高壓發(fā)電機(jī)組和低壓發(fā)電機(jī)組有哪些區(qū)別?
老化延緩。低壓電流是高壓電流的26.25倍,低壓發(fā)電機(jī)組熱負(fù)荷損耗大,高壓反之。
Delayed aging. Low voltage current is 26.25 times higher than high voltage current. Low voltage generator sets have high thermal load losses, while high voltage generators have the opposite effect.
抗諧波能力高。低壓發(fā)電機(jī)設(shè)計結(jié)構(gòu)工藝簡單,所以抗諧波能力相對較低。
High harmonic resistance. The design structure and process of low-voltage generators are simple, so their ability to resist harmonics is relatively low.
非同期短路風(fēng)險系數(shù)低。多臺低壓發(fā)電機(jī)非并機(jī)供電時,由于各供電系統(tǒng)不同步,存在非同期短路風(fēng)險,高壓反之。
The risk coefficient of non synchronous short circuit is low. When multiple low-voltage generators are not connected for power supply, there is a risk of asynchronous short circuit due to the asynchronous power supply systems, while the opposite is true for high-voltage.
安全性高。低壓機(jī)組的輸出斷路器由于電流過大,滅弧不如高壓,經(jīng)常出現(xiàn)因拉弧損壞。
High security. The output circuit breaker of low-voltage units is not as good as high-voltage due to excessive current, and often suffers from damage due to arc pulling.
供電集中。低壓發(fā)電機(jī)因電纜使用多,熱損耗大很難實(shí)現(xiàn)遠(yuǎn)距離送電。高壓機(jī)組電流小,可實(shí)現(xiàn)遠(yuǎn)距離送電。
Centralized power supply. Low voltage generators are difficult to achieve long-distance power transmission due to the frequent use of cables and high heat loss. The high-voltage unit has a small current and can achieve long-distance power transmission.
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