ABB RED670 Product Manual

Also see for RED670 Relion 670 series: Installation manual Installation manual Commissioning manual Product guide Technical reference manual

Contents

ABB RED670 Product Manual Manual pdf 27 page image

an IED, either for forcing the unused inputs in other functionblocks to a certain level/value, or for creating certain logic.13. MonitoringMeasurements CVMMXN, CMMXU, VNMMXU, VMMXU,CMSQI, VMSQIThe measurement functions are used to get on-line informationfrom the IED. These service values make it possible to displayon-line information on the local HMI and on the Substationautomation system about:• measured voltages, currents, frequency, active, reactiveand apparent power and power factor• primary and secondary phasors• positive, negative and zero sequence currents and voltages• mA, input currents• pulse countersSupervision of mA input signalsThe main purpose of the function is to measure and processsignals from different measuring transducers. Many devicesused in process control represent various parameters such asfrequency, temperature and DC battery voltage as low currentvalues, usually in the range 4-20 mA or 0-20 mA.Alarm limits can be set and used as triggers, e.g. to generatetrip or alarm signals.The function requires that the IED is equipped with the mA inputmodule.Event counter CNTGGIOEvent counter (CNTGGIO) has six counters which are used forstoring the number of times each counter input has beenactivated.Disturbance report DRPRDREComplete and reliable information about disturbances in theprimary and/or in the secondary system together withcontinuous event-logging is accomplished by the disturbancereport functionality.Disturbance report DRPRDRE, always included in the IED,acquires sampled data of all selected analog input and binarysignals connected to the function block with a, maximum of 40analog and 96 binary signals.The Disturbance report functionality is a common name forseveral functions:• Sequential of events• Indications• Event recorder• Trip value recorder• Disturbance recorder• Fault locatorThe Disturbance report function is characterized by greatflexibility regarding configuration, initiating conditions, recordingtimes, and large storage capacity.A disturbance is defined as an activation of an input to theAxRADR or BxRBDR function blocks, which are set to triggerthe disturbance recorder. All signals from start of pre-fault timeto the end of post-fault time will be included in the recording.Every disturbance report recording is saved in the IED in thestandard Comtrade format. The same applies to all events,which are continuously saved in a ring-buffer. The local HMI isused to get information about the recordings. The disturbancereport files may be uploaded to PCM600 for further analysisusing the disturbance handling tool.Sequential of events DRPRDREContinuous event-logging is useful for monitoring the systemfrom an overview perspective and is a complement to specificdisturbance recorder functions.The sequential of events logs all binary input signals connectedto the Disturbance report function. The list may contain up to1000 time-tagged events stored in a ring-buffer.Indications DRPRDRETo get fast, condensed and reliable information aboutdisturbances in the primary and/or in the secondary system it isimportant to know, for example binary signals that havechanged status during a disturbance. This information is used inthe short perspective to get information via the local HMI in astraightforward way.There are three LEDs on the local HMI (green, yellow and red),which will display status information about the IED and theDisturbance report function (triggered).The Indication list function shows all selected binary inputsignals connected to the Disturbance report function that havechanged status during a disturbance.Event recorder DRPRDREQuick, complete and reliable information about disturbances inthe primary and/or in the secondary system is vital, for example,time-tagged events logged during disturbances. Thisinformation is used for different purposes in the short term (forexample corrective actions) and in the long term (for examplefunctional analysis).Line differential protection RED670 ANSI 1MRK505226-BUS DCustomizedProduct version: 1.2ABB 27