CN-121981311-A - Multi-target dynamic cooperative regulation and control method for subway energy pile group

CN121981311ACN 121981311 ACN121981311 ACN 121981311ACN-121981311-A

Abstract

The invention discloses a multi-target dynamic collaborative regulation and control method for subway energy pile groups, which periodically collects temperature data, heat pump unit operation data, load demand and time information of the energy pile groups, divides the function roles of each region of the energy pile groups, adjusts dynamic weight factors based on the functions to relieve heat accumulation and save electricity consumption, and meets the load demand with a target function so as to adjust the flow of each region, and updates data in a rotation period to realize multi-target dynamic balance and collaborative regulation and control.

Inventors

WU YUANHAO
WU JIANQIU
LI ZHUOMIN
DAI XU
Xu Maohu
JIANG QINGSONG

Assignees

中国建筑第八工程局有限公司

Dates

Publication Date: 20260505
Application Date: 20251216

Claims (6)

1. A multi-target dynamic cooperative regulation and control method for subway energy pile groups is characterized in that, S1, establishing a multi-element information sensing and fusing module, periodically collecting stratum temperature field data of an energy pile group, heat pump unit operation data, building system external load demand data and time context information, S2, evaluating the running state and dynamically partitioning the energy pile group, dividing the energy pile group into a plurality of control areas, calculating the average temperature of the energy pile group and the temperature standard deviation of each control area based on the stratum temperature field data, dividing the roles of each control area into a main supply area, an auxiliary area and a balance area based on the temperature standard deviation, S3, multi-objective optimization regulation, constructing a dynamic weight factor aiming at relieving thermal stack and saving electricity consumption, regulating the dynamic weight factor according to the temperature standard deviation and the change of the heat pump unit operation data, combining the heat pump unit operation data and the dynamic weight factor to minimize an objective function to meet load requirements, solving regional flow values of a main supply region, an auxiliary region and a balance region and independent flow values of each energy pile, And S4, issuing an instruction and rotating the region, synchronously adjusting the flow of all the energy piles in the corresponding main supply region, auxiliary region and balance region according to the flow value of the region, independently adjusting the flow of the corresponding energy pile according to the independent flow value, setting a rotation period, initially re-executing S1 to S3 in each rotation period, and dividing the roles of each control region again based on the updated data.
2. The method for dynamically and synergistically regulating and controlling subway energy pile groups according to claim 1, wherein temperature sensors are distributed at intervals along the depth direction of each energy pile and used for monitoring the vertical temperature gradient of the energy pile, and soil temperature sensing arrays are arranged in soil of the energy pile group area and used for monitoring the soil temperature so as to acquire stratum temperature field data of the energy pile groups.
3. The method for dynamically and synergistically regulating and controlling the subway energy pile groups according to claim 1, wherein independent regulating valves are arranged on water inlet branch pipes of all energy piles and used for independently regulating the flow of corresponding energy piles, and zone regulating valves are arranged on water inlet or water return main pipes of all energy piles in each control zone and used for synchronously regulating the flow of all energy piles in the corresponding control zone.
4. The subway energy pile group multi-target dynamic cooperative regulation and control method according to claim 1, wherein the heat pump unit operation data comprise total flow, water supply and return temperature difference and host power consumption of the heat pump unit.
5. The method for multi-objective dynamic collaborative regulation and control of subway energy piles according to claim 1, wherein the time context information includes current season, day and night, and whether the current season is an operation peak.
6. The method for dynamically and synergistically regulating and controlling subway energy pile groups according to claim 1, wherein the main supply area bears 60% -80% of load demand, the auxiliary area bears 20% -40% of load demand, and the flow of the balance area is regulated to be minimum or completely closed.

Description

Multi-target dynamic cooperative regulation and control method for subway energy pile group Technical Field The invention relates to the technical field of underground engineering, in particular to a multi-target dynamic collaborative regulation and control method for subway energy pile groups. Background The support pile foundation around the subway tunnel provides a huge buried pipe space for geothermal energy development, and the energy pile group is to embed heat exchange pipes in the pile foundation, so that the heat exchange pipes exchange heat with surrounding rock-soil bodies to realize heating and refrigerating functions. The control of the subway energy pile group needs to meet multiple targets, namely, the requirement of meeting load requirements, namely, ensuring that the total heat exchange quantity of the system is matched with the requirements of subway environmental control or building heat supply/refrigeration is met. And secondly, maintaining the high efficiency of the system, namely reducing the comprehensive power consumption of equipment such as a water pump, a heat pump and the like as much as possible. And thirdly, ensuring sustainability, namely avoiding heat accumulation of the energy pile group and maintaining the heat balance of the stratum. These three goals tend to conflict with each other in a short period of time. In the prior art, most of control methods for the energy pile group are single-target or weighted average, and optimal balance under a dynamic situation cannot be realized. Therefore, how to realize multi-objective cooperative control on the energy pile group, and to realize multi-objective optimal balance become the urgent problem in the art. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a subway energy pile group multi-target dynamic system regulation and control method capable of realizing multi-target balance and cooperative regulation and control. In order to achieve the above purpose, the method for regulating and controlling the subway energy pile group multi-target dynamic system provided by the invention comprises the following steps: S1, establishing a multi-element information sensing and fusing module, periodically collecting stratum temperature field data of an energy pile group, heat pump unit operation data, building system external load demand data and time context information, S2, evaluating the running state and dynamically partitioning the energy pile group, dividing the energy pile group into a plurality of control areas, calculating the average temperature of the energy pile group and the temperature standard deviation of each control area based on the stratum temperature field data, dividing the roles of each control area into a main supply area, an auxiliary area and a balance area based on the temperature standard deviation, S3, multi-objective optimization regulation, constructing a dynamic weight factor aiming at relieving thermal stack and saving electricity consumption, regulating the dynamic weight factor according to the temperature standard deviation and the change of the heat pump unit operation data, combining the heat pump unit operation data and the dynamic weight factor to minimize an objective function to meet load requirements, solving regional flow values of a main supply region, an auxiliary region and a balance region and independent flow values of each energy pile, And S4, issuing an instruction and rotating the region, synchronously adjusting the flow of all the energy piles in the corresponding main supply region, auxiliary region and balance region according to the flow value of the region, independently adjusting the flow of the corresponding energy pile according to the independent flow value, setting a rotation period, initially re-executing S1 to S3 in each rotation period, and dividing the roles of each control region again based on the updated data. Further, temperature sensors are distributed at intervals along the depth direction of each energy pile and used for monitoring the vertical temperature gradient of the energy pile of the pile, and soil temperature sensing arrays are distributed in the soil of the energy pile group area and used for monitoring the soil temperature so as to acquire stratum temperature field data of the energy pile group. Further, independent regulating valves are arranged on the water inlet branch pipes of the energy piles and used for independently regulating the flow of the corresponding energy piles, and regional regulating valves are arranged on the water inlet or water return main pipes of all the energy piles in each control region and used for synchronously regulating the flow of all the energy piles in the corresponding control region. Further, the heat pump unit operation data comprises total flow, supply and return water temperature difference and host power consumption of the heat pump unit. Further, the time context information in