A Simple Scheme for Wide Area Detection of Impending Voltage Instability

Sodhi, Ranjana; Srivastava, S. C.; Singh, S. N.

doi:10.1109/tsg.2011.2180936

Cited by 59 publications

(25 citation statements)

References 17 publications

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“…At the voltage collapse point, EGFCR = 0, aSQ�ma x i = Qgk ' plmax , = Pgk at this point, then V iI Id max 2 vi --"--"--: :---Pg max = --+ X ; Xs li d max = I fdk (6) This forms the basis of the EGFCR index and it is defined as the difference between the maximum field current of the generator at the voltage collapse point and the generator field current at the kth operating time. This is given mathematically as:…”

Section: Effective Generator Field Current Reserve Indexmentioning

confidence: 99%

Wide area Voltage Stability assessment based on generator-derived indices using Phasor Measurement Units

Adewole¹,

Tzoneva²

2015

2015 International Conference on the Industrial and Commercial Use of Energy (ICUE)

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The continuous increase in energy demand without a concomitant increase in generation and transmission capabilities inevitably leads to power system instability and consequently blackouts. This paper proposes and investigates the application of generator-derived Voltage Stability (VS) indices using synchrophasor measurements from dispersed Phasor Measurement Units (PMUs) for real-time monitoring and situational awareness in power systems. Three VS indices derived from the capability parameters of synchronous generators in the power system are presented, and used in the prediction of the power system's margin to voltage collapse. The proposed generator-derived VS indices were tested using the New England 39-bus benchmark test system modelled using RSCAD software. Real-time hardware-in-the-loop simulations involving a lab-scale testbed using the Real-Time Digital Simulator (RTDS), PMUs, Phasor Data Concentrators (PDCs), Programmable Logic Controller (PLC), communication network switches, and GPS satellite clock were carried out in order to test the proposed VS indices for various system operating conditions encompassing credible contingencies, increased system loading, operation of transformer Under-Load Tap Changers (ULTCs), and generator Over Excitation Limiters (OXLs). The results obtained showed that the VS indices provided an exact snap-shot of the grid in real-time. The VS indices would be useful in the design of System Integrity Protection Schemes (SIPS) that are capable of preserving the integrity of the grid during disturbances and parametric changes, thereby preventing system blackouts.

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Section: Effective Generator Field Current Reserve Indexmentioning

confidence: 99%

Wide area Voltage Stability assessment based on generator-derived indices using Phasor Measurement Units

Adewole¹,

Tzoneva²

2015

2015 International Conference on the Industrial and Commercial Use of Energy (ICUE)

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“…15,[27][28][29] For stability assessment, real-time monitoring of load and generator buses is very important. 15,[27][28][29] For stability assessment, real-time monitoring of load and generator buses is very important.…”

Section: Load and Generation Bus Connectivitymentioning

confidence: 99%

PMU‐based power system component monitoring scheme satisfying complete observability with multicriteria decision support

Chatterjee

Ghosh

Roy

2019

Int Trans Electr Energ Syst

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Summary Modern power system operates in stressed conditions due to fickle loads, high penetration of renewables, and complex control strategies. The failure of any power system asset may lead to protract power interruption or even catastrophic failures. Synchrophasor‐based extensive research advancements in wide area measurement, protection, and control (WAMPAC) systems are solving critical operation and control problems of the power system. This paper proposes a new combinatorial methodology for monitoring the prime power system components in preference to complete observability of the system. A multicriteria decision support (MCDS) approach, analytical hierarchy process (AHP), has been used to prepare a ranking according to component bus priority for synchrophasor measurement unit installation. The priority list is further processed with intelligent search technique (IST) to compute the optimal solution for synchrophasor meter placement, ensuring complete observability, maximum measurement redundancy, and coverage of prime system components with direct monitoring. Some practical contingencies related to synchrophasor meters placement problem like single meter loss or line outage have also been considered for the case studies. The efficiency of the proposed method has been verified with IEEE 14‐bus, 24‐bus, 30‐bus, 57‐bus, and 118‐bus and New England 39‐bus test systems. To prove the superiority of the method, in essence of synchrophasor meter placement problems, the outcome has been compared with some of the existing methods from the literature.

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“…Phasor-assisted state estimation (Sodhi et al, 2010b) Dynamic phasor estimation (Banerjee and Srivastava, 2012) Machine rotor angle estimation using phasor measurements for transient stability prediction (Tripathy et al, 2010) WAMS-based critical mode identification for small signal stability assessment and control (Tripathy et al, 2011) Synchrophasor-based voltage stability assessment (Sodhi et al, 2012) Optimal frequency and voltage stability based load shedding (Seethalekshmi et al, 2011a) Wide area measurement based adaptive distance protection (Seethalekshmi et al, 2011b;Seethalekshmi et al, 2012) Model validation and wide area control (Padhy et al, 2012) Some of the above analytics are being developed in-house for implementation in the URTDSM system in India.…”

Section: Smart Transmission Grid Using Synchro-phasor Technologymentioning

confidence: 99%

Electrical power transmission and energy management system

Sen¹

2015

Proceedings of the Indian National Science Academy

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Electrical power transmission system forms an important part of the electricity network required to transfer bulk amount of power produced at remotely located generating stations to the load centres. In most of the countries, including India, the electricity sector has a vast interconnected system of generation, transmission and distribution network, which requires modern computer-aided operation and control system. Such a system is called 'Energy Management System (EMS)', conventionally based on Supervisory Control and Data Acquisition (SCADA) features. With the recent development of dielectric as well as conducting materials, power electronic devices, information technology and automation system, a new class of transmission and control equipment is being used and the energy management system is also being modernized. Recent blackouts in India and other countries have prompted the use of Wide Area Monitoring Control and Protection System (WAMCPS) based on synchrophasor technology for real time monitoring of dynamic states and security of the system. This paper describes the present status and future developments in the electrical power transmission, energy management system, and emerging technologies, specifically in the Indian context.

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A Simple Scheme for Wide Area Detection of Impending Voltage Instability

Cited by 59 publications

References 17 publications

Wide area Voltage Stability assessment based on generator-derived indices using Phasor Measurement Units

Wide area Voltage Stability assessment based on generator-derived indices using Phasor Measurement Units

PMU‐based power system component monitoring scheme satisfying complete observability with multicriteria decision support

Electrical power transmission and energy management system

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