Day-ahead plan making method and system considering gas turbine unit

Abstract

The invention discloses a day-ahead plan making method and system considering a gas turbine unit. The method comprises steps of obtaining a load prediction value of a power grid and prediction power of a new energy unit; substituting the load prediction value of the power grid and the prediction power of the new energy unit into a pre-constructed optimization model for calculation to obtain the output power of each unit; making a day-ahead plan of the power grid based on the output power of each unit; wherein the unit comprises a gas unit, a thermal power unit and a new energy unit. an optimization model being constructed on the basis of the load prediction value of the gas unit in multiple application modes, the power grid frequency modulation standby demand, the power grid accident standby demand and the prediction power of the new energy unit as constraints and with the minimum operation cost of each unit and the minimum electricity abandoning power of the new energy unit as the target. The method is advantaged in that a gas turbine unit participating in power grid dispatching is brought into full play, the regulation and control level and utilization efficiency of the gas turbine unit in multiple modes are improved, the wind power consumption level is improved, and safe and stable operation of a power grid is guaranteed.

Description

technical field [0001] The invention relates to automation technology, in particular to a method and system for formulating a day-ahead plan considering a gas unit. Background technique [0002] In recent years, because the use of wind power and photovoltaic power generation has the characteristics of energy saving and environmental protection, which is in line with the advocacy of using renewable resources for power generation, the installed capacity of wind turbines and photovoltaic units has increased rapidly, but wind power and photovoltaic power generation are very unstable and have strong intermittent. In addition, because of the uneven distribution of areas rich in renewable resources and concentrated load areas, the phenomenon of power curtailment is serious, and the same energy-saving and environmentally friendly gas-fired units have good response and frequency modulation characteristics, and can be applied to various modes such as frequency modulation and backup. ...

AI Technical Summary

Problems solved by technology

However, at present, the construction and operation costs of gas-fired units are relatively high. Therefore, it is necessary to study how to make trade-offs and optimize configurations among various application modes of gas-fired units, so that the value of gas-fired units in the power grid can be fully utilized. The construction and operation of the unit is of great significance

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