scholarly journals Study of a low voltage reactive power dynamic compensation device with continuously adjustable capacity

2020 ◽  
Vol 514 ◽  
pp. 042064
Author(s):  
Zifu Zhou ◽  
Jun Long
Keyword(s):  
Reactive Power ◽  
Low Voltage ◽  
Dynamic Compensation ◽  
Power Dynamic ◽  
Compensation Device

The Application of Low Voltage Dynamic Reactive Compensation Technology of Submerged Arc Furnace in Intelligent Industrial Park

2014 ◽  
Vol 953-954 ◽  
pp. 1471-1477
Author(s):  
Qiang Li ◽  
Ning Xi Song ◽  
Qian Sun ◽  
Hao Liu ◽  
Da Peng Wang
Keyword(s):  
Reactive Power ◽  
Low Voltage ◽  
Reactive Power Compensation ◽  
Industrial Park ◽  
Dynamic Compensation ◽  
Power Dynamic ◽  
Reactive Compensation ◽  
Working Principle ◽  
Compensation Device ◽  
Submerged Arc Furnace

This paper introduces a kind of low-voltage dynamic reactive power compensation technology which is applied in intelligent industrial park. The system scheme, working principle, technical feature of the DCS-KB-2100 type low voltage power dynamic compensation device is recommended. According to the application result, the low voltage reactive power compensation technology has been greatly improved power quality, improve the power factor of the power grid. The advancement and stability of the low voltage reactive power dynamic compensation technology is verified. In the process of enterprise production, it gives full play to the role of energy saving and consumption reducing, points out the direction on the technological innovation of the industrial park electricity intellectualization, and provides a reliable technical support.

Current Detection Simulate for STATCOM Dynamic Compensation System

2010 ◽  
Vol 439-440 ◽  
pp. 378-383
Author(s):  
Ying Chen ◽  
Xiang Jie Chen
Keyword(s):  
Reactive Power ◽  
Power Transmission ◽  
Low Voltage ◽  
Reactive Power Compensation ◽  
Compensation System ◽  
Static Synchronous Compensator ◽  
Dynamic Compensation ◽  
Pressure Area ◽  
Source Current ◽  
Compensation Device

In view of low-pressure area for dynamic reactive power compensation device application present situation, a more advanced static reactive power compensation techniques was proposed that is STATCOM (Static Synchronous Compensator-STATCOM) which based on the modern power electronic technology, and it applied to the low-voltage dynamic reactive power compensation area, developed a new and more advanced low-voltage dynamic reactive power compensation device. In this paper, STATCOM compensation system simulation model was established in MATLAB6.5, futher to study its real-time compensation. Theory analyze and simulation results indicate that compare with static capacitor compensation，dynamic compensation achieved zero phase angle between power source current and voltage on rating frequency，demand for power supply rating power is reduced and power transmission performance is ensured.

Analysis of LVRT Influence on the Neighboring Wind Farm and a New Protection Scheme for DFIG

2013 ◽  
Vol 291-294 ◽  
pp. 2250-2253
Author(s):  
Hui Lan Jiang ◽  
Man Zhang
Keyword(s):  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Negative Influence ◽  
Protection Scheme ◽  
Low Voltage Ride Through ◽  
Compensation Device ◽  
Adaptive Control Strategy ◽  
Doubly Fed ◽  
Series Resistor

Low voltage ride-through (LVRT) capability has become more important to the doubly-fed induction generator (DFIG) as the penetration of wind power increases. This paper analyses the LVRT influence on the neighboring wind farm, mainly considering the crowbar action during a fault. On the basis, a new protection scheme for the DFIG is proposed to prevent the negative influence, primarily based on a rotor series resistor and a reactive power compensation device. And the adaptive control strategy is presented. Through the simulation, characteristics of DFIG in the neighboring wind farm with and without the protection scheme are compared. The results show that the cascading crowbar action can be avoided by the protection scheme and it is advantageous for grid voltage restoration.

The Research for Control Strategy of Low Voltage Ride-through Based on DFIG

2013 ◽  
Vol 373-375 ◽  
pp. 1299-1303
Author(s):  
Si Qing Sheng ◽  
Huan Li ◽  
Lin Tao Fan
Keyword(s):  
Control Strategy ◽  
Reactive Power ◽  
Low Voltage ◽  
Fault System ◽  
Low Voltage Ride Through ◽  
Power Load ◽  
Point Of Common Coupling ◽  
Compensation Device ◽  
Doubly Fed ◽  
Doubly Fed Generator

The doubly-fed wind power generation system containing crowbar protection circuit will change from reactive power source to reactive power load during the low voltage ride-through, which is likely to aggravate burdens to the fault system. Aiming at solving this problem, the paper will introduce the STATCOM compensation device, and put forward a comprehensive control strategy. Under the coordinated control strategy, the STATCOM will cooperate with the compensation capacity of the doubly-fed generator to support the reactive power. The voltage at point of common coupling will be raised and the ability of low voltage ride-through of the wind turbines will be improved. A simulative model of doubly-fed induction generator is established in MATLAB and the strategys rationality and effectiveness will be verified by the simulative results.

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