A Review on DG optimal planning strategy considering the bus voltage stability improvement of a radial type network

2020 ◽  
Author(s):  
Pravin Dangar ◽  
Jaydeepsinh Sarvaiya
Keyword(s):  
Voltage Stability ◽  
Optimal Planning ◽  
Planning Strategy ◽  
Bus Voltage

scholarly journals A computerized training program for teaching people how to plan better

2017 ◽  
Author(s):  
Falk Lieder ◽  
Paul M. Krueger ◽  
Frederick Callaway ◽  
Tom Griffiths
Keyword(s):  
Training Program ◽  
Intelligent Tutoring System ◽  
Process Tracing ◽  
Optimal Planning ◽  
Immediate Feedback ◽  
Planning Strategy ◽  
Computerized Training ◽  
Planning Strategies ◽  
Process Feedback

We present an intelligent tutoring system for teaching people effective planning strategies. Our training program combines a novel process-tracing paradigm that makes people’s latent planning strategies observable with an AI systems that gives people immediate feedback on how close their planning strategy is to optimal planning. Three experiments demonstrate that our method can automatically discover which planning strategies is optimal for a given class of problems and teach it to people. We find that the metacognitive process feedback provided by our method accelerates learning compared to no-feedback and conventional feedback on the quality of the selected actions, and the training effects are retained after a break even when the feedback is removed.

DC Bus Instability Driving by Photovoltaic Source with Constant Power Load

2013 ◽  
Vol 313-314 ◽  
pp. 853-857 ◽  
Author(s):  
M.N.M. Nasir ◽  
Awang Jusoh ◽  
Alias Khamis
Keyword(s):  
Voltage Stability ◽  
Current Source ◽  
Voltage Source ◽  
Constant Power ◽  
Dc Voltage ◽  
Power Load ◽  
Dc Bus ◽  
Bus Voltage ◽  
Lc Filter ◽  
Constant Power Load

This study presented the DC bus instability in distributed power system driving by Photovoltaic (PV) source with constant power load (CPL). The aim of this study is to investigate the effect of PV source towards the performances of DC bus voltage stability using constant power load. The system first was tested using linear DC supply as voltage source and CPL was modeled and connected to the voltage source through LC filter network. A passive damping circuit was chosen to stabilize the DC bus instability. The system was repeated using PV source. PV array was modeled based on the parameters obtained from a commercial PV data sheet. A circuitry simulation was performed under the similar design excluding the DC source in order to investigate DC bus instability. Results showed that the stability of DC bus become unstable when using linear DC voltage supply and slightly affected when using PV source. The instability phenomenon due to the negative incremental impedance of a constant power load can be overcome by using damping technique. For linear DC voltage source, DC bus voltage system tends to oscillate. However, with PV source which is actually a current source input seems not much affecting the DC bus voltage stability.

A Multi-Objective Framework to Improve Voltage Stability in A Distribution Network

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Arputha Aravinth ◽  
Vikas Anand Vatul ◽  
K Narayanan ◽  
K Muthukumar ◽  
Tomonobu Senjyu
Keyword(s):  
Power Loss ◽  
Voltage Stability ◽  
Distribution Network ◽  
Reducing Power ◽  
Stability Index ◽  
Radial System ◽  
Distributed Generator ◽  
Multi Objective ◽  
Different Types ◽  
Bus Voltage

Abstract This paper investigates the performance of a radial system while installing a Distributed Generator (DG) in existing Distribution Network (DN). The investigation has been performed with various types of DG units for different topologies of the DN. The present work uses a Voltage Stability Index (VSI) for identifying the location for installing a DG in the DN. A multi-objective framework is proposed to evaluate the size of the DG to be installed by reducing power loss and deviation in bus voltage. Genetic Algorithm (GA) is used to optimize the size of DG. The proposed method has been tested with different types of DG units on standard systems (IEEE-33 bus and IEEE-69) with different radial topologies of DN.

Optimal Planning Strategy for Large PV/Battery System Based on Long-Term Insolation Forecasting

2011 ◽  
Vol 131 (10) ◽  
pp. 1665-1671
Author(s):  
Atsushi Yona ◽  
Kosuke Uchida ◽  
Tomonobu Senjyu ◽  
Toshihisa Funabashi
Keyword(s):  
Optimal Planning ◽  
Battery System ◽  
Planning Strategy

On-line Assessment of Voltage Stability using Synchrophasor Technology

2017 ◽  
Vol 8 (1) ◽  
pp. 1 ◽  
Author(s):  
Satyendra Pratap Singh ◽  
S.P. Singh
Keyword(s):  
Real Time ◽  
Voltage Stability ◽  
Measurement Unit ◽  
The Real ◽  
Minimum Number ◽  
On Line ◽  
Successive Change ◽  
Observable Data ◽  
Bus Voltage

Series of blackouts encountered in recent years in power system have been occurred because either of voltage or angle instability or both together was not detected within time and progressive voltage or angle instability further degraded the system condition, because of increase in loading. This paper presents the real-time assessment methodology of voltage stability using Phasor Measurement Unit (PMU) with observability of load buses only in power network. PMUs are placed at strategically obtained location such that minimum number of PMU’s can make all load buses observable. Data obtained by PMU’s are used for voltage stability assessment with the help of successive change in the angle of bus voltage with respect to incremental load, which is used as on-line voltage stability predictor (VSP). The real-time voltage phasors obtained by PMU’s are used as real time voltage stability indicator. The case study has been carried out on IEEE-14 bus system and IEEE-30 bus systems to demonstrate the results.

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