The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the co...The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the complementary and efficient use of different types of energy, which is the basic component of the physical layer of the Energy Internet. In this paper, aiming at the demand of the energy application for towns, a distributed energy system based on multi-energy complementary is constructed. Firstly, the supply condition of the distributed energy for the demonstration project is analyzed, and the architecture of the multi-energy complementary distributed energy system is established. Then the regulation strategy of the multi-energy complementary distributed energy system is proposed. Finally, an overall system scheme for the multi-energy complementary distributed energy system suitable for towns is developed, which provides a solid foundation for the development and promotion of the multi-energy complementary distributed energy system.展开更多
Randomness number generation plays a key role in network, information security and IT applications. In this paper, a permutation and complementary algorithm is proposed to use vector complementary and permuta-tion ope...Randomness number generation plays a key role in network, information security and IT applications. In this paper, a permutation and complementary algorithm is proposed to use vector complementary and permuta-tion operations to extend n-variable Logic function space from 22n functions to 22n * 2n! configurations for variant logic framework. Each configuration contains 2n functions can be shown in a 22n-1*22n-1 matrix. A set of visual results can be represented by their symmetric properties in W, F and C codes respec-tively to provide the essential support on the variant logic framework.展开更多
Complementary exponential geometric distribution has many applications in survival and reliability analysis.Due to its importance,in this study,we are aiming to estimate the parameters of this model based on progressi...Complementary exponential geometric distribution has many applications in survival and reliability analysis.Due to its importance,in this study,we are aiming to estimate the parameters of this model based on progressive type-II censored observations.To do this,we applied the stochastic expectation maximization method and Newton-Raphson techniques for obtaining the maximum likelihood estimates.We also considered the estimation based on Bayesian method using several approximate:MCMC samples,Lindely approximation and Metropolis-Hasting algorithm.In addition,we considered the shrinkage estimators based on Bayesian and maximum likelihood estimators.Then,the HPD intervals for the parameters are constructed based on the posterior samples from the Metropolis-Hasting algorithm.In the sequel,we obtained the performance of different estimators in terms of biases,estimated risks and Pitman closeness via Monte Carlo simulation study.This paper will be ended up with a real data set example for illustration of our purpose.展开更多
为减小电动汽车的充电行为对区域配电网的影响,即减少配电网负荷峰值的增加。本文综合考虑不同用户类型的电动汽车在居民小区、政府部门和商业区的行驶规律、停车规律、充电需求,以实现整个区域配电网削峰填谷为目标,提出了一种在V2G(ve...为减小电动汽车的充电行为对区域配电网的影响,即减少配电网负荷峰值的增加。本文综合考虑不同用户类型的电动汽车在居民小区、政府部门和商业区的行驶规律、停车规律、充电需求,以实现整个区域配电网削峰填谷为目标,提出了一种在V2G(vehicle-to-grid)模式下,通过分时电价引导的不同负荷类型电动汽车从时间和空间上双重互补进行有序充电的方法。以IEEE RBTS-5系统的第1,2条10 k V线路负荷需求为例,用蒙特卡洛方法模拟了本文所提的方法,验证了时空互补有序充电的方法对区域配电网总负荷削峰填谷的有效性。展开更多
针对风光互补发电系统并网功率波动问题,在考虑平抑功率波动对储能性能需求的基础上,将蓄电池和超级电容器组成复合储能系统(hybrid energy storage system,HESS)应用到风光互补微电网中,并提出了复合储能的能量管理和控制策略。能量管...针对风光互补发电系统并网功率波动问题,在考虑平抑功率波动对储能性能需求的基础上,将蓄电池和超级电容器组成复合储能系统(hybrid energy storage system,HESS)应用到风光互补微电网中,并提出了复合储能的能量管理和控制策略。能量管理方面,遵循超级电容器优先工作原则,通过判断超级电容器端电压大小来决定复合储能的工作方式;超级电容器用来平抑风光发电并网波动功率的高频部分,蓄电池平抑低频部分,进而减少蓄电池的充放电次数,延长其使用寿命;控制策略方面,蓄电池的双向DC/DC变换器采用恒功率控制,超级电容器的双向DC/DC变换器采用恒母线电压控制,保证了直流母线电压的稳定,实现了复合储能的双向充放电控制。最后,利用PSCAD软件搭建了含复合储能的风光互补微电网仿真模型,仿真结果验证了所提控制策略的有效性和正确性。展开更多
文摘The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the complementary and efficient use of different types of energy, which is the basic component of the physical layer of the Energy Internet. In this paper, aiming at the demand of the energy application for towns, a distributed energy system based on multi-energy complementary is constructed. Firstly, the supply condition of the distributed energy for the demonstration project is analyzed, and the architecture of the multi-energy complementary distributed energy system is established. Then the regulation strategy of the multi-energy complementary distributed energy system is proposed. Finally, an overall system scheme for the multi-energy complementary distributed energy system suitable for towns is developed, which provides a solid foundation for the development and promotion of the multi-energy complementary distributed energy system.
文摘Randomness number generation plays a key role in network, information security and IT applications. In this paper, a permutation and complementary algorithm is proposed to use vector complementary and permuta-tion operations to extend n-variable Logic function space from 22n functions to 22n * 2n! configurations for variant logic framework. Each configuration contains 2n functions can be shown in a 22n-1*22n-1 matrix. A set of visual results can be represented by their symmetric properties in W, F and C codes respec-tively to provide the essential support on the variant logic framework.
文摘Complementary exponential geometric distribution has many applications in survival and reliability analysis.Due to its importance,in this study,we are aiming to estimate the parameters of this model based on progressive type-II censored observations.To do this,we applied the stochastic expectation maximization method and Newton-Raphson techniques for obtaining the maximum likelihood estimates.We also considered the estimation based on Bayesian method using several approximate:MCMC samples,Lindely approximation and Metropolis-Hasting algorithm.In addition,we considered the shrinkage estimators based on Bayesian and maximum likelihood estimators.Then,the HPD intervals for the parameters are constructed based on the posterior samples from the Metropolis-Hasting algorithm.In the sequel,we obtained the performance of different estimators in terms of biases,estimated risks and Pitman closeness via Monte Carlo simulation study.This paper will be ended up with a real data set example for illustration of our purpose.
文摘为减小电动汽车的充电行为对区域配电网的影响,即减少配电网负荷峰值的增加。本文综合考虑不同用户类型的电动汽车在居民小区、政府部门和商业区的行驶规律、停车规律、充电需求,以实现整个区域配电网削峰填谷为目标,提出了一种在V2G(vehicle-to-grid)模式下,通过分时电价引导的不同负荷类型电动汽车从时间和空间上双重互补进行有序充电的方法。以IEEE RBTS-5系统的第1,2条10 k V线路负荷需求为例,用蒙特卡洛方法模拟了本文所提的方法,验证了时空互补有序充电的方法对区域配电网总负荷削峰填谷的有效性。
文摘针对风光互补发电系统并网功率波动问题,在考虑平抑功率波动对储能性能需求的基础上,将蓄电池和超级电容器组成复合储能系统(hybrid energy storage system,HESS)应用到风光互补微电网中,并提出了复合储能的能量管理和控制策略。能量管理方面,遵循超级电容器优先工作原则,通过判断超级电容器端电压大小来决定复合储能的工作方式;超级电容器用来平抑风光发电并网波动功率的高频部分,蓄电池平抑低频部分,进而减少蓄电池的充放电次数,延长其使用寿命;控制策略方面,蓄电池的双向DC/DC变换器采用恒功率控制,超级电容器的双向DC/DC变换器采用恒母线电压控制,保证了直流母线电压的稳定,实现了复合储能的双向充放电控制。最后,利用PSCAD软件搭建了含复合储能的风光互补微电网仿真模型,仿真结果验证了所提控制策略的有效性和正确性。
