CPC H02J 13/00002 (2020.01) [G05B 19/042 (2013.01); H02J 13/00001 (2020.01); G05B 2219/2639 (2013.01)] | 7 Claims |
1. A system for determining a low-voltage interface of an intelligent electronic device (IED) of a power system, wherein the low-voltage interface includes one or more of locations of pinouts of the IED, voltage levels of the pinouts, functions of the pinouts, or current and/or voltage scaling factors, the system comprising:
an interface module including
a plurality of connectors configured to be electrically connected in one-to-one correspondence to the pinouts of the IED, and
one or more switches configured to
provide power to one or more pinouts of the plurality of pinouts of the IED, when a voltage signal from a power source is electrically coupled to the interface module, to selectively provide a sinusoidal signal or a pulse signal to one or more connectors of the plurality of connectors, and
select testing modes;
a sensor system operable to identify one or more pinout voltage levels of the IED when the voltage signal from the power source is electrically coupled to the interface module; and
a controller communicatively coupled with the interface module, the power source, and a supervisory control and data acquisition (SCADA) module operating in conjunction with the IED, wherein the controller is configured to
obtain, from the SCADA module, signals induced in the IED in response to predetermined voltage inputs by the power source to the IED through a first set of the connectors,
determine functionality of input pinouts of the IED corresponding to the first set of connectors based on the obtained signals,
obtain, from the SCADA module, measurements of currents through, and voltages across, the IED corresponding to a sequence of voltages of different amplitudes that is input by the power source to the IED through a first set of the connectors, and
calculate current- or voltage-scaling factors for the input pinouts based on the obtained measurements.
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