新型电力系统中高压感应电机起动过程不同算法的对比研究

白晶; 张志坚; 王卫; 周运斌; 张绍峰

白晶,张志坚,王卫,周运斌,张绍峰.新型电力系统中高压感应电机起动过程不同算法的对比研究[J].电测与仪表,2023,60(7):70-76.
Bai Jing,Zhang zhijian,Wang wei,Zhou yunbin,Zhang Shaofeng.Comparative Study on Different Algorithms of Starting Process of High Voltage Motor in New Power Systems[J].Electrical Measurement & Instrumentation,2023,60(7):70-76.

新型电力系统中高压感应电机起动过程不同算法的对比研究

Comparative Study on Different Algorithms of Starting Process of High Voltage Motor in New Power Systems

DOI：10.19753/j.issn1001-1390.2023.07.011

中文关键词: 感应电机起动新型电力系统数值振荡改进梯形法

英文关键词:induction motor starting, new power systems, numerical oscillation, improved trapezoidal method

基金项目:国家电网公司科技项目（5100-202111025A-0-0-00）

作者中文名	作者英文名	单位
白晶	Bai Jing	国网北京市电力公司
张志坚	Zhang zhijian	国网北京市电力公司
王卫	Wang wei	国网北京市电力公司
周运斌	Zhou yunbin	国网北京市电力公司
张绍峰	Zhang Shaofeng	国网北京市电力公司

摘要点击次数: 1321

中文摘要:

电力行业碳排放是我国碳排放的主要组成部分,为实现“双碳”目标,低碳新型电力系统成为电力系统未来发展的必然趋势。含有高比例新能源的电力系统抗扰性弱、过载能力低,大型感应电机起动可能导致设备脱网,对系统稳定带来不利影响。因此电机起动过程高效、精确的计算对新型电力系统暂态时域仿真尤为重要。为了得到能和电力系统常用暂态仿真程序接口的感应电机起动高效稳定算法,进而提高暂态仿真效率,本文对比研究了显式欧拉、隐式欧拉、隐式梯形、龙格库塔四种算法的精度、稳定性和效率,并将上述算法用于高压大功率感应电机的起动过程仿真分析,从数值迭代的角度分析了不同算法采用大步长仿真进入稳态阶段出现振荡的原因。为解决该数值振荡问题,对传统隐式梯形法引入可变参数,得到改进梯形法,确定了使算法可靠收敛的参数最优区间。最后通过算例仿真验证了改进梯形法的有效性和可行性,为低碳新型电力系统高效仿真算法的选择提供指导。

英文摘要:

The carbon emission of the power industry is the main component of China"s carbon emissions. In order to achieve the double carbon goal, the new low-carbon power system has become the inevitable trend of the future development of the power system. The power system with a high proportion of new energy has weak immunity and low overload capacity. The starting of large induction motors may lead to equipment disconnection, which will adversely affect the stability of the system. Therefore, the efficient and accurate calculation of motor starting process is particularly important for the new power system transient time domain simulation. In order to obtain an efficient stable algorithm for induction motors during starting process that can interface with common transient simulation programs in power systems, and thus improve the efficiency of transient simulation, this paper compares the accuracy, stability and efficiency of four algorithms: explicit Euler, implicit Euler, implicit trapezoid, and Runge Kutta mehod, and applies the above algorithms to the simulation analysis of the starting process of high-voltage high-power induction motors. From the point of view of numerical iteration, the causes of oscillation in the steady state of different algorithms using large step size simulation are analyzed. In order to solve the numerical oscillation problem, variable parameters are introduced into the traditional implicit trapezoid method to obtain an improved trapezoid method, and the optimal parameter interval for reliable convergence of the algorithm is determined. Finally, the effectiveness and feasibility of the improved trapezoidal method are verified by numerical simulation, which provides guidance for the selection of efficient simulation algorithms in new power system.

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