AOC 15 user manual PLC control system monitoring

9.0 Wind Turbine Operation						71
	Instrumentation	60hz	50hz	action	reset when cleared	status lights
Grid parameters	grid monitor
over voltage:		400-540V	350-450V	disconnect and park	automatic	grid monitor light
under voltage:		380-460V	300-400V	disconnect and park	automatic	grid monitor light
(response time)		adj 1-10secs	adj 1-10secs
phase loss				disconnect and park	automatic	grid monitor light
phase reversal				disconnect and park	automatic	grid monitor light
Rotor Speed	2 speed sensors on
	high speed shaft
Rotor nominal:		1800rpm	1500rpm	if no faults connect to grid		turbine on line
Rotor full load:		1840rpm	1535rpm
Rotor overpower:		1860rpm	1550rpm	disconnect and park	automatic	rotor overpower
Rotor over-speed		1875rpm	1560rpm	disconnect and park	manual	rotor overspeed
Rotor under-speed:		1760rpm	1460rpm	disconnect and park	automatic
(freewheel option)		1800rpm	1500rpm	disconnect and freewheel	automatic
(coast up option)		< 50rpm after 1 min?	< 50rpm after 1 min?	disconnect and park	automatic	rotor overspeed flashing
Wind Speed	2 anemometers
wind in range		11mph - 50mph	11mph - 50mph	if no faults release brake
low wind		8mph	8mph	disconnect and park or freewheel	automatic
high wind		50 mph	50 mph	disconnect and park	automatic	high wind speed
Power output	watts transducer
low power		% < set points	% < set points	disconnect and park	automatic
		from power curve	from power curve
Brake status
brakes applied	plc signal			disconnect and park	automatic	brakes applied
parking brake fault	current sensor			disconnect and park	manual	brakes applied flashing
Generator Temperature	3 NC thermostats
over temperature		145 deg C	145 deg C	disconnect and park	automatic	generator thermal alarm

Table 9.1-2 PLC control system monitoring

NOTICE: Use of the material contained in this document is subject to the warning on page Iv and the disclaimer on page v of this document.

DOC012R02 AOC 15/50 User Manual Nov 2001