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发表于 2019-8-4 11:11
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来自： 中国香港
经验主义害死人。
SOLAS公约第II-1章第3.7定义的“主电源”系指向主配电板供电以给保持船舶正常操作和居住条件所必需的所有设施配电的电源。
常见的柴油发电机组，推进主机驱动的发电机都可能构成主电源，甚至气体燃料发动机驱动，内燃机或外燃机，亦或燃料电池。轴发在港并网设计比较常见，带侧推的液货船上这种布置很普遍。
另外不同容量的发电机可以并网，只要电压、频率和相序一致即可，公约或规范上并没有反对。甚至可以从规范表述中找到支持，例如BV规范第C篇第1章第2节：
“For alternating current generating sets operating in parallel, the governing characteristics of the prime movers are to be such that, within the limits of 20% and 100% total load, the load on any generating set will not normally differ from its proportionate share of the total load by more than 15% of the rated power in kW of the largest machine or 25% of the rated power in kW of the individual machine in question, whichever is the lesser. 注意此处largest，言下之意，并联的发电机容量可以不一致。
要不要突加突卸，正是规范中对辅机调速器的要求。当然在规范中会说明轴发是不是主电源，如果是，那么需要满足主电源原动机的要求。
“Generators driven by the propulsion plant (shaft generators) which are intended to operate at constant speed (e.g. a system where vessel speed and direction are controlled by varying propeller pitch) may be accepted as forming part of the main source of electrical power if, in all sailing and manoeuvring conditions including the propeller being stopped, the capacity of these generators is sufficient to provide the electrical power to comply with [2.2.3] and all further requirements, especially those of [2.2.6]. They are to be not less effective and reliable than the independent generating sets”
所以，判定轴发是不是主电源是有条件的，轴发要不要做突加突卸，与是不是构成主电源关系很大！ |
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楼主: bareboat
楼主
）。
