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tdcosim / TDcoSim

T&D co-simulation package
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Feature request: Update voltage ridethrough settings to closely align with IEEE 1547-2018 #19

Closed sibyjackgrove closed 4 years ago

sibyjackgrove commented 4 years ago

Is your feature request related to a problem? Please describe. The voltage ride-through settings presently available in the module are a cause of ambiguity even though they possess all functions as per IEEE 1547-2018. It can be updated to closely align with the 1547-2018 settings as given in Tables 14, 15, and 16.

Describe the solution you'd like An example of how the settings may be refactored.

"DERParameters":{
                        "pvderScale": 1,
                        "LVRT":[{0:{"V_threshold":0.5,"t_threshold":1.0,"mode":"momentary_cessation"},
                                         1:{"V_threshold":0.7,"t_threshold ":10.0,"mode":"mandatory_operation"},
                                         2:{"V_ threshold ":0.88,"t_threshhold ":20.0,"mode":"mandatory_operation"}
                                }],
                        "HVRT":[{0:{"V_threshold ":1.2,"t_threshold ":0.16,"mode":" momentary_cessation"},
                                       1:{"V_threshold ":1.1,"t_threshold ":12.0,"mode":"momentary_cessation"}
                                }], 
                        "OUTPUT_RESTORE_DELAY": 0.5,
                        "power_rating":50,
                        "SteadyState":true
                    }

In this new format we will have 2 modes: momentary_cessation: Power output reduced to zero temporarily mandatory_operation: Try to maintain rated power output

In all the modes, once the t_threshold times are breached, the DER is tripped (i.e. power output reduced to zero permanently). The config will be expected to work with any number of elements (>0) in the “LVRT” and “HVRT” dictionaries.