CN-121979006-A - Group control method for room-level centralized cold distribution units

CN121979006ACN 121979006 ACN121979006 ACN 121979006ACN-121979006-A

Abstract

The application provides a room-level centralized cold energy distribution unit group control method, which relates to the technical field of CDU, and comprises the steps of receiving a group control instruction transmitted by an upper computer, wherein the group control instruction comprises group control parameters and setting information of a group control host machine and a slave machine; and determining a group control host and a slave corresponding to the group control mode in the CDU unit according to the group control instruction, synchronizing own parameters to the slave by using the host, controlling the group control host and the slave to work based on the current state and the working mode, wherein the working parameters of the group control host are the same as or different from those of the slave. The embodiment of the application can control the group control host and the slave according to the current working state and working mode when the parameters are synchronous, reduce the dependence of the slave on the host and the influence of the state fluctuation of the host, and improve the reliability and the stability of the group control system.

Inventors

CHEN HONGNIAN
LI CHENG

Assignees

远地(广州)数字科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (10)

1. A method for group control of room-level centralized cooling capacity distribution units, the method being used in a group control system, the group control system comprising a plurality of CDU units connected in a circulating manner, each CDU unit being connected to an upper computer, the method comprising: Receiving a group control instruction transmitted by the upper computer, wherein the group control instruction comprises group control parameters and setting information of a group control host machine and a slave machine; And determining a group control host and a slave corresponding to a group control mode in the CDU unit according to the group control instruction, synchronizing modification parameters of the host to the slave and controlling the group control host and the slave to work based on the current state and the working mode, wherein the working parameters of the group control host are the same as or different from those of the slave.
2. The room-level centralized cooling distribution unit group control method of claim 1, wherein the group control parameters include a number of runs, a synchronized parameter, a pump control mode, the method comprising: The group control host responds to a group control starting instruction and detects the number of CDU units added into the group control; If the number of the CDU units is smaller than the running number, reminding that the number of the CDU units is insufficient; the adding of the group control comprises the following steps: receiving a mode selection instruction; and if the CDU unit determines that the received mode selection instruction is a group control joining instruction, a group control joining request is sent to an object corresponding to the group control joining instruction so as to switch to a group control mode.
3. The room-level centralized cooling capacity distribution unit group control method of claim 1, wherein the synchronization of the parameters comprises: the slave determines a modification parameter based on the parameter to be synchronized, acquires latest modification information of the modification parameter on the group control host, and synchronizes the modification parameter according to the latest modification information; based on the synchronized modification parameters and the detection parameters itself.
4. The room-level centralized cooling capacity distribution unit group control method of claim 1, wherein the operating modes include a differential pressure mode, a flow mode, and controlling the group control master, slave to operate based on a current state and operating mode, comprising: controlling the work of the group control host and the slave according to the working mode, and receiving an instruction of changing the work into manual work; and acquiring a change object corresponding to the instruction and a change value corresponding to the parameter, and controlling the change object to execute the change value.
5. The room-level centralized cooling capacity distribution unit group control method of claim 4, wherein a bypass valve is provided on the secondary side of the CDU unit, and the controlling the group control master and slave operate based on the current state and operation mode comprises: Determining the current mode to control the group control host and the slave to work, and acquiring total flow setting information and fault information of a CDU unit; and determining the target flow of the slave machine according to the total flow setting information and the fault information, and controlling the bypass valve to work based on the target flow.
6. The room-level centralized cooling capacity distribution unit group control method of claim 5, wherein the controlling the group control master, slave, to operate based on current status and operating mode comprises: determining that the group control host and the slave are controlled to work in a pressure difference mode at present, and synchronizing a target pressure difference value of the group control host and the frequency of a secondary side water pump to the slave; and controlling the slave to acquire a pressure difference detection value of the slave so as to adjust the two-way valve of the secondary side.
7. The room-level centralized cooling capacity distribution unit group control method of claim 1, wherein the status comprises a run time of the slaves, controlling the group control master, the slaves to operate based on a current status and mode of operation, comprising: And if the current requirement for the round adjustment is determined according to the round information and the standby machine in the secondary machine has no fault, determining a CDU unit which works currently in the secondary machine, stopping an object with the longest working time in the CDU unit, and starting an object with the shortest working time in the standby machine, wherein the round condition is determined based on a round interval.
8. The room-level centralized cooling capacity distribution unit group control method of claim 7, wherein controlling the group control master, slave, to operate based on current status and operating mode comprises: And if the current meeting of the round-robin condition and the standby machine failure are determined according to the round-robin information, starting the standby machine and shutting down the CDU unit which works currently according to the level of the standby machine failure.
9. The room-level centralized cooling capacity distribution unit group control method of claim 1, wherein the status comprises the CDU unit failure, controlling the group control master, slave, to operate based on current status and mode of operation, comprising: And if the CDU unit faults are detected, acquiring the number of the CDU units which are currently available, and switching the faulty CDU units according to the number and the grade of the CDU unit faults.
10. The room-level centralized cooling capacity distribution unit group control method of claim 9, wherein switching of a failed CDU unit is performed according to the number and the level of the CDU unit failure, comprising: If the number is determined to be insufficient and the grade is less than one grade, the fault CDU unit is controlled to continue to work; and if the grade is determined to be one grade, closing the fault CDU unit.

Description

Group control method for room-level centralized cold distribution units Technical Field The application relates to the technical field of CDU (compact digital unit), in particular to a room-level centralized cold distribution unit group control method. Background The CDU (Coolant Distribution Unit, cold distribution unit) is a system for distributing a cooling liquid between liquid-cooled electronic devices, and includes components such as a sensor, a pipeline, a frequency converter, a water pump, and a valve. When the water supply pipelines of a plurality of CDUs supply water to the tail end equipment together, in order to avoid the water pumps of the CDUs running at different frequencies and causing water pump loss, or because the equipment cannot be backed up mutually, when the CDUs have faults, other CDUs cannot sense, the control units of the CDUs form a group control system (namely, the CDUs form a centralized cold energy distribution unit serving as the group control system). The group control system uses one device as a group control host, other devices as slaves, and all the devices cooperate according to the command of the group control host. In the prior art, the slave machine is used for synchronizing working parameters of the host machine, the working state of the group control host machine is seriously depended on by the mode, and the working state of the slave machine is easily interfered due to the state fluctuation of the group control host machine, so that the reliability and the stability of the group control system are poor. Disclosure of Invention The embodiment of the application provides a room-level centralized cold distribution unit group control method, which can solve the problems that the working state of a slave machine is easily influenced by the group control host machine in the prior group control mode and the reliability and stability of a group control system are poor. In order to achieve the object, embodiments of the present application provide the following solutions. According to an aspect of the embodiment of the present application, there is provided a group control method of a centralized refrigeration capacity distribution unit at a room level, for a group control system, the group control system including a plurality of CDU units connected in a circulating manner, each of the CDU units being connected to an upper computer, the method including: Receiving a group control instruction transmitted by the upper computer, wherein the group control instruction comprises group control parameters and setting information of a group control host machine and a slave machine; And determining a group control host and a slave corresponding to a group control mode in the CDU unit according to the group control instruction, synchronizing modification parameters of the host to the slave and controlling the group control host and the slave to work based on the current state and the working mode, wherein the working parameters of the group control host are the same as or different from those of the slave. In one possible implementation, the group control parameters include a number of runs, a synchronized parameter, a pump control mode, the method comprising: The group control host responds to a group control starting instruction and detects the number of CDU units added into the group control; If the number of the CDU units is smaller than the running number, reminding that the number of the CDU units is insufficient; the adding of the group control comprises the following steps: receiving a mode selection instruction; and if the CDU unit determines that the received mode selection instruction is a group control joining instruction, a group control joining request is sent to an object corresponding to the group control joining instruction so as to switch to a group control mode. In one possible implementation, the synchronization of the parameters includes: The slave determines a modification parameter based on a parameter to be synchronized, acquires latest modification information of the modification parameter on the group control host, and synchronizes the modification parameter according to the latest modification information; based on the synchronized modification parameters and the detection parameters itself. In one possible implementation manner, the operation modes include a differential pressure mode and a flow mode, and the group control master and the slave are controlled to operate based on the current state and the operation mode, and the method includes: controlling the work of the group control host and the slave according to the working mode, and receiving an instruction of changing the work into manual work; and acquiring a change object corresponding to the instruction and a change value corresponding to the parameter, and controlling the change object to execute the change value. In one possible implementation manner, a bypass valve is arranged on the secondary si