Tham khảo tài liệu 'wind power impact on power system dynamic part 16', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 508 Wind Power with biomass or thermo solar power plants both having some capacity of production regulation. These new concepts enable to the a. Clustering of wind generation onshore and offshore for power output smoothing power control and partial curtailment in large wind power plants. b. Enhancement of distributed generation systems DGS use by regional local treatment of biomass for electricity generation integrated with wind and PV applications. c. Correlation of renewable distributed resources assessment of the excess of renewable energy generation and need for added large local energy storage capacity . pumped hydro FC H2 VRB batteries and plug-in vehicles Additional remote reactive power control In order to assure the wind power plants have the capability to deliver reactive power during voltage dips thus providing support for the network voltage some TSOs are requiring reactive voltage support similar to the one presented in Fig. 6. Fig. 6. Characteristic curve of reactive power delivery by wind power plants during after voltage dips at t 0 . This capability is also required to enable the adjustment by request of the TSO of the reactive power injected in the network in predefined ranges that in some countries assume values within the interval tgỹ e 0 . Wind power security of supply One of the main negative characteristics related to the wind generation usually pointed out by the power systems planners and operators is its non contribution for the security of supply due to its intrinsic time dependency and variability. Although the wind power variability and the reduced contribution to the capacity credit of a power system is a well know characteristic of the wind generation one should be also aware of its trustful contribution for the system security of supply in time scales larger than a few days. In Fig. 7 the energy generation contribution of several renewable sources is compared in terms of annual equivalent number of rated hours being .
