Functional block diagram of the ASZKG relay
General presentation
The ASZKG relay is an intelligent electronic device (IED) designed to provide automatic synchronising of generators connected to one or two busbars. It belongs to the PROTECTA range. This range, in both hardware and software terms, is based on a modular device. Thanks to this modular architecture, the modules are assembled and configured according to the user’s needs; from then on, the software determines the functions.
The EuroCAP configuration software, available free of charge, provides a user-friendly and flexible application for protection, control and measurement functions, allowing the use of fully customisable devices.
General features
- Native intelligent electronic device (IED) compliant with the IEC 61850 standard, Edition 2 compatible
- Scalable hardware adapting to different applications
- Rack width of 84TE or 42TE (height: 3U)
- The predefined factory configuration can be customised to the user’s specifications with the powerful EuroCAP tool
- Flexible protection and control functionalities to meet specific user requirements
- Advanced HMI functionalities via a colour touch screen and a built-in web server, extended measurement, control and monitoring functions
- User-configurable LCD displays, able to show single line diagrams (SLD) with switchgear position indication and control, as well as measurement values and several types of controllable objects.
- Various protection setting groups available
- Enhanced circuit breaker monitoring and control
- High-capacity disturbance recorder (DRE) and event logging (data stored in non-volatile memory):
- DRE supporting up to 32 analogue signal channels and 64 digital signal channels.
- The event recorder can store more than 10,000 events.
- Several mounting methods: rack-mounted; flush-mounted; semi-flush-mounted; wall-mounted; wall-mounted with terminals; flush-mounted with IP54-rated cover.
- Wide range of communication protocols
- Ethernet communication: IEC 61850; IEC 60870-5-104; DNP3.0 TCP; Modbus TCP
- Serial communication: DNP3.0; IEC 60870-5-101/103; MODBUS, SPA
- The PROTECTA range can handle several communication protocols simultaneously.
- Built-in self-monitoring function to detect internal hardware or software errors.
- Various time sources available: NTP server; minute pulse; legacy protocol master; IRIG-B000 or IRIG-B12X
Applications
The ASZKG relays are designed to provide automatic synchronising of synchronous generators with the power grid. Synchronising can be performed at two different points; the choice between the two depends on the logic defined by the user.
These protection devices integrate a wide range of control and supervision functions allowing full control and the implementation of user-defined interlocking schemes for the primary switchgear of the substation.
Field of application
- “Synchrocheck” and “synchroswitch” functions with output signals for the control of the generator frequency and voltage
- Switchable target circuit breaker, delay detection for automatic selection
- User-configurable start/cancellation conditions
Protection and control functions
The ASZKG device measures one phase-to-phase voltage from the generator and from each busbar for synchronising purposes. Optionally, it can measure the three-phase voltages on each side for dead line detection (voltage supervision). Its main function is that of an automatic generator synchroniser, an enhanced version of the “synchrocheck-synchroswitch” function, thanks to outputs that send raise or lower commands for frequency and voltage to the generator.
Click on the link to download the general documentation : Please contact our Sales Department
Click on the link to download the operation manual : Please contact our Sales Department
Click on the link to access the technical documentation to attach to your order : DOCACOM_PROTECTA
