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mapupu1207 发表于 2020-12-6 19:52 
那你只能说你不懂
10分钟平均电压过高会导致停机 而不是降低功率。
我们天天就处理这样的现象。
Grid overvoltages are annoying for everyone. Especially the end user who only sees their inverter not working.
This is a big issue in Australia, and can cause grief for installers.
It can also be difficult to explain to end users.
Under AS/NZS 3112, the standard Grid supply at the point of supply is 230 VAC, with a tolerance of -6% and +10%. This means the grid voltage should be somewhere between 216V and 253V.
Because inverters need to keep their voltage at about 2-3 volts above grid in order to push the energy out, it can happen that the inverter voltage may rise above the AS/NZS3112 standard if the grid is high enough.
We also need to include voltage rise along the AC inverter cable, which can be as high as 2%. At 253V, that equals 5 Volts. This can put the inverter at the 258 Volt limit, even if the grid is within standard, and the inverter will shut down until the voltage drops back below 253V.
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