摘要
以分布式新能源为主的主动支撑技术还处于发展阶段,常规发电机的惯量支撑能力仍在发挥重要作用,励磁系统作为其控制核心,直接影响着供电可靠性。本文针对电厂端缺乏监测发电机励磁特性有效措施的现状,研制了发电机励磁在线监测系统。首先,介绍励磁在线监测系统的硬件和软件架构,根据四种主流的通信规约设计励磁监测模型。其次,提出适应多种通信规约的分布式前置采集架构,构建采集通道负载均衡数学模型,实现了励磁信号的分布式采集和集中监视。最后,研发励磁量测动态监视、发电机运行状态预警等功能。所研制的监测系统已在某660MW机组得到成功应用。
The active support technology primarily based on distributed new energy is still in the developing stage,and the inertia support capacity of conventional generators still plays an important role.The excitation system,as the generator’s control core,directly affects the reliability of power supply.In this study,a generator excitation online monitoring system(GEOMS)is developed in view of the fact that there is limited monitoring capability in generator excitation.Firstly,hardware and software architecture of GEOMS are introduced,and the excitation monitoring model is designed according to four mainstream communication protocols.Secondly,the distributed front-end acquisition architecture that adapts to various communication protocols are proposed and a mathematical model for load balancing of acquisition channels is constructed to realize distributed acquisition and centralized monitoring of excitation signals.Finally,some basic functions,such as dynamic monitoring of excitation measurements and early warning of generator operating status,are developed.The developed system has been successfully applied in a 660MW unit.
作者
苏荣强
施志良
张高峰
陈峰
张海天
SU Rongqiang;SHI Zhiliang;ZHANG Gaofeng;CHEN Feng;ZHANG Haitian(NR Electric Co.,Ltd,Nanjing 211102)
出处
《电气技术》
2024年第11期70-75,80,共7页
Electrical Engineering
关键词
励磁监测系统
励磁监测模型
前置采集架构
通道负载均衡数学模型
excitation monitoring system
excitation monitoring model
front-end acquisition architecture
mathematical model for load balancing of acquisition channels
