发明名称 |
COORDINATION CONTROL METHOD OF MULTI-TERMINAL FLEXIBLE DIRECT CURRENT POWER TRANSMISSION SYSTEM |
摘要 |
A coordination control method of a multi-terminal flexible direct current power transmission system. If a direct-current voltage master control station shuts down, a direct-current voltage control slave station takes over direct-current voltage control, and remaining convertor stations keep original control modes. The takeover steps comprise that under the condition that inter-station communications are effective, the master control station sends a shutdown message to the slave station through the inter-station communications, and when the slave station monitors that the direct-current voltage master control station shuts down, the slave station switches a current control mode into a direct-current voltage control mode; and under the condition that inter-station communications fail or inter-station communications are absent, the slave station monitors changes of the direct-current voltage of a system, and when the difference value of a direct-current voltage value and a rated value exceeds a definite threshold value, the slave station switches a current control mode into a direct-current voltage control mode. By means of the method, the direct-current voltage can be effectively controlled, and when the direct-current voltage master control station shuts down due to a fault, the direct-current voltage control slave station can take over the control so that oscillation of the system direct-current voltage is reduced. |
申请公布号 |
WO2014071742(A1) |
申请公布日期 |
2014.05.15 |
申请号 |
WO2013CN78558 |
申请日期 |
2013.07.01 |
申请人 |
NR ELECTRIC CO., LTD;NR ENGINEERING CO., LTD |
发明人 |
DONG, YUNLONG;TIAN, JIE;LI, GANG;CAO, DONGMING;LI, HAIYING;LIU, HAIBIN |
分类号 |
H02J3/36 |
主分类号 |
H02J3/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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