Trading method and a system for abandoned wind and abandoned photovoltaic quantity

Abstract

The invention provides a trading method and a device for discarding wind and photovoltaic quantity. The trading platform forms a subscription discarding wind and discarding light trading curve with apreset trading interval and sends it to the electric power dispatching center. At the same time, the trading platform records the subscription price formed in the process of subscribing the objectivediscarding wind and photovoltaic quantity by the electric power user. The power dispatching center modifies the wind power and photovoltaic power generation plan and sends it to the new energy field station, controls the new energy field station to execute the modified wind power and photovoltaic power generation plan, and sends signals to the trading platform at the same time; When the trading platform receives the signal, the trading platform determines the actual total trading power quantity in the trading cycle and settles according to the subscription price, thereby avoiding the market price electricity quantity crowding out the guaranteed utilization hourly power quantity, avoiding the waste of new energy as far as possible, and ensuring the reasonable income of the new energy fieldstation. The invention takes into account the tie-line transmission capacity constraint condition, checks the new tie-line transaction plan according to the tie-line transmission capacity constraint condition, and is more operable in practice.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a trading method and system for abandoning wind and photovoltaic power. Background technique [0002] China's new energy installed capacity ranks first in the world, but affected by factors such as power supply structure, resource distribution and power grid structure, the problem of new energy consumption has become more prominent year by year. Wind power and solar power generation have the characteristics of randomness, volatility, and intermittency. The consumption of wind power and solar power generation is directly affected by the regulation ability of conventional power sources. The power structure in my country's "Three Norths" region is dominated by thermal power units, and the power peak regulation capacity is insufficient, so a large amount of wind and light have to be abandoned, and the problem of new energy consumption is very prominent. [0003] At pr...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortage of new energy waste and low reasonable income of new energy stations caused by the absence of trading methods for wind and photovoltaic power abandonment in the prior art, the present invention provides a trading method and system for wind power and photovoltaic power abandonment. According to the objective curtailment of wind and solar power subscribed by power users, the platform forms a subscription curtailment of wind and solar power with preset transaction intervals and sends them to the power dispatching center. Price; the power dispatching center revises the wind power and photovoltaic power generation plan and sends it to the new energy station according to the subscription curve of the abandoned wind and photovoltaic power generation plan, and controls the new energy station to execute the revised wind power and photovoltaic power generation plan, and sends a signal to the transaction at the same time platform; when the trading platform receives the signal, the trading platform determines the actual total transaction power in the trading cycle according to the objective curtailment of wind and photovoltaic power and settles it according to the subscription price; the objective curtailment of wind and photovoltaic power is based on the prediction results of wind power and photovoltaic ultra-short-term power Determine the difference with the power space used to accommodate wind power and photovoltaics, avoiding market price electricity crowding out guaranteed utilization hour electricity, avoiding waste of new energy as much as possible, and ensuring reasonable income for new energy stations

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