Yi Song

Medium and long term load forecasting considering the uncertainty of distributed installed capacity of photovoltaic generation

Nowadays, the scale of distributed photovoltaic generation integrated into the distributed network and its penetration rate are growing continuously. The increase of installed capacity of distributed PV generation, sensitive to the market and national policies, is highly uncertain. Besides, the output of PV generation is highly random and clustered. This has posed great challenges to the medium and long term load forecasting of power system. In this paper, a neural network expert system model is proposed to predict the installed capacity of distributed PV on the target year. A method is put forward to predict the effective clipping capacity of the distributed PV generation during peak hours, providing new ideas for long term load forecasting with the distributed PV power integrated into the grid.

Research on Investment Strategy of Power Grid Company's Distribution Network under the Background of Power System Reform

The distribution network investment is an important business area of power Grid Company. Under the background of power system reform, more participants will participate in the investment business of distribution network. And the power grid will be in face to fierce market competition. This paper introduce an investment strategy of power Grid Company’s distribution network, so as to help the power grid companies to solve the problem.

Smart building energy management based on network occupancy sensing

To meet environmental-friendly requirements, Building Energy Management Systems (BEMS) is required for energy consumption monitoring and management. A new energy reducing strategy based on BEMS is ...

Electric vehicle smart charging network under the energy internet framework

The development of energy internet facilitates the precious intelligent control of EV smart charging network, and therefore bringing economic benefits to the power grid and the customers. The strategies for integrating network of charging service into the energy internet and the construction strategy of EV smart charging network are proposed. The technologies and hardware is presented to form the construction principles in typical charging scenarios. And then the business model is established on the condition of technology development and existing hardware platform, aiming to improve promote the smart energy utilization and the application of energy internet.

Harmonic characteristics of distributed generation and electric vehicle integrating to the grid

High penetration of distributed generation and electric vehicles has become an important feature of Chinas future power grid. However, it also causes serious harmonic pollution to the grid. In this article, we set up harmonic analysis model of distributed generation and electric cars, and then, using the Fourier transform method, measure the harmonic in grid including distributed generation and electric vehicle. This paper focuses on the research and analysis of the harmonic characteristics in grid with distributed generation and electric vehicles considering different access locations, access capacities and access modes. Finally, some suggestions are provided for power grid supervisors.

Study on the typical mode of EV charging and battery swap infrastructure interconnecting to power grid

According to the development of electric vehicles (EV), this paper analyzes the influence of EV charging on Distribution network, and designs the typical mode of connection of EV charging and battery swap infrastructure. The typical mode considers several factors, such as the voltage level, the significant of user, point of common coupling, power supply, electrical equipment selection and the quality of electric energy and so on. The achievement could provide the guide to the planning of the EV charging and battery swap infrastructure interconnecting to the power grid.