In this work an algorithm to control the power flow of an electric power system with two integrated energy storage systems is investigated. The power system under consideration consists of a conventional distribution ...
详细信息
ISBN:
(纸本)9781509041695
In this work an algorithm to control the power flow of an electric power system with two integrated energy storage systems is investigated. The power system under consideration consists of a conventional distribution feeder that supplies the power to satisfy the customers' demand, a set of photovoltaic (PV) panels that also contribute to the power generation, one unit of Lithium-Ion battery storage for the intra-day use and a combined power-to-gas (PtG) and gas-to-power installation that converts the power excess in the summertime into hydrogen and injects power back to the system in the wintertime. The proposed control algorithm is based on model predictive control tailored for the energy system under investigation. To demonstrate the performance of the proposed control, a set of synthetic PV and demand profiles representing future conditions in Switzerland were created and used as input data to the system model. The synthesized generation and consumption data span a whole year of operation. A number of detailed simulations performed in the framework of the study reported in this paper demonstrate the effectiveness of the proposed control algorithm and provided invaluable insights into the optimum operation of the complex integrated power system.
The accuracy of weather-dependent power flow analysis for large interconnected systems can be significantly improved by including more electrical devices exposed to weather variables such as ambient temperature, wind ...
详细信息
ISBN:
(纸本)9781665434287
The accuracy of weather-dependent power flow analysis for large interconnected systems can be significantly improved by including more electrical devices exposed to weather variables such as ambient temperature, wind speed and solar irradiance. The innovative part of the proposed approach is the combination of factors such as a voltage regulating transformer model, freely available weather data to feed the weather-dependent power flow algorithm, and a geographic visualization tool to display the results. To demonstrate the effectiveness of the proposed approach, the IEEE 118-bus system is used to analyze and compare the results of the weather-dependent power flow model versus a conventional power flow. In this case, it is used in the stationary analysis, the power flow temperature algorithms are performed in spatial visualization schemes. The results show that weather conditions directly affect the power system performance
Contingency Screening and Coherent Identification are two fundamental parts of power system planning and operation. A common characteristic among these two methods is the need to analyze multiples contingencies. Howev...
详细信息
Contingency Screening and Coherent Identification are two fundamental parts of power system planning and operation. A common characteristic among these two methods is the need to analyze multiples contingencies. However, most of the current work existing in the literature is based on the paradigm of analyzing one contingency at a time, using 2D arrays (matrices) for the event representation. The drawback with this type of representations is the impossibility to consider multiple contingencies simultaneously. In this paper a reformulation of the problem using 3D arrays (tensors) is presented. Then, the extraction of the information is carried out using PARAFAC2. With this information, a severity index for contingency screening is proposed and identification of the coherent areas is accomplished. The approach is validated in the IEEE NETS-NYPS test system. The results confirm that the proposed approach allows to extract more information than in the traditional form.
In modern powersystems, information from different sources is metered using various monitoring technologies. These data are known as internal variables since they are measured directly from the power system. Addition...
详细信息
暂无评论