A Novel Control Strategy for Subsynchronous Resonance Mitigation Using 11 kV VFD-Based Auxiliary Power Plant Loads
| Autor: | Diptargha Chakravorty, James Yu, Papiya Dattaray, Vladimir Terzija, Peter Wall |
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| Rok vydání: | 2018 |
| Předmět: |
Technology
Auxiliary power plant load SSSC Engineering SYSTEM OSCILLATIONS Power station 020209 energy Energy Engineering and Power Technology 02 engineering and technology Control theory Full state feedback induction motors 0202 electrical engineering electronic engineering information engineering Electronic engineering DAMPING CONTROLLER Torque Electrical and Electronic Engineering subsynchronous resonance series compensation Science & Technology damping Energy business.industry variable frequency drives 0906 Electrical And Electronic Engineering Engineering Electrical & Electronic SSR STATCOM Motor drive Variable-frequency drive Electricity generation Auxiliary power unit torsional interactions business Induction motor |
| Zdroj: | IEEE Transactions on Power Delivery. 33:728-740 |
| ISSN: | 1937-4208 0885-8977 |
| Popis: | This paper proposes a novel damping controller for subsynchronous resonance (SSR) mitigation using existing 11-kV variable frequency drive interfaced auxiliary power plant loads. The input of the proposed auxiliary damping controller is the turbine output power $(P_{t})$ . This is a standard signal that is monitored in power plant control rooms and is available locally without the need for additional measurement and/or communication infrastructure. The auxiliary damping controller (ADC) adds an auxiliary speed signal to the existing speed reference in the closed-loop motor drive control in response to any torsional range oscillations seen in $P_{t}$ , via a feedback compensator. The ADC extracts damping by exploiting SSR load interactions and is tuned using a residue-based pole placement technique. The ADC performance is evaluated for both torsional interaction and torque amplification types of SSR in the IEEE First Benchmark and IEEE 68-bus networks. The results show that the ADC is effective in providing positive damping to mitigate unstable SSR oscillations under a range of operating conditions. The proposed solution is a simple yet effective means of providing local control of SSR with minimal additional cost. |
| Databáze: | OpenAIRE |
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