Eaton's CYME Network Disturbance Assessment D-A-CH-CZ module allows for 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’s customers in several ways ranging from personal discomfort to safety, equipment malfunction, damage and/or overheat, 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 an 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 analyzed, whether its operation is recommended or not, based on the outcome of the verifications performed. An intuitive color-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 verifications 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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