Bachmann electronic is offering a PLC-integrated grid measurement and monitoring module for electrical three-phase networks, with a considerably greater range of functions than commonly available on the market. Fitting seamlessly in the tried and tested M1 automation/controller environment, the GMP232 of the latest generation offers additional calculation processes, high precision frequency measuring and enhanced protection functions. The solution efficiently combines plant control (operational control) and grid technology in a modular unit.
The new generation of Bachmann’s GMP232 grid measuring and monitoring module combines plant control and grid technology in a modular unit.
The GMP232 PLC-integrated modules were consistently designed to meet the requirements of decentralized gensets and for use at the grid connection point of energy farms. Interfaces are available for a direct 690-V connection, a secondary rated value at the transformer up to 120V, as well as for 1 and 5A current transformers.
The particular strength of the modules is the wide measuring ranges (up to 340% UN and up to 400% IN) combined with the high degree of accuracy of 0.1%. Frequency measuring is based on special algorithms which considerably improve resilience to grid faults and at the same time ensure a frequency accuracy of 1 MHz. Besides the enhanced calculation methods, the fundamental r.m.s. value and power procedures according to IEC61400-21 are also directly integrated into the module.
Grid and system protection can be implemented simply via the configurable monitoring functions, and the data can be routed to the operational control programs of the controller. Relay outputs enable the direct switching of two tripping circuits independently of the remaining PLC system.
The GMP232 can be used as a PLC-integrated solution, but it can also be used in combination with a small M1-CPU as an autonomous grid measuring product.
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