Electrical power and grounding system study and improvement at TLS

The effect of the electrical power and grounding systems on the beam stability is studied at the Taiwan Light Source (TLS). Based on the study, some major improvements are accomplished at TLS. The electric power SCADA (Supervisory Control And Data Acquisition) system is established to remotely monitor and control the electrical power conditions. The soil resistivity data at TLS is collected and a new grounding system of low impedance (0.18 ohm) is constructed. Grounding signals and electric potential are collected at some grounding boxes. Grounding electric potential is observed effected by injection at some specific local grounding boxes. Grounding electric potential difference is also found between the new and old grounding systems. These two grounding systems will be connected as one and rearranged to cope with the grounding related problems.