This paper presents a new concept for damping electro-mechanical oscillations in large turbo generator. The proposed concept is based on coordination between Power System Stabilizer （PSS） and Thyristor Controlled Br...This paper presents a new concept for damping electro-mechanical oscillations in large turbo generator. The proposed concept is based on coordination between Power System Stabilizer （PSS） and Thyristor Controlled Braking Resistor （TCBR）. This coordination will enhance the stability of the inertial and torsional oscillatory modes. The study is performed on system-I of the second IEEE benchmark for simulation of Sub-Synchronous Oscillations, using eigenvalue analysis and verified by detailed digital simulation. A dynamic fundamental frequency model for TCBR is developed. The pole placement technique is used to design the control system of TCBR and PSS. The shaft torque＇s following a disturbance is computed and analyzed. The obtained results indicate that substantial damping is achieved by the proposed coordination.展开更多
为了演示和验证稳定器设计的就地相位补偿法在多机电力系统中的应用,介绍在多机电力系统中,就地补偿设计稳定器的2个应用实例。第1个实例是在多机电力系统中就地补偿设计电力系统稳定器（power system stabilizer,PSS）,阻尼电力系统局...为了演示和验证稳定器设计的就地相位补偿法在多机电力系统中的应用,介绍在多机电力系统中,就地补偿设计稳定器的2个应用实例。第1个实例是在多机电力系统中就地补偿设计电力系统稳定器（power system stabilizer,PSS）,阻尼电力系统局部模振荡。第2个实例是就地补偿设计附加在静态同步补偿器（static synchronous compensator,STATCOM）上的稳定器,抑制多机电力系统中的区域模振荡,并给出在一个16机电力系统中的应用计算和仿真结果。展开更多
For solving the dynamic instability problem of Yunnan Provincial Power System (YNPS) and the South China Interconnected Power System (SCIPS), Lubuge Hydropower Station was chosen to install Power System Stabilizer (PS...For solving the dynamic instability problem of Yunnan Provincial Power System (YNPS) and the South China Interconnected Power System (SCIPS), Lubuge Hydropower Station was chosen to install Power System Stabilizer (PSS). This paper introduces the principles and methods of parameter selection for PSS, in addition to field test. The test results show that the PSS installed can significantly improve the system damping.展开更多
作为抑制低频振荡最有效的手段之一,电力系统稳定器(power system stabilizer,PSS)在电力系统中得到了广泛的应用。现今国内最广泛采用的PSS是PSS2B,不过由于其自身结构问题,PSS2B对频率较低的区域间振荡模式抑制效果一般。新型多频段...作为抑制低频振荡最有效的手段之一,电力系统稳定器(power system stabilizer,PSS)在电力系统中得到了广泛的应用。现今国内最广泛采用的PSS是PSS2B,不过由于其自身结构问题,PSS2B对频率较低的区域间振荡模式抑制效果一般。新型多频段稳定器PSS4B有望解决这一问题,然而PSS4B的多参数多自由度给其参数整定带来了困难,提出了一种基于等高线控制器波特图(contoured controller bode,CCBode)的PSS4B稳定器迭代设计方法。PSS4B稳定器由带通滤波器和相位补偿器串联组成。使用空间搜索方法调整相位补偿器以确保PSS4B的相频特性被限制在可接受的范围内。CCBode曲线有助于调整带通滤波器的幅频特性,从而在较宽的频带范围内具有更好的稳定性能。对Kundur的四机两区系统的测试分析证明了该方法的有效性。展开更多
为消除飞轮储能系统(flywheel energy storage system,FESS)稳定器与电力系统稳定器(power system stabilizer,PSS)间可能存在的相互负影响,提出将加入混沌算法和模拟退火思想的改进粒子群优化算法(improved particle swarmoptimization...为消除飞轮储能系统(flywheel energy storage system,FESS)稳定器与电力系统稳定器(power system stabilizer,PSS)间可能存在的相互负影响,提出将加入混沌算法和模拟退火思想的改进粒子群优化算法(improved particle swarmoptimization,IPSO)用于协调优化FESS稳定器与PSS参数。该算法通过混沌初始化和迭代中加入模拟退火思想来提高算法的效率和全局搜索能力。将多种运行方式下的所有特征值作为考察对象,在目标函数中同时考虑机电振荡模式和非机电振荡模式的性能,并通过IPSO算法协调优化各稳定器参数。在新英格兰10机系统算例中,应用IPSO算法协调优化的稳定器在不同运行方式下都能有效抑制系统振荡,表明了该方法的有效性和鲁棒性。在4机系统算例中,通过与逐个设计稳定器方法的比较可知,经IPSO协调优化的稳定器具有更好的阻尼效果,从而验证了该方法的优越性。展开更多
文摘This paper presents a new concept for damping electro-mechanical oscillations in large turbo generator. The proposed concept is based on coordination between Power System Stabilizer （PSS） and Thyristor Controlled Braking Resistor （TCBR）. This coordination will enhance the stability of the inertial and torsional oscillatory modes. The study is performed on system-I of the second IEEE benchmark for simulation of Sub-Synchronous Oscillations, using eigenvalue analysis and verified by detailed digital simulation. A dynamic fundamental frequency model for TCBR is developed. The pole placement technique is used to design the control system of TCBR and PSS. The shaft torque＇s following a disturbance is computed and analyzed. The obtained results indicate that substantial damping is achieved by the proposed coordination.
文摘为了演示和验证稳定器设计的就地相位补偿法在多机电力系统中的应用,介绍在多机电力系统中,就地补偿设计稳定器的2个应用实例。第1个实例是在多机电力系统中就地补偿设计电力系统稳定器（power system stabilizer,PSS）,阻尼电力系统局部模振荡。第2个实例是就地补偿设计附加在静态同步补偿器（static synchronous compensator,STATCOM）上的稳定器,抑制多机电力系统中的区域模振荡,并给出在一个16机电力系统中的应用计算和仿真结果。
文摘For solving the dynamic instability problem of Yunnan Provincial Power System (YNPS) and the South China Interconnected Power System (SCIPS), Lubuge Hydropower Station was chosen to install Power System Stabilizer (PSS). This paper introduces the principles and methods of parameter selection for PSS, in addition to field test. The test results show that the PSS installed can significantly improve the system damping.
文摘作为抑制低频振荡最有效的手段之一,电力系统稳定器(power system stabilizer,PSS)在电力系统中得到了广泛的应用。现今国内最广泛采用的PSS是PSS2B,不过由于其自身结构问题,PSS2B对频率较低的区域间振荡模式抑制效果一般。新型多频段稳定器PSS4B有望解决这一问题,然而PSS4B的多参数多自由度给其参数整定带来了困难,提出了一种基于等高线控制器波特图(contoured controller bode,CCBode)的PSS4B稳定器迭代设计方法。PSS4B稳定器由带通滤波器和相位补偿器串联组成。使用空间搜索方法调整相位补偿器以确保PSS4B的相频特性被限制在可接受的范围内。CCBode曲线有助于调整带通滤波器的幅频特性,从而在较宽的频带范围内具有更好的稳定性能。对Kundur的四机两区系统的测试分析证明了该方法的有效性。
文摘为消除飞轮储能系统(flywheel energy storage system,FESS)稳定器与电力系统稳定器(power system stabilizer,PSS)间可能存在的相互负影响,提出将加入混沌算法和模拟退火思想的改进粒子群优化算法(improved particle swarmoptimization,IPSO)用于协调优化FESS稳定器与PSS参数。该算法通过混沌初始化和迭代中加入模拟退火思想来提高算法的效率和全局搜索能力。将多种运行方式下的所有特征值作为考察对象,在目标函数中同时考虑机电振荡模式和非机电振荡模式的性能,并通过IPSO算法协调优化各稳定器参数。在新英格兰10机系统算例中,应用IPSO算法协调优化的稳定器在不同运行方式下都能有效抑制系统振荡,表明了该方法的有效性和鲁棒性。在4机系统算例中,通过与逐个设计稳定器方法的比较可知,经IPSO协调优化的稳定器具有更好的阻尼效果,从而验证了该方法的优越性。
