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发表于 2019-5-5 09:01
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来自： 中国北京
我不确定你说的并网是不是指整个电网。
每个船级社海船规范里面都有，参见ABS：
The total harmonic distortion (THD) in the voltage waveform in the distribution systems is not to exceed 8% and any single order harmonics not to exceed 5%. Other higher values may be accepted provided the distribution equipment and consumers are designed to operate at the higher limits. This relaxation on THD limits is to be documented (harmonic distortion calculation report) and made available on board as a reference for the Surveyor at each periodical survey. Where higher values of harmonic distortion are expected, any other possible effects, such as additional heat losses in machines, network resonances, errors in control and monitoring systems are to be considered. See also 4-8-2/9.22 and 4-8-2/9.23. |
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