Research on Voltage Coordinated Control of the Power Plants Connected

2013 ◽  
Vol 846-847 ◽  
pp. 297-300
Author(s):  
Min Xue ◽  
Hui Ping Zheng ◽  
Shu Yong Song ◽  
Chong Zhi Yin ◽  
Wei Wen Duan
Keyword(s):  
Power Plant ◽  
Power System ◽  
Power Plants ◽  
Reactive Power ◽  
Power Grid ◽  
Voltage Control ◽  
Coordinated Control ◽  
Grid Operation

According to coupling phenomenon of reactive power when a power plant is connected to another power plant, reactive power can not be to achieve a reasonable distribution of each power plant,which causes the problem of voltage control. This paper describes the methods of adjusting the parameters of automatic voltage control (AVC) to realize the coordinated control between power plants connected, which makes the voltage of power system to meet the demand of power grid operation.

Decision Tree Algorithm for Real-Time Identification of Critical Voltage Control Areas

2014 ◽  
Vol 666 ◽  
pp. 132-137
Author(s):  
Robert Andrzej Lis
Keyword(s):  
Power System ◽  
Decision Trees ◽  
Real Time ◽  
Reactive Power ◽  
Power Grid ◽  
Voltage Control ◽  
Test System ◽  
Critical Voltage ◽  
Transmission Power ◽  
On Line

Voltage stability, is driven by the balance of reactive power in a transmission power grid, and depends on the reactive power produced by the power stations and the value generated by the capacitive power lines and static compensators. Of particular interest is to identify those Critical Voltage Control Areas (CVCAs) in a transmission power grid, that may suffer reactive power deficiencies. Since speed of analysis is critical for on-line applications the approach will address the development of a scheme whereby CVCAs can be identified using data mining techniques from on-line power system snapshot (PMU). The database for storing/retrieving result of Modal Analysis can be used to construct decision trees (DTs) for each of the identified CVCAs using key power system attributes. The objective of this paper is to propose an new real-time methodology for identification of CVCAs, which is key function for preventive and remedial actions against instability of the Electrical Power System (EPS). This is carried out under various system operation and contingency conditions by using off-line trained decision trees generated and on-line PMU measurements. Numerical results on the 12-bus test system, shows the suitability and effectiveness of the proposed method.

scholarly journals Impact of the Wind Turbine on the Parameters of the Electricity Supply to an Agricultural Farm

2021 ◽  
Vol 13 (13) ◽  
pp. 7279
Author(s):  
Zbigniew Skibko ◽  
Magdalena Tymińska ◽  
Wacław Romaniuk ◽  
Andrzej Borusiewicz
Keyword(s):  
Power Plant ◽  
Wind Turbine ◽  
Wind Power ◽  
Rural Areas ◽  
Power Plants ◽  
Reactive Power ◽  
Supply Voltage ◽  
Common Source ◽  
Voltage Fluctuations ◽  
The Impact

Wind power plants are an increasingly common source of electricity located in rural areas. As a result of the high variability of wind power, and thus the generated power, these sources should be classified as unstable sources. In this paper, the authors attempted to determine the impact of wind turbine operation on the parameters of electricity supplied to farms located near the source. As a result of the conducted field tests, variability courses of the basic parameters describing the supply voltage were obtained. The influence of power plant variability on the values of voltage, frequency, and voltage distortion factor was determined. To estimate the capacity of the transmission lines, the reactive power produced in the power plant and its effect on the value of the power factor were determined. The conducted research and analysis showed that the wind power plant significantly influences voltage fluctuations in its immediate vicinity (the maximum value registered was close to 2%, while the value required by law was 2.5%). Although all the recorded values are within limits specified by the current regulations (e.g., the THD value is four times lower than the required value), wind turbines may cause incorrect operation of loads connected nearby. This applies mainly to cases where consumers sensitive to voltage fluctuations are installed in the direct vicinity of the power plant.

Research on Jing-Jin-Tang Power Grid Coordinated Control Strategy

2015 ◽  
Vol 799-800 ◽  
pp. 1306-1310
Author(s):  
Fang Ming Niu ◽  
Peng Wang ◽  
Yu Cheng ◽  
Xue Dong Ren
Keyword(s):  
Control Strategy ◽  
Power Grid ◽  
Coordinated Control ◽  
Automatic Generation ◽  
Control Mode ◽  
Practical Significance ◽  
Control Effect ◽  
Spare Capacity ◽  
New Strategy ◽  
Grid Operation

The disadvantage of Beijing-Tianjin-Tangshan power grid operation control mode is that the control effect is poorer and the spare capacity demand is big, this paper puts forward a new coordinated control strategy. First of all, this paper describes the relationship between the load, frequency, the output of generating unit, the tie line power and the area control error relationship of the whole power grid, according to the regional automatic generation control performance assessment criteria, concludes the characteristics of regional unit adjustment. This paper analyzes the contradiction between them, and then proposes a coordinated control strategy between the Beijing-Tangshan power grid and Tianjin power grid. The case simulation results prove the superiority and feasibility of the new coordinated control strategy. Compared with the original, the new strategy reduces the volatility of the unit, shortens the recovery time of frequency, and has a certain practical significance.

scholarly journals Approaches to establishing voltage control requirements for distributed generation units

2019 ◽  
Vol 139 ◽  
pp. 01006
Author(s):  
Pavel Ilyushin ◽  
Petr Berezovskiy ◽  
Sergey Filippov
Keyword(s):  
Power System ◽  
Power Control ◽  
Distributed Generation ◽  
Reactive Power ◽  
Voltage Control ◽  
Reactive Power Control ◽  
Technical Standards ◽  
National Regulation ◽  
Technical Requirements ◽  
Generating Equipment

Analysis of Russian national regulation and technical standards requirements for generating equipment participation in voltage and reactive power control in the power system carried out. Summary of some international experience in voltage control organization under conditions of distributed generation units’ deep integration in public grid is presented in article. Advantages of voltage and reactive power control automation over decentralized and poorly coordinated control are substantiated. Problematic aspects of distributed generation units (including RES) integration, as well as ENTSO-E approaches to voltage and reactive power control in the synchronous zone of continental Europe are considered. Technical requirements of Deutsch and Danish regulations, regarding participation of distributed generation facilities in voltage control are given. Approaches to establishing voltage control requirements for distributed generation units’ operation with national power system are presented.

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