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This paper outlines the process and procedures adopted to design the architecture and functional requirements of instrumentation and control (I&C) based on IEC 61850 standards. The I&C system of the electrical power distribution network will conform to the standards, specifications, and interfaces as set down by the ITER Organization and applied by suppliers in domestic agencies. The IEC 61850 system will ensure the reliable smooth operation and maintenance of the ITER electrical control system at Cadarache, France. [ABSTRACT FROM PUBLISHER]

Laser Mégajoule (LMJ) is a laser facility being built by the French nuclear science directorate, Commissariat a l'Energie Atomique. This facility is a large fiashlamp pumped laser (1.8-Mi optical output). The Pulsed Power Conditioning System of LMJ is based on a modular design of 480 modules (400-MJ energy capacitor bank). A new capacitor bank module (CBM) for the LMJ Power Conditioning System has been developed by the Institute of High Current Electronics (IHCE, Tomsk) in collaboration with International Technologies for High Pulsed Power (France). Two such modules were produced and tested in IHCE. The main parts of the CBM are the following: high-voltage power supplies, command control system, air conditioning system, capacitor block, and cables delivering the energy to a load. The parameters of the module are the following: total rated capacitance of 2900 (+4%) μF, charging voltage up to 24 kV, peak current amplitude of 240 kA, peak stored energy up to 864 kJ, pulsewidth at 10% of peak power of 360 μs, dimensions of 2.3 × 1.5 × 2.5 m3, and weight of ∼2500 kg. In nominal regime (24-kV charging voltage, 40-m length cables), the energy delivered to fiashlamps in each channel is 74 kJ (86% efficiency). No failures were observed in more than 1000 test shots, and all parameters of the CBM are well within the requirements. Detailed description of the module design, performance, and test results are stated in this paper. [ABSTRACT FROM AUTHOR]

A good representativeness of the test setup used for the qualification of solar arrays is fundamental. We know now that the fiashover current involved in the electrostatic discharge is related with the total dielectric surface neutralized during the electrostatic discharge. This paper presents experiments on samples of different sizes, performed in a large vacuum chamber, JONAS, installed in ONERA/DESP, Toulouse, France. The samples are tested in the inverted voltage gradient configuration obtained with electrons. We observed that secondary arcs obtained on a large sample (i.e., with a long fiashover) had much longer durations than those on a small sample, i.e., the flashover is a critical parameter for secondary arc initiation and sustainment. [ABSTRACT FROM AUTHOR]