AQ-200 SERIES PROTECTION,CONTROL, MEASUREMENT AND MONITORING IEDS

AQ-200 SERIES PROTECTION, CONTROL, MEASUREMENT AND MONITORING IEDS The AQ-200 series provides an optimal protection and control solution for any utility, power plant, wind-power, off-shore, marine, industrial, commercial or institutional electrical protection and control applications. The AQ-200 series offers integrated or segregated protection control, monitoring, measuring solutions with powerful comp­ementary monitoring, measuring, communication and diagnostics informal tion. The AQ-200 is developed using the latest available technologies providing a totally new dimension and options to protection...

ARCTEQ INNOVATION Ultra-accurate measurement technology ACCURATE AND FREQUENCY INDEPENDENT Arcteq’s AQ-200 series protection and control IEDs are deploying patented measurement technology. This has resulted in a very unique combination of class 0.2S power and energy measurement­ accuracy, full dynamic measurement range and frequency independent measurement and protection in a single device. ­ Therefore the AQ-200 series is well applicable for any applications ­ requiring accurate measurement alone, or ­ combination of ­easurement and protection. Frequency independent m measurement­technology...

ARCTEQ INNOVATION Intermittent earth fault protection BACKGROUND Underground cabling of the distribution networks makes them less vulnerable to disturbances, but at the same time leading to higher earth fault currents. Networks are compensated with Petersen coils to keep earth fault currents on lower level. Typically an intermittent earth-fault is a 0.05-1 millisecond self-extinguishing­ flash-over fault from phase to ground causing heavy transient spikes into the electric network. Traditional non-intermittent directional earth fault protection is unable to operate correctly in this type of fault...

ARCTEQ INNOVATION Broad range multi-criteria earth-fault protection THE PROBLEM The increase of medium voltage cabling, connection of distri­ buted generation and compensated networks (Petersen coil) along with distributed compensation has led to new challen­ ges in earth-fault protection of distribution feeders. Challen­ ing g combinations of short cable feeders, long overhead feeders and mixed cable and overhead network is increasing significantly among distribution system operators. Relaying on conventional protection methods may lead to either nuisance trips of healthy feeders or undetected...

AQ 200 series' disturbance recorder is a great tool for analyzing the performance of the power system in network disturbance situations. DISTURBANCE RECORDER CAPACITY The disturbance recorder in AQ 200 series IEDs is a high capacity and fully digital recorder integrated to protection relay. Maximum sample rate of the recorder analog channels is 64 samples per cycle. The recorder supports 96 digital channels simultaneously with measured 9 analog channels. Even all measured and calculated values can be registered as digital channels with 5ms sample time. This feature is useful in for instance motor...

ARCTEQ INNOVATION Cable end differential protection CABLE END FAULTS AND ARC FLASH INCIDENTS Arc flash faults within the switchgear are typically caused by reasons such as human errors, equipment failures, foreign objects, or animals in the gear or by combination of aging materials, dirt and lack of maintenance. As per empiric data, the most common non-human intruded fault location is the cable compartment, and more precisely the cable end. Degrading insulation level or faulty cable connections are the most common causes for cable end faults. Cable faults often start by a small earth-leakage...

AQ-200 PROTECTION FUNCTIONS FEEDER PROTECTION ALGORITHMS NON-DIRECTIONAL AND DIRECTIONAL OVERCURRENT AND EARTH-FAULT PROTECTION (ANSI 50/51, 50/51N, 67, 67N) Up to four stages of non-directional overcurrent and earth-fault protection functions and four stages of directional overcurrent and earth-fault functions with wide setting range of 0.1...40xIn for overcurrent and 0.005...40xIn for earth-fault. Directional overcurrent decision is based on positive sequence voltage and voltage memory is used for close in faults. Definite time, IEC or ANSI inverse time curves with settable reset delays to...

VECTOR JUMP PROTECTION (ANSI 78) The vector jump (or vector shift) protection is suitable to detect most islanding situations and switch off the mains breaker in order to let the generator supply only loads under their rated power value. The algorithm follows the samples of chosen measured voltages (64samples/cycle). Used reference voltage can be all or any phase- to phase or phase- to neutral voltages. MACHINE PROTECTION ALGORITHMS DIFFERENTIAL PROTECTION (ANSI 87T/87G/87M) Generic differential protection applicable for transformers, motors, generators or other machines requiring sensitive protection...

AQ-200 CONTROL FUNCTIONS SETTING GROUP CHANGE CONTROL Change between up to 8 setting groups by any digital signal including GOOSE message or force change overrule of local controls either from setting tool, HMI or SCADA. EXCITATION CONTROL Synchronous machine excitation control can be used for any machines of up to 250MVA. Different control modes include automatic voltage regulator, field current regulator and reactive power control among others. OBJECT CONTROL Up to 5 locally or remotely controllable objects and 5 status indications. Visualize and control objects locally by means of large graphic...

AQTIVATE 200 Setting and configuration software suite All AQ-200 series IEDs can be conveniently configured and set using easy to use and powerful AQtivate 200 free of charge software suite. Protection setting, I/O configuration, logic programming, HMI display, communication protocol parameters and sophisticated on-line monitoring are in-built functions of the software suite. The AQtivate 200 can be used in off-line or on-line mode through Ethernet connection at the relay front port or network at relay rear ports. Inbuilt AQviewer software provides for comtrade disturbance recorder analysis....