Online Monitoring System for Pumped Hydro Storage Using RasPi Web Server

This paper presents the pumped hydro storage (PHS) monitoring system and control design. The monitoring and control technique developed uses Raspberry pi as a web server for the hydro pump operating system. The PHS monitoring system uses the ACS712 current and voltage sensor modules to read DC electrical parameters and PZEM sensors to read AC electricity. The ADS1115 component interfaces current and voltage sensor readings with Raspberry Pi (RasPi) digital inputs. Pumped hydro will operate to raise water from the lower reservoir to the upper reservoir when there is an excess of power from the solar generator to the load demand. Water from the upper reservoir will flow to the lower reservoir, which passes through the hydro-generator when the hydro-generator power is lower than the load demand. The on/off coordination of the hydro pump as well as hydro generation is carried out using a relay as a remote-controlled switch by the RasPi.