| 摘要: |
| 高压直流输电系统极控信号的可靠传输是高压直流输电系统稳定运行的重要因素。目前的研究缺少极控信号发送全过程的宏观分析，忽视了不同业务需求对极控信号传输可靠性分析的影响。介绍了站间极控信号丢失带来的影响，对直流极控信号采用PCM接入、路由器接入和站间整个通信传输过程进行分析对比，结合不同运行方式和风险等级下对极控系统可靠性的需求，提出了基于信号传输能力的可靠性分析方法。通过±500 kV高肇直流和±800 kV楚穗直流进行实例计算，得出了可靠性随业务需求变化的趋势，分析比较了极控信号传输可靠性。总结了提高直流极控信号传输可靠性的方法，对提高直流控制系统的稳定性具有指导意义。 |
| 关键词: 高压直流输电 极控信号 可靠性 业务需求 通信通道 |
| DOI：10.7667/j.issn.1674-3415.2015.12.018 |
| 投稿时间：2014-09-09修订日期：2015-03-18 |
| 基金项目: |
|
| Reliability analysis on HVDC pole control signal transmission network |
| JIN Xin |
| (CSG Power Dipatching Control Center, Guangzhou 510623, China; GZ Bureau,
CSG EHV Power Transmission Company, Guangzhou 510405, China) |
| Abstract: |
| The reliable transmission of the HVDC pole control signal is considered to be the key to make HVDC system run stably. In recent studies, the whole procedure analysis of pole control signal is not mentioned, and the influence of different service demand on pole control signal reliability is ignored. The influences due to pole control signal lost is established, and the transmission process of DC pole control signal between PCM access and router access is compared. Combined with the pole control system reliability demand of different operation mode and risk grade, reliability analysis method based on the signal transmission capacity is proposed. By calculation and analysis of reliability in ± 500 kV Gaozhao DC and ± 800 kV Chusui DC, the trend that reliability varies with the service demands is then evaluated, and then the transmission reliability of pole control signal is compared and analyzed. In the end, the methods to improve the reliability of DC pole control signal transmission are summarized. It has a guiding significance to improve the stability of DC control system. |
| Key words: HVDC pole control signal reliability service demand communication path |
