The electrical power grid is particularly vulnerable to these extra currents, which can infiltrate high-voltage transmission lines, causing transformers to overheat and possibly burn out.

相对于这些电流而言，电网极其脆弱。 这些电流混入高压传输线引起变压器过热且可能烧毁。

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That is the reason why the current emphasis in China is on the construction of 500kv extra-high-voltage lines and long-distance power transmission.

FORBES: Cracking China's Power Sector