The objective of this study was to describe the health status of electricity workers exposed to electromagnetic fields during their job. Two groups of exposed workers were studied from 1978 to 1993: the live line workers (n = 121) and the substation workers (n = 232.7) of the French Electricity Company (EDF). A control group was randomly selected from all the company non-management male employe...

The knowledge of ground return current in fault occurrence plays a key role in the dimensioning of the earthing grid of substations and of cable sealing end compounds, in the computation of rise of earth potential at substation sites and in electromagnetic interference (EMI) on neighbouring parallel metallic conductors (pipes, handrails, etc.). Moreover, the ground return current evaluation is ...

In order to expand the simulation scale of smart substation, a simulation model of the inlet-outlet line unit, as described by the 0/108 S conductance for multivalued coefficients pre-storage is presented in this paper. As a part of orders decomposition, the address conversion circuit for multivalued coefficients can reduce the computational burden of processing elements. For the convenience of...

This paper presents an efficient observation concerning the enhancement of smart grid (SG) based on optimal placement phasor measurement units (OPP) using nonlinear programming (NLP). The proposed algorithm tries to achieve two objectives: (i) ascertain minimum number (PMUs) and (ii) increase redundancy SG at all buses. Synchronized current voltage phasors are obtained enhance accuracy state es...

in this article, a multi-objective function for placement of distributed generation (dg) and capacitors with thetap setting of under load tap changer (ultc) transformer is introduced. most of the recent articles have paidless attention to dg, capacitor placement and ultc effects in the distribution network simultaneously. insimulations, a comparison between different modes was carried out with,...

Since a power supply substation of the magnetic levitation train system includes an inverter which is necessary to change the frequency of power, it has a different characteristic comparing to any other railway system. Nowadays, a study is undergoing to determine rating of facilities constituting a power supply system and modeling that system. This paper proposes an analysis model for the power...

This paper talks about the implementation of the IEC-61850 standard using a CORBA middleware as communication mechanism. This standard specifies communication mechanisms for automation systems in electric substations. CORBA-based implementations of control systems open new perspectives for advanced control, because they ease the development of new functionality and enhance evolvavility of appli...

In the Saudi Master Gas System Expansion project, portal frame of overhead line high-voltage substation was reformed. The safety and stability laying cable guaranteed through optimized design supporting structure production head. Good practical results have been obtained, construction quality period guaranteed. It provides a guiding operational statement for improved technology in substation.

This paper introduces the overseas smart substation technology scheme, describes communication network architecture and equipment redundancy configuration in typical test compares similarities differences between China’s technology. The distribution of measurement control functions substations that are different from designs explained detail. architectures illustrated. Finally, suggestions Smar...