Analytical method of suppliers´ behaviors in electricity market

The suppliers´ bidding behaviors are one of the most significant factors which will impact on the market price. Some kinds of bidding behaviors, such as speculation and collusion, may reduce the performance and efficiency of electricity market. To identify the bad bidding behaviors and trace out their causation is very important for the operators of a healthy market. This paper firstly brings forward the main kinds of harmful bidding behaviors. Then systemically introduces the definition, signification and application of technical indexes using to analysis the suppliers´ behaviors, and an example is puts forward to illustrate how to identify the behavior of collusion with technical indexes. At last it summarizes the influence factors of harmful behaviors and makes suggestion on how to control and mitigate them. Examples and actual application for an electricity market in China are presented throughout the paper to illustrate the ideas.