漁船電力系統暴露之磁場與諧波分析

ANALYSIS OF MAGNETIC FIELDS AND HARMONICS GENERATED FROM POWER SYSTEMS ON FISHING VESSELS

因船舶電力系統中，非線性負載多且變動率大，其系統穩定度與電力品質相較於陸上系統要求更為嚴苛。其中，又以諧波問題較為嚴重，而諧波會造成船舶電氣設備的誤動作與降低設備的使用壽命，甚至有擊穿設備絕緣的可能。因此，如何有效抑制系統諧波以提升船舶用電品質，進而節省能源是現代化漁船須探討之問題；此外，漁船大量使用電氣與電子設備，因而造成磁場環境十分複雜，根據文獻研究發現，電磁輻射可能對人員及設備等造成潛在危害。所以，本文以分析電磁輻射危害防護標準的基礎，利用模擬與實地量測比較，藉以剖析漁船電磁場環境，希望漁船於用電上更穩定、經濟與安全。 Fishing vessels normally have installed many nonlinear loads with high variations that may cause a harmonicproblem and their power systems requires high electrical safety and stability which are slightly different from thepower system used in lands. Harmonics may cause malfunction on equipment or decrease life duration of equipment,even possibly damage the insulation. One of the problems needed to investigate on a modernized fishing vessel is howto effectively save energy. In addition, the electrical environment of a fishing vessel is complex because there aremany electrical facilities and electronic devices used on boards. Research has shown electromagnetic radiation may have a potential effect to harm human health and decrease life duration of equipment. As a result, this paper willcompare computer simulations and in-situ measurements of magnetic fields and harmonics generated from powersystems on fishing vessels based on the standard of non-ionizing radiation protection in order to investigate theelectromagnetic environment of fishing vessels.