The Influence of Gas Turbine Power Plants on Frequency Control in the Western Part of the Kazakhstan Electric Power System

Vestnik MEI ◽  
2019 ◽  
Vol 6 ◽  
pp. 21-29
Author(s):  
Alibek U. Isingaleev ◽  
◽  
Oleg N. Kuznetsov ◽  
Keyword(s):  
Power System ◽  
Electric Power ◽  
Gas Turbine ◽  
Power Plants ◽  
Frequency Control ◽  
Electric Power System

scholarly journals Transient Impact Analysis of High Renewable Energy Sources Penetration According to the Future Korean Power Grid Scenario

2018 ◽  
Vol 10 (11) ◽  
pp. 4140 ◽  
Author(s):  
Seungchan Oh ◽  
Heewon Shin ◽  
Hwanhee Cho ◽  
Byongjun Lee
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Electric Power ◽  
Power Plants ◽  
Transient Stability ◽  
Impact Analysis ◽  
Renewable Energy Sources ◽  
Electric Power System ◽  
Energy Sources ◽  
The Impact

Efforts to reduce greenhouse gas emissions constitute a worldwide trend. According to this trend, there are many plans in place for the replacement of conventional electric power plants operating using fossil fuels with renewable energy sources (RESs). Owing to current needs to expand the RES penetration in accordance to a new National power system plan, the importance of RESs is increasing. The RES penetration imposes various impacts on the power system, including transient stability. Furthermore, the fact that they are distributed at multiple locations in the power system is also a factor which makes the transient impact analysis of RESs difficult. In this study, the transient impacts attributed to the penetration of RESs are analyzed and compared with the conventional Korean electric power system. To confirm the impact of the penetration of RESs on transient stability, the effect was analyzed based on a single machine equivalent (SIME) configuration. Simulations were conducted in accordance to the Korean power system by considering the anticipated RES penetration in 2030. The impact of RES on transient stability was provided by a change in CCT by increasing of the RES penetration.

scholarly journals Numerical solution of the age structure optimization problem for basic types of power plants

2019 ◽  
Vol 29 (1) ◽  
pp. 81-92 ◽  
Author(s):  
Evgeniia Markova ◽  
Inna Sidler
Keyword(s):  
Power System ◽  
Numerical Solution ◽  
Electric Power ◽  
Age Structure ◽  
Power Plants ◽  
Real Life ◽  
Electric Power System ◽  
Integral Model ◽  
Variable Integration ◽  
The Cost

Our paper addresses an integral model of the large electric power system optimal development. The model takes into account the age structure of the main equipment, which is divided into several types regarding its technical characteristics. This mathematical model is a system of Volterra type integral equations with variable integration limits. The system describes the balance between the given demand for electricity, the commissioning of new equipment and the dismantling of obsolete equipment, as well as the shares of different types of power plants in the total composition of the electric power system equipment. Based on the developed model, we got numerical solution to the problem of finding the optimal strategy for replacing equipment with a minimum of the cost functional. The case study is the Unified Electric Power System of Russia. Calculations of the forecast for development of the electric power system of Russia until 2050 were made using real-life data.

scholarly journals Problems of using pumped storage power plants to improve the reliability and controllability of electric power system of the republic of Uzbekistan

2019 ◽  
Vol 139 ◽  
pp. 01009
Author(s):  
Murodilla Mukhammadiev ◽  
Boborakhim Urishev ◽  
Shirin Esemuratova ◽  
Nigina Djumaniyozova
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Power Plants ◽  
Electric Power Systems ◽  
Electric Power System ◽  
The Republic ◽  
Pumped Storage

This article deals with the analysis and development perspectives of the use pumped storage power plants use to increase the reliability and regime controllability of electric power systems of the Republic of Uzbekistan.

scholarly journals Use of maneuverable properties of hydroelectric power plants and hydro-accumulating power plants for improving reliability and operating efficiency of electric power systems of commonwealth countries (using example of power plants of Russia and the Republic of Uzbekistan)

2020 ◽  
Vol 216 ◽  
pp. 01139
Author(s):  
Yu.S. Vasilyev ◽  
V.V. Elistratov ◽  
I.G. Kudryasheva ◽  
M.M. Mukhammadiyev ◽  
B.U. Urishev
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Electric Power System ◽  
Operating Efficiency ◽  
Hydroelectric Power ◽  
Current Increase ◽  
Pump Station

The possibilities of using shunting properties of HPP units, HAPS (Hydro-accumulating power system) for energy storage and redistribution, as well as Pump Station as a consumer of the regulator in night load dips to increase the reliability of the electric power system (EPS) in the conditions of the current increase in the share of non-nondestructive capacities in Russia and Uzbekistan and the implementation of programs for the development of renewable energy sources, primarily the construction of wind and solar power plants, were considered.

Supporting Windpower Within a Separate Electric Power Grid

2011 ◽  
Author(s):  
Zygfryd Domachowski ◽  
Marek Dzida ◽  
M. Hossein Ghaemi
Keyword(s):  
Control System ◽  
Power System ◽  
Electric Power ◽  
Gas Turbine ◽  
Electric Power System ◽  
Combined Cycle ◽  
Turbine Plant ◽  
Wind Turbulence ◽  
Gas Turbine Plant ◽  
Plant Control

Utilization of windpower is considerably increasing in many countries around of the world. However, it produces an unreliable output due to the vagaries of the wind profile. To solve the problem, wind energy should be supported by local conventional sources. The requirements concerning the reliability and quality of electric energy supply can be most satisfactorily fulfilled when a windfarm is connected to a large electric power system. Then any electric power fluctuations, resulting either from wind turbulence or power demand variation, provoke system frequency variations. They should be damped by applying an appropriate control system of such a large power system. In this paper, the problem of control of a separate electric power system composed of windpower farm and supported by a gas turbine plant or a combined cycle has been investigated. First, the impact of wind turbulence on gas turbine plant control system has been modeled and simulated. This is carried out for different amplitudes and frequencies of wind speed. Next, the structure of gas turbine plant control system and its parameters have been adapted to limit the power and frequency fluctuations resulting from wind turbulence. Then the design is further developed by considering a combined cycle instead of a single gas turbine.

scholarly journals Separation of Transformers for Class 1E Systems in Nuclear Power Plants

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Sang-Hyun Lee ◽  
Choong-Koo Chang
Keyword(s):  
Power System ◽  
Electric Power ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Voltage Drop ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Electric Power System ◽  
Improved Model

In order to supply electric power to the safety related loads, safety and reliability of onsite power have to be ensured for the safety function performance in nuclear power plants. Even though the existing electric power system of APR1400 meets the requirements of codes regarding Class 1E system, there is a room for improvement in the design margin against the voltage drop and short circuit current. This paper discusses the amount that the voltage drop and short circuit current occur in the existing electric power system of APR1400. Additionally, this paper studies with regard to the improved model that has the extra margin against the high voltage drop and short circuit current by separation of unit auxiliary transformer (UAT) and standby auxiliary transformer (SAT) for the Class 1E loads. The improved model of the electric power system by separation of UAT and SAT has been suggested through this paper. Additionally, effects of reliability and cost caused by the electric power system modification are considered.

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