An Efficient Approach To Voltage Stability Evaluation Using Tellegen’s Equations

Mohammadi, Payman; Lesani, Hamid

doi:10.11591/ijece.v3i2.1964

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…These controllers try to correct the load bus voltages and maintain them within an acceptable range. Some of these also have short-term overload facilities like the generator field current limiters [26]. Due to different time scale operation characteristics of these devices, they may manifest voltage instability.…”

Section: Voltage Stabilitymentioning

confidence: 99%

A statistical jacobian application for power system optimization of voltage stability

Larik

Mustafa

Panjwani

2019

IJEECS

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<p>Despite a tremendous development in optimal power flow (OPF), owing to the obvious complexity, non-linearity and unwieldy size of the large interconnected power systems, several problems remain unanswered in the existing methods of OPF. Seizing specific topics for maximizing voltage stability margin and its implementation, a detailed literature survey discussing the existing methods of solution and their drawbacks is presented in this research. The phenomenon of voltage collapse in power systems, methods to investigate voltage collapse, and methods related to voltage stability are briefly surveyed. Finally, the study presents a statistical method for analyzing a power system through eigenvalue analysis in relation to the singular values of the load flow Jacobian. Future study may focus on changes in theories in conjunction with large power systems.</p>

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Section: Voltage Stabilitymentioning

confidence: 99%

A statistical jacobian application for power system optimization of voltage stability

Larik

Mustafa

Panjwani

2019

IJEECS

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“…This thesis considers the most recent methods used in reactive power compensation by a new technology (DSTATCOM) as:-1. DSTATCOM control stability methods [43,44,50,51] 2. Steady-state modeling of DSTATCOM methods [42][43][44][45] 3.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Improvement of Power Quality in Primary Distribution Systems Based on Static-Var Compensators

2023

ISDE

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A flexible AC Transmission Systems (FACTS) is a new technology offers a fast and reliable control over the transmission and distribution parameters like voltage and phase angle between the sending end voltage and receiving end voltage. Distribution static synchronous compensator (DSTATCOM) is a second generation member of the (FACTS) controllers. Reactive power compensation is an important aspect in the control of distribution systems. Reactive current in addition to increasing the distribution system losses, introduces voltage drop at lead point and finally it causes poor power quality in power systems. Primary radial distribution feeders have high resistance to reactance ratio, which causes voltage drop and high power loss in radial distribution systems. providing high demanding power to entire load while maintaining voltage magnitude at acceptable range is one of the major system constraints, using of capacitor banks to improve the reactive power have not quite enough at high reactive power feeder, because it have more slow in step by step response and have not capable to generate continuously variable reactive power.In some primary distribution feeders at the state of Khartoum, it is observed that there are some appropriate drops in voltage and quality service at high reactive power loads although some individual capacitor banks have been connected at these feeders, from here we researched for a new technology to overcome this problem. A steady-state model of (DSTATCOM) is proposed and developed to compensate the reactive power by using a Voltage Source Converter (VSC) with Pulse Width Modulation (PWM) and cascade control of four direct proportional integral controllers (PI) in synchronous reference frame. The detailed modeling and control design of (DSTATCOM) with specific typical radial primary distribution feeders (industrial, commercial, residential) are presented and implemented along necessary mathematical model equations in the Matlab software.Simulation schemes of (DSTATCOM) are done with help of control block diagrams and stability analysis. Load flow is an important method for analysis, operation and planning studies of any power system in a steady-state condition. In this research backward forward sweeps load flow method (Kirchhoff's Laws) has been proposed rather than Newton-Raphson and Fast decoupled methods because the distribution feeders have a high R/X ratio which make the systems are ill-conditioned iterations analysis. (DSTATCOM) was installed on specific typical radial feeders at the (DSTATCOM) which using for distribution lines and load compensation has been the subject of considerable interest beside it is a new technology for a good power quality solution.

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Voltage Stability Analysis for AC/DC System With VSC-HVDC

Liu

Zheng

2019

2019 IEEE 2nd International Conference on Electronics Technology (ICET)

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An Efficient Approach To Voltage Stability Evaluation Using Tellegen’s Equations

Cited by 6 publications

References 12 publications

A statistical jacobian application for power system optimization of voltage stability

A statistical jacobian application for power system optimization of voltage stability

Improvement of Power Quality in Primary Distribution Systems Based on Static-Var Compensators

Voltage Stability Analysis for AC/DC System With VSC-HVDC

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