IEEE Std 1547a:2020 pdf download.IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces-Amendment 1: To Provide More Flexibility for Adoption of Abnormal Operating Performance Category III.
6. Response to Area EPS abnormal conditions
6.4 Voltage
6.4.1 Mandatory voltage tripping requirements
Change Table 13 as follows:
a The Area EPS operator may specify other voltage and clearing rime trip settings within the range of allowable Settings, e.g.. to consider
Area EPS protection coordination.
b Nominal system voltages stated in ANSI C84. 1, Table 1 or as otherwise defined by the Area EPS operator. The ranges of allowable settings do not mandate a requirement for the DER to ride through this magnitude and duration of abnormal voltage condition. The Area EPS operator may specify the voltage thresholds and maximum clearing times within the ranges of allowable settings; settings outside of these ranges shall only be allowed as necessary for DER equipment protection and shall not conflict with (he voltage disturbance ride-through requirements specified in 6.4.2. For the overvoltage (OV) and undervoltage (UV) trip functions clearing thne ranges and for the OV trip functions voltage ranges, the lower value is a limiting requirement (the setting shall not be set to lower values) and the upper value is a minimum requirement (the setting may be set above this value). For the UV trip functions voltage ranges, the upper value is a limiting requirement (the setting shall not be set to greater values) and the lower value is a minimum requirement (the setting may be set to lower values).IEEE Std 1547a pdf download.