A dispatching method of a combined heat and power system for improving wind power consumption by comprehensive heat supply of buildings

Abstract

The invention relates to a dispatching method of a combined heat and power system for improving wind power consumption by comprehensive heat supply of buildings, which comprises the following steps ofpredicting wind power increment in a next time period; if the power increment of wind power is positive, decreasing the output of thermoelectric generating units in order; if the output of the thermoelectric generating units can be reduced, reducing the output of the thermal power and the electric power of the co-generating units in sequence; if the wind power increment is negative, increasing the thermal power and electric power output of the cogeneration unit in sequence; if there is no co-generation unit output can be increased, increasing the output of the sub-generation unit sequentially; calculating the heating electric power and heating thermal power of each building in the next period, and the power distribution of the whole electric heating combined system; checking for power overruns. The technical scheme of the invention is applicable to the comprehensive dispatch of the electric heating combined system in the winter heating period in the area with abundant wind power and severe cold temperature, combines the central heating of heat power and the decentralized heating of electric power, utilizes the heat inertia of the heating pipe network and the building, increases the overall flexibility and the peak-shaving space of the electric heating combined system, and contributes to the improvement of the consumption of the wind power.

Description

technical field [0001] The invention relates to a method in the field of simulation and calculation of an electric power system, and specifically designs a dispatching method of a combined heat and power system for comprehensive heating of buildings and improvement of wind power consumption. Background technique [0002] With the reduction of fossil fuels and the intensification of environmental problems, wind power, as a clean and renewable power generation method, has been rapidly developed under the impetus of countries all over the world. As of the end of 2017, the cumulative installed capacity of wind power in my country has reached 188 million kW. However, with the substantial increase in wind power installed capacity, there has also been a more obvious problem of wind curtailment. In the first three quarters of 2017, China's accumulative curtailment of wind power was 29.55TWh. Although it has decreased compared with the same period in 2016, the problem of wind curtai...

AI Technical Summary

Problems solved by technology

However, with the substantial increase in wind power installed capacity, there has also been a more obvious problem of wind curtailment

In the first three quarters of 2017, China’s accumulative curtailment of wind power was 29.55TWh. Although it has decreased compared with the same period in 2016, the problem of wind curtailment in some provinces and regions is still very prominent

However, the construction period of the new channel is long, the investment is huge, and it will increase the economic burden for the power receiving area, so it is difficult to implement it in practice

[0011] However, some of these methods are too expensive, some are more difficult to implement, and some are likely to lead to energy waste.

In the heating process, there are several facts: due to the heating distance and the heat exchange sequence of hot water, the heating itself of each building is different; if the temperature is too high, the user can only reduce the temperature by opening windows, etc., wasting energy ; Different people have different preferences for heating temperature, and it is difficult to unify the temperature; the heating temperature is originally a range, there is no absolute standard

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