Abstract
Frequency stability in electricity networks is essential to the maintenance of supply quality and security. This paper investigates whether a degree of built-in frequency stability could be provided by incorporating dynamic demand control into certain consumer appliances. Such devices would monitor system frequency (a universally available indicator of supply-demand imbalance) and switch the appliance on or off accordingly, striking a compromise between the needs of the appliance and the grid. A simplified computer model of a power grid was created incorporating aggregate generator inertia, governor action and load-frequency dependence plus refrigerators with dynamic demand controllers. Simulation modelling studies were carried out to investigate the system's response to a sudden loss of generation, and to fluctuating wind power. The studies indicated a significant delay in frequency-fall and a reduced dependence on rapidly deployable backup generation.
| Original language | English |
|---|---|
| Pages (from-to) | 1284-1293 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Power Systems |
| Volume | 22 |
| Issue number | 3 |
| Early online date | 30 Jul 2007 |
| DOIs | |
| Publication status | Published - 31 Aug 2007 |
Keywords
- electricity networks
- electricity supply
- consumer electricity supply
- electricity supply stability