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This paper presents a method to assess the impact on system reliability of wind integration, considering coordinated operation with cascade hydropower. The seasonal characteristics of river flows and correlation amongst different wind farms are considered. Time sequential Monte Carlo simulation and Latin Hypercube Sampling techniques are used to preserve the characteristics of the time series of the...
The use of wind energy sources for supplying electric vehicle (EV) loads is a challenge for electricity market operators due to their inherent uncertainty in the current market architecture. Coordinated energy exchange between EV load aggregators and wind generating companies (WGenCOs) can potentially increase the competitiveness of WGenCOs and EV-load customers in the energy market. This paper proposes...
This paper introduces an exact and efficient method for computing and visualizing the power flow feasibility boundary of large networks composed of (1) saddle-node bifurcation manifolds where the Jacobian is singular and (2) limit-induced bifurcation manifolds where the network loses structural stability as the limit is encountered. This method is applied to the DTE/ITC system in Eastern Michigan...
Ever increasing penetration of wind power generation along with the integration of energy storage systems (ESSs) makes the successive states of the power system interdependent and more stochastic. Appropriate stochastic modeling of wind power is required to deal with the existence of uncertainty either in observations of the data (spatial) or in the characteristics that drive the evolution of the...
The major obstacle toward wind farm integration is power mismatch between wind output and grid desirable generation due to wind uncertainty and negative effect on peak load regulation. Storage can be used as assistance to reduce this mismatch. Needed storage capacity for full level of assistance is acceptable only for small-scale wind farm with qualified matching requirement. But when it comes to...
Integrating additional wind energy into the existing power system may cause wind curtailment due to the system operational constraints and reliability requirements. Effective ways to mitigate this problem are to use energy storage or increase transmission capacity. In this paper, the impacts of coordinating with pumped storage and increasing transmission capacity on wind output curtailment mitigation...
Although the installed wind generation capacity has grown remarkably over the past decades, percentage of wind energy in electricity supply portfolio is still relatively low. Due to the technical limitations of power system operations, considerable wind generation cannot integrate into the grid but gets curtailed. Among various factors, transmission congestion accounts for a significant portion of...
This paper presents the analysis of a distribution system subject to reconfiguration with high wind penetration over a period of 24 hours. In order to meet this objective, the reconfiguration problem is solved through mixed integer linear programming considering the stochasticity of the variables, where the balance between load and generation has to be satisfied at the lowest cost in each period....
Wind power penetration in power systems is significantly increasing over the years. Wind generation is highly random and a significant change in wind power within a short timeframe forms a wind ramp event. These events can create severe generation-demand imbalance and cause damage to the wind turbines due to extreme stresses. Therefore, prediction of wind ramp events is essential for system operators...
One of the factors hindering the large scale integration of wind power is the post contingency congestion of a network due to limited availability of network capacity and auxiliary constraints. Under such conditions, the network operators can potentially request a curtailment of wind farm output if the remedial strategies fail. The paper investigates this problem in detail and proposes a mathematical...
Wind energy has been playing a critical role in modern electric power system due to the fact that wind is free of cost and environment-friendly. However the inherent intermittency of wind has complicated system operation such as optimal power flow (OPF). In this paper, the authors present a stochastic OPF model integrated with wind power (WOPF). Since WOPF is a highly non-linear and non-convex problem,...
Nowadays, the promotion of flexibility in power systems is crucial to integrate non-manageable Renewable Energy Sources into the grid, mainly due to both variability and uncertainty issues. A wide range of strategies are currently available to provide suitable alternatives depending on the characteristics of each solution. According to previous contributions, these solutions can be classified into:...
The variability of large scale wind power generation at high penetration levels has a significant impact on the secure and economic operation of onshore power systems. Grid bottlenecks, high gradients and wasting of wind energy can be avoided using local Energy Storage Systems (ESS) with dedicated power and capacity. The storage type considered in this study is an adiabatic compressed air energy storage...
As the penetration of wind generation increases, the effects of ramping events on power system security become serious. In order to improve the output characteristics of wind generation, wind farms coordination control based on contribution index is proposed to ensure wind farms to respond to scheduling plan of virtual power plant (VPP). Based on the power regulation amount of wind farms, regulation...
The planning of distribution network is faced with a great challenge when large-scale renewable energy mostly wind power entering into power system. This paper proposes a bi-level programming model considering distributed wind generation (DWG) allocation in the active distribution network environment which introduces active management fee (AMF) concept firstly. The bi-level programming is a complex...
Traditional methods of planning investment in Wind Energy Conversion Systems (WECS) focus on selecting sites that individually display the maximum total extractable wind energy. However, cost penalties associated with the uncertainty in Wind Power Production (WPP) may be non-negligible. This paper proposes a more holistic methodology to find the near optimal investment in WECS considering capital...
The prospects of Electric Vehicles (EVs) in providing clean transportation and supporting renewable electricity is widely discussed in sustainable energy forums worldwide. The battery storage of EVs could be used to address the variability and unpredictability of electricity produced from renewable energy sources like wind in power systems. The EV batteries could be used to charge during periods of...
A major challenge in power system operation is the integration of renewable energy in-feed in large scale. Currently, the responsibility to cope with uncertainty in power injection is transferred to a central authority, i.e. the system operator, while renewable energy in-feed is supported via a tariff system. In this paper we propose market participation of wind farms in combination with a third-party...
The addition of renewable energy to the existing power system introduces several complexities. With increased penetration of wind energy there are power balancing and frequency issues that come into existence. A hybrid energy storage application towards smoothing the power output from a wind generator and a frequency domain based sizing of the same is done in this paper. The sizing also considers...
Due to the variability of wind power, it is imperative to accurately and timely forecast wind generation to enhance the flexibility and reliability of the operation and control of real-time power systems. Special events such as ramps and spikes are hard to predict with traditional methods using solely recently measured data. In this paper, a new Gaussian Process model with hybrid training data taken...
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