Ground source heat pump air-conditioning system device based on peak regulation and energy storage as well as control and operation method thereof

Abstract

The invention discloses a ground source heat pump air-conditioning system device based on peak regulation and energy storage as well as a control and operation method thereof. Particularly, the system is divided into two parts including a connection structure of system parts and an operation and control model. An inlet pipeline and an outlet pipeline of an energy storage box are respectively connected with temperature sensors, a solenoid valve, convertible frequency water pumps, electromagnetic flow meters, a water collector and the like. Two groups of water source heat pump units are connected between the inlet pipeline and the outlet pipeline of the energy storage box in parallel; three groups of the convertible frequency water pumps are connected between the outlet pipeline and a water distributor in parallel; and pressure difference transmitters are connected with the input ends and the output ends of N groups of fan coils in parallel. Signal harnesses of a programmable controller are respectively connected with the convertible frequency water pumps, the water source heat pump units, two electromagnetic flow meters, three temperature sensors and three pressure difference transmitters. The control and operation model comprises three parts of assuring starting time and stopping time of energy storage of the system, assuring the starting time and the stopping time of regulating the peak and releasing the energy by an energy storage device, and controlling the energy storage and the energy releasing in a transition season. According to the invention, the system is configured with a set of intelligently-controlled operation scheme, so that the load rate at a peak time interval can be greatly reduced and the operation cost is reduced by about 12%.

Description

technical field [0001] The invention relates to a building air-conditioning system, in particular to a ground-source heat pump air-conditioning operation and control system for energy storage using time-of-use electricity prices. Background technique [0002] As we all know, the central air-conditioning system of modern buildings is a large energy consumer, and its electricity consumption generally accounts for 40% to 60% of the electricity load of the entire building. Especially in summer, the energy consumption is still on the rise. brought heavy pressure. For many central air conditioners in office buildings, they have the characteristics of concentrated use time and large seasonal load, which aggravates the contradiction between the peak and trough of the power grid load. During the peak season of air-conditioning electricity consumption in summer, it accounts for about 30% to 40% of the total electricity load in cities, and it is as high as more than 50% in South China...

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Problems solved by technology

The problem is that after the ice storage equipment is put into operation, the energy utilization

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