A Coordinated Control Method for Two-Level Scheduling Sections in Land Saving

Abstract

The invention discloses a provincial and local two-level scheduling section coordination and control method which is characterized in that maximum electricity generation power new energy of a local dispatching center is calculated via the local dispatching center based on section limit value issued by a provincial dispatching center and limit value of transmitting power of neighboring local dispatching centers; utilization conditions of limit value of transmitting power of neighboring zones are monitored in real time; if the limit value is not fully used, underused conveying capacity of the neighboring zones is additionally issued and used via control over a new energy filed station; if the conveying capacity of the neighboring zones surpasses the limit value of transmission, control operation is performed based on original section limit value, statistics are run on over-issued limit value, and provincial dispatching centers are assisted in relevant performance examination indicator calculation. The beneficial effects of the method are that new energy electricity generation space of each local dispatching center is calculated at a provincial dispatching side in a unified manner, the electricity generation space is corrected after a section operation state is monitored in real time at a local dispatching side, power transmission capacity of the power transmission section can be fully used while safety of a power transmission section of a power grid is ensured, and maximum new energy can be absorbed.

Description

technical field [0001] The invention relates to a coordinated control method for two-level dispatching sections in a land-saving manner, and belongs to the technical field of active power control of electric power systems. Background technique [0002] Wind power is currently the most mature technology and the best economic benefit of renewable energy power generation except hydropower. With the start of construction of several 10-million-kilowatt-scale wind power bases in China, it is gradually becoming more difficult for the power grid to fully absorb wind power under the premise of ensuring safe and stable operation and active power control performance. high demands. [0003] After large-scale wind power is connected to the grid, the ramp-up and down-slope rate of wind power is too fast, and the "anti-peak regulation" and intermittent characteristics greatly increase the power grid's demand for conventional energy regulation reserve capacity, improve the performance requ...

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Problems solved by technology

[0014] Document 5 analyzes reducing the adverse impact of wind power intermittency on the grid after large-scale wind power access from the perspective of reserved adjustment capacity of wind farms, but requiring wind farms to reserve a part of adjustment capacity based on ultra-short-term load forecast results is contrary to the current new energy The basic requirements for the consumption of wind power resources as much as possible in the development policy

[0015] To sum up, as some commonly used technical means in the existing technology, in general, after the current large-scale grid-connected operation of wind power, the operability and actual effect of the provincial dispatching of new energy stations to the local dispatching and control It is not very satisfactory, there are some technical problems

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