International Journal of Advanced Engineering Research and Science (IJAERS) ISSN: 2349-6495(P) | 2456-1908(O) Vol-8, Issue-2; Feb, 2021 Journal Home Page Available: https://ijaers.com/ Journal DOI: 10.22161/ijaers Article DOI: https://dx.doi.org/10.22161/ijaers.82.14 www.ijaers.com Page | 106 PID Controller Implementation For Temperature Control In Leakage Current Test Chamber 20kv Insulator Agung Nugroho, Trias Andromeda, Munawar Agus Riyadi Department of Electrical Engineering, Diponegoro University, Semarang, Indonesia Received: 30 Oct 2020; Received in revised form: 22 Jan 2021; Accepted: 04 Feb 2021; Available online: 13 Feb 2021 ©2021 The Author(s). Published by AI Publication. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/). Keywords— chamber, leakage current, temperature, insulator, PID controller Abstract— The Isolator is a device used in electric power systems which is very important to separate between conductor of the electric power systems transmission. Isolators are very influential on environmental conditions such as temperature, humidity and other pollutants. A suitable testing condition is needed to ensure the insulator will do properly. Therefore, it is necessary to test the insulator at a similaractual environment. This test is carried out using a chamber with temperature and humidity settings to determine the characteristics of the leakage current in the insulator. In this paper, a PID Controller is implemented to control the temperature in the chamber. The PID controller is applied in the Arduino R3 microcontroller using a DHT22 sensor and a thermoelectric cooling actuator (TEC12706.) Experimental results show that the PID controller can maintain the chamber temperature at the desired set point with Kp = 200, Ki = 10, Kd = 5. The system can reduce the temperature up to 23.6 °C with a rise time of 198 seconds with a peak time of 218 seconds at a temperature of 24.8 °C. The system can reach at a preset temperature value with a response time of 32 seconds. I. INTRODUCTION Electrical isolators are an important component in electricity to support the safety of electricity operations and implementations. Insulators must consider a specified standard in order to work properly.The insulators must be tested in such a way to determine their performance. One of method used to test the insulator is to determinethe leakage current using a chamber with temperature and humidity settings in order to get a suitable condition environment. Therefore a test room that is controlled with a precise controller is proposed. PID control is implemented in the test room where PID control is a popular feedback controller [1][2].This controller consists of three combined methods, namely proportional, integral, and derivative. The controller uses an Arduino Uno microcontroller with a DHT22 sensor and an actuator in the form of a TEC12706 Peltier. The DHT 22 sensor was chosen because it has high accuracy at-40 – 80 o C and humidity measurement of 0- 100% RH[3]. In previous research, an on-off control method was applied by Lastoni Wibowo[4].It wasdesigned to a 20 kV isolator leakage test room with temperature and humidity controls.The research work appliedan on-off control method applied in an Arduino Uno Rev.3.The control systems can manipulate the test room to resemble a certain environment conditions to getaccurate test results. In the paper, the temperature setting is carried out at three set points which are a maximum temperature at 33°C with a minimum humidity at 58%, an average temperature at 27°C with an average humidity at 82% and a minimum temperature at 21°C with a maximum humidity at 91%. The experimental results show that the maximum temperature setting with the minimum humidity, the highest temperature is 33.30°C and the lowest humidity is 58.25%. In the average temperature with an average humidity, the measurement results are close to the set point. In this condition, a temperature is 27.25°C with a humidity is 81.60%. In next experimental work, a minimum temperature with maximum humidity, the measurement results are the closest to the set point and the temperature is 25.35°C with humidity is 91.50%. A Proportional Integral (PI) controller that has been carried out by Bayu Rudianto [5] is used to adjust an automatic expansion valve control of an evaporator. In this