铁路功率调节器过渡态出力配置及控制策略研究
Research on Output Configuration and Control Strategy of Railway Power Conditioner in Transition State
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摘要: 针对电力机车过渡态(驶入–制动–启动)运行情况下负荷的功率特性,该文首次研究电气化铁路功率调节器过渡态的出力配置及控制策略。传统的电气化铁路功率调节器通常采用最大容量配置,其控制方式也是针对电力机车的稳定运行状态。而文中提出的出力配置及控制方式兼容电力机车过渡态运行时的电能质量、容量配置及出力需求,充分发挥了铁路功率调节器的并联特性,有效提高其利用率。首先,文章通过分析牵引机车过渡态负荷功率及电流特性,可知牵引机车负荷功率及电流呈现波动性。然后,根据电力机车过渡态的运行特性,分配电气化铁路功率调节器容量配置与出力,以满足其电能质量需求。在此基础上,创新性的研究机车过渡态下的铁路功率调节器最大出力控制策略,进而得到合理的电气化铁路功率调节器指令电流及容量配置区域,解决传统控制方式易出现过流保护而退出的问题,有效满足机车加速等过渡态下电流、功率波动的运行环境,实现电力机车牵引变电能质量、电气化铁路功率调节器容量配置及出力的有机统一。最后,通过Matlab仿真和实验平台验证算法的有效性和合理性。Abstract: In view of the power characteristics of the load in the transient state of the electric locomotive（drive in-brake-start）, this paper studied the output configuration and control strategy of the transition state of the electrified railway static power conditioner for the first time. The traditional electrified railway static power conditioners usually use a maximum capacity configuration, and the control method is also for the stable operation state of the electric locomotive. The power distribution and control method proposed in this paper is compatible with the power quality, capacity configuration and output demand of the electric locomotive in the transient state operation, which fully exerts the parallel characteristics of the railway power regulator and effectively improves its utilization. Firstly, by analyzing the load power and current characteristics of the traction locomotive in the transient state, it can be known that the traction locomotive load power and current exhibit fluctuation. Then, according to the operating characteristics of the transition state of the electric locomotive, the capacity configuration and output of the electrified railway static power conditioner were allocated to meet the power quality requirements. On this basis, the railway static power conditioner maximum output control strategy of the locomotive transition state was innovatively studied, and then the reasonable electrified railway static power conditioner command current and capacity configuration area was obtained, which solves the situation that the traditional control mode is prone to overcurrent protection and exits, It effectively satisfies the operating environment of the locomotive transition state（such as acceleration）, including fluctuation characteristics such as current and power, and realizes the organic unity of power quality of electric locomotive traction and capacity configuration and output of electrified railway static power conditioner. Finally, the effectiveness and rationality of the algorithm were verified by Matlab simulation and experimental platform.
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