数模混合式实时仿真装置中含多质量块轴系的发电机模型及其在工程研究中的应用

介绍了数模混合式实时仿真装置中多质量块轴系发电机模型的构成及其在伊冯可控串补工程中的应用。为了抑制或消除次同步谐振 (SSR) ,中国电科院 TCSC课题组提出了一种新的微调控制方法——电压增量控制 ,其基本原理是在SSR条件下保持电容电压增量水平接近稳态波形 ,使大部分SSR电流仅能通过晶闸管控制的电感支路。此时 ,串联电容补偿装置 (TCSC)呈电感特性 ,因此抑制次同步谐振是该方法的固有特性。通过接入 TCSC物理模拟控制器所进行的试验研究 ,验证了该方法在理论上是正确的 ,应用此策略的TCSC控制器可以有效地抑制或消除次同步谐振。

SYNCHRONOUS GENERATOR SHAFT-SYSTEM MODEL IN HYBRID REAL TIME SIMULATOR AND ITS APPLICATION

This paper describes a synchronous generator shaft system model used in hybrid real time simulator and its application in Yimin Fengtun 500kV TCSC transmission system. For effective mitigating or eliminating SSR, a new vernier control scheme of TCSC, i.e., Voltage Boost Control, is developed by EPRI, China. Its principal concept is as follows: under SSR condition, the capacitor voltage boost level is closely kept to steady state waveform, and most of the SSR current could be regarded as flowing through the thyristor controlled inductor branch, and TCSC will exhibit inductive characteristics at subsynchronous frequencies. So the method can mitigate SSR to some degree inherently. With the above mentioned generator model, the scheme is verified.