Wapss Digital Processing Unit

Wide-Area Power System Stabilizers WAPSSs are damping controllers used in power systems that employ data from Phasor Measurement Units PMUs. WAPSSs are capable of providing high damping rates for the low-frequency oscillation modes, especially the inter-area modes. Oscillation modes can destabilize power systems if they are not correctly identified and adequately damped. However, WAPSS

In this study, a data-driven control method called model-free adaptive control MFAC is introduced to WAPSS design. The MFAC algorithm is improved to meet the wide-area damping control

The installation of phasor measurement units brings about system-wide synchronized real-time measurements, which makes advanced closed-loop control of wide-area power systems WAPSs possible. In addition to uncertainties with the physical system, network imperfections are also critical for control performance and even stability of the system. This paper targets at wide-area damping control of

In this paper the design of a robust wide-area power system stabilizers WAPSS taking into account the effect of the time delay using Backtracking Search optimization is presented. In The wide area control design the remote signal is used as input for the power system stabilizer since it has better observability compared to the local signal. However the introduced time delay due to

The sampling rate for the MFAC-WAPSS implementation is chosen as 10 Hz according to the engineering experience . 3.2 MIMO power system description with MFAC controllers. In the whole process of the MFAC-WAPSS coordination design, interactions between the controllers and the power system noises should be taken into account.

WAPSS provides an additional input signal to the exciter of a generating unit to improve the dynamic characteristics of interconnected multi-machine power system . Fig. 1 illustrates the connection block diagram of the generator excitation system with WAPSS. The feedback signal of WAPSS is usually chosen as the inter-area frequency difference

The WAPSS-type controllers that provided the lowest objective function values for each method were chosen for the modal analysis and the non-linear analysis. Table 3 provides the WAPSS parameters of the MGO-based method. Table 4 provides the WAPSS parameters of the PSO-based method. Table 5 provides the WAPSS parameters of the GA-based method.

However, in practice the communication time-delay is variable in nature and WAPSS designed by considering fixed time-delays cannot perform satisfactorily when exposed to variable delays. The Lyapunov stability theory and linear matrix inequalities LMI approach are adopted in 13 for the design of wide-area damping controller with network delays.

This delay, resulting from factors like data processing and network delays in PMU communication systems, is specifically shown in Fig. 11, which compares the system's condition with and without

A wide-area measurement system with a phasor measurement unit PMU in the power network enhances the observability of the power grid under a wide range of operating conditions. This paper aims to propose a wide-area power system stabilizer WAPSS based on Gaussian quantum particle swarm optimization GQPSO using the wide-area signals from a