The Experts below are selected from a list of 33 Experts worldwide ranked by ideXlab platform

Zhaoyang Wei - One of the best experts on this subject based on the ideXlab platform.

  • study on the Voltage Level sequence of future urban dc Distribution network in china a review
    International Journal of Electrical Power & Energy Systems, 2020
    Co-Authors: Jiandong Duan, Yi Zhou, Zhaoyang Wei
    Abstract:

    Abstract The future urban power system will come in the form of direct current (DC) Distribution network. Compared with alternating current (AC) Distribution network, DC Distribution network has many advantages, but it is an area where has not yet made any practically extensive appearance, this area is still in research phase. DC Distribution network plays a key role in the connection of power generation side and urban loads side, but unfortunately there is still no DC Distribution Voltage Level standard in the world. Aiming at DC Distribution network in China cities, this paper proposed a method to select reasonable DC Voltage Level sequence. To begin with, this method analyzes the factors Voltage Levels affecting and the extent of the impact and give the classification of internal and external factors. Furthermore, considering the constraint principle, impact of AC Distribution network, the factors Voltage Levels affecting, the influence of DC loads and DC projects, gives a set of scientific Voltage grade sequence value: 0.048/0.06/0.22/0.4/0.75/1.5/3/6/10/24/55/100 kV. Subsequently, the rationality of the recommended value is evaluated from five aspects of Voltage supply capacity, network loss, and AC Distribution network adaptability. Finally, from the aspect of load, this paper provide the outline of the future DC Distribution network of China cities. The research results of this paper can provide innovative ideas for future dc Distribution network.

Jiandong Duan - One of the best experts on this subject based on the ideXlab platform.

  • study on the Voltage Level sequence of future urban dc Distribution network in china a review
    International Journal of Electrical Power & Energy Systems, 2020
    Co-Authors: Jiandong Duan, Yi Zhou, Zhaoyang Wei
    Abstract:

    Abstract The future urban power system will come in the form of direct current (DC) Distribution network. Compared with alternating current (AC) Distribution network, DC Distribution network has many advantages, but it is an area where has not yet made any practically extensive appearance, this area is still in research phase. DC Distribution network plays a key role in the connection of power generation side and urban loads side, but unfortunately there is still no DC Distribution Voltage Level standard in the world. Aiming at DC Distribution network in China cities, this paper proposed a method to select reasonable DC Voltage Level sequence. To begin with, this method analyzes the factors Voltage Levels affecting and the extent of the impact and give the classification of internal and external factors. Furthermore, considering the constraint principle, impact of AC Distribution network, the factors Voltage Levels affecting, the influence of DC loads and DC projects, gives a set of scientific Voltage grade sequence value: 0.048/0.06/0.22/0.4/0.75/1.5/3/6/10/24/55/100 kV. Subsequently, the rationality of the recommended value is evaluated from five aspects of Voltage supply capacity, network loss, and AC Distribution network adaptability. Finally, from the aspect of load, this paper provide the outline of the future DC Distribution network of China cities. The research results of this paper can provide innovative ideas for future dc Distribution network.

Yi Zhou - One of the best experts on this subject based on the ideXlab platform.

  • study on the Voltage Level sequence of future urban dc Distribution network in china a review
    International Journal of Electrical Power & Energy Systems, 2020
    Co-Authors: Jiandong Duan, Yi Zhou, Zhaoyang Wei
    Abstract:

    Abstract The future urban power system will come in the form of direct current (DC) Distribution network. Compared with alternating current (AC) Distribution network, DC Distribution network has many advantages, but it is an area where has not yet made any practically extensive appearance, this area is still in research phase. DC Distribution network plays a key role in the connection of power generation side and urban loads side, but unfortunately there is still no DC Distribution Voltage Level standard in the world. Aiming at DC Distribution network in China cities, this paper proposed a method to select reasonable DC Voltage Level sequence. To begin with, this method analyzes the factors Voltage Levels affecting and the extent of the impact and give the classification of internal and external factors. Furthermore, considering the constraint principle, impact of AC Distribution network, the factors Voltage Levels affecting, the influence of DC loads and DC projects, gives a set of scientific Voltage grade sequence value: 0.048/0.06/0.22/0.4/0.75/1.5/3/6/10/24/55/100 kV. Subsequently, the rationality of the recommended value is evaluated from five aspects of Voltage supply capacity, network loss, and AC Distribution network adaptability. Finally, from the aspect of load, this paper provide the outline of the future DC Distribution network of China cities. The research results of this paper can provide innovative ideas for future dc Distribution network.

Subhashish Bhattacharya - One of the best experts on this subject based on the ideXlab platform.

  • Mission Profile based Reliability Analysis of a Three-Phase PV Inverter Considering the Influence of High dv/dt on Parasitic Filter Elements
    2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 2019
    Co-Authors: Anup Anurag, Sayan Acharya, Subhashish Bhattacharya
    Abstract:

    Silicon Carbide (SiC) power semiconductor devices in medium Voltage (MV) applications have facilitated the use of power converters at Distribution Voltage Level. In these applications, the semiconductor devices are exposed to a high peak stress (of up to 15 kV) and a very high dv/dt (of up to 100 kV/μs). The increasing use of these power devices has made the effects of the parasitic elements in the filter more prominent, due to the high dv/dt experienced by the passive filter elements during device switching transients. The parasitic elements in the filter inductors causes an increased switching loss in the devices. This paper analyses the effect of these additional losses on the lifetime of the device. A thermal analysis based on a mission profile (solar irradiance and temperature) is provided to account for the additional junction temperature rise due to the high dv/dt and the parasitic filter elements. Rainflow counting method has been used to identify the mean and amplitude of each thermal cycle. An analytical device model and Palgrem Miner rule is used to quantify the damage in the device. Comparisons have been carried out on basis of lifetime, for cases with and without the influence of parasitic capacitances. This analysis can be helpful in validating the importance of the design of filter inductors in these MV applications.

Yizhao Liu - One of the best experts on this subject based on the ideXlab platform.

  • Voltage Level study for dc Distribution grid based on comprehensive evaluation
    2021 IEEE International Conference on Power Electronics Computer Applications (ICPECA), 2021
    Co-Authors: Fangda Wang, Lei Wang, Xinfang Zhang, Jinhao Wang, Yizhao Liu
    Abstract:

    With the development of DC converter technology and the increase in demand for DC power Distribution applications, DC power Distribution systems have received widespread attention. The formulation of Voltage Level sequence in DC power Distribution is of great significance to the development of DC power Distribution. According to the recommended values given in the Chinese national standard “Guideline for standard Voltages of medium and low Voltage DC Distribution system,” two groups of low-Voltage Distribution Voltage Level schemes are initially selected: 110V, 220V, 400V, and 600V, 750V, and 1OOOV. two groups of schemes are comprehensively evaluated separately by using the combination of the analytic hierarchy process and the method of good and bad solution distance, and 400V is finally recommended as the optimal scheme for civil scenarios. The 750V is the optimal solution for the professional field.