A predictive controller based on transient simulations for controlling a power plant

28th IAHR symposium on Hydraulic Machinery and Systems

Svingen, B.^1

Water Power Laboratory, NTNU, Norway Hymatek Controls AS, Norway^1

关键词: Governing system;    Governor control;    Method of characteristics;    Operational modes;    Predictive controller;    Special algorithms;    Transient simulation;    Turbine governors;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/49/5/052012/pdf
DOI  :  10.1088/1755-1315/49/5/052012

来源: IOP

【 摘 要 】

A predictive governor based on an embedded, online transient simulation was commissioned at Tonstad power plant in Norway in December 2014. This governor controls each individual turbine governor by feeding them modified setpoints. Tonstad power plant consists of 4 × 160 MW + 1 × 320 MW high head Francis turbines. With a yearly production of 3888 GWh, it is the largest in Norway. The plant is a typical high head Norwegian plant with very long tunnels and correspondingly active dynamic behaviour. This new governor system continuously simulates the entire plant, and appropriate actions are taken automatically by special algorithms. The simulations are based on the method of characteristics (MOC). The governing system has been in full operational mode since December 19 2014. The testing period also included special acceptance tests to be able to deliver FRR, both on the Nordic grid and on DC cable to Denmark. Although in full operational mode, this system is still a prototype under constant development. It shows a new way of using transient analysis that may become increasingly important in the future with added power from un-regulated sources such as wind, solar and bio.