This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System ...This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System are required to comply with the Grid Code. The Grid Code was originally developed with conventional synchronous generators. Since Wind Turbine Generators don’t have the same characteristics as synchronous generators, it was considered appropriate to develop a new set of Grid Code provisions specifically for Wind Farm Power Stations in relation with specific characteristic of Kosovo Power System. With high excepted penetration of wind power, a simultaneous loss of Wind Farms generation will put in the risk the security and reliability of Power System. Therefore, the main requirements for Wind farm power stations concern the fault ride through capability, frequency operation range, and reactive power capability of wind turbines. In the case of grid faults wind turbines have to supply a definite reactive power depending on the instantaneous voltage level of connection point and they must return quickly to normal operation.展开更多
针对基于路径分裂策略辅助极化码串行抵消列表(Path Splitting Selecting strategy based on Search Set under the Successive Cancellation List,PSS-SS-SCL)译码算法性能的不足,提出了一种利用增强型奇偶校验码改进PSSSS-SCL译码算法...针对基于路径分裂策略辅助极化码串行抵消列表(Path Splitting Selecting strategy based on Search Set under the Successive Cancellation List,PSS-SS-SCL)译码算法性能的不足,提出了一种利用增强型奇偶校验码改进PSSSS-SCL译码算法的EPC-MS-SCL(Enhanced Parity Check and Monte Carlo Segment aided Successive Cancellation List)译码算法.该算法在极化码编码阶段对信息序列做分段处理,在每段末尾添加增强型奇偶校验码,译码器仅在译码搜索集内元素时进行路径分裂,其余元素直接执行硬判决译码,并在译码完一段序列后立即对该段进行校验,仅保留通过校验的路径,从而减少了错误路径对正确路径的竞争,使正确路径保留到译码结束的概率增加,改善了译码性能,同时减少了译码列表数,使得译码复杂度更低.仿真结果表明,与PSS-SS-SCL译码算法相比较,所提出算法能在一定程度上改善其性能增益且具有更低的译码复杂度.展开更多
文摘This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System are required to comply with the Grid Code. The Grid Code was originally developed with conventional synchronous generators. Since Wind Turbine Generators don’t have the same characteristics as synchronous generators, it was considered appropriate to develop a new set of Grid Code provisions specifically for Wind Farm Power Stations in relation with specific characteristic of Kosovo Power System. With high excepted penetration of wind power, a simultaneous loss of Wind Farms generation will put in the risk the security and reliability of Power System. Therefore, the main requirements for Wind farm power stations concern the fault ride through capability, frequency operation range, and reactive power capability of wind turbines. In the case of grid faults wind turbines have to supply a definite reactive power depending on the instantaneous voltage level of connection point and they must return quickly to normal operation.
文摘针对基于路径分裂策略辅助极化码串行抵消列表(Path Splitting Selecting strategy based on Search Set under the Successive Cancellation List,PSS-SS-SCL)译码算法性能的不足,提出了一种利用增强型奇偶校验码改进PSSSS-SCL译码算法的EPC-MS-SCL(Enhanced Parity Check and Monte Carlo Segment aided Successive Cancellation List)译码算法.该算法在极化码编码阶段对信息序列做分段处理,在每段末尾添加增强型奇偶校验码,译码器仅在译码搜索集内元素时进行路径分裂,其余元素直接执行硬判决译码,并在译码完一段序列后立即对该段进行校验,仅保留通过校验的路径,从而减少了错误路径对正确路径的竞争,使正确路径保留到译码结束的概率增加,改善了译码性能,同时减少了译码列表数,使得译码复杂度更低.仿真结果表明,与PSS-SS-SCL译码算法相比较,所提出算法能在一定程度上改善其性能增益且具有更低的译码复杂度.
