CN215295294U - Ventilation air conditioner full frequency conversion self-adaptation energy-saving control structure of subway newly-built station - Google Patents

Abstract

A full frequency conversion self-adaptive energy-saving control structure of a ventilation air conditioner of a newly-built subway station relates to the technical field of ventilation and air conditioning. The utility model discloses a management layer, network transmission layer and the control layer that connects gradually. The self-learning management system is structurally characterized in that the management layer comprises a man-machine interaction module, a self-learning control module and a communication interface module. The network transmission layer comprises a network interaction transmission module. The human-computer interaction module, the communication interface module and the network interaction transmission module are respectively connected with the self-learning control module. The control layer comprises a cold source control module I, a cold source control module II, a cold source control module III and a cold source information acquisition control module which are respectively connected with the network interaction transmission module. Compared with the prior art, the utility model discloses can be guaranteeing that station ventilation air conditioning system function is complete, the safety and stability and satisfy the prerequisite of indoor environment demand under, reach energy saving and emission reduction's purpose to can realize the online remote management to the entire system.

Description

Ventilation air conditioner full frequency conversion self-adaptation energy-saving control structure of subway newly-built station

Technical Field

The utility model relates to a ventilation and air conditioning technology field especially are applied to the ventilation air conditioning full frequency conversion self-adaptation energy-saving control structure at the newly-built station of subway.

Background

In recent years, urban rail transit in China is in a period of big development and big construction, and meanwhile, the energy consumption of rail transit is increased day by day. And among them, the ventilation air-conditioning system has high energy consumption intensity and large proportion. According to statistics, the energy consumption of the ventilation air-conditioning system of the northern subway station accounts for more than 30% of the total energy consumption of the station, and the energy consumption of the southern subway station even exceeds 50%. The reasons for high energy consumption are mainly: the subway station ventilation air-conditioning system is different from the traditional overground public building system form, and the traditional control mode on the ground is continuously used, so that the system characteristics of underground vehicles cannot be matched, and the problems of high cold consumption, low energy efficiency and the like are solved.

In the prior art, the control of a ventilation air-conditioning system of a subway station mainly has the following problems:

1) the control mode is single. The control mode is embodied in a ventilation system control mode and a cold source system control mode.

2) The equipment performs closed-loop control independently. Device hierarchy: the water pump and the fan are independently controlled by PID, the mutual influence among the devices is not considered, and the system is classified into the following stages: wind system and water system can't carry out coordinated optimization control, and each system is "independently for politics".

3) The variation of the time dimension of the device characteristics and the load characteristics is not considered. When the characteristics of the equipment change, the control strategy formulated in the initial stage of the system is still used, and the energy-saving control system cannot adapt to the change, so that the running performance of the equipment cannot be in the optimal state.

4) The control effect of the station is poor, and the control fluctuation is large. Because the prior art generally adopts a feedback control mode, the instability of the control and even the control failure can be caused by the large thermal inertia characteristic of the subway station.

Disclosure of Invention

To the problem that exists among the above-mentioned prior art, the utility model provides a ventilation air conditioner full frequency conversion self-adaptation energy-saving control structure at station is newly built to subway. The system can achieve the purposes of energy conservation and emission reduction on the premise of ensuring the complete function, safety and stability of the station ventilation air-conditioning system and meeting the requirement of indoor environment, and can realize the on-line remote management of the whole system.

In order to achieve the above object, the technical solution of the present invention is implemented as follows:

a ventilation air conditioner full-variable-frequency self-adaptive energy-saving control structure for a newly-built subway station comprises a management layer, a network transmission layer and a control layer which are sequentially connected. The self-learning management system is structurally characterized in that the management layer comprises a man-machine interaction module, a self-learning control module and a communication interface module. The network transmission layer comprises a network interaction transmission module. The human-computer interaction module, the communication interface module and the network interaction transmission module are respectively connected with the self-learning control module. The control layer comprises a cold source control module I, a cold source control module II, a cold source control module III and a cold source information acquisition control module which are respectively connected with the network interaction transmission module.

The utility model discloses owing to adopted above-mentioned structure, the management layer passes through network transmission layer network deployment with the control layer, realizes the data real-time interaction of management layer and control layer control. Data interaction between the energy-saving control structure and a subway station environment and equipment monitoring system is realized through the communication interface module, and permission undisturbed switching between the energy-saving control structure and the BAS system and control and monitoring of subway station ventilation air-conditioning large system equipment and field environment instruments are completed. After the management layer received control layer and BAS system data, optimize through self-learning control module, issue each module of control layer and BAS system with the control command after optimizing, realize the utility model discloses energy-saving control structure is to ventilation air conditioning system's optimal control, energy saving and consumption reduction. Additionally, the utility model discloses energy-saving control structure still possesses high reliability, and after management layer equipment broke down, control layer control module can independently accomplish the control to ventilation air conditioning system cold source equipment, and the control authority with ventilation air conditioning major system equipment returns BAS system control, guarantee subway station ventilation air conditioning system steady operation simultaneously. Compared with the prior art, the utility model discloses the energy-saving control structure has the operation law and the load change characteristics at automatic tracking and study station, and the operational mode and the equipment that can real-time adjustment ventilation air conditioning system are exerted oneself.

The invention is further described with reference to the following figures and detailed description.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

Referring to fig. 1, the utility model discloses ventilation air conditioner full frequency conversion self-adaptation energy-saving control structure at newly-built station of subway, including management layer, control layer and network transmission layer. The management layer comprises a man-machine interaction module 1, a self-learning control module 2 and a communication interface module 8. The control layer comprises a cold source control module I4, a cold source control module II 5, a cold source control module III 6 and a cold source information acquisition control module 7. The network transport layer comprises a network switching transport module 3. The man-machine interaction module 1 is connected with the network exchange transmission module 3 through the self-learning control module 2, and the self-learning control module 2 is connected with the communication interface module 8 through an embedded interface of the self-learning control module. The network exchange transmission module 3 is respectively connected with the cold source control module I4, the cold source control module II 5, the cold source control module III 6 and the cold source information acquisition control module 7 in a one-to-one correspondence manner. The communication interface module 8 is connected with a subway station environment and equipment monitoring system.

The utility model discloses increased one set of energy-saving control system structure to newly-built subway station, the controlled object is station ventilation air conditioning system equipment. The utility model provides a communication interface module 8 and subway station BAS headtotail, the control and the monitoring of the undisturbed switching of authority and subway station ventilation air conditioner major system equipment, site environment instrument between completion energy-saving control system and the BAS system. The utility model provides a cold source control module one 4 connects frozen water pump and refrigerated water electric valve, and cold source control module two 5 connects cooling water pump and cooling water electric valve, and cold source control module three 6 connects cooling tower fan and cooling tower electric valve, and cold source information acquisition control module 7 connects cooling water set, level pressure moisturizing device, water treatment facilities and pressure, temperature and flow sensor.

When the utility model discloses energy-saving control structure mode of operation switches to energy-conserving operating mode through man-machine interaction module 1, station ventilation air conditioning system equipment's control is accomplished by this energy-saving control structure. The energy-saving control structure reads data such as parameters, ammeter data, ambient temperature, humidity and carbon dioxide of a fan device of a large ventilation air-conditioning system in the BAS system in a ModbusTCP/IP communication mode through the communication interface module 8, and reads data of the cold source control module I4, the cold source control module II 5, the cold source control module III 6 and the cold source information acquisition control module 7 in the ModbusTCP/IP communication mode through the network interaction transmission module 3. After data of the large ventilation air conditioner system and the cold source modules are read, the self-learning control module 2 calculates, analyzes and optimizes the data, and then the analysis result is respectively sent to the BAS system and the control layer cold source modules. The self-learning control module 2 is used as the core of the structure, completes the optimization control strategy of the whole system of the station ventilation air conditioner by automatically tracking and learning the operation rule and the load change of the station, and guides the BAS system to adjust the operation mode of the large system of the ventilation air conditioner and the operation frequency of the fan; and the cold source control module I4, the cold source control module II 5, the cold source control module III 6 and the cold source information acquisition control module 7 are guided to perform global optimization control on the cold source, the cold supply mode of the cold source, the running frequency of a chilled water pump, a cooling water pump and a cooling tower are adjusted, the running mode of the whole system of the ventilation air conditioner and the equipment output are adjusted in real time, and the aims of saving energy and reducing consumption are fulfilled. The utility model provides a human-computer interaction module 1 possesses friendly human-computer interaction function, and the operation personnel of being convenient for master station ventilation air conditioning system running state, environmental index and energy consumption data in real time, realize functions such as long-range expert's energy-conserving monitoring, energy consumption diagnosis, trouble early warning.

Work as the utility model discloses station disaster signal or artificial operation are received to the energy-saving control structure, can withdraw from the control authority to this station ventilation air conditioning system major system equipment rapidly, and the BAS system can be returned to undisturbed in the control authority, guarantees that the BAS system carries out conflagration mode or manual operation mode according to station conflagration linkage strategy, the security of guarantee system.

The utility model discloses the structure is in the application of newly-built subway station, has solved the control mode that exists is single, the station control effect is not good, the low scheduling problem of system efficiency in the control of present ventilation air conditioning system. And realizing the decentralized control of the control process through control units of different levels. Meanwhile, the arrangement of the structure also solves the problems of large investment, small output, complex system scheme, poor stability and the like of later-stage energy-saving transformation. The capital investment can be reduced by more than 20% by comparison of accounting and later-stage modification. In addition, through the application of the structure, the complexity of a ventilation air-conditioning control system can be reduced, and the ventilation air-conditioning control system is highly integrated with a BAS system. Through actual measurement, the application of the structure can realize the energy-saving effect of more than 30% of the station air conditioning system. Besides, the comfort level of the station can be improved, and the social influence is improved.

Claims (1)

1. A ventilation air conditioner full frequency conversion self-adaptive energy-saving control structure of a newly-built subway station comprises a management layer, a network transmission layer and a control layer which are sequentially connected; the system is characterized in that the management layer comprises a human-computer interaction module (1), a self-learning control module (2) and a communication interface module (8), the network transmission layer comprises a network interaction transmission module (3), and the human-computer interaction module (1), the communication interface module (8) and the network interaction transmission module (3) are respectively connected with the self-learning control module (2); the control layer comprises a cold source control module I (4), a cold source control module II (5), a cold source control module III (6) and a cold source information acquisition control module (7) which are respectively connected with the network interaction transmission module (3).

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