Analytical method for travelling wave protection setting of HVDC transmission line

作者：Liang, Yi; Cai, Zexiang; Tian, Deliang; Li, Xiaohua; Li, Shuyong

来源：Power System Technology, 2017, 41(1): 298-304.

DOI：10.13335/j.1000-3673.pst.2016.0515

• Analytical calculation
• Fault analysis
• HVDC
• HVDC transmission lines
• Lightning disturbances
• Protection settings
• Selectivity and sensitivity
• Traveling wave protection

Some problems exist in travelling wave transient process of HVDC transmission line, such as chromatic dispersion attenuation and bipolar coupling, making it difficult to analyze fault quantities. In addition, protection device sampling is stochastic, further increasing difficulty of quantitative analysis of criterion characteristic parameters. Therefore, a unified and effective setting method is absent in travelling wave protection. This paper analyzed demand of travelling wave setting from perspective of selectivity and sensitivity, and established a fault quantity analytical model for setting calculation based on key fault locations. In order to eliminate protection sampling randomness, an analytical calculation method of criterion characteristic parameters was proposed. According to characteristic curve demonstrating characteristic parameterchanges due to transition resistances and lightning disturbances, protection setting was calculated. This setting has extraordinary ability against transition resistance and lightning disturbance. Comparative analysisof protection setting of actual HVDC transmission line and protection boundary verified validity of the proposed analytical setting method.

• 出版日期2017-1-5
• 单位华南理工大学; 南方电网科学研究院有限责任公司