M. P. Dave

Bio: M. P. Dave is an academic researcher from Shiv Nadar University. The author has contributed to research in topic(s): Control theory & AC power. The author has an hindex of 3, co-authored 7 publication(s) receiving 44 citation(s).

Auxiliary-controlled static var system for damping subsynchronous resonance in power systems

Abstract: In this paper, a novel SVS controller known as the combined reactive power and frequency (C.R.P.F.) auxiliary controller has been developed and incorporated in the SVS control system located at the middle of a series-compensated long transmission line. The proposed SVS auxiliary controller stabilizes all the torsional modes over a wide operating range. A digital computer simulation study has been performed, using a nonlinear system model, to illustrate the effectiveness of the proposed SVS auxiliary controller.

Application of an auxiliary controlled static var system for damping subsynchronous resonance in power systems

Abstract: In this paper a novel concept of a static var system (SVS) auxiliary controller application for damping subsynchronous resonance in power systems has been proposed and demonstrated. An SVS controller, known as the combined reactive power and frequency (CRPF) auxiliary controller has been developed and incorporated in the SVS control system located at the middle of a series compensated long transmission line. The studies are conducted on a system having a similar spread of the torsional modes as the first IEEE benchmark model. The proposed SVS auxiliary controller stabilizes all the torsional modes over a wide operating range. A digital computer simulation study has been performed, using a nonlinear system model, to illustrate the effectiveness of the proposed SVS auxiliary controller.

Application of static var system auxiliary controllers to improve the transient performance of series compensated long transmission lines

Abstract: The paper presents a comparative assessment of the static var system (SVS) bus frequency and line reactive power auxiliary controllers for the transient performance enhancement of series compensated long transmission lines. A new controller, namely, the combined reactive power and frequency (CRPF) auxiliary controller, has been developed and incorporated in the static var control system located at the middle of the transmission line. The series compensation is provided at the sending end of the line. The application of the auxiliary controllers considerably enhances the system damping and the unstable system modes are stabilized. A digital computer simulation study has been performed to compare the effectiveness of the auxiliary controllers under disturbance conditions and the superiority of the (CRPF) auxiliary controller has been established over the other auxiliary controllers.

Static var system auxiliary controllers for transient stability improvement of power systems

Abstract: The paper presents a comparative performance evaluation of SVS auxiliary controllers for transient stability enhancement of long transmission lines over a wide operating range. The SVS has been considered located at the middle of the transmission line. The application of the auxiliary controllers considerably enhances the system damping and unstable system modes are stabilized. A new controller, namely Combined Reactive Power and Frequency (C.R.P.F.) auxiliary controller, has been developed for the SVS located at the middle of the transmission line. To illustrate the comparative effectiveness of the auxiliary controllers under disturbance condition, a digital computer simulation study has been performed.

Auxiliary controlled SVS and controlled series compensation for flexible AC transmission systems

Abstract: In this paper, the coordinated application of the controlled series compensation (CSC) and the SVS auxiliary controllers has been demonstrated for the dynamic and transient performance enhancement of a series compensated long transmission line. An SVS controller, known as the combined reactive power and frequency (CRPF) auxiliary controller, has been developed and incorporated in the SVS control system located at the middle of the transmission line. A digital computer simulation study, using a nonlinear system model, has been performed to illustrate the comparative effectiveness of the CSC and the SVS auxiliary controllers developed.

Voltage stability improvement in power systems using facts controllers: State-of-the-art review

Abstract: Flexible AC Transmission Systems (FACTS) devices have been used in power systems since the 1970s for the improvement of its dynamic performance This paper presents a review on the research and developments in the voltage stability improvement by using FACTS controllers In this paper several technical issues related to FACTS installations have been highlighted and performance comparison of different FACTS controllers have been discussed In addition, real-world installations and semiconductor technology development have been reviewed and summarized This paper also includes the main causes of voltage instability and power scenario in India In order to deal with the voltage stability problem, the solutions with FACTS-controllers provide voltage support and/or appropriately co-ordinated control actions Authors strongly believe that this survey article will be very much useful to the researchers for finding out the relevant references in the field of voltage stability improvement by using FACTS controllers in power system environments

Controlled series compensation in coordination with double order SVS auxiliary controller and induction M/C for repressing the torsional oscillations in power systems

Abstract: Development of high voltage and high current rated power semiconductor devices has led to the flexible ac transmission systems (FACTs). This paper deals with the controlled series compensation for enhancing the power transfer capability of transmission line in coordination with SVS (double order static var system) auxiliary controller and induction machine for repressing the torsional oscillations in power systems. The IEEE first benchmark model is considered for study. The role of controlled series compensation is mainly to repress large power oscillations while that of induction machine is to damp low power perturbations. The SVS auxiliary controller has a significant effect on both. Computer simulations show that the proposed scheme is effective in repressing the torsional oscillations for all levels of series compensation over a wide range of operating conditions.

Coordination of TCSC and SVC for improvement of power system performance with NN-based parameter adaptation

Abstract: A nonlinear design technique, DFL (direct feedback linearizing), is used to deduce the control law for the TCSC (thyristor controlled series compensator) and SVC (static VAR compensator). The coordination between the two pieces of equipment is also designed in the paper with the SVC treated as the supplement of the TCSC. When operation of the TCSC is constrained by the inherent limitation of equipment, the adjustable SVC can supply the auxiliary support to improve the overall performance. In order to adapt to the changes of the operating mode and active power of generators, a neural network (NN) is applied to determine the control parameters of the equipment. Analysis and simulation of a case study have proved the effectiveness of the nonlinear control strategy.

A comprehensive survey on enhancement of system performances by using different types of FACTS controllers in power systems with static and realistic load models

Abstract: In present time the power demand increases more rapidly in the power generation and transmission and distribution system sectors. For maintaining the power system stability and steady state operation of power systems causes from disturbance, faults and suddenly changing of the load, voltage instability, voltage swell, voltage sag, harmonics, and change in frequency, stability is the most important factor for the power systems. Due to instability, different problems occur in power systems such as fluctuation in voltage and frequency, which may cause damage or failure of power systems. This article presents taxonomical survey on optimization techniques for enhancement system performance by FACTS controllers such as Thyristor Controlled Series Capacitor (TCSC), Thyristor Controlled Phase Angle Regulator (TC-PAR), Static VAR Compensator (SVC), Dynamic Voltage Restorer (DVR), Sub-Synchronous Series Compensator (SSSC), Static Synchronous Compensator (STATCOM), distributed-STATCOM, Unified Power Flow Controller (UPFC), Generalized Unified Power Flow Controller (GUPFC), Unified Power Quality Conditioners (UPQC), Unified Dynamic Quality Conditioners (UDQC), Interlink Power Flow Controller (IPFC), GeneralizedInterlink Power Flow Controller (GIPFC) and Hybrid Power Flow Controller (HPFC) etc. in power systems with static and realistic load models. The system performances such as real and reactive power losses, power quality, voltage profile, power system oscillations, loadability of system, reliability and security of system, power system stability, bandwidth of operations, flexible operations, available power transfer capacity, system power factor, environmental etc. are enhanced by optimally placed different types of FACTS controllers in power systems with static and realistic load models. In this survey article will be very much helpful to the researchers and practitioners for finding out the relevant references in the field of enhancement system performances by different types of FACTS controllers in power systems with static and realistic load models.

Damping SSR in a series compensated power system

Abstract: In this paper, a new static VAr system (SVS) control scheme for damping torsional modes due to subsynchronous resonance (SSR) in a series compensated power system has been developed. The proposed scheme, called as the Narendra Kumar-subsynchronous resonance (NK-SSR) damping scheme, utilizes the effectiveness of combined reactive power and frequency (CRPF) SVS auxiliary controller in coordination with an induction machine-damping unit (IMDU) coupled to the T-G shaft. The studies are conducted on the first IEEE benchmark model. The scheme stabilizes all the torsional modes over a wide operating range of power transfer. The digital computer simulation study, using a nonlinear system model exhibits a remarkable improvement in the system transient performance. The optimal location of IMDU along the T-G shaft has been determined by performing eigen value analysis. It is found that locating IMDU after the IP turbine yields the maximum damping effect.