Gas-fired boiler and distributed off-peak electricity boiler joint heat supply system and method

Abstract

The invention provides a gas-fired boiler and distributed off-peak electricity boiler joint heat supply system and method. The electricity use concentration ratio can be reduced, and the capacity increase pressure of a transformer substation and a power supply line can be relieved. The system comprises a first circulation pump, a gas-fired boiler heat supply subsystem formed by connecting a plurality of gas-fired boilers in series or in parallel, a first controller, a distributed off-peak electricity boiler joint heat supply subsystem formed by connecting a plurality of distributed off-peak electricity boilers in series or in parallel, and a second controller, wherein the distributed off-peak electricity boilers are electric boilers using off-peak electricity as an energy source and are placed in equipment rooms of various heat supply zones or various heat supply buildings in a scattered mode, the first controller is used for controlling the gas-fired boilers to supply heat at non-off-peak electricity periods in the daytime or supply heat all day, and the second controller is used for controlling the distributed off-peak electricity boilers to replace the gas-fired boilers to supply heat at off-peak electricity periods at night or assist the gas-fired boilers in supplying heat. The gas-fired boiler and distributed off-peak electricity boiler joint heat supply system and method are suitable for the technical field of heat supply.

Description

technical field [0001] The invention relates to the technical field of heating, in particular to a combined heating system and method of a gas boiler and a distributed valley electric boiler. Background technique [0002] In recent years, energy and the environment have become urgent issues facing the world. China is currently the second largest energy producer and consumer in the world, and heating energy consumption accounts for about 1 / 4 of the total energy consumption. Most of the northern regions of my country, especially the provinces and cities north of the Yellow River, are areas that must be heated. The area that needs heating covers 17 provinces, municipalities, and autonomous regions across the country, accounting for more than 60% of the country's area. The heating population is more than 700 million. It is estimated that every year The energy cost for overall heating in winter is equivalent to nearly 70 billion yuan, accounting for about 1 / 4 of the country's tota...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a combined heating system and method of gas-fired boilers and distributed valley electric boilers to solve the problem of centralized placement of electric boilers in the prior art, resulting in large demand for electricity, making substations and electric power The problem of increased expansion pressure

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