针对分布式发电存在的间歇性和波动性对电网安全运行带来的影响,提出了一种含磷酸铁锂电池与铅酸蓄电池的多元储能交直流混合微电网系统,并分别制定了不同的充放电优化协调策略,同时满足了功率调节的快速性及储能配置的经济性。在微电...针对分布式发电存在的间歇性和波动性对电网安全运行带来的影响,提出了一种含磷酸铁锂电池与铅酸蓄电池的多元储能交直流混合微电网系统,并分别制定了不同的充放电优化协调策略,同时满足了功率调节的快速性及储能配置的经济性。在微电网意外失电后,微电网中央控制器执行自动黑启动策略,确保系统失电后的自动重启,保障了重要负荷快速恢复供电。在实时数字仿真仪(real time digital simulator,RTDS)系统上验证了联络线功率控制策略的正确性及有效性。展开更多
Ultra-densification of radio access network(RAN)is a key to efficiently support the exponentially growing mobile data traffic in 5 G era.Furthermore,extremely high frequency band like mm Wave band was utilized to solv...Ultra-densification of radio access network(RAN)is a key to efficiently support the exponentially growing mobile data traffic in 5 G era.Furthermore,extremely high frequency band like mm Wave band was utilized to solve the bandwidth shortage problem.However,untra-dense reusing the same radio resource produced severe interference.And the mm Wave link was very harsh due to frequent blockage by obstacles.Therefore a new RAN architecture needed to be introduced to realize ultra-reliable communications in such a severe radio propagation environment.An architecture of distributed MIMO based RAN was presented.Then,enhanced interference coordination(e IC)was described.Finally,the effectiveness of distributed MIMO based RAN with e IC by computer simulation was showed.展开更多
This study proposes a novel fully distributed coordination control(DCC) strategy to coordinate charging efficiencies of energy storage systems(ESSs). To realize this fully DCC strategy in an active distribution system...This study proposes a novel fully distributed coordination control(DCC) strategy to coordinate charging efficiencies of energy storage systems(ESSs). To realize this fully DCC strategy in an active distribution system(ADS) with high penetration of intermittent renewable generation, a two-layer consensus algorithm is proposed and applied. It collects global information in the first layer and achieves pinning-based DCC in the second layer. Basic objectives of the proposed DCC for ESSs are: à to coordinate the ESSs and improve efficiency using associated marginal charging costs(MCCs) in a fully distributed manner;[ to reduce local power mismatch and power transmission losses;′ to adapt to unintentional communication topology changes. The effectiveness and adaptability of the proposed DCC approach are both validated by simulation results.展开更多
文摘针对分布式发电存在的间歇性和波动性对电网安全运行带来的影响,提出了一种含磷酸铁锂电池与铅酸蓄电池的多元储能交直流混合微电网系统,并分别制定了不同的充放电优化协调策略,同时满足了功率调节的快速性及储能配置的经济性。在微电网意外失电后,微电网中央控制器执行自动黑启动策略,确保系统失电后的自动重启,保障了重要负荷快速恢复供电。在实时数字仿真仪(real time digital simulator,RTDS)系统上验证了联络线功率控制策略的正确性及有效性。
基金The Research and Development for Further Advancement of the 5th Generation Mobile Communication System(No.JP1000254)。
文摘Ultra-densification of radio access network(RAN)is a key to efficiently support the exponentially growing mobile data traffic in 5 G era.Furthermore,extremely high frequency band like mm Wave band was utilized to solve the bandwidth shortage problem.However,untra-dense reusing the same radio resource produced severe interference.And the mm Wave link was very harsh due to frequent blockage by obstacles.Therefore a new RAN architecture needed to be introduced to realize ultra-reliable communications in such a severe radio propagation environment.An architecture of distributed MIMO based RAN was presented.Then,enhanced interference coordination(e IC)was described.Finally,the effectiveness of distributed MIMO based RAN with e IC by computer simulation was showed.
基金National Key R&D Program of China(No.2017YFB0902803)National Natural Science Foundation of China(No.51477029)+1 种基金Natural Science Foundation of Jiangsu Province(No.BK20160674)State Grid Corporation of China(No.SGTYHT/14-JS-188).
文摘This study proposes a novel fully distributed coordination control(DCC) strategy to coordinate charging efficiencies of energy storage systems(ESSs). To realize this fully DCC strategy in an active distribution system(ADS) with high penetration of intermittent renewable generation, a two-layer consensus algorithm is proposed and applied. It collects global information in the first layer and achieves pinning-based DCC in the second layer. Basic objectives of the proposed DCC for ESSs are: à to coordinate the ESSs and improve efficiency using associated marginal charging costs(MCCs) in a fully distributed manner;[ to reduce local power mismatch and power transmission losses;′ to adapt to unintentional communication topology changes. The effectiveness and adaptability of the proposed DCC approach are both validated by simulation results.