2.不在专变考虑R或者X为0的情况 Signed-off-by: facat <facat@facat.cn>
2.推出了不考虑线路接地导纳的线路功率公式 Signed-off-by: facat <facat@facat.cn>
Signed-off-by: facat <facat@facat.cn>