OBS数据信道分群调度机制在波带交换中的应用

介绍了光突发交换(OBS)网络中的数据信道分群调度策略,并将此信道分群调度策略引入多粒度光交换网络中,提出了一种新的基于OBS信道分群的负载平衡波带分配策略。分析表明,该调度策略能达到改善网络性能的目的。

考虑调峰成本的大规模电动汽车分群调度策略

随着大规模新能源和电动汽车(EV)并网,电网出现功率波动、调峰成本过高等问题。为缓解电网调峰压力,实现电网安全、经济运行,提出一种考虑调峰成本的EV分群调度策略。首先以EV与电网互动方式、充放电特性为判别量对EV进行分群,分别构建单向、双向、换电型3种EV负荷模型;其次考虑EV参与调峰的成本因素,构建计及成本的EV调峰定价模型,并基于该模型以负荷峰谷差最小为目标,对区域电网下的集群EV进行调峰定价;然后根据调峰定价阶段得到的结果制定EV参与调峰的动态电价,以系统各项运行成本的期望值之和最小为目标安排EV负荷。最后在改进的区域电网系统中仿真,仿真结果验证了调峰策略的有效性以及该定价策略的经济性。

ACS-based resource assignment and task scheduling in grid

To solve the deadlock problem of tasks that the interdependence between tasks fails to consider during the course of resource assignment and task scheduling based on the heuristics algorithm, an improved ant colony system （ACS） based algorithm is proposed. First, how to map the resource assignment and task scheduling （RATS） problem into the optimization selection problem of task resource assignment graph （TRAG） and to add the semaphore mechanism in the optimal TRAG to solve deadlocks are explained. Secondly, how to utilize the grid pheromone system model to realize the algorithm based on ACS is explicated. This refers to the construction of TRAG by the random selection of appropriate resources for each task by the user agent and the optimization of TRAG through the positive feedback and distributed parallel computing mechanism of the ACS. Simulation results show that the proposed algorithm is effective and efficient in solving the deadlock problem.