© The Institution of Engineering and Technology
Conventionally, the frequency of the power system is controlled by matching the electric supply to the varying demand. Some recent studies demonstrated that demand response (DR) can also contribute to the frequency control. However, most of the research works focus on the overall control strategy of DR, whereas the DR parameters are usually randomised rather than carefully designed. In this study, a hybrid hierarchical DR control scheme is designed to support frequency control. The parameters settings are discussed in detail. Instead of randomising the parameters for individual DR controllers, this study proposes a systematic way to design the parameters such as frequency threshold and minimum off-time for individual controllers, so that aggregation of DR can provide primary frequency control smoothly just like thermal generators. Furthermore, the control system is formulated as a multi-objective optimisation problem. The parameters such as the recovery rate of DR and the integral gain of secondary frequency control is optimised so that the maximum deviation, overshoot and oscillations of the frequency can be properly minimised. The proposed method is verified on numerical examples.
References
-
-
1)
-
14. Porter, B., Jones, A.H.: ‘Genetic tuning of digital PID controllers’, Electron. Lett., 1992, 28, (9), pp. 843–844 (doi: 10.1049/el:19920533).
-
2)
-
1. Bao, Y.-Q., Li, Y.: ‘FPGA-based design of grid friendly appliance controller’, IEEE Trans. Smart Grid, 2014, 5, (2), pp. 924–931 (doi: 10.1109/TSG.2013.2285178).
-
3)
-
22. Vasconcelos, J.A., Ramirez, J.A., Takahashi, R.H.C., Saldanha, R.R.: ‘Improvements in genetic algorithms’, IEEE Trans. Magn., 2001, 37, (5), pp. 3414–3417 (doi: 10.1109/20.952626).
-
4)
-
2. Xu, Z., Østergaard, J., Togeby, M.: ‘Demand as frequency controlled reserve’, IEEE Trans. Power Syst., 2011, 26, (3), pp. 1062–1071 (doi: 10.1109/TPWRS.2010.2080293).
-
5)
-
3. Samarakoon, K., Ekanayake, J.: ‘Demand side primary frequency response support through smart meter control’. Proc. 44th Int. Universities Power Engineering Conf., 2009, pp. 1–5.
-
6)
-
15. Biegel, B., Hansen, L.H., Andersen, P., Stoustrup, J.: ‘Primary control by on/off demand-side devices’, IEEE Trans. Smart Grid, 2013, 4, (4), pp. 2061–2071 (doi: 10.1109/TSG.2013.2257892).
-
7)
-
7. ‘The response of power systems to autonomous ‘grid friendly’ devices’. .
-
8)
-
12. Kundur, P.: ‘Power system stability and control’ (EPRI, Palo Alto, CA, USA, 1994).
-
9)
-
8. Pourmousavi, S.A., Nehrir, M.H.: ‘Real-time central demand response for primary frequency regulation in microgrids’, IEEE Trans. Smart Grid, 2012, 3, (4), pp. 1988–1996 (doi: 10.1109/TSG.2012.2201964).
-
10)
-
13. Holland, J.H.: ‘Adaptation in natural and artificial systems: an introductory analysis with applications to biology’ (University of Michigan Press, 1975).
-
11)
-
11. Pourmousavi, S.A., Nehrir, M.H.: ‘Introducing dynamic demand response in the LFC model’, IEEE Trans. Power Syst., 2014, 29, (4), pp. 1562–1572 (doi: 10.1109/TPWRS.2013.2296696).
-
12)
-
5. Molina-García, A., Bouffard, F., Kirschen, D.S.: ‘Decentralized demand-side contribution to primary frequency control’, IEEE Trans. Power Syst., 2011, 26, (1), pp. 411–419 (doi: 10.1109/TPWRS.2010.2048223).
-
13)
-
4. ‘Pacific northwest gridwise testbed demonstration projects, part II: grid friendly appliance project’. .
-
14)
-
6. Molina-García, A., Muñoz-Benavente, I., Hanse, A.D., et al: ‘Demand-side contribution to primary frequency control with wind farm auxiliary control’, IEEE Trans. Power Syst., 2014, 29, (5), pp. 2391–2399 (doi: 10.1109/TPWRS.2014.2300182).
-
15)
-
9. Chang-Chie, L.R., An, L.N., Lin, T.W., et al: ‘Incorporating demand response with spinning reserve to realize an adaptive frequency restoration plan for system contingencies’, IEEE Trans. Smart Grid, 2012, 3, (3), pp. 1145–1153 (doi: 10.1109/TSG.2012.2192297).
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