| Summary: | Biogas is one of the renewable energy potentials in Indonesia. It is because
the raw materials needed to produce biogas in the form of manure and plants are
produced very much in Indonesia. However, the biogas itself is only used as a
substitute for Liquified Pressurized Gas (LPG) among Indonesian people, for the
power plant that utilizes this gas is still a small scale.
A large scale biogas power plant has been designed in Bantul, Yogyakarta.
Raw materials, such as cow manure from several districts in Bantul, are produced
as much as 725,000 kg/day. In previous research, the Process Flow Diagram (PFD)
of a biogas power plant and its production calculations has been carried out, where
the biogas produced from 725,000 kg is 18,270 m
3
/day . The biogas is used as fuel
in a gas turbine plant, which uses the principle of Brayton, to produce power for
963.42 kW/day.
An automated system is needed to maintain stability of plant output and
reliability of operation, this study is focused on automated system of the plant. This
automation system supports operators to measure, analyze data, and provide actions
in controlling the process so that it accurately matches a predetermined setpoint.
The automation system design consists of sensors, transmitters, and actuators are
summarized in Piping and Instrument Diagrams (P&ID) of the production,
purification, and power generation. In addition, in this paper, it is also designed a
Human Machine Interface (HMI), such as image display and management of data,
using Wonderware Intouch software. The display on the HMI is used to remotely
access and oversee the on-going process biogas power plant.
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