Power system stabilizers thesis

It is an experiment based tuning method. Frequency response tests are at the core of the method. The feasibility of this tuning method is illustrated and verified for the real power system in the power control lab of the PCS Company.

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Our experiments show that after tuning, system damping is increased and the oscillation is reduced that proves the effectiveness of our PSS tuning method. Tang, Bixiang, "Parameter tuning and experimental results of power system stabilizer" LSU Master's Theses. Electrical and Computer Engineering Commons. Advanced Search.


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Open Access. First Online: 15 August The control principle of LPSS is to produce a component of electrical torque in phase with the rotor speed deviations via the auxiliary control on the excitation system [ 18 ].

It consists of one control gain, one washout block, and two phase compensation blocks, as shown in Fig. Open image in new window. The objective of the sequential design is to assign each LPSS and HVDC-WASC to play an effective damping ability at the around of the concerned oscillation frequency, by means of determining the phase compensation blocks one by one. To reach this objective, the practical design methods, i.

In addition, for each step, the root locus analysis is applied to check the effectiveness of the designed phase compensation blocks.

Analysis of IEEE Power System Stabilizer Models

The guideline for the sequential deign is planned as follows: 1 For HVDC-WASC, initially design the lead-lag blocks for phase compensation at the around of the inter-area oscillation frequency 0. The pattern search algorithm is applied to solve 1 , which includes three parts. The machine test system is used to illustrate the proposed method, as shown in Fig. The detailed system description including network data and dynamic data for the generators and the excitation systems can be found in [ 17 ].

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Design of Power System Stabilizer

It can be seen that after 15 steps, the sequential design proposed in Sect. After this, all the control gains are optimized by means of the global optimization proposed in Sect. The eigenvalue analysis is used to validate the proposed method. It is clear that after optimization, all the dominant eigenvalues are placed into the prospective region where the damping ratio is more than 0.

It can be seen that all the damping ratios are increased when the optimized controllers are used in the system. It can be seen that all the eigenvalues are placed at the acceptance region.

Mitigating Low Frequency Oscillations in Interconnected Power System

It can be seen that when the initial controllers are used, the line outage excites serious power oscillations, which leads to system collapse. It can be seen that the oscillations are damped effectively when using the optimized control parameters.


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From Fig. Bose A Smart transmission grid applications and their supporting infrastructure. Xue YS Some viewpoints and experiences on wide area measurement systems and wide area control systems. Mao XM, Zhang Y, Guan L et al Improving power system dynamic performance using wide-area high-voltage direct current damping control.

Power System Stabilizer

Rogers G Power system oscillations. Learn more. Search now. There was a problem with your request. Please fill in required fields.

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Sign up. Nowadays, new excitation systems for medium-power and high-power generators are almost always supplied with an integrated PSS.

For existing power stations, where a complete replacement of the excitation systems is not planned, there are good reasons to equip the existing voltage regulators with PSS. Increasingly, network operators demand that the power producers make an active contribution to network stability. In many cases, this can increase the working range of the generator, especially in terms of reactive power consumption capacity.


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  • Analysis of IEEE Power System Stabilizer Models.