The dynamic compensation of the reactive power for the integration of wind power in a weak distribution network

2016 ◽  
pp. 95-99
Author(s):  
Ritam Misra
Keyword(s):  
Wind Power ◽  
Reactive Power ◽  
Distribution Network ◽  
Dynamic Compensation

scholarly journals Two-Stage Stochastic Programming Scheduling Model for Hybrid AC/DC Distribution Network Considering Converters and Energy Storage System

2019 ◽  
Vol 10 (1) ◽  
pp. 181
Author(s):  
Peng Kang ◽  
Wei Guo ◽  
Weigang Huang ◽  
Zejing Qiu ◽  
Meng Yu ◽  
...  
Keyword(s):  
Wind Power ◽  
Reactive Power ◽  
Distribution Network ◽  
Stochastic Scheduling ◽  
Second Order ◽  
Mixed Integer ◽  
Two Stage ◽  
Dc Distribution ◽  
Scheduling Model ◽  
Second Order Cone

The development of DC distribution network technology has provided a more efficient way for renewable energy accommodation and flexible power supply. A two-stage stochastic scheduling model for the hybrid AC/DC distribution network is proposed to study the active-reactive power coordinated optimal dispatch. In this framework, the wind power scenario set is utilized to deal with its uncertainty in real time, which is integrated into the decision-making process at the first stage. The charging/discharging power of ESSs and the transferred active/reactive power by VSCs can be adjusted when wind power uncertainty is observed at the second stage. Moreover, the proposed model is transformed into a mixed integer second-order cone programming optimization problem by linearization and second-order cone relaxation techniques to solve. Finally, case studies are implemented on the modified IEEE 33-node AC/DC distribution system and the simulation results demonstrate the effectiveness of the proposed stochastic scheduling model and solving method.

An Intelligent Approach for Reactive Power Planning in Distribution Network with Wind Power

2013 ◽  
Vol 344 ◽  
pp. 279-284
Author(s):  
Ling Yun Wang ◽  
Jie Pan ◽  
Ling Lu
Keyword(s):  
Wind Power ◽  
Wind Farm ◽  
Reactive Power ◽  
Distribution Network ◽  
Power Losses ◽  
Power Requirement ◽  
Real Power ◽  
Control Objective ◽  
Reactive Power Planning ◽  
Intelligent Approach

An intelligent approach for reactive power planning in distribution network with wind power is presented. A genetic optimization algorithm is applied in order to optimize the reactive power dispatch. The reactive power requirement for wind farm is considered as a restriction so that the active power control objective can be achieved while the real power losses are minimized. Finally, the proposed method is tested in the standard IEEE 30 node system with five wind turbines as a simulated wind farm, while considering the capability limits of wind turbine. The numerical results show that the proposed intelligent genetic algorithm can reduce real power losses effectively and improve the node voltage stability.

scholarly journals Loss Minimization in Distribution Network using Wind Power Plant Reactive Power Support

2021 ◽  
Author(s):  
Aeishwarya Baviskar ◽  
Kaushik Das ◽  
Anca Daniela Hansen ◽  
Panos Menegatos
Keyword(s):  
Wind Power ◽  
Distribution System ◽  
Power Flow ◽  
Power Plants ◽  
Reactive Power ◽  
Distribution Network ◽  
Distribution Networks ◽  
Voltage Profile ◽  
Network Losses ◽  
Optimization Methodology

<div>The increased penetration of wind power plants (WPPs) in distribution networks challenges the distribution system operators (DSOs) to improve and optimize networks’ operation. A higher amount of local power production translates to more losses in the network. This paper proposes a deterministic optimization methodology to minimize the losses in distribution networks with WPPs, by exploiting WPPs’ capability to control reactive power in coordination with the on-load tap changers from the MV/HV transformer, avoiding the need for network reinforcements. The principal objective is to optimize the reactive power flow in the network. Measurements from a real distribution network with a large share of controllable WPPs under varying wind and load conditions are used for the study. The benefits and the challenges of the optimization methodology are assessed and discussed with respect to active power losses, voltage profile and reactive power. The results show that with reactive power support from WPPs, network losses are reduced by 4.2 %. Higher loss reductions (up to 19 %) can be achieved through a coordinated action between the WPPs and TSO. Furthermore, it is shown that the distribution network can act as an asset to the transmission network for reactive power support, via actively controlling WPP’s reactive power.</div>

scholarly journals Loss Minimization in Distribution Network using Wind Power Plant Reactive Power Support

2021 ◽  
Author(s):  
Aeishwarya Baviskar ◽  
Kaushik Das ◽  
Anca Daniela Hansen ◽  
Panos Menegatos
Keyword(s):  
Wind Power ◽  
Distribution System ◽  
Power Flow ◽  
Power Plants ◽  
Reactive Power ◽  
Distribution Network ◽  
Distribution Networks ◽  
Voltage Profile ◽  
Network Losses ◽  
Optimization Methodology

<div>The increased penetration of wind power plants (WPPs) in distribution networks challenges the distribution system operators (DSOs) to improve and optimize networks’ operation. A higher amount of local power production translates to more losses in the network. This paper proposes a deterministic optimization methodology to minimize the losses in distribution networks with WPPs, by exploiting WPPs’ capability to control reactive power in coordination with the on-load tap changers from the MV/HV transformer, avoiding the need for network reinforcements. The principal objective is to optimize the reactive power flow in the network. Measurements from a real distribution network with a large share of controllable WPPs under varying wind and load conditions are used for the study. The benefits and the challenges of the optimization methodology are assessed and discussed with respect to active power losses, voltage profile and reactive power. The results show that with reactive power support from WPPs, network losses are reduced by 4.2 %. Higher loss reductions (up to 19 %) can be achieved through a coordinated action between the WPPs and TSO. Furthermore, it is shown that the distribution network can act as an asset to the transmission network for reactive power support, via actively controlling WPP’s reactive power.</div>

scholarly journals REACTIVE POWER COMPENSATION AND VOLTAGESTABILIZATION FOR WIND POWER IN A WEAK DISTRIBUTION NETWORK

2014 ◽  
pp. 169-171
Author(s):  
HARSHA ANANTWAR ◽  
SUDARSHAN B.S ◽  
SRINIVAS T. R. ◽  
VISHAL SINGH GURUNG ◽  
ASHISH LAL CHAKRAVARTHY
Keyword(s):  
Electricity Generation ◽  
Reactive Power ◽  
Distribution Network ◽  
Wind Farms ◽  
Electrical Energy ◽  
Reactive Power Compensation ◽  
Dynamic Compensation ◽  
Local Loads ◽  
Induction Generators ◽  
Static Var Compensators

One of the most promising alternate sources of energy is wind energy. Energy of the wind is converted to electrical energy in wind farms and is then connected to a weak distribution network to supply local loads. Most wind farms use induction generators for electricity generation. These induction generators draw excessive reactive power for their operation and this causes shortage of reactive power in the system and leads to voltage collapse. This problem is simulated on PSCAD/EMTDC platform. For static compensation, capacitor banks are used and for dynamic compensation, Static Var Compensators (SVCs) are used.

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.

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