Reliability based modeling and analysis for a wind power system integrated by two wind farms considering wind speed dependence

2020 ◽  
Vol 203 ◽  
pp. 107077 ◽  
Author(s):  
Serkan Eryilmaz ◽  
Cihangir Kan
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Wind Power ◽  
Wind Farms ◽  
Modeling And Analysis ◽  
Speed Dependence ◽  
Wind Power System

Reliability Assessment of Wind Power System Considering Multi-Objective Models

2012 ◽  
Vol 608-609 ◽  
pp. 742-747
Author(s):  
Chun Hong Zhao ◽  
Lian Guang Liu ◽  
Zi Fa Liu ◽  
Ying Chen
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Wind Power ◽  
System Reliability ◽  
Wind Farm ◽  
Wind Farms ◽  
Test System ◽  
Power System Reliability ◽  
Multi Objective ◽  
Wind Power System

The integration of wind farms has a significant impact on the power system reliability. An appropriate model used to assess wind power system reliability is needed. Establishing multi-objective models (wind speed model, wind turbine generator output model and wind farm equivalent model) and based on the non-sequential Monte Carlo simulation method to calculate risk indicators is a viable method for quantitatively assessing the reliability of power system including wind farms. The IEEE-RTS 79 test system and a 300MW wind farm are taken as example.The calculation resluts show that using the multi-objective models can improve accuracy and reduce error; the higher average wind speed obtains the better system reliabitity accordingly.

scholarly journals Evaluation Method of Wind Speed Time-Shifting Characteristics at Multiple Scales and Its Application in Wind Power System

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Han Wang ◽  
Shuang Han ◽  
Yongqian Liu ◽  
Aimei Lin
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Wind Power ◽  
Large Scale ◽  
Wind Farm ◽  
Evaluation Method ◽  
Multiple Scales ◽  
Wind Farms ◽  
Physical Method ◽  
Wind Power System

The wind speed sequences at different spatial positions have a certain spatiotemporal coupling relationship. It is of great significance to analyze the clustering effect of the wind farm(s) and reduce the adverse impact of large-scale wind power integration if we can grasp this relationship at multiple scales. At present, the physical method cannot optimize the time-shifting characteristics in real time, and the research scope is concentrated on the wind farm. The statistical method cannot quantitatively describe the temporal relationship and the speed variation among wind speed sequences at different spatial positions. To solve the above problems, a quantification method of wind speed time-shifting characteristics based on wind process is proposed in this paper. Two evaluation indexes, the delay time and the decay speed, are presented to quantify the time-shifting characteristics. The effectiveness of the proposed method is verified from the perspective of the correlation between wind speed sequences. The time-shifting characteristics of wind speed sequences under the wind farms scale and the wind turbines scale are studied, respectively. The results show that the proposed evaluation method can effectively achieve the quantitative analysis of time-shifting and could improve the results continuously according to the actual wind conditions. Besides, it is suitable for any spatial scale. The calculation results can be directly applied to the wind power system to help obtain the more accurate output of the wind farm.

scholarly journals Impacts of Integration of Wind Farms on Power System Transient Stability

2018 ◽  
Vol 8 (8) ◽  
pp. 1289 ◽  
Author(s):  
Shiwei Xia ◽  
Qian Zhang ◽  
S.T. Hussain ◽  
Baodi Hong ◽  
Weiwei Zou
Keyword(s):  
Power Generation ◽  
Wind Speed ◽  
Power System ◽  
Wind Power ◽  
Transient Stability ◽  
Wind Farms ◽  
Wind Power Generation ◽  
Wind Generation ◽  
System Operation ◽  
Power System Operation

To compensate for the ever-growing energy gap, renewable resources have undergone fast expansions worldwide in recent years, but they also result in some challenges for power system operation such as the static security and transient stability issues. In particular, as wind power generation accounts for a large share of these renewable energy and reduces the inertia of a power network, the transient stability of power systems with high-level wind generation is decreased and has attracted wide attention recently. Effectively analyzing and evaluating the impact of wind generation on power transient stability is indispensable to improve power system operation security level. In this paper, a Doubly Fed Induction Generator with a two-lumped mass wind turbine model is presented firstly to analyze impacts of wind power generation on power system transient stability. Although the influence of wind power generation on transient stability has been comprehensively studied, many other key factors such as the locations of wind farms and the wind speed driving the wind turbine are also investigated in detail. Furthermore, how to improve the transient stability by installing capacitors is also demonstrated in the paper. The IEEE 14-bus system is used to conduct these investigations by using the Power System Analysis Tool, and the time domain simulation results show that: (1) By increasing the capacity of wind farms, the system instability increases; (2) The wind farm location and wind speed can affect power system transient stability; (3) Installing capacitors will effectively improve system transient stability.

scholarly journals An Experimental Investigation of FNN Model for Wind Speed Forecasting Using EEMD and CS

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Jianzhou Wang ◽  
Haiyan Jiang ◽  
Bohui Han ◽  
Qingping Zhou
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Wind Power ◽  
Wind Farm ◽  
Frequency Noise ◽  
Wind Speed Forecasting ◽  
System A ◽  
Wind Power System ◽  
And Performance ◽  
Using Data

With depletion of traditional energy and increasing environmental problems, wind energy, as an alternative renewable energy, has drawn more and more attention internationally. Meanwhile, wind is plentiful, clean, and environmentally friendly; moreover, its speed is a very important piece of information needed in the operations and planning of the wind power system. Therefore, choosing an effective forecasting model with good performance plays a quite significant role in wind power system. A hybrid CS-EEMD-FNN model is firstly proposed in this paper for multistep ahead prediction of wind speed, in which EEMD is employed as a data-cleaning method that aims to remove the high frequency noise embedded in the wind speed series. CS optimization algorithm is used to select the best parameters in the FNN model. In order to evaluate the effectiveness and performance of the proposed hybrid model, three other short-term wind speed forecasting models, namely, FNN model, EEMD-FNN model, and CS-FNN model, are carried out to forecast wind speed using data measured at a typical site in Shandong wind farm, China, over three seasons in 2011. Experimental results demonstrate that the developed hybrid CS-EEMD-FNN model outperforms other models with more accuracy, which is suitable to wind speed forecasting in this area.

Rotational Speed Control of Wind Power Generation Systems with Variable-Speed and Variable-Pitch

2011 ◽  
Vol 130-134 ◽  
pp. 3190-3194
Author(s):  
Ja Kuan Xia ◽  
Shi Xuan Lu ◽  
Shuang Mao ◽  
Wei Huang
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Wind Power ◽  
Controller Design ◽  
System Parameters ◽  
Output Stability ◽  
Uncertain Disturbances ◽  
Wind Power System ◽  
Rotational Speed Control ◽  
Power Generation Systems

A robust controller of wind turbine pitch angle is designed by using the quantitative feedback theory based on the analysis of wind power system model in this paper. The controller design methodology is to select the system parameters quantitatively at different wind speed disturbances in order to optimize the response time and the output stability. Theoretical analysis and simulation results demonstrate that the controller can control the speed stability of wind power system with strong robustness to uncertain disturbances of the system parameters when the wind speed fluctuates randomly.

scholarly journals Grid-Connected Dual Stator-Winding Induction Generator Wind Power System for Wide Wind Speed Ranges

2016 ◽  
Vol 16 (4) ◽  
pp. 1455-1468 ◽  
Author(s):  
Kai Shi ◽  
Peifeng Xu ◽  
Zengqiang Wan ◽  
Feifei Bu ◽  
Zhiming Fang ◽  
...  
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Wind Power ◽  
Induction Generator ◽  
Stator Winding ◽  
Wind Power System

The Application of Capacitive Output Impedance of Inverter in Wind Farms

2013 ◽  
Vol 846-847 ◽  
pp. 745-749
Author(s):  
Wei Guo ◽  
Dong Mei Zhao
Keyword(s):  
Power System ◽  
Wind Power ◽  
Simulation Experiment ◽  
Wind Farms ◽  
The Other ◽  
Droop Control ◽  
Output Impedance ◽  
Compensation Strategy ◽  
Wind Power System ◽  
Virtual Impedance

This paper studies about two parts :one is about principle and construction of the equivalent capacitive output impedance of inverter, the other is that through comparing different compensation strategy of the application of simulation experiment, and verify the effect of C-Inverter.1) In this paper we study the droop control characteristics of three types of inverters with inductive, resistive and capacitive equivalent output impedance respectively, and use the virtual impedance to get C-Inverter in wind power.2) This paper sets up SVC and STATCOM models and improved the converter which changes to capacitive inverter in DIgSLIENT, which are connected to wind power system, verifying the validity of SVC and STATCOM models and the effect of C-Inverter.

The Variable Speed Direct Drive Permanent Magnet Synchronous Wind Power System Used on Matrix Converter

2011 ◽  
Vol 383-390 ◽  
pp. 7569-7575
Author(s):  
Bo Yang ◽  
Guang Zeng ◽  
Yan Ru Zhong
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Permanent Magnet ◽  
Wind Power ◽  
Control Strategy ◽  
Matrix Converter ◽  
Variable Speed ◽  
Direct Drive ◽  
Capture Range ◽  
Wind Power System

A voltage control strategy of the converter inverter-stage is proposed for the variable speed direct drive wind power system which consists with the two stage matrix converter (TSMC) and the permanent magnet synchronous generator (PMSG). In this control strategy, the inverter-stage voltage is controlled by the adjusted of inverter-stage modulation ratio M. For two cases, which is strong wind speed and weak wind speed, the ways that is decrease M and increase M are used and obtain the wide wind speed capture range. The resulted of simulation and experiment show that this way can make the voltage stabled. The performance of the converter implement this control strategy is still as same as the dual PWM converter and the wind power system preserve the feature of the wide wind speed capture range. So this way is effective and feasible to some extent.

Sign in / Sign up

Export Citation Format

Share Document