【摘要】：針對(duì)仍普遍存在的超、特高壓電磁環(huán)網(wǎng),結(jié)合省級(jí)電網(wǎng)的實(shí)例總結(jié)了電磁環(huán)網(wǎng)的不同發(fā)展形態(tài)和結(jié)構(gòu),認(rèn)為電磁環(huán)網(wǎng)的主要風(fēng)險(xiǎn)在于潮流轉(zhuǎn)移和控制,并提出了衡量電磁環(huán)網(wǎng)強(qiáng)弱和風(fēng)險(xiǎn)的耦合度指標(biāo)。在網(wǎng)絡(luò)結(jié)構(gòu)優(yōu)化和加強(qiáng)方面,認(rèn)為強(qiáng)耦合的弱電磁環(huán)應(yīng)優(yōu)先加強(qiáng)上級(jí)電網(wǎng),弱耦合的強(qiáng)電磁環(huán)應(yīng)優(yōu)先考慮短路控制和簡(jiǎn)化結(jié)構(gòu),多級(jí)電磁環(huán)應(yīng)盡快解耦等,分析了電磁環(huán)網(wǎng)的典型分片方案。鑒于超、特高壓電磁環(huán)網(wǎng)將長(zhǎng)期存在,闡述了電磁環(huán)網(wǎng)單一和連鎖跳閘后實(shí)用化的潮流轉(zhuǎn)移控制方法,特別是針對(duì)大功率、強(qiáng)耦合型電磁環(huán)網(wǎng)提出了一種嚴(yán)重故障后快速切除聯(lián)絡(luò)元件的非常規(guī)穩(wěn)定控制措施,以實(shí)現(xiàn)解耦控制、均衡潮流,有效提升過(guò)渡期電網(wǎng)的穩(wěn)定水平和輸電能力。在實(shí)際電網(wǎng)中的多個(gè)應(yīng)用實(shí)例表明其效果良好。
[Abstract]:In view of the existing ultra-high voltage electromagnetic loop network, combined with the examples of provincial power grid, the paper summarizes the different development forms and structures of the electromagnetic loop network, and considers that the main risk of electromagnetic loop network lies in the power flow transfer and control. The coupling index to measure the strength and risk of electromagnetic loop network is proposed. In the aspect of network structure optimization and strengthening, it is considered that the strong coupling weak current magnetic ring should give priority to strengthening the superior power network, the weak coupling strong electric magnetic ring should give priority to short circuit control and the simplified structure, and the multistage electromagnetic ring should be decoupled as soon as possible. The typical slice scheme of electromagnetic ring network is analyzed. In view of the ultra-high voltage electromagnetic loop network will exist for a long time, this paper expounds the practical power flow transfer control method after the single and interlocking tripping of the electromagnetic loop network, especially for the high power. In order to realize decoupling control, equalize power flow, and effectively enhance the stability level and transmission capacity of transitional power network, a new unconventional stability control measure is proposed for the strong coupling electromagnetic loop network. A number of examples in practical power grid show that the effect is good.
【作者單位】： 國(guó)網(wǎng)湖北省電力公司;中南電力設(shè)計(jì)院;

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