Due to the very high demand for Internet data capacity from mobile and fixed customers as well as the saturation of conventional frequency bands by numerous services, many countries have opened the E band, for broadca...Due to the very high demand for Internet data capacity from mobile and fixed customers as well as the saturation of conventional frequency bands by numerous services, many countries have opened the E band, for broadcasting services. E-band involves the creation of a significant number of links in a given area. The present work addressed the problem that arises in the context of transmission is that of assigning the frequencies of this band to these multiple transmission links. The aim of this work is to study and plan the radio links of the 80 GHz frequency and to implement them in a tool in order to define an optimal distribution on the telecommunications network by guaranteeing maximum flow of data traffic while minimizing the interference. The contribution of this work is part of its unique subject: the planning of E-band frequencies for improving the quality of service of transmission in the network of telecommunications operators. Also, it intends to contribute to the resolution of unsatisfied situations of poor planning of E-band radio frequencies in telecommunications networks. With the aim of opening several opportunities for alternative high-speed data transport solutions, our work has helped prove that E-band transmission links are very efficient with capacities in the gigabyte range.展开更多
The increase in wind power penetration has weakened the equivalent inertia of the power system,posing a significant challenge to frequency stability.In this paper,a frequency trajectory planning(FTP)-based frequency r...The increase in wind power penetration has weakened the equivalent inertia of the power system,posing a significant challenge to frequency stability.In this paper,a frequency trajectory planning(FTP)-based frequency regulation(FR)strategy is proposed for permanent magnet synchronous generator-based wind turbines equipped with an energy storage system(ESS)on the DC link.The core idea is that the frequency index provided by the grid code is used to plan a safe frequency trajectory when the system frequency fluctuates.The FR power provided by the ESS is controlled by tracking the planned frequency trajectory to compensate for the unbalanced power in the system,provide inertia support,and ensure the frequency stability of the power grid.The proposed strategy can suppress the frequency fluctuation and optimize the FR power of the ESS.It also effectively circumvents the complex parameter design process of virtual inertia control.The simulation model is established in Matlab/Simulink to verify the effectiveness of the control strategy.展开更多
文摘Due to the very high demand for Internet data capacity from mobile and fixed customers as well as the saturation of conventional frequency bands by numerous services, many countries have opened the E band, for broadcasting services. E-band involves the creation of a significant number of links in a given area. The present work addressed the problem that arises in the context of transmission is that of assigning the frequencies of this band to these multiple transmission links. The aim of this work is to study and plan the radio links of the 80 GHz frequency and to implement them in a tool in order to define an optimal distribution on the telecommunications network by guaranteeing maximum flow of data traffic while minimizing the interference. The contribution of this work is part of its unique subject: the planning of E-band frequencies for improving the quality of service of transmission in the network of telecommunications operators. Also, it intends to contribute to the resolution of unsatisfied situations of poor planning of E-band radio frequencies in telecommunications networks. With the aim of opening several opportunities for alternative high-speed data transport solutions, our work has helped prove that E-band transmission links are very efficient with capacities in the gigabyte range.
文摘The increase in wind power penetration has weakened the equivalent inertia of the power system,posing a significant challenge to frequency stability.In this paper,a frequency trajectory planning(FTP)-based frequency regulation(FR)strategy is proposed for permanent magnet synchronous generator-based wind turbines equipped with an energy storage system(ESS)on the DC link.The core idea is that the frequency index provided by the grid code is used to plan a safe frequency trajectory when the system frequency fluctuates.The FR power provided by the ESS is controlled by tracking the planned frequency trajectory to compensate for the unbalanced power in the system,provide inertia support,and ensure the frequency stability of the power grid.The proposed strategy can suppress the frequency fluctuation and optimize the FR power of the ESS.It also effectively circumvents the complex parameter design process of virtual inertia control.The simulation model is established in Matlab/Simulink to verify the effectiveness of the control strategy.
