Discussion of several analytical approaches and tools about subsynchronous resonance 幾種次同步振蕩分析方法和工具的闡述
These models have enough precision in subsynchronous oscillation ( sso ) problem analysis 這種模型對于分析次同步振蕩( sso )問題,具有足夠的精度。
Subsynchronous resonance ( ssr ) is a quite hazardous state easily encountered in power systems 次同步振蕩( ssr )是電力系統(tǒng)運行中可能出現(xiàn)的一種相當危險的狀態(tài)。
The theory of complex - moment - coefficient method is provided due to ssr , and the relationship between complex - moment - coefficient d ( m ) and subsynchronous frequency is also illustrated 在ssr研究中,主要闡釋了復(fù)數(shù)力矩系數(shù)法研究的機理,探討了復(fù)力矩系數(shù)d ~ ( ( m ) )與次同步頻率的關(guān)系。
In an ac system with multiple hvdc converters , turbine generators can interact adversely with all the converters through electrical connection , which makes the subsynchronous oscillation more complicated 并通過對含有多個直流換流站系統(tǒng)的電氣阻尼特性分析,驗證了該指標的有效性。
This simplification principle is the foundation of the following analysis . using the test signal method , a detailed analysis of subsynchronous oscillation for a hvdc system is performed ( 3 )對一個僅含有直流輸電線路的系統(tǒng),采用復(fù)轉(zhuǎn)矩系數(shù)- - - -測試信號法,對其次同步振蕩特性進行了分析。
From the viewpoint of electrical damping , this dissertation focus on the damping analysis of subsynchronous oscillation for different systems , such as hvdc system , hybrid ac / dc system and multiple - converter hvdc system 目前,直流輸電技術(shù)已經(jīng)在我國得到了廣泛的應(yīng)用,并且在今后的幾十年中,直流輸電在我國還將有更為廣闊的應(yīng)用前景。
Then the different behaviors between fixed series capacitor and tcsc are compared aiming at ssr , when they are individually applied to typical model of ieee second benchmark on subsynchronous resonance 繼而以ieeesecondbenchmarkonsubsynchronousresonance典型模型為例,比較了固定電容串補與可控串聯(lián)補償在模型系統(tǒng)中針對同步發(fā)電機次同步振蕩這一行為所造成的差異表現(xiàn)。
This paper studies two tcsc study systems , a tcsc system based on ieee first benchmark model ( ieee fbm ) and a simplified yi - feng 500kv tcsc study system , with ssr eigenvalue analysis in the platform of psaspfmsst . it proves the funtion of tcsc to mitigate subsynchronous resonance ( ssr ) . it also analyzes the influence of thyristor triggering algorithm of tcsc on ssr mitigation 本文在psasp小干擾線性化平臺psasp msst上,對基于ieeefirstbenchmarkmodel ( ieeefbm )的tcsc系統(tǒng)及簡化的伊馮500kv可控串補研究系統(tǒng),進行了ssr小干擾穩(wěn)定分析,驗證了tcsc對次同步諧振( ssr )的抑制作用,并研究了觸發(fā)算法對tcsc抑制ssr能力的影響。
Torsional interaction exists between hvdc converters and turbine - generators , and negative electrical damping provided by hvdc may cause subsynchronous oscillation ( sso ) that can lead to turbine - generator shaft failure and electrical instability at oscillation frequencies lower than the fundamental system frequency 高壓直流輸電( high - voltage - direct - current - - - - hvdc )系統(tǒng)與臨近同步發(fā)電機組之間存在著扭振相互作用, hvdc的電氣負阻尼作用有可能引起機組在次同步頻率范圍的扭轉(zhuǎn)振蕩。