ARRESTER TYPE POWER TRANSMISSION/DISTRIBUTION LINE CURRENT/VOLTAGE MEASURING APPARATUS AND POWER TRANSMISSION/DISTRIBUTION LINE CURRENT/VOLTAGE MEASURING SYSTEM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an arrester type power transmission/distribution line current and voltage meter which can measure voltage and current of a power transmission/distribution line while allowing simple installation thereof at an arbitrary location with a simple work along with a smaller size and a less cost by accurately accomplishing insulation to the ground without use of a transformer for an instrument and a current transformer for the instrument requiring a costly and larger insulator.;SOLUTION: There are arranged a current measuring device 12 which is detachably mounted on a power transmission/distribution line 1 to detect current thereof, an arrester device 14 which performs an arrester function through a resistance element 50 for a high voltage built into an insulator 48 while having a voltage sensor for detecting the voltage of the power transmission/distribution line 1 and an optical signal conversion means (28) for converting the sensed current signal of the power transmission/distribution line 1 to an optical signal while a light transmission path 52 is provided in the insulator 48 of the arrester device 14. Moreover, a photodetecting means (90) is provided and inputs the optical signal to convert the current information of the power transmission/distribution line to an electrical signal.;COPYRIGHT: (C)2002,JPO