Analisis Penggunaan Transformator Sisipan Untuk Mengatasi Rugi Tegangan dan Pembebanan Lebih

None Rachmat Sutjipto, None Heri Sungkowo, None Epiwardi, None Dhimas Dhesah Kharisma
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Abstract

On the JD267 distribution transformer with a capacity of 100 kVA at the Kalibaru feeder on the PT PLN (Persero) ULP Genteng experienced overloading at WBP (88.03%) and high voltage losses. The magnitude of the load exceeds 80% of the standard transformer capacity and is in the bad category (load >= 80%) according to Table I. SE No. 0017.E/DIR/2014, related to transformer loading percentage. Meanwhile, the voltage loss of the JD267 transformer when the WBP is in Phase R is 19.05%, Phase S is 17.08%, and Phase T is 18.33%. This exceeds the voltage tolerance limit in SPLN 1:1995 that the voltage is not allowed to exceed +5% and -10% of the PLN standard voltage, namely 220 V. To handle this problem, PT. PLN (Persero) ULP Genteng carried out the installation of insert transformers by estimating load growth in the next 5 years using the Least Square method. After the addition of the insert transformer, the loading on the JD267 distribution transformer fell to 58.93% on WBP. Meanwhile, the magnitude of the JD267 transformer voltage loss when the WBP after insertion in the R Phase decreases to 0.84%, the S Phase is 1.04%, and the T Phase is 1.63%, and when the LWBP after insertion in the R Phase decreases to 0 .76%, S Phase 0.30%, and T Phase 0.6%. Based on the data above, adding an insert transformer can improve the loading percentage on the transformer and reduce voltage losses that occur at the end voltage of the transformer.
利用插入式变压器克服电压损失和过载的分析
在PT PLN (Persero) ULP上Kalibaru馈线容量为100千伏安的JD267配电变压器上,geneng经历了WBP(88.03%)的过载和高压损失。根据表1 - SE No. 0017,负载的大小超过标准变压器容量的80%,属于不良类别(负载>= 80%)。E/DIR/2014,有关变压器负载百分比。同时,当WBP处于R相时,JD267变压器的电压损失为19.05%,S相为17.08%,T相为18.33%。这超过了SPLN:1995中的电压容差限制,即电压不允许超过PLN标准电压的+5%和-10%,即220v。为了解决这一问题,PT. PLN (Persero) ULP Genteng通过使用最小二乘法估计未来5年的负荷增长,进行了插入式变压器的安装。增加插入式变压器后,JD267型配电变压器的WBP负荷降至58.93%。同时,当插入R相后的WBP减小到0.84%、S相为1.04%、T相为1.63%时,插入R相后的LWBP减小到0.76%、S相为0.30%、T相为0.6%时,JD267变压器的电压损失幅度减小。根据以上数据,增加插入式变压器可以提高变压器的负载百分比,减少变压器端电压处的电压损耗。
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