Risk avoidance method for electric power retailers to participate in balance market transactions

Abstract

The invention discloses a risk avoidance method for electric power retailers to participate in balance market transaction. The method comprises the following steps: S1, respectively acquiring time sequences of electric power retailers' market bidding electric quantity curves in the day-ahead and real-time market electric quantity purchasing curves, and calculating to obtain an unbalanced electricquantity residual error sequence; S2, measuring the discrete degree of the unbalanced electric quantity residual error sequence by using the information entropy, and establishing a risk avoidance degree index; S3, establishing a multi-target risk avoidance model with the maximum power retailer operation income, user demand response satisfaction and risk avoidance degree; and S4, taking the controllable load of the user side as a balance resource to participate in the market transaction, and carrying out optimization control on the balance resource through the multi-target risk avoidance modelto enable the power retailer to avoid the transaction risk. The method provided by the invention is simple in implementation process, and can effectively reduce the risk of the electric power retailerparticipating in the balance market transaction.

Description

technical field [0001] The invention relates to the field of electricity retail market transactions, in particular to a risk avoidance method for electricity retailers to participate in balanced market transactions. Background technique [0002] With the advancement of power system reform and the establishment of a wholesale-retail two-level market mechanism, the electricity sales side has gradually opened up, and many electricity retailers have been established and participated in the electricity sales business. Electricity retailers, like traditional electricity sales companies, need to purchase electricity in the day-ahead electricity wholesale market and sell it to terminal electricity users at retail electricity prices, so as to earn profits from the difference in electricity prices. However, in reality, due to the randomness and volatility of end user loads and distributed power output, power retailers cannot purchase power according to the results of winning bids in t...

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Problems solved by technology

[0003] However, in the current methods, the electricity consumption of users is usually increased or reduced by signing electricity contracts with end users. This method requires a lot of compensation costs and has low flexibility; or invest in the installation of electricity storage devices , use the characteristics of fast charging and discharging of power storage devices to participate in the stabilization of the unbalanced power between the power retailer and the real-time market, avoiding the trade of unbalanced power at a higher penalty price in the real-time market, and reducing the power retailer's imbalance Power purchase is risky, but the initial investment cost of installing power storage devices is huge, which is not conducive to the development of electricity retailers

Moreover, the existing methods do not accurately measure the risk of power retailers' unbalanced electricity caused by the uncertainty of new energy output and user load demand, and the measures to avoid risks do not consider end-user satisfaction and power retailers. Trading Risk Aversion

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