Voltage stability index-based reactive power compensation scheme ¬リニ
نویسندگان
چکیده
Reports of various committees set up to review the 2003 North American major power outages pointed out that a major exacerbating factor has been lack of situational awareness by power system operators. To improve reactive power compensation and contribute to the mitigation of power outages associated with the present near-limit operated commercialized grid, a bus voltage stability (BVS) index based reactive power compensation scheme has been developed. BVS index is a hybrid voltage stability computation model involving the two machine modeled L-index and a complex power P-transmission line structure modeled Ls-index developed by the authors. The current regional wheeling of power across transmission distance far beyond the two machine model has necessitated the development of a novel Ls-index model suitable for long lines. The composite scheme was then incorporated into Newton– Raphson’s (N–R) power flow which encompasses multiple shunt devices (multi-shunt). This arrangement provided a knowledge based system for power system monitoring. Results obtained from applying the developed models and schemes in the IEEE 300 bus system with zoning and under varying operating conditions showed the system’s capability to provide improved system monitoring and optimal compensation based on availability. 2015 Elsevier Ltd. All rights reserved.
منابع مشابه
A Nonlinear Voltage Stability Index based on Vector Analysis Method and Measurements of Active and Reactive Powers of Power System
This paper proposes a new voltage stability assessment method based on vector analysis method. This index extraction process relies on measurements of active and reactive powers from connected buses to the generator buses. Therefore, a limit for beginning of voltage collapse is determined based on the maximum power transfer theory. On the other hand, when the system requires load shedding, a ne...
متن کاملA Novel Index for Online Voltage Stability Assessment Based on Correlation Characteristic of Voltage Profiles
Abstract: Voltage instability is a major threat for security of power systems. Preserving voltage security margin at a certain limit is a vital requirement for today’s power systems. Assessment of voltage security margin is a challenging task demanding sophisticated indices. In this paper, for the purpose of on line voltage security assessment a new index based on the correlation characteristic...
متن کاملDesign of a New IPFC-Based Damping Neurocontrol for Enhancing Stability of a Power System Using Particle Swarm Optimization
The interline power flow controller (IPFC) is a concept of the FACTS controller for series compensation which can inject a voltage with controllable magnitude and phase angle among multi lines. This paper proposes a novel IPFC-Based Damping Neuro-control scheme using PSO for damping oscillations in a power system to improve power system stability. The addition of a supplementary controll...
متن کاملVoltage Imbalance Compensation for Droop-Controlled Inverters in Islanded Microgrid
In this paper, a new control strategy is proposed for implementation in low-voltage microgrids with balanced/ unbalanced load circumstances. The proposed scheme contains, the power droop controllers, inner voltage and current loops, the virtual impedance loop, the voltage imbalance compensation. The proposed strategy balances the voltage of the single-phase critical loads by compensating the im...
متن کاملImproving Voltage Stability Margin Using Voltage Profile and Sensitivity Analysis by Neural Network
This paper presents a new approach for estimating and improving voltage stability margin from phase and magnitude profile of bus voltages using sensitivity analysis of Voltage Stability Assessment Neural Network (VSANN). Bus voltage profile contains useful information about system stability margin including the effect of load-generation, line outage and reactive power compensation so, it is ad...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016