Eaton's CYME Network Disturbance Assessment D-A-CH-CZ module allows the quick determination of the acceptability of a new load or generator interconnection by evaluating its impact on a series of power quality criteria.
On top of the interconnection of non-linear loads to the grid, the broadening of the distributed generation panorama and power electronics applications has increased the probability, frequency and severity of power quality issues such as over and under-voltages, harmonic distortion, flicker and voltage unbalance on the power system.
Since these events can affect utility customers in several ways, ranging from personal discomfort to compromised safety, equipment malfunction, damage and/or overheating, processes disruption and data loss, an adequate evaluation of the impact of an installation prior to its interconnection to the power system is necessary.
In accordance with the standard D-A-CH-CZ – Technical Rules for the Assessment of Network Disturbances, Eaton's CYME Network Disturbance Assessment D-A-CH-CZ module quantifies and evaluates various voltage quality perturbations introduced by a piece of equipment through a series of tests.
The module uses CYME software robust load flow and short-circuit simulations to evaluate voltage variations and rise, flicker levels and harmonic distortion to help in determining if the interconnection of a load or generator is acceptable or not, according to a series of adjustable limits.
The module produces a simple report, indicating, for the installation analysed, whether its operation is recommended or not, based on the outcome of the tests performed. An intuitive colour-coding function of the pass or fail status of each test draws attention to unacceptable situations.
The assessment, performed according to the standard D-A-CH-CZ – Technical Rules for the Assessment of Network Disturbances, can be done for new or existing installations.
The following loads and DER types are supported:
The module executes the following tests to determine if the installation has a negative impact on the power quality of the system. Different acceptability limits can be defined for low-voltage and medium-voltage systems.
Eaton’s CYME network disturbance assessment D-A-CH-CZ module quickly determines the acceptability of a new load or generator interconnection by evaluating its impact on a series of power quality criteria.
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