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The rapid expansion in power transmission for the integration of large-scale renewables complemented by infrastructure reinforcements in the form of series compensation poses the threat of subsynchronous resonance (SSR). However, existing and future high-voltage direct current (HVDC) links can be effectively used to mitigate this undesirable phenomenon. In this line, this paper presents an auxiliary...
A formal analysis of torsional interactions -a form of subsynchronous resonance (SSR)- in series-compensated systems featuring voltage source converter (VSC) based high-voltage direct-current (HVDC) links are investigated in this paper. Two ac/dc systems are studied. The first one consists of the IEEE First Benchmark Model for SSR studies which has been upgraded with a point-to-point VSC-based HVDC...
This paper presents a Particle Swarm Optimization (PSO) based algorithm to find the optimal location and setting of FACTS devices in order to improve the loading margin as well as voltage stability and small signal stability. Recently, the electric load demand has been continuously growing all over the world. The rapid increase in load demand enforces power systems to operate closer to the limits...
Distributed Generators are gaining widespread applications around the world to facilitate the need for expanding generation capacity to meet the increasing load demand. However the integration and high penetration of distributed generations into the power system poses many issues that need to be addressed carefully. The main limiting factors for synchronous operation of distributed generators are...
Recent studies suggest that in medium and long terms, distributed solar photo-voltaic generator (SPVG) will become commercially so attractive that large-scale implementation of this type can be seen in many parts of the world. The increase in the amount of renewable energy will cause stability and security issues in power system. An effective method is used to find out the maximum allowable penetration...
It is widely accepted that transient stability is an important aspect in designing and upgrading electric power system. This paper covers the modeling and the transient stability analysis of the wind integrated IEEE 14 test bus system. This paper investigates the enhancement of transient stability using central area controller in a wind integrated power system with storage. Wind energy is gaining...
We present the effects of preprocessing and training parameters in stability index computation using neural network. Two method of index computation was done. In first method active and reactive power are given as net inputs and bus voltage is set as target. From the predicted bus voltage, stability index is computed. In the second method P, Q, V and power factor is given as input and L-index is given...
Power system congestion has become one of the most significant problems faced by system operators (SO) around the globe after the restructuring of the electricity industry. It creates hurdle in the smooth functioning of deregulated electricity market and causes an increased cost associated with it. So the investigation of congestion management techniques is of vital interest. This paper presents a...
Voltage instability is a major problem that is attracting worldwide interest because of its consequence of voltage collapses. These days' Kerala power system operate closer to their stability limits because of the economic considerations, making large amount of power transfer from long distance and an inadequate supply of reactive power which contribute to system voltage instability that eventually...
Kerala State Electricity Board (KSEB) as many other utilities uses breaker switched capacitor for voltage support and reactive power compensation in the largest Grid substation at Kalamassery. At present the installed capacity of the capacitor bank does not fully match with the system requirement which leads to a voltage collapse. Optimizing the use as an economical reactive power source is the key...
Voltage instability is a major issue that attracts worldwide interest because of its consequence of voltage collapses. These days power systems operate closer to their stability limits, transferring large amounts of powers from long distance and an inadequate supply of reactive power contribute to system voltage instability and eventually lead to voltage collapse. So estimating the margin in the loadability...
The efficient and optimum economic operation and planning of electric power generation systems have always occupied an important position in the electric power industry. Main aim of electric power utilities is to provide high quality, reliable power supply to the consumers at the lowest possible cost while operating to meet the limits and constraints imposed on the generating units. This formulates...
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