可控串补阻尼电力系统低频振荡控制策略研究
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摘要
可控串联补偿装置（TCSC，Thyristor Controlled Series Compensation）是柔
性交流输电系统（FACTS，Flexible AC Transmission System）的重要控制器之
一。TCSC通过调节晶闸管的触发角，可以实现电抗值从容性到感性的较大范
围内连续调节，不仅可以控制系统的潮流分布、阻尼低频振荡，而且还可提高
系统的稳定性。本论文主要研究了TCSC阻尼系统低频振荡的有关问题，其主
要内容有：
采用拓扑建模法建立了TCSC的稳态模型。分析了基波阻抗与晶闸管导通
角的关系、电容电压及电感电流的基波和谐波分量与晶闸管导通角的关系。并
利用得到的结论对拟建的伊冯TCSC工程参数进行了具体的分析。
通过推导单机无穷大系统含TCSC的推广Phillips-Heffron模型，提出并分
析了TCSC向电力系统提供阻尼转矩的具体形式、性质及其特征、提供正阻尼
转矩的条件以及不同参数及运行工况下TCSC最佳控制参数的选取原则。通过
时域仿真，验证了所提出理论的正确性。
提出了基于可调模糊规则及可调输出尺度变换因子的TCSC自适应模糊阻
尼控制器的设计方法。采用可调模糊规则增强了控制器对系统扰动类型的鲁棒
性，采用可调的输出尺度变换因子使控制器对系统运行点变化具有鲁棒性。以
上特点通过时域仿真得到了验证。
通过建立含TCSC多机系统的线性化数学模型，提出并研究了含TCSC多
机系统的特征分析法。通过分析含TCSC多机系统的特征根、特征向量、相关
因子、机电回路比，提出了低频振荡模式的判别方法、TCSC最佳配置位置的
选择方法。采用FORTRAN语言编制了包含以上功能的TCSC多机系统频域分
析软件包。
提出了多机系统TCSC模糊变结构阻尼控制器的设计方法。由于采用了模
糊趋近方式，使得控制系统不仅具有对参数摄动及干扰类型的鲁棒性，同时避
免了“高频颤动”现象。时域仿真证明了所设计的控制器对干扰类型和系统运
行方式具有较好的鲁棒性。
通过系统大干扰下的时域仿真，验证了所提出的TCSC自适应模糊阻尼控
制和模糊变结构阻尼控制对大干扰后的振荡有很好的阻尼效果，并对系统的暂
态稳定性无不利影响。
在本文研究的基础上，得出了一些有益的结论。
The Thyristor Controlled Series Compensation (TCSC) is an important
controller among the flexible AC transmission system (FACTS). By adjusting the
trigger angle of thyristor, TCSC can regulate the reactance from capacitive to
inductive mode continuously. Thus, the power flow is controllable and the low-
frequency oscillation is damped. Also, the system stability is enhanced. Some issues
about TCSC to damp low-frequency oscillation are mainly studied in this paper. The
primary coverage is as follows:
Using topological model building method, the TCSC steady state model is set
up. By analyzing the relationship between the thyristor trigger angle and
fundamental impedance, and the relationship between the trigger angle and
fundamental and harmonic components of capacitive voltage and inductive current,
the TCSC parameters of planning Yi-Feng project are explored.
From the extended Phillips-Heffron model of single machine infinite bus
system with TCSC established in this paper, the form and properties of damping
torque provided by TCSC is analyzed, and the condition of providing positive
damping torque is proposed, also the selecting principle of TCSC controller
parameters is proposed. Simulation results in time domain prove the viewpoint
presented in this paper.
A new scheme of adaptive fuzzy damping controller of TCSC, based on
adjusting control rules and output scaling factor, is proposed. Simulation results in
time domain prove the proposed adaptive fuzzy damping controller is robust under
various disturbances and operating modes.
By establishing the linear model of multi-machine power systems with TCSC,
their eigenvalue analysis method is proposed. The low frequency oscillation mode
and the optimal location of TCSC can be determined by eigenvalue, eigen-vectors,
correlation factor, and proportion of mechanism-electricity. The analysis software of
multi-machine power systems with TCSC in frequency domain has been formed.
The design method of TCSC fuzzy variable structure damping controller (FVSC)
in multi-machine power systems is presented. With the adoption of fuzzy
approaching method, the control system is robust under the parameter perturbation
and disturbance mode. At the same time, the igh frequency flutter?is avoided.
Simulation results in time domain prove the proposed FVSC control is robust under
various disturbances and operating modes.
Simulation results in time domain under the large disturbance show that the
presented TCSC adaptive fuzzy control and FVSC has good effects on the
oscillation after the large disturbance, and could enhance the system transient
stability.
On the basis of the research results in this paper, some excellent conclusions are
obtained.
性交流输电系统（FACTS，Flexible AC Transmission System）的重要控制器之
一。TCSC通过调节晶闸管的触发角，可以实现电抗值从容性到感性的较大范
围内连续调节，不仅可以控制系统的潮流分布、阻尼低频振荡，而且还可提高
系统的稳定性。本论文主要研究了TCSC阻尼系统低频振荡的有关问题，其主
要内容有：
采用拓扑建模法建立了TCSC的稳态模型。分析了基波阻抗与晶闸管导通
角的关系、电容电压及电感电流的基波和谐波分量与晶闸管导通角的关系。并
利用得到的结论对拟建的伊冯TCSC工程参数进行了具体的分析。
通过推导单机无穷大系统含TCSC的推广Phillips-Heffron模型，提出并分
析了TCSC向电力系统提供阻尼转矩的具体形式、性质及其特征、提供正阻尼
转矩的条件以及不同参数及运行工况下TCSC最佳控制参数的选取原则。通过
时域仿真，验证了所提出理论的正确性。
提出了基于可调模糊规则及可调输出尺度变换因子的TCSC自适应模糊阻
尼控制器的设计方法。采用可调模糊规则增强了控制器对系统扰动类型的鲁棒
性，采用可调的输出尺度变换因子使控制器对系统运行点变化具有鲁棒性。以
上特点通过时域仿真得到了验证。
通过建立含TCSC多机系统的线性化数学模型，提出并研究了含TCSC多
机系统的特征分析法。通过分析含TCSC多机系统的特征根、特征向量、相关
因子、机电回路比，提出了低频振荡模式的判别方法、TCSC最佳配置位置的
选择方法。采用FORTRAN语言编制了包含以上功能的TCSC多机系统频域分
析软件包。
提出了多机系统TCSC模糊变结构阻尼控制器的设计方法。由于采用了模
糊趋近方式，使得控制系统不仅具有对参数摄动及干扰类型的鲁棒性，同时避
免了“高频颤动”现象。时域仿真证明了所设计的控制器对干扰类型和系统运
行方式具有较好的鲁棒性。
通过系统大干扰下的时域仿真，验证了所提出的TCSC自适应模糊阻尼控
制和模糊变结构阻尼控制对大干扰后的振荡有很好的阻尼效果，并对系统的暂
态稳定性无不利影响。
在本文研究的基础上，得出了一些有益的结论。
The Thyristor Controlled Series Compensation (TCSC) is an important
controller among the flexible AC transmission system (FACTS). By adjusting the
trigger angle of thyristor, TCSC can regulate the reactance from capacitive to
inductive mode continuously. Thus, the power flow is controllable and the low-
frequency oscillation is damped. Also, the system stability is enhanced. Some issues
about TCSC to damp low-frequency oscillation are mainly studied in this paper. The
primary coverage is as follows:
Using topological model building method, the TCSC steady state model is set
up. By analyzing the relationship between the thyristor trigger angle and
fundamental impedance, and the relationship between the trigger angle and
fundamental and harmonic components of capacitive voltage and inductive current,
the TCSC parameters of planning Yi-Feng project are explored.
From the extended Phillips-Heffron model of single machine infinite bus
system with TCSC established in this paper, the form and properties of damping
torque provided by TCSC is analyzed, and the condition of providing positive
damping torque is proposed, also the selecting principle of TCSC controller
parameters is proposed. Simulation results in time domain prove the viewpoint
presented in this paper.
A new scheme of adaptive fuzzy damping controller of TCSC, based on
adjusting control rules and output scaling factor, is proposed. Simulation results in
time domain prove the proposed adaptive fuzzy damping controller is robust under
various disturbances and operating modes.
By establishing the linear model of multi-machine power systems with TCSC,
their eigenvalue analysis method is proposed. The low frequency oscillation mode
and the optimal location of TCSC can be determined by eigenvalue, eigen-vectors,
correlation factor, and proportion of mechanism-electricity. The analysis software of
multi-machine power systems with TCSC in frequency domain has been formed.
The design method of TCSC fuzzy variable structure damping controller (FVSC)
in multi-machine power systems is presented. With the adoption of fuzzy
approaching method, the control system is robust under the parameter perturbation
and disturbance mode. At the same time, the igh frequency flutter?is avoided.
Simulation results in time domain prove the proposed FVSC control is robust under
various disturbances and operating modes.
Simulation results in time domain under the large disturbance show that the
presented TCSC adaptive fuzzy control and FVSC has good effects on the
oscillation after the large disturbance, and could enhance the system transient
stability.
On the basis of the research results in this paper, some excellent conclusions are
obtained.
引文
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