Sufficient dynamic Var reserve (DVR) can efficiently enhance the immunity against continuous commutation failures (CCF) to avoid DC blocking and further security accidents in the line-commutated converter (LCC) based HVDC receiving-end power system. This article proposes the problem formulation and efficient solution algorithm for the DVR-constrained coordinated scheduling considering contingencies and wind uncertainties. The DVR sufficiency is proposed for the post-contingency CCF immunity in scheduling problems, which combines the voltage sensitivity-based DVR capacity calculation and the off-line DVR requirement tests. HVDC transmission and W/Var sources are coordinately scheduled to accommodate contingencies and wind uncertainties and to improve the operational economy. The reduced event-based algorithm (REA) is developed to subdivide the complex scheduling problem and reduce the considered constraints for efficient calculation. Case studies demonstrate the guaranteed DVR sufficiency, the improved economy, and the enhanced computational efficiency of the proposed methods.

中文翻译：

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考虑突发事件和风不确定性的LCC-HVDC接收端系统的无功储备约束动态协调调度

足够的动态无功储备（DVR）可以有效地增强对连续换向失败（CCF）的抵抗力，从而避免基于直流换相器（LCC）的HVDC接收端电源系统中的DC阻塞和进一步的安全事故。针对突发事件和风的不确定性，提出了DVR约束协调调度的问题表述和高效求解算法。提出了DVR的充分性，以解决调度问题中的应急后CCF免疫问题，它结合了基于电压灵敏度的DVR容量计算和离线DVR需求测试。高压直流输电和W / Var信号源经过协调调度，以适应突发事件和风的不确定性，并改善运营经济性。开发了基于事件的精简算法（REA）来细分复杂的调度问题并减少有效计算所需的约束。案例研究表明，所提方法具有保证的DVR充分性，改进的经济性和增强的计算效率。