目前国内外尚没有计算SVC晶闸管网损的行业标准。IEEE SVC选型指南中提供了晶闸管阀组损耗的参考计算方法，与SVC晶闸管实际测量损耗值相差较大。因此有必要研究SVC晶闸管阀组损耗计算的新算法，更精确地估算晶闸管阀组的损耗。本文对阀组损耗的主要部分晶闸管阀通态损耗进行研究，提出一种基于管压降模型的晶闸管通态损耗的新算法，对5STP25L5200型号晶闸管进行理论线损计算，与厂家实测数据相吻合。

At present, SVC thyristor loss calculation remains as a challenge in the power industry. IEEE Guide for the Functional Specification of SVCs provides a reference model for thyristor valve loss estimae, may not accurate to the SVC/HVDC De- icer in service at the 500kV Guilin Substation. This paper investigates the SVC thyristor valve loss components, proposes a new algorithm for thyristor valve on state loss calculation, based on the pressure drops. Apply the new algorithm on 5STP25L5200 type thyristor, the calculated theoretical loss matches the factory test results.

在电力机车辅助电路移相电容支路中采用串联晶闸管的方法,消除了在合闸瞬间产生的电流冲击。利用PSIM仿真软件进行了仿真实验,在相同的仿真参数下,对比了移相电容支路串联晶闸管前后的功率因数曲线,可以看出,在移向电容支路串联晶闸管后电路的功率因数明显提高。

Used method that shifting phase capacitor series thyristor in electric locomotive auxiliary circuit , eliminates in the closing moments generated current shock .Simulating to use the PSIM simulation software , in the same simulation parameters , contrast the power factor curve using thyristor in the series of shifting phase capacitor , after series of shifting phase capacitor uses thyristor the power factor of the circuit is improved obviously .

对采用晶闸管整流的大型电解铝厂，同步信号的稳定将直接影响整流机组的稳定运行，对整流机组跳闸故障进行分析研究，进而采取措施，提出改造方案，从根本上解决了由于同步信号的不稳定引发晶闸管整流机组跳闸的问题，确保铝电解生产的持续稳定运行。

For a large-scale aluminum electrolysis plant using thyristor rectifying devices, the stabilization of synchronizing signal will have direct impact on stable operation of rectifier units. Through analysis and study on the failures of rectifier units tripping were carried out, the measures was taken and renovation scheme was put forward that the problem of thystor rectifier units tripping caused by unstable synchronizing signal was fundamen-tally solved so as to guarantee continuous and stable operation of aluminum electrolysis production.

脉冲间歇整流装置负载功率变化迅速、交流供电频率变化范围大、交流电压/电流畸变严重,对其晶闸管触发策略的研究鲜见报道。以输出侧为直流电容的兆瓦级脉冲间歇整流装置为研究对象,提出并实现一种适用于此种应用的新型晶闸管触发策略。所提出的触发策略根据晶闸管阳极—阴极端电压的变化来实时调整晶闸管的触发脉冲,较好地克服了现有触发策略在脉冲间歇整流应用中的不足。策略结构简单、可靠,实用性强。设计中同时集成一种实时的晶闸管触发状态诊断机制,完了触发策略的执行构架。试验结果表明:在提出的触发策略下,装置运行正常,在负载突变的情况下,所提出的触发策略仍表现出色;脉冲运行中,触发状态实时诊断结果与理论分析一致,可为控制提供实时可靠的信息。

When the pulse intermittent rectifier works, the load changes rapidly, the input frequency varies substantially and the input voltage/current distorts severely. The SCR (Silicon Controlled Rectifier) gating strategy for this application is rarely addressed in published works. This paper focuses on megawatt intermittent rectifiers with the heavy capacitive load, and proposes and realizes a novel SCR gating strategy. The proposed gating strategy will adjust real-time gating pulses according to the changes of anode-kathode voltages of SCR and overcomes the existing shortcomings of present SCR gating strategies very well. The strategy is compact, credible and practical. To perfect the system structure, a real-time gating diagnosis method is also integrated with the strategy. In real operation, the strategy works perfectly and performs well even under sudden load variation; the gating diagnosis method coincides with the theoretical one, and it can provide credible information for system con

晶闸管控制电路是消弧线圈实现精确补偿的硬件基础，本文通过对TSC/TCR式消弧线圈的晶闸管控制电路设计的分析，实现对消弧线圈二次侧投入电容量与电感量的控制。

Thyristor control circuit is the hardware basis of arc suppression coil accurate compensation. This paper analyzed and designed TSC / TCR Petersen Coil thyristor control circuit,to achieve the control of capacitance and inductance in Petersen coil secondary input.