Secondary Frequency Control With On-Off Load Side Participation in Power Networks
| Autor: | Andreas Kasis, Nima Monshizadeh, Ioannis Lestas |
|---|---|
| Přispěvatelé: | Smart Manufacturing Systems, Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
decentralized control
0209 industrial biotechnology Control and Optimization Computer Networks and Communications Computer science 020209 energy Automatic frequency control Control (management) Passivity power system control Systems and Control (eess.SY) 02 engineering and technology Electrical Engineering and Systems Science - Systems and Control Stability (probability) Electric power system AUTOMATIC-GENERATION CONTROL 020901 industrial engineering & automation Control theory FOS: Mathematics FOS: Electrical engineering electronic engineering information engineering 0202 electrical engineering electronic engineering information engineering demand-side management Mathematics - Optimization and Control STABILITY Smart grids hybrid systems Power (physics) Time–frequency analysis Optimization and Control (math.OC) Control and Systems Engineering Signal Processing control of networks Numerical stability |
| Zdroj: | IEEE Transactions on Control of Network Systems, 7(2):8792949, 603-613. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE Transactions on Control of Network Systems |
| ISSN: | 2325-5870 |
| Popis: | We study the problem of decentralized secondary frequency regulation in power networks where ancillary services are provided via on-off load-side participation. We initially consider on-off loads that switch when prescribed frequency thresholds are exceeded, together with a large class of passive continuous dynamics for generation and demand. The considered on-off loads are able to assist existing secondary frequency control mechanisms and return to their nominal operation when the power system is restored to its normal operation, a highly desirable feature that minimizes users' disruption. We show that system stability is not compromised despite the switching nature of the loads. However, such control policies are prone to chattering, which limits the practicality of these schemes. As a remedy to this problem, we propose a hysteretic on-off policy where loads switch on and off at different frequency thresholds and show that stability guarantees are retained when the same decentralized passivity conditions for continuous generation and demand hold. Several relevant examples are discussed to demonstrate the applicability of the proposed results. Furthermore, we verify our analytic results by using numerical investigations on the Northeast Power Coordinating Council (NPCC) 140-bus system. |
| Databáze: | OpenAIRE |
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