Yunnan 650051)

机构地区：[1]云南海力特电气自动化有限公司,云南昆明650221 [2]昆明电器科学研究所,云南昆明650221 [3]俊发集团有限公司,云南昆明650225 [4]云南人民电力电气有限公司,云南昆明650503 [5]云南英茂糖业(集团)有限公司,云南昆明650228 [6]云南省科学技术情报研究院,云南昆明650051

出　　处：《甘蔗糖业》2021年第2期102-108,共7页Sugarcane and Canesugar

摘　　要：以糖厂发配电系统的实际配置为基础,对现有采样算法进行对比分析,选取适用的电压、电流、频率等参数的采样算法;对比研究了国内外相关孤岛检测技术,基于单机-无穷大运行模型,研究了自备热电厂发电机组的负荷极限;确定了外部主网故障防自备电厂孤岛效应的解列条件以及继电保护逻辑;对自备电厂用电负荷进行分级,据此确定低频减载判据,最后确定了自备电厂频率保护整定策略的工程实施。Based on the actual configuration of power generation and distribution system in sugar refinery,the existing sampling algorithms are compared and analyzed,and the suitable sampling algorithms for parameters such as voltage,current and frequency are selected,based on the single-machine-infinite-bus operation model,the load limit of the self-contained thermal power plant is studied,the condition of the separation of the isolated island effect and the relay protection logic of the self-contained thermal power plant are determined,and the load of the self-contained thermal power plant is classified,based on this,the criterion of low cycle load shedding is determined,and the setting strategy of frequency protection in self-contained power plant is implemented.

关 键 词：糖厂 自备电厂 频率保护 交流采样 电网解列 低频减载 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]