scholarly journals Determining the Electrical Losses in the Electrical Supply Line of a Sprinkler Using Autonomous Asynchronous Generator

2021 ◽  
Vol 2096 (1) ◽  
pp. 012191
Author(s):  
S V Oskin ◽  
N S Barakin ◽  
A A Kumeyko
Keyword(s):  
Reactive Power ◽  
Electrical Equipment ◽  
Reactive Power Compensation ◽  
Excitation Current ◽  
Reactive Component ◽  
Motor Current ◽  
Supply Line ◽  
Asynchronous Generator ◽  
Booster Pump ◽  
Electrical Supply

Abstract The use of an asynchronous generator to power the electrical equipment of the sprinkler is a comprehensive solution that allows you to reduce electrical losses in the supply line. The problem of reactive power compensation for sprinkler machines can be solved by dividing capacitor units into main and additional, the main one is to create the required excitation current in the asynchronous generator, and the additional one is to compensate for the reactive component of the electric motor current. Moreover, an additional unit is installed directly at the outputs of the booster pump to unload the line, and the main capacitor unit is installed near the asynchronous generator.

On the issue of improving the efficiency of power systems and substantiation of reactive power compensation in electric networks

2021 ◽  
Vol 13 (4) ◽  
pp. 267-272
Author(s):  
M. M. Sultanov ◽  
A. V. Strizhichenko ◽  
I. A. Boldyrev ◽  
O. I. Zhelyaskova ◽  
E. A. Voloshin ◽  
...  
Keyword(s):  
High Voltage ◽  
Active Component ◽  
Reactive Power ◽  
Voltage Drop ◽  
Reactive Power Compensation ◽  
Power Losses ◽  
Reactive Component ◽  
Voltage Range ◽  
Electric Network ◽  
Active And Reactive Power

Reactive power in the power system negatively affects the operating mode of the electric network, additionally loading high-voltage lines and transformers, which leads to an increase in power losses, as well as to an increase in voltage drops. The influence of active and reactive power components of voltage in the network nodes is different and is overwhelmingly determined by the ratio of active and reactive components of the resistance elements of the electric system. In high-voltage networks, the reactive component of the resistance significantly exceeds the active component, and therefore the flow of reactive current through the network leads to a greater voltage drop than the flow of the active component of the current. The transfer of reactive power can lead to exceeding the normalized voltage range in the load nodes. To reduce power losses and voltage drop in the elements of the electric network, synchronous compensators (SC), static capacitor banks (SCB), static thyristor compensators (STC), controlled shunt reactors (CSR) can be used. The cost of production and transmission of active and reactive power are different, and when choosing the power of reactive power compensation means, it is necessary to take into account the costs and compare them with the resulting effect, which differs for large and small values of reactive power when this is reduced by the same amount. To assess the feasibility of application of compensatory devices, and to choose their type and locations of installation, relevant calculations are required. An empirical criterion is proposed for preliminary assessment of the technical feasibility of reactive power compensation. It enables to identify the network sections and nodes, which require reactive power compensation and should be considered in greater detail.

scholarly journals New proposed fractional-polynomial functions: new recommendation for overcome the imbalance in three-phase systems

2021 ◽  
Vol 12 (4) ◽  
pp. 2243
Author(s):  
Q. S. Vu ◽  
Bui Vu Minh ◽  
Minh Tran ◽  
N.V. Korovkin
Keyword(s):  
Transmission Lines ◽  
Reactive Power ◽  
Electrical Equipment ◽  
Reactive Power Compensation ◽  
Polynomial Functions ◽  
Power Losses ◽  
Fractional Polynomial ◽  
Three Phase ◽  
Phase Systems ◽  
Optimal Calculation

Non-linear loads or load imbalances, etc., are the typical causes of asymmetric operation of three-phase systems. The appearance of inverse (positive) and homopolar (zero) symmetric components cause damage to the systems and electrical equipment and increase the power losses on the transmission lines. Reactive power compensation is one of the solutions that can overcome this asymmetry. The difficulty that exists in many different methods is the optimal calculation of the value of the compensator. In this paper, a new method to overcome these problems is proposed and investigagted. The proposed method is based on the fundamental electrical quantities (voltages and currents) on the controllable values of the static compensation devices and overcoming of the asymmetric operation regime in the three-phase systems.

Algorithm of Fundamental Equivalent Susceptance of TCR Type SVC

2012 ◽  
Vol 457-458 ◽  
pp. 1047-1051 ◽  
Author(s):  
Qing Bo Meng ◽  
Gui Xiang Zhang
Keyword(s):  
Real Time ◽  
Active Component ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Control Performance ◽  
Reactive Component ◽  
Power Theory ◽  
Instantaneous Reactive Power Theory ◽  
Instantaneous Reactive Power ◽  
Relationship Of

The paper expounds the topology of TCR type SVC and proposes the controller’s implementation. Based on instantaneous reactive power theory, the paper ascertains the overall algorithm on SVC reactive power compensation. It can be refined to three steps: the extraction of active component and reactive component of fundamental, the modeling of compensation susceptances required and the four components of fundamental, and the establishing relationship of the fundamental equivalent susceptance of TCR and the triggering angle.The control performance of the algorithm is valued on accuracy and real-time.

Research on Reactive Power Compensation Algorithm Based on Game Theory in Wind Farm

2010 ◽  
Vol 439-440 ◽  
pp. 989-993 ◽  
Author(s):  
Xiang Zheng Xu ◽  
Qi Chen
Keyword(s):  
Game Theory ◽  
Wind Farm ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Algorithm Analysis ◽  
Generator System ◽  
Analysis Process ◽  
The Game Theory ◽  
Asynchronous Generator ◽  
The Moment

In current, constant speed of asynchronous generator system has been used wind farm in China areas. But because of that abilities of reactive power control helpless, reactive power have been provided by grid. In view of the above situation, the feasible measures are adopted in the wind dynamic reactive power compensation devices. The asynchronous machine transient process used reactive power to keeping voltage of machine has been provided. This article introduced the Game Theory in economics to the area of reactive power compensation. This new method of the share of reactive power in wind farm, will improve wind farm reactive power compensation too vague to efficient in the moment. In the meantime, the share of reactive power algorithm analysis process have bee bullied in this paper. For the research in the future, it proposed supplementary opinions.

scholarly journals A Simulation Study on Controlling Excitation Current of Synchronous Motor and Reactive Power Compensation via PSO Based PID and PID Controllers

2018 ◽  
pp. 103-110
Author(s):  
Ahmet Gani ◽  
Hakan Acikgoz ◽  
Okkes Fatih Kececioglu ◽  
Erdal Kilic ◽  
Mustafa Sekkeli
Keyword(s):  
Power Systems ◽  
Power System ◽  
Power Factor ◽  
Reactive Power ◽  
Synchronous Motor ◽  
Reactive Power Compensation ◽  
Pid Controllers ◽  
Excitation Current ◽  
Industrial Facilities ◽  
Synchronous Motors

The increasing need for energy requires using existing energy sources more efficiently. Because it is the active power that supplies useful power for industrial facilities, reactive power must be minimized, and supplied by another source instead of electrical grid. Therefore, reactive power supplied by the grid can be reduced via by correcting power factor of the grid. In electrical power systems, power factor correction is called reactive power compensation. Generating reactive power during excessive excitation, synchronous motors are used as dynamic compensators in power systems. Synchronous motors are more cost-effective for industrial facilities when they are used to generate mechanic power and compensate reactive power, which increases the efficiency of industrial facilities. There are various studies focusing on the efficiency, capacity and stability of the power system via reactive power compensation in the literature. In today's world, there are numerous optimization techniques inspired by biological systems. One of these techniques is Particle Swarm Optimization (PSO) inspired by the movements of swarms of birds. This study focuses on the reactive power compensation of a power system by controlling the excitation current of a synchronous motor via PSO based PID and Ziegler Nichols (Z-N) based PID controllers.

REACTIVE POWER COMPENSATION MINIMUM LOAD TRANSFORMERS WITH A SECONDARY VOLTAGE 0 4 KV

2018 ◽  
Vol 28 (104) ◽  
pp. 154-160
Author(s):  
I. Doroshenko, ◽  
◽  
T. Druchyna, ◽  
Yu. G. Sarahman ◽  
Keyword(s):  
Reactive Power ◽  
Reactive Power Compensation ◽  
Secondary Voltage
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