The SIPROTEC 7VE85 paralleling device is specifically designed for the synchronisation of generators (power plant units) with the power grid or synchronisation of two electricity-supply systems. Its main function is 1.5- and 2-channel synchronisation. 

 

To provide a high level of security and reliability, the software works with various monitoring functions. In addition, the most important hardware components are duplicated. Two different measuring algorithms are used in accordance with the multi-channel redundancy, which avoids overfunctions through systematic errors. At the same time, the different methods of measurement are applied and processed independently of each other with different memory areas. The high level of reliability and flexible options to adapt to the equipment requirements allow a wide variety of applications.

 

At a glance

• 1.5 and 2-channel synchronisation function
• Inputs and outputs
  • Predefined standard variants with up to 8 current transformers, 8 voltage transformers, 7 to 15 binary inputs, 14 to 20 binary outputs
• Flexibly adjustable and expandable I/O quantity structure within the scope of the modular SIPROTEC 5 system
• Available with large or small display, or without display
• Modes of operation
  • Switching synchronous/asynchronous electrical power systems
  • Switching to de-energised line or dead busbar
  • Synchrocheck function
  • Adjusting commands for voltage and frequency (speed)

 

Benefits

• Safe and reliable synchronisation of generators and electricity-supply systems by multichannel redundancy
• User-friendly design for easy handling of devices and software
• Cost savings as no external switchover of synchronisation and voltage measuring points is required
• Cybersecurity in accordance with NERC CIP and BDEW Whitepaper requirements
• Highest availability even under extreme environmental conditions by standard coating of the modules

 

Applications

• Synchronisation of generators (power plant units) with the electricity-supply system under consideration of the vector group of transformers and transformer tap
• Synchronisation of two electricity-supply systems
• Operation of up to 8 synchronising points without external switchover