Analysis residual voltage of surge protection device(SPD) based on grounding and coordination

Badrul Azman, Muhamad Syafiq (2019) Analysis residual voltage of surge protection device(SPD) based on grounding and coordination. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project was about impact surge protection device (SPD) based on residual voltage. Nowadays, the global stand with modern technology so that many microprocessors were used in daily life. By using SPD, the overvoltage will limit the overvoltage and reduce from damage the circuit. This project done in the low-voltage system. Every coordination between SPD and grounding resistance has different value of residual voltage. The important characteristic was when residual voltage must be lower than the load voltage withstands. For this reason, the residual voltage was important to make sure the electrical appliance in a good condition. Next, study about value grounding also important to make sure the surge current will flow to the earth. For methodology, simulation SPD circuit modelling was used in PSCAD software. PSCAD was used to analyse the characteristic of SPD and study oscillation phenomena when using different length cable between SPD. For the case study coordination of SPD, difference value of the distance between SPD were determined to get a better residual voltage. For the study on case of grounding method, the suitable value of grounding will be selected to observe analysis result about level protection of SPD. Having this study method, the value of residual voltage (

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