Based on the analysis of the demand for various services, the development direction and network building strategy are presented. It is believed that ATM network technology is the best choice for the backbone network in SPDnet.

In this paper, the application project of remote video supervision system in sub station is discussed. The contents include the basic function of the remote video supervision,the additive function for the application in substation,the network architecture design of substation video supervision system,the use skill of E1 access facility,etc. It is useful for the designing and construction of the remot e video supervision system in substation.

From Experiments to Network Building: Trends in the Use of Research for Reconstructing Working Life

In more recent years, new patterns have emerged, such as complementary research roles in network building.

On the basis of a survey of 181 foreign-invested enterprises (FIEs) operating in China, we find that a market orientation fosters both types of network building.

Network control is decomposed in six parts: switch control, resource partitioning, virtual network building, virtual network control, generic services, and data-path components.

Network building conferences in support of industry-wide innovations

Ongoing project responsibilities included Customer liaison, WAN/LAN network architecture design, installations and configuration.

Scalability of the above properties to large networks is an overriding concern for protocol and network architecture design.

Therefore, to avoid packet loss is still a serious task for all types of network traffics in high-speed network architecture design.

This paper presents a method for extending the classical loss Formula Coefficients(LFC) to what is called Complex Loss Formula Coefficients(CLFC) theoretically, which makes it much simpler to evaluate active and reactive power transmission losses in short-cerm economic dispatch calculations (EDC). The classical LFC are still being widely used in practice, owing primarily to its simplicity, utility and rapid computing speed. The coefficients are derived with the assumptions of linear nonconforming loads and linear...

This paper presents a method for extending the classical loss Formula Coefficients(LFC) to what is called Complex Loss Formula Coefficients(CLFC) theoretically, which makes it much simpler to evaluate active and reactive power transmission losses in short-cerm economic dispatch calculations (EDC). The classical LFC are still being widely used in practice, owing primarily to its simplicity, utility and rapid computing speed. The coefficients are derived with the assumptions of linear nonconforming loads and linear generator reactive/active power output relationships. The latter may be not the case in practical systems. Moreover, the coefficients can be used only in real power EDC.The presented CLFC are developed in a similar way to that applied by Shoults[3]. More than two load cases representing various load levels of a given system are needed to pro- vide sample points in linear nonconforming load relationship approximations by least squares fitting. It doesn't matter whether reactive/active power changes in a linear relationship or not,for all the active and reactive power outputs are considered to be independent variables, as has been shown in eqn(2); in which BGG; BGO, BGO, BOO are complex coefficients in matrics, SL and SG complex losses and generating powers respectively. By the use of this extended loss formula, it. is not difficulty that the calculations of real and reactive power losses PL and QL, the four incremental losses, i. e. PL/ PG, PL/ QG, QL/ PG and QL/ QG can be carried out. This makes it possible to accomplish short-term real and reactive power economic dispatch without load flow calculations in each iteration, which wasts more computational times and memory requirements.A computer program is made for calculating this complex coefficients. A 5-node system shown in fig. 2, has been studied, for which losses computer by P-Q decomposition load flow are compared to those by the CLFC, using three load flow cases as sample points (tab. 1). The results given in tab.2 are satisfactory. The study of 70-node system is outlined in tab.3. It is shown that the Complex Loss Formula Coefficients prone to be more accurate than the classic LFC in calculation of real power losses.

This paper deals with access control strategies for entrance node of integrated multi-traffic network.Here,variable bit rate techniques are used to increase the system flexibility.Using queueing analysis and simulation experiment,the system perfomance is evaluated for several control strategies.with numerical results, some tradeoffs are investigated to provide available engineering reference for the improvement of system performance.

Single-point multi-address wireless communication system is suitable for local network configuration. The central station in Power Supply Bureau provided with voice and data channels to city telephone center. Substations and periphery stations can have several user lines or branch channels. Features of this system are: flexibility in channel configuration, nearly complete interfaces, faster for construction, easier for operation and maintenance. Capital cost is only a half of that for cable, microwave, optical...

Single-point multi-address wireless communication system is suitable for local network configuration. The central station in Power Supply Bureau provided with voice and data channels to city telephone center. Substations and periphery stations can have several user lines or branch channels. Features of this system are: flexibility in channel configuration, nearly complete interfaces, faster for construction, easier for operation and maintenance. Capital cost is only a half of that for cable, microwave, optical fiber and other communication systems.