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DL/T 2035-2019: Technical requirements for energy efficiency online monitoring system of centralized air conditioning
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Basic data | Standard ID | DL/T 2035-2019 (DL/T2035-2019) | | Description (Translated English) | Technical requirements for energy efficiency online monitoring system of centralized air conditioning | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | F20 | | Classification of International Standard | 27.010 | | Word Count Estimation | 19,145 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Regulation (derived from) | Natural Resources Department Announcement No. 7 of 2019 | | Issuing agency(ies) | National Energy Administration | | Summary | This standard specifies the definition, working environment requirements, system design requirements, system function requirements and main performance indicators of the centralized air conditioning energy efficiency online monitoring system. This standard is applicable to the design, development, construction, operation and maintenance of the online monitoring system for energy efficiency of centralized air-conditioning. | DL/T 2035-2019: Technical requirements for energy efficiency online monitoring system of centralized air conditioning
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Technical requirements for energy efficiency online monitoring system of centralized air conditioning
ICS 27.010
F 20
Record number. 63143-2018
People's Republic of China Electric Power Industry Standard
Technical requirements for online monitoring system for energy efficiency of centralized air conditioners
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Terms and definitions...1
4 Working environment requirements...1
5 System design requirements...3
6 System Function Requirements...4
7 Main system performance indicators...15
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents, and the issuing agency of this document is not responsible for identifying these patents.
This standard was proposed by the China Electricity Council.
This standard is under the jurisdiction of the National Smart Grid User Interface Standardization Technical Committee.
The main drafting organizations of this standard. State Grid Jiangsu Electric Power Co., Ltd., State Grid Co., Ltd., State Power NARI Technology Co., Ltd.,
China Electric Power Research Institute Co., Ltd., Beijing Huiheshi Technology Co., Ltd., Jiangsu Lianhong Smart Energy Co., Ltd.
The main drafters of this standard. Zhou Qiang, Song Jie, Wu Baocai, Shen Hongwei, Chen Songsong, Wang Qunjun, Chen Chu, Wei Hongbing, Zhang Weiguo, Xu
Shi Ming, Li Xueming, Hu Jiaqi.
If you have any comments or suggestions during the implementation of this standard, please send them to the Standardization Management Center of the China Electricity Council (Address. Beijing West
No. 1 Ertiao, Baiguang Road, City District, Zip Code. 100761).
Technical requirements for online monitoring system for energy efficiency of centralized air conditioners
1 Scope
This standard specifies the definition, working environment requirements, system design requirements, and system functional requirements of the online energy efficiency monitoring system for centralized air-conditioning
And the main performance indicators of the system.
This standard is applicable to the design, development, construction, operation and maintenance of the online monitoring system for energy efficiency of centralized air conditioners.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 2887 General Specification for Computer Site
GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test
GB/T 17626.3 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic field radiation immunity test
GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test
GB/T 17626.5 Electromagnetic compatibility test and measurement technology surge (impact) immunity test
GB/T 17626.6 Electromagnetic compatibility test and measurement technology Radio frequency field induced conducted disturbance immunity
GB/T 17626.8 Electromagnetic compatibility test and measurement technology Power frequency magnetic field immunity test
GB/T 17626.12 Electromagnetic compatibility test and measurement technology Ring wave immunity test
GB/T 17981 Economic operation of air conditioning system
GB/T 31960.2-2015 Technical Specification for Power Energy Efficiency Monitoring System Part 2.Main Station Function Specification
GB/T 31960.8 Technical Specification for Power Energy Efficiency Monitoring System Part 8.Safety Protection Specification
GB/T 50155 Terminology standard for heating, ventilation and air conditioning
GB 50168 Code for Construction and Acceptance of Cable Lines of Electrical Installation Engineering
GB 50169 Code for construction and acceptance of grounding devices for electrical installations
GB/T 50312 Code for acceptance of integrated wiring system engineering
GB 50343 Technical Specification for Lightning Protection of Building Electronic Information System
3 Terms and definitions
The following terms and definitions defined in GB/T 17981 and GB/T 50155 apply to this document.
3.1
Centralized air conditioning system
An air-conditioning system that centrally processes, transports and distributes working media. Including water-cooled central air-conditioning system, multi-line air-conditioning (heat pump)
Types of systems and energy towers. The core equipment includes heat pumps, chillers (compression, absorption, constant flow, constant speed, variable speed, lithium bromide
Etc.), hot water units (direct normal pressure, indirect normal pressure, etc.), cold and heat storage devices and fresh air units, etc.
3.2
Centralized air conditioning energy efficiency online monitoring system
Through the installation of classification and sub-item energy efficiency metering devices for the centralized air conditioning system, real-time collection of energy efficiency data is achieved to achieve the performance of the centralized air conditioning system.
The general term for hardware and software systems with effective online monitoring and dynamic analysis functions.
3.3
Air conditioning system cooling load
The cooling load borne by the air-conditioning system, in addition to the cooling load of the air-conditioning area, also includes various cooling loads such as fresh air cooling load and reheating cooling load.
3.4
Annual cooling consumption on air conditioning
The total cold consumption of an air-conditioning user or all air-conditioning users in the cooling system in a year.
3.5
Annual heat consumption on air conditioning
The total heat consumption of an air-conditioning user or all air-conditioning users in the heating system in a year.
3.6
Cooling or heating coefficient of performance
Under the specified experimental conditions, the ratio of the cooling capacity and heating capacity of the refrigeration and heating equipment to its power consumption is expressed in W/W.
COP refrigeration unit = cooling capacity (W)/input power (W)
COP heating unit = heating capacity (W)/input power (W)
3.7
Energy efficiency ratio of terminal system
The ratio of the total cold produced by the air conditioning system to the energy consumption at the end of the air conditioning system, referred to as EERt.
3.8
Seasonal energy efficiency ratio
During the cooling season, the ratio of the total heat removed from the room during the cooling operation of the refrigeration equipment to the total power consumption, and its value is
kWh/kWh said, referred to as SEER.
3.9
Heating seasonal performance factor
During the heating season, the ratio of the sum of the total heat sent to the room during the heating operation of the heating equipment to the sum of the total power consumption, the value is
kWh/kWh said, referred to as HSPF.
3.10
Annual performance factor
Taking one year as the calculation cycle, the heat removed from the room by the same cooling and heating equipment during the cooling season and the amount of heat sent into the room during the heating season
The ratio of the total amount of heat to the total amount of electricity consumed in the same period. Its value is expressed in kWh/kWh, abbreviated as APF.
3.11
Electricity consumption to transferred cooling or heatquantity ratio
Under design conditions, the ratio of the total power consumption of the circulating water pumps of the air-conditioning cold and hot water system to the design cooling or heating load is a measure of the
An indicator of the efficiency of cooling and heating energy, referred to as ECR-a or EHR-a.
3.12
Integrated part load value
The part-load efficiency index of chillers and other equipment represented by a single value, which is based on the coefficient of performance when the unit is part-loaded
The value is obtained by weighted summation calculation according to the operating time of the unit under various load rates and other factors, referred to as IPLV.
4 Working environment requirements
4.1 Environmental conditions of system equipment
Servers, workstations, display screens (devices), network communications, firewalls and other equipment used in the system master station, as well as buildings and surrounding environment
The system access terminals include energy efficiency collection terminals, electricity and heat (cold) measurement and monitoring meters, temperature and humidity, pressure sensors, and DDC control
The end temperature controller, etc. should meet the requirements of Table 1 and Table 2.
5 System design requirements
5.1 System composition
The centralized air-conditioning energy efficiency online monitoring system consists of the centralized air-conditioning energy efficiency online monitoring main station, communication network, energy efficiency collection terminal and terminal transmission.
The system structure is shown in Figure 1.
Figure 1 Centralized air conditioning energy efficiency online monitoring system structure
Among them, the central air conditioning energy efficiency online monitoring main station is operated and maintained by the air conditioning energy efficiency monitoring administrator. The master station uses fieldbus, Ethernet,
The internal communication network such as wireless is connected to the air conditioning energy efficiency collection terminal. The energy efficiency collection terminal can be used on-site such as BACnet, LonWorks, RS-485, etc.
The bus is connected to system terminals such as measurement monitoring meters and sensors to collect the following three types of data.
a) The air-conditioning system as a whole and the main energy-consuming equipment such as main engine, circulating pump and cooling tower
Electricity consumption data;
b) Operating condition data of the air conditioning system host, circulating pump, and cooling tower;
c) The temperature and humidity data of the main activity space in the building and the outdoor environment.
The centralized air-conditioning energy efficiency online monitoring system can be interconnected with the internal building automation system (BAS) and the upper-level energy management platform
through.
5.2 Master station design requirements
5.2.1 Master station hardware equipment
The hardware equipment of the master station of the centralized air-conditioning energy efficiency online monitoring system shall meet the following requirements.
a) The deployment location of the master station includes data center, computer room, etc., data center, computer room
The hardware configuration must meet the system function requirements of Part 6 of this standard;
b) The master station equipment should adopt the mainstream equipment that meets the standard, and the master station configuration should meet the system
System functions and performance indicators are required to ensure the real-time, reliability, stability and safety of system operation, and fully consider
Maintainability and scalability requirements.
5.2.2 Master station software
The main station software of the central air-conditioning energy efficiency online monitoring system shall meet the following requirements.
a) The operating system of the master station should support multi-tasking and have concurrent processing capabilities
It provides a standard database call interface to the outside world, has fault tolerance and recovery capabilities, and has a safety mechanism to ensure the system
Safe and reliable;
b) The application software of the master station should meet the system functional requirements, ensure its open performance, and
Meet the needs of system application, maintenance and continuous optimization and upgrade, and provide detailed system application, maintenance, interface and other technical documents
files;
c) The master station can have web publishing function, which is convenient for system operation and maintenance personnel to use mobile office
use.
5.3 Communication network design requirements
Centralized air-conditioning energy efficiency online monitoring system communication network, including internal communication network, public Internet and field bus network (system site
Network), should meet the real-time, stability, and reliability requirements of energy efficiency collection services, and take corresponding safety protection measures.
a) The internal communication network realizes the energy efficiency online monitoring of the master station and the client/user as well as the energy efficiency
The communication connection between the online efficiency monitoring master station and the energy efficiency collection terminal;
b) The public Internet realizes the online energy efficiency monitoring, the main station's external service release and other information
Interactive function
c) Fieldbus network is responsible for the energy efficiency collection terminal and the centralized air conditioning system power supply
Connection of monitoring instrument, air conditioner host and ambient temperature and humidity sensing equipment.
5.4 Design requirements for energy efficiency collection terminals
The energy efficiency collection terminal should have the functions of communication, collection, storage and control, support the mainstream field bus interface and be
The field bus is expanded.
The energy efficiency collection terminal supports two collection methods. direct collection from sensor equipment and collection from air-conditioning communication interface.
5.5 System interface
5.5.1 Interface with building automation system
The interface between the air-conditioning energy efficiency online monitoring system and the building automation system is mainly used to interact with the operating data of the air-conditioning system and can receive the building
Air conditioning operation strategy issued by the automation system.
5.5.2 Interface with superior energy management system
The centralized air-conditioning energy efficiency online monitoring system can upload the total air-conditioning power consumption and energy efficiency data to the upper-level energy management system such as the government and grid companies
according to.
6 System functional requirements
6.1 System function configuration table
The online energy efficiency monitoring system for centralized air conditioners shall have online energy efficiency (energy consumption), operating status (working conditions), and indoor and outdoor environment of centralized air conditioners.
Environmental temperature and humidity monitoring, with data collection, data storage, processing, display, data query, export, printing, security protection, event,
Alarm management, operation and maintenance, management and other functions.
a) The function configuration of the master station of the centralized air-conditioning energy efficiency online monitoring system should conform to Table 3
Provisions.
6.3 System communication transmission function
The communication transmission function of the online energy efficiency monitoring system for centralized air-conditioning shall meet the following requirements.
a) The master station performs two-way communication and information exchange with the following systems or terminals.
1) Upper-level master station, such as power energy efficiency monitoring system, energy management system;
2) User or client, energy efficiency collection terminal;
3) Local existing third-party related systems such as BAS;
4) The system associated with the park or electric energy service organization.
b) The energy efficiency collection terminal has the following functions.
1) Through the system site network, it can be connected to the components of the air-conditioning system, measuring and monitoring meters, sensors, air-conditioning terminal thermostats,
Gateway, DDC controller, etc.;
2) Follow the standard communication protocol corresponding to the interface such as BACnet, LonTalk, DL/T 645, ModBus, etc., and access the terminal
Carry out two-way communication transmission and information exchange;
3) Supports two modes of uploading data information. master command and regular sending request command.
c) The system field network can adopt BACnet, LonWorks and other control networks as the main control network, or RS-485 bus wire if conditional
Networking mode, wireless communication networking mode can be partially adopted if construction and other conditions are restricted;
d) When the master station and the energy efficiency collection terminal are in the sending or receiving data information mode, the data is caused by the failure of the network or the communication transmission equipment.
According to the information transmission breakpoint, when the network communication returns to normal, it can automatically breakpoint to resume transmission or receive the interrupted data information to ensure the connection
Continued complete.
6.4 Master station functional requirements
6.4.1 Data collection function
The master station shall collect various data information according to the system data items in Table 5, which shall meet the requirements of 4.7.1, 4.7.2, and 4.7.3 in GB/T 31960.2-2015
Regulations.
The data collection function of the system is lost due to the exit or failure of any energy efficiency collection terminal, meter or field device;
b) There are log records and alarms for abnormal data collection functions caused by non-system collection.
6.4.2 Data storage, processing and display functions
6 Event and alarm information
Failure of metering and monitoring equipment √ √
6.4.2.1 Data storage
The data storage of the master station shall meet the following requirements.
a) Real-time collection and data processing data information should be automatically stored in the server database;
b) The stored data includes at least setting and configuration information, user information, electric energy measurement and monitoring data, air-conditioning system operating status (engineering
Status) monitoring and measurement data, environmental monitoring data, and information such as safety, events, and alarms;
c) The energy efficiency data obtained by storage calculation includes the following.
1) Central air-conditioning system's electricity-to-cooling or electricity-to-heat energy efficiency and its equipment energy efficiency;
2) The energy efficiency of multi-line air-conditioning system and its equipment.
d) The collected real-time online data such as electrical parameters, air-conditioning system operating status (working condition) parameters, etc., which change rapidly and have short storage intervals
Data information should be stored in real-time database and saved;
e) Accumulated data such as electricity, water, cooling, heat, etc., and can generate hour, day, month, year statistical data, and abnormal records (such as
All kinds of accident recall, alarm information), operation of duty personnel and other data information, including network communication, etc.
The interruption data imported by the energy efficiency collection terminal should be stored in the historical database and saved.
6.4.2.2 Data processing
The data processing of the master station shall meet the following requirements.
a) Verify and process valid and invalid data, and have fault-tolerant processing capabilities;
b) Relational operations, logical operations, arithmetic and functional operations, etc.;
c) Energy efficiency calculation of centralized air conditioning system.
6.4.2.3 Data display
The master station shall display all or part of the real-time and historical information through the display screen or large screen or TV curtain wall or projection according to the requirements of Table 5 and Table 6.
Data information is displayed in the form of text, data, curves, charts, etc.
6.4.3 Data query, export and print functions
The master station data query, export, and print are not limited to the following requirements.
a) Including manual entry and automatic collection, storage and statistical analysis of various data queries, user information, configuration or setting information, status
Query status and alarm information;
b) Support browser and APP query;
c) It can be exported and printed to form text, various graphs, curves, such as load curves and reports, etc. according to needs;
d) Alarm setting and query, export and print of event and alarm information;
e) Query, export and print maintenance information and operation records of the system and its equipment.
6.4.4 Safety protection function
The safety protection function of the master station shall comply with the requirements of the relevant physical, network, host, application, and data safety requirements in GB/T 31960.8.
6.4.5 Event and alarm management function
The event and alarm management functions of the master station shall meet the following requirements.
a) Based on the data provided by the system, equipment operating status (working conditions) and other information, the safety of possible energy, network, data, etc.
Early warning and treatment of hidden dangers;
b) Alarm points, alarm thresholds, alarm levels, etc. can be set to alarm and deal with events that occur;
c) Automatically record events, receive alarm information, pop-up interface, sound and light alarm and SMS push.
6.4.6 System operation and maintenance functions
The operation and maintenance functions of the master station system shall meet the following requirements.
a) Operation authority and password management, system and terminal clock synchronization;
b) System and equipment, network operation status management, software and data information maintenance and backup;
c) Index management, verification and modification of energy consumption, energy efficiency evaluation, benchmarking, etc.
6.4.7 Human Machine Interface
The man-machine interface of the master station shall meet the following requirements.
a) Use dialogue methods such as graphics and input windows to provide an interface for user interaction;
b) Convenient operation, text, graphics, and screen can be displayed at the same time, and the text adopts simplified Chinese and national standard fonts.
6.4.8 User management function
6.4.8.1 Basic requirements
The user management function of the master station shall have user information and file management functions.
6.4.8.2 User Information
The master station shall provide users with manual self-service functions, which can input, store, query, and maintain not limited to all or part of the following information.
a) User name, user address, contact person, and contact information;
b) Building area, air-conditioning and ventilation area, type of air-conditioning and ventilation system, equipment manufacturer or provider, communication (data) connection
Mouth type
c) Central air-conditioning system and its various equipment brand, name, serial number, date of delivery or commissioning, quantity, cooling capacity, heating capacity, amount
Fixed power, installation location, etc.;
d) Multi-line air conditioning system and its equipment brand, name, serial number, date of delivery or commissioning, quantity, cooling capacity, heating capacity, rating
Power, installation location, etc.;
e) The air-conditioning system power supply circuit, electric energy and heat (cold) quantity, flow measurement monitoring meter, energy efficiency collection terminal, temperature, humidity and pressure transmission
Sensor and other information;
f) Related existing third-party system information.
6.4.8.3 File management
The file management function of the master station shall meet the following requirements.
a) Generate corresponding ledger and information management and maintenance based on user information, such as user
Information, air conditioning system and its equipment account;
b) File information management of air-conditioning system electricity consumption includes but not limited to.
1) Measuring method, electrical connection method (main wiring diagram);
2) The corresponding power supply area information such as substation, power line and station area.
c) Current and historical energy consumption monitoring, energy efficiency data and energy efficiency analysis records of the air conditioning system
File creation and information management;
d) The air-conditioning system energy-saving technology transformation and its energy-saving effect verification, e...
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