Design and Simulation of a Seven Taps Electronic on Load Tap Changer in 11/0.4KV Distribution Transformers Using a PI Controller

Alsuwaidi, Humaid; Adam, Ali Ahmed

doi:10.1109/icecta48151.2019.8959675

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…This is because the electronic tap changer has power electronic devices, which needs to control the pulsating process of the electronic switches. There are many studies dealing with the techniques of controlling the tap changer of the OLTC; all of which present methods of controlling to get the maximum benefits from the OLTC in the power systems [44], [45], [46], [47], [48], [49]. Fig.…”

Section: The Oltc Control Unitmentioning

confidence: 99%

A Review on Power System Voltage Stability with Limitation of an On Load Tap Changing Transformer

Alkahdely¹,

Alsammak²

2023

(AREJ)

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Voltage stability of power systems reflects challenges to the power system operators due to its effect on the power systems components performances. Therefore, many solutions were invented in order to keep the systems within the voltage stability accepted limits. Because of the huge expansion of the power grids and the different loads natures on the grids, many techniques and solutions are used. The On Load Tap Changing Transformer (OLTC) was one of those techniques. In this paper, a review of past works that deal with the voltage stability limits, voltage stability improvement ways, OLTC types, the OLTC reverse action, and OLTC effect on voltage stability, in addition to several ways that make the OLTC work better. are discussed. The paper also sheds the light on the possible ways that may be employed to prevent the OLTC reverse action.

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Section: The Oltc Control Unitmentioning

confidence: 99%

A Review on Power System Voltage Stability with Limitation of an On Load Tap Changing Transformer

Alkahdely¹,

Alsammak²

2023

(AREJ)

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“…Konsumsi energi listrik per individu di Indonesia telah mengalami kenaikan signifikan sebanyak 178,6 GWh dari tahun 2015 yang mencapai 909,91 GWh, dengan tingkat elektrifikasi sekitar 88,30%, menjadi 1.088,51 GWh pada tahun 2020, dengan tingkat elektrifikasi meningkat menjadi 99,20%. Untuk mengatasi pertumbuhan tersebut, diperlukan sistem distribusi energi listrik yang memenuhi standar kualitas dan terbebas dari gangguan seperti osilasi dan permasalahan serupa [1,2].…”

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Rancang Bangun Sistem Deteksi Binatang Penyebab Gangguan Distribusi SUTM Berbasis IoT

Rifai,

Sulistiyanti,

Yudamson

et al. 2024

ECT

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Distribusi listrik tegangan menengah di Indonesia didominasi oleh saluran tegangan menengah (SUTM). SUTM adalah konstruksi distribusi tenaga listrik non-isolasi dengan tegangan berkisar antara 5kV hingga 20kV menghubungkan gardu induk dengan pelanggan. SUTM sering mengalami gangguan sesaat hingga permanen akibat faktor binatang seperti kukang dan tupai. Penelitian ini berfungsi untuk merancang suatu sistem deteksi binatang berbasis IoT untuk mencegah dan memperingatkan dalam bentuk gambar jika terdapat binatang atau suhu berlebih di jaringan SUTM. Sistem deteksi ini menggunakan sensor PIR HC-SR501 untuk mengidentifikasi gerakan binatang, sensor DHT22 untuk deteksi suhu, buzzer ultrasonik untuk mencegah binatang, dan ESP32-CAM untuk mengambil gambar. Data yang diperoleh terkirim di Thingsboard menggunakan mikrokontroler ESP32, serta gambar terkirim pada aplikasi Telegram. Uji coba dilakukan secara subsistem dan keseluruhan dengan simulasi dan pengujian langsung di lapangan pada gardu hubung SUTM. Hasil pengujian menunjukkan bahwa sistem dapat mendeteksi pergerakan binatang dengan sudut deteksi hingga ∠63,4° dan sensor DHT22 dapat memantau suhu dengan nilai akurasi suhu 98,78%. Buzzer ultrasonik dapat mengusir binatang dengan frekuensi 35kHz. Delay pengambilan gambar ESP32-CAM ketika variabel terpenuhi bervariasi tergantung pada provider yang digunakan, dengan Telkomsel memiliki rata-rata delay terkecil sebesar 1,39 detik, provider Axis rata-rata delay sebesar 1,89 detik dan provider Tri memiliki rata-rata delay sebesar 2,34 detik

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“…− Decreasing the switching time: switching time is the duration that tap switches require to change their positions. It is important to reduce switching time as much as possible to improve OLTC performance [30]. Therefore, many recent studies [20], [31]- [35] have offered new control and switching techniques for reducing the switching time.…”

mentioning

confidence: 99%

Normal operation and reverse action of on-load tap changing transformer with its effect on voltage stability

Alkahdely

Alsammak²

2023

Bulletin EEI

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As electrical grids have expanded significantly, so too has the load on network buses. This, however, causes voltage drops to occur at the load side of the grid. A voltage drop causes a system to become unstable, increases its power loss, and reduces the amount of power that it transfers before finally leading to a collapse. An on-load tap changing (OLTC) transformer can be used to prevent the negative effects of an increased load by restoring the load voltage to its base value when sudden disturbances occur in the source. However, incorrect OLTC placement can cause the system to become unstable and cause collapse. This is referred to as the reverse action phenomenon of an OLTC. Therefore, this present study examined improving the ability of an OLTC to increase system stability and prevent collapse. A simple radial power distribution system was modelled in MATLAB. The results indicate that the proposed model can increase system stability and prevent collapse.

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Design and Simulation of a Seven Taps Electronic on Load Tap Changer in 11/0.4KV Distribution Transformers Using a PI Controller

Cited by 4 publications

References 12 publications

A Review on Power System Voltage Stability with Limitation of an On Load Tap Changing Transformer

A Review on Power System Voltage Stability with Limitation of an On Load Tap Changing Transformer

Rancang Bangun Sistem Deteksi Binatang Penyebab Gangguan Distribusi SUTM Berbasis IoT

Normal operation and reverse action of on-load tap changing transformer with its effect on voltage stability

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