Multi-class-unit-oriented power system medium-and-long-term electric quantity combined decomposition method

Abstract

The invention discloses a multi-class-unit-oriented power system medium-and-long-term electric quantity combined decomposition method. The method comprises the steps: carrying out differentiated medium-and-long-term electric quantity decomposition according to different operation characteristics of all units; establishing a target function and constraint conditions for medium-and-long-term electric quantity combined decomposition of multi-class generator units, and performing joint decomposition on the medium and long term electric quantity of each unit to each time point of the medium and long term to obtain the electric quantity decomposition power of each unit in each time period; carrying out processing to obtain must-run generation of each unit; and carrying out comparative judgment according to the must-run generation of each unit and electric quantity decomposition power of each unit at each period to adjust the output power of each unit, so that the stability of a power systemis improved. The method can give full play to the operation characteristics of the unit, does not need to circularly distribute the medium-and-long-term electric quantity in the maintenance period, discovers and stabilizes the risks of multiple types of units of a power generation side main body, and improves the stability of the power system.

Description

technical field [0001] The invention belongs to the electric power system field and relates to a power distribution optimization method for a generating set, and relates to a method for joint decomposition of mid- and long-term electric power in a power system for multi-category generating sets. Background technique [0002] Medium- and long-term electricity decomposition is one of the key links in the safe and stable operation of the power system. A fair and reasonable decomposition method needs to meet the operating constraints of generating units and ensure the load demand of the power system. Since the output characteristics of different types of generator sets are different, and the results of the mid- and long-term power decomposition of the units will be affected by the maintenance time, the decomposition method of the mid- and long-term power is faced with many problems such as the differential unit output characteristics, the unit maintenance time, and the rationalit...

AI Technical Summary

Problems solved by technology

Since the output characteristics of different types of generator sets are different, and the results of the mid- and long-term power decomposition of the units will be affected by the maintenance time, the decomposition method of the mid- and long-term power is faced with many problems such as the differential unit output characteristics, the unit maintenance time, and the rationality test of the decomposition results. Practical problems that need to be studied urgently

[0003] However, the existing power decomposition methods mainly focus on decomposing the medium and long-term power of a single type of unit, and do not consider sharing the load with different types of units; using the method of rolling correction to allocate the medium and long-term power during the maintenance period of the unit has high computational complexity; The rationality of the power decomposition results has not been checked. When transmission congestion occurs on some transmission lines of the power system, the decomposition results may not meet the load demand

The traditional mid-to-long-term power decomposition method for units can no longer meet the current situation that various types of generating units participate in the operation of the power system. There is an urgent need for a joint decomposition method for mid- and long-term power of multi-category generating units that considers the rationality test of the decomposition results.

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