Abstract
A new mixed bidding mode for electricity market is proposed. In this mode, the load curve is divided into two parts including basic load part and fluctuating load part. The basic load part adopts the block bidding mode, and the fluctuating load part adopts the hourly bidding mode, so that not only a series of advantages of block bidding are preserved, but also the difficulties of dealing with constraints related to time periods of the block bidding are overcome. The optimization model of the mixed bidding mode is established to increase the feasibility of market clearing results. The boundary of block bidding market and hourly bidding market is determined by dynamic optimization adjustment according to system constraints, as well as minimizing the power purchasing cost. By comparing and analyzing the current two settlement methods, the unified marginal price clearing mechanism is adopted in the basic load part of the block bidding market for settlement, and the pay as bid mechanism is adopted in the hourly bidding market for settlement. An example of IEEE 30-bus system validates that the bidding mode and algorithm proposed are certainly feasible and practical.
| Original language | English |
|---|---|
| Pages (from-to) | 28-33 |
| Number of pages | 6 |
| Journal | Dianli Xitong Zidonghua/Automation of Electric Power Systems |
| Volume | 35 |
| Issue number | 7 |
| State | Published - 10 Apr 2011 |
Keywords
- Block bidding
- Electricity market
- Hourly bidding
- Mixed bidding
- Transmission constraints