HYSYS dynamic simulation of compressed air energy storage – AC mode
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I created a simple dynamic model of the inflation process for compressed air energy storage; experts, please avoid criticizing it. First half of the energy storage process: Compressors K-100, K-101, and K-102 operate to fill gas tank V-100; compressor K-103 does not operate. Valves VLV-104 and VLV-109 are closed, while valve VLV-110 is open. Second half of the energy storage process: The first three compressors continue to operate, compressor K-103 is started, while valve VLV-110 is closed, and valves VLV-104 and VLV-109 are opened. The controls involved include: controlling the vanes opening of the variable-vane compressor K-101 to maintain a stable inlet air flow, controlling the speed of the variable-frequency speed-regulated compressor K-103 to maintain a stable inlet air flow, and maintaining the outlet temperature on the water side of the heat exchanger through cascade control of the cooling water volume. What needs to be done now is to add some logical control strategies on top of this model. For example, the startup of compressor K-103 during inflation, as well as the opening and closing of valves, are currently performed manually; now it is desired to automate these operations using a logic control module. However, after searching for information, going through textbooks, and watching videos created by foreigners on YouTube, I found that there is relatively little material on this topic. I was wondering if there are any experts who are familiar with HYSYS’s logic control features and could offer some guidance. I would like to express my gratitude here.
By adding logical control strategies to HYSYS, you can use the control modules in HYSYS’s Dynamic mode to establish automated logical control. For example, a Logic Controller can be used to set the compressor K-103 to start automatically when certain conditions are met during the energy storage process, or to automatically adjust the opening and closing state of valves based on changes in parameters such as pressure and flow rate. First, make sure your model is switched to dynamic simulation mode, then find Logic & Control in HYSYS’ Utilities, and use the various control components there to build your control logic. Automated control can be achieved by setting different control variables and conditions. If you are not familiar with how to operate it, you can consult HYSYS’ help documents or official tutorials, which contain more detailed guidance. .
Thank you. I have found that the start and stop of the compressor can be achieved at present. There is another question I would like to ask: in the first half of the inflation process, the air intake flow rate is controlled by adjusting the vanes of compressor K-101 using FIC-100; whereas in the second half of the inflation process, the air intake flow rate is controlled by adjusting the speed of compressor K-103 using FIC-108. These two controllers do not operate simultaneously; can the logic control module be used to control the timing of when these controllers are turned on and off? Thank you.
Hello, could you provide some examples? I have been learning * recently and have encountered the same problem
I’m borrowing this thread to ask: How can Aspen Plus be set up to display individual stream and module parameters in a flow diagram like the one shown by the original poster? Thank you