A New Power Flow Control and Management Method Based on Multi-Line Transmission/Distribution Networks

2012 ◽  
Vol 192 ◽  
pp. 380-384
Author(s):  
Yong Sheng Xu
Keyword(s):  
Power Plant ◽  
Power Flow ◽  
Distribution Networks ◽  
Solar Power Plant ◽  
Pv System ◽  
Power Flow Control ◽  
Flexible Control ◽  
Solar Plant ◽  
Management Method ◽  
Control And Management

A new concept of using a PV solar power plant as interline PV system is introduced in this paper. As the name suggests, the interline PV system interconnects two (possibly more) transmission/distribution lines by reconfiguring existing PV solar plant inverters. This newly developed system thus can act as a FACTS device providing a flexible control over both active and reactive powers on multiple lines simultaneously.

scholarly journals Interconnection Study of a 3 MWp Solar Farm on 20 kV Distribution System Considering Power Flow and Short Circuit

ELKHA ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 84
Author(s):  
Nadyanti Larasati ◽  
Amien Rahardjo ◽  
Hanindito Titah Prameswara ◽  
Faiz Husnayain
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Solar Energy ◽  
Power Flow ◽  
Solar Power ◽  
Short Circuit ◽  
Distribution Networks ◽  
Solar Power Plant ◽  
Medium Voltage ◽  
A Value

Currently, renewable energy is under review so that its use can be more widespread in the future. One of the renewable energy sources that are commonly used is solar energy through solar cell technology that can convert solar energy into electrical energy and then becomes one of the components that makes up the solar power plant. The use of the solar power plant can be interconnected with distribution networks in electric power systems, both medium-voltage networks and low voltage networks. In this study, a 3 MWp capacity of solar power plant was conducted with the medium-voltage network system of X City. This interconnection study consisted of power flow and short circuit studies using ETAP 12.6.0 software. The results of the power flow study show the voltage level of each bus has increased by 0.293%-0.926% after interconnection with the solar power plant system, with a value that still matches the SPLN 1:1978 standard of 90% to 105%. Besides, the results of short circuit study show the value of the three-phase short circuit fault current experienced a change in value that is not too significant, with an increase of 1-37 A and a decrease of 1-5 A, with a value that is still according to the protection component rating standard of 25 kA.

scholarly journals Design and Implementation of the Isolated Bidirectional DC-DC Converter

2021 ◽  
Vol 2125 (1) ◽  
pp. 012056
Author(s):  
Yiyang Yuan
Keyword(s):  
Power Flow ◽  
Distribution Networks ◽  
Voltage Regulation ◽  
Fault Isolation ◽  
Energy Access ◽  
Power Flow Control ◽  
Electrical Isolation ◽  
New Energy ◽  
Converter Topology ◽  
Increasing Demand

Abstract With the development of intelligent distribution networks and the increasing demand for new energy access, the isolated bidirectional dc-dc converter has become a key link in modern energy transformation systems. In order to realize the functions of electrical transformation and electrical isolation of dc voltage, this paper proposes a structure of isolated bidirectional dc-dc converter, and analyzes it in detail. The proposed isolated bidirectional dc-dc converter can not only realize voltage transformation, but also have voltage regulation and fault isolation functions. Finally, based on the MATLAB/Simulink simulation platform, the proposed isolated bidirectional dc-dc converter topology is built and verified by simulation. The structure of isolated bidirectional dc-dc converter not only has the functions of voltage transformation and electrical isolation, but also has fault isolation, power flow control and other functions.

scholarly journals Improving the efficiency of distribution electric networks of railways based on the multi-agent mode management method

Vestnik IGEU ◽  
2019 ◽  
pp. 54-63
Author(s):  
V.T. Cheremisin ◽  
E.A. Tretyakov
Keyword(s):  
Flow Control ◽  
Power Flow ◽  
Distribution Networks ◽  
Electrical Network ◽  
Distributed Objects ◽  
Electric Networks ◽  
Power Sources ◽  
Power Flow Control ◽  
Multi Agent ◽  
Agent Control

With the increase in observability and controllability of regimes, the development of methods for managing distributed objects of the electrical network is becoming more and more important. The main research directions in smart grids are based on the theory of fuzzy sets, genetic algorithms, neural networks, stochastic control, spectral graph, bilinear matrix inequality constraints. They are aimed at solving multicriterion optimization problems of electric networks with distributed objects and are computationally-demanding and time-consuming. Meanwhile, the methods of multi-agent control of the power supply system based on the parallelization of information flows and coordination of the operation of distributed linear regulators are becoming more common. The purpose of this study is to develop methods for controlling the operating modes of smart distribution electric networks of railways using an agent-based approach for stabilizing voltages within specified limits and reducing electric power losses. This goal can be achieved by solving the problems of developing an algorithm for managing power flows based on the coordinated work of active and reactive power sources and principles of demand management of active consumers. The multi-agent power flow control was realized in the AnyLogic program, the simulation modeling of the electrical network modes was performed in Matlab Simulink with assumptions of linear characteristics of voltage loads. A method has been developed to control the operation modes of smart distribution electric networks of railways based on the presented power flow control algorithm, the hallmarks of which are the use of linearized equations for determining control actions in small increments, which allows high speed data analysis in real time without calculating steady-state modes with disturbances. The obtained simulation results prove the validity of power flow control methods for voltage stabilization based on multi-agent control and the possibility of their practical implementation on modern equipment in smart distribution networks of railways.

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