Energy-saving power generation dispatching method

Abstract

The invention belongs to the field of power system dispatching automation, and particularly provides an energy-saving power generation dispatching method. The method comprises the steps of: pre-defining real-time load rates of units; calculating coal consumption difference per-unit values of the units; establishing the mathematical relation among load rates, coal consumptions and discharge standards of the units according to the coal consumption difference per-unit values of the units; calculating to obtain the load rates and loads of the units according to the real-time load rates of the units and the established mathematical relation; and performing energy-saving power generation dispatching according to the load rates and the loads of the units. The technical proposal provided by the invention breaks the prior fixed thinking of 'a top table method', originates the thought and the method of linking designed coal consumption values and actual power generation equivalent load rates ofthe units together, constructs a related mathematic model, breaks the technical bottleneck of the field of energy-saving power generation dispatching, scientifically solves the important problem of implementing an energy-saving power generation dispatching principle into the actual establishment of power generation plans, and has important significance in the concrete implementation of energy-saving power generation dispatching.

Description

technical field [0001] The invention belongs to the field of power system scheduling automation, and specifically proposes an energy-saving power generation scheduling method. Background technique [0002] Energy-saving power generation scheduling with coal consumption and emissions as the core content is one of the important tasks in my country's electric power industry at present and in the future. After the State Council issued the "Measures for Energy-Saving Power Generation Scheduling", the pilot provinces issued implementation rules. The core content is to ensure the safe and stable operation of the power grid and the continuous and reliable supply of electricity. Production, conventional coal-fired units, and oil-fired units are sorted in order. For conventional coal-fired units, a corresponding sequence table is formulated according to the level of coal consumption and emissions. [0003] As conventional thermal power accounts for a large proportion in my country, e...

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Problems solved by technology

[0004] 1) The coal consumption of the power plant has a great relationship with the performance of the unit, the load level, and the design coal type. There is a big difference between the design coal consumption and the actual coal consumption. Due to the technical difficulties in the measurement of the online coal consumption, the "top table method" is adopted. It is unfair to compile the daily power generation plan curve for energy-saving power generation scheduling, because the actual coal consumption of units with little difference in design coal consumption may be very different

[0005] 2) From an operational point of view, using the "top table method" to compile the daily power generation plan curve for energy-saving power generation scheduling is poor in operability

Because the unit with low coal consumption has a strong peak-shaving capability, the rate of adding / decreasing load is fast, and the load is basically full before the load rises rapidly (such as when the load rises in the morning and noon), and other units cannot meet the system load during this period. Rapidly rising demands, resulting in degraded power quality

[0006] Therefore, the energy-saving power generation scheduling in the prior art is to use the "top-table method" to compile the daily power generation planning curve, which has a big disadvantage

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