Showing papers by "Lin Jiang published in 2008"
20 Jul 2008
TL;DR: In this paper, the location of flexible AC transmission system (FACTS) devices and the setting of their control parameters are optimized by a bacterial swarming algorithm (BSA) to improve the performance of the power network.
Abstract: In this paper, flexible AC transmission system (FACTS) devices are optimally allocated in a power network to achieve optimal power flow (OPF) solution. The location of FACTS devices and the setting of their control parameters are optimized by a bacterial swarming algorithm (BSA) to improve the performance of the power network. Two objective functions are simultaneously considered as the indexes of the system performance: maximization of system loadability in system security margin and minimization of total generation fuel cost. Four types of FACTS devices are modeled and incorporated in the OPF problem. Simulation studies are undertaken on a standard IEEE 30-bus test system. Results demonstrate that the steady state performance of the power system can be effectively enhanced due to the optimal allocation of multi-type FACTS devices.
29 citations
06 Apr 2008
TL;DR: In this article, a novel fault phase selection scheme is proposed for double-circuit transmission lines, which provides an approach to accurately classify the fault types by dealing with six-phase and a model currents using a morphological transformation.
Abstract: There are problems arising in fault type classification in double circuit transmission lines due to the mutual coupling between the two circuits under fault conditions. A novel fault phase selection scheme is proposed in this paper, which provides an approach to accurately classify the fault types by dealing with six-phase and a model currents using a morphological transformation. The fault characteristics can be effectively extracted from the associating currents by the morphological transformation. The fault phase selection scheme is tested on a simulation model under different fault types, location, resistance and inception angle. All the test results show that the proposed scheme is well suited for classifying fault types in double circuit transmission lines.
8 citations
01 Jun 2008
TL;DR: The FLEXICON MAA co-simulation toolset as mentioned in this paper was developed for marine, automotive, and aerospace applications, allowing simulation and assessment of system performance prior to implementation and support for rapid prototyping.
Abstract: Development of distributed control systems requires tools that can deal with high complexity, integration of design information from multiple domains, and analysis support for the overall design covering both technical and commercial performance. Currently, no integrated set of multidisciplinary design tools exist that can do this. The FLEXICON project created a toolset for marine, automotive, and aerospace (MAA) applications, allowing simulation and assessment of system performance prior to implementation and support for rapid prototyping. In this paper the application of the FLEXICON MAA co-simulation toolset to a Rolls—Royce high-speed ship demonstrator is described. Results collected by Rolls—Royce during the demonstration activities showed that a reduction of 30 per cent in the development time could be achieved using the toolset.
3 citations
16 Dec 2008
TL;DR: Test results show that the quality of solutions to the ORPD problems is improved and the calculation time can be reduced enormously so as to fulfill the practical requirement for potential application in power systems operation.
Abstract: This paper presents a parallel particle swarm optimisation (PPSO) approach for solving the distributed optimal reactive power dispatch (ORPD) problem. The proposed method is a combination of parallel computation based on message passing interface (MPI) and particle swarm optimisation algorithm. After dividing a large scale power system into a group of small subsystems, ORPD problem of each subsystem is solved paralleled. Due to the size of each ORPD problem is reduced, it become easier to solve the optimization problem. Results from each subsystem will be combined together to find solution of whole system. The algorithm is evaluated on the IEEE 118 bus test system on two platforms: a PC cluster and a supercomputer. Test results show that the quality of solutions to the ORPD problems is improved and the calculation time can be reduced enormously so as to fulfill the practical requirement for potential application in power systems operation.
3 citations
06 Apr 2008
TL;DR: In this paper, the authors investigated the influence of the UHV transmission line to the TTCs between the provincial power grids in CCG with transient stability constraints and found that there is notable change of the values of the TTC with the operation of the ultra high voltage (UHV) transmission line.
Abstract: The first 1000 kV ultra high voltage (UHV) AC transmission line in China is being constructed from Shanxi province to Hubei province with 645 km distance, connecting Central China Grid (CCG) and North China Grid (NCG) Total Transfer Capability (TTC) and Available Transfer Capability (ATC) are two main concerns to reliably transfer power between interconnected power grids This paper investigates the influence of the UHV transmission line to the TTCs between the provincial power grids in CCG with transient stability constraints The NCG and provincial grids in CCG are modeled by an equivalent single generator system based on the center of inertia (COI) coordinate Based on different operation condition of the UHV transmission line continuous load flow method, TTCs between the provincial grids in CCG are calculated Results show that there is notable change of the values of the TTCs with the operation of the UHV transmission line A detailed NCG-CCG interconnected power grid model is setup by using the Power System Analyze Software Package (PSASP) and the equivalent three- generator system (ETS) method is validated
3 citations