Application of Acrel5000web energy consumption system in a college

Jiangsu Ankerui Electric Appliance Manufacturing Co.
, Ltd.
Jiangsu Jiangyin 214400 Abstract: The total area of large public buildings is less than 4% of the total urban building area, but the total energy consumption accounts for 22% of the total electricity consumption of cities and towns in the country, and the annual power consumption of large public building areas reaches 70~300KWh, which is 10~20 times
that of ordinary residential buildings.

Public buildings are large energy-saving households, and doing a good job in energy-saving work in public buildings is of great significance to promoting and driving the energy-saving work of the whole society, achieving energy conservation and emission reduction goals, and implementing the major strategy of
"changing the mode and adjusting the structure".

This article introduces the energy management system of a Suzhou Technician College, which uses intelligent power meters to collect various electrical parameters and switching signals
at the distribution site.

The system adopts the way of on-site networking, which communicates through the fieldbus and transmits to the background after networking, and realizes real-time monitoring
of the power consumption of the distribution circuit and the energy consumption of each sub-item through the AcrelCloud-5000 energy consumption cloud platform.

Keywords: large public buildings; Classification sub-items; Schools; Energy consumption monitoring system
.

1.
Overview Suzhou Technician College was founded in 1960, affiliated to Suzhou Municipal Human Resources and Social Security Bureau, is a public full-time technical college
.

The college is close to the beautiful scenery of Shihu Lake Scenic Area, covers an area of 255 acres, construction area of 208,000 square meters, is the national vocational education reform and development demonstration school, vocational training institute pilot, has been awarded "national high-skilled personnel training base", "national vocational education advanced", "national skills competition outstanding contribution award" and other honorary titles
.

In line with the purpose of "striving for advanced and creating a green campus", the college hopes to build a set of energy consumption management system to achieve unified management of the energy consumption of the entire college, help identify potential energy-saving opportunities, and maximize energy efficiency.
In order to establish a conservation-oriented social role 1.
1 system program According to customer needs and the actual situation of the project, the system composition scheme is composed
of Acquaray single rail table DDSD1352 and three-phase multi-function rail table DTSD1352, communication management machine ANet1E2S1 and database server and energy consumption management cloud platform software.

1.
2 Customer demand College in the 4 teaching buildings are distributed in 128 classrooms, each classroom is installed with cabinet type air conditioning, air conditioning next to the original PZ30 distribution box, due to the air conditioning and very scattered, often appear unreasonable opening or not timely closure of the situation, resulting in a lot of energy waste
.

Therefore, on the basis of conventional energy consumption monitoring and energy consumption analysis, the school also particularly hopes to carry out unified and centralized management of these cabinet air conditioners, monitor the operating status of air conditioners in real time, and remotely turn on or off the air conditioning power supply through background software or mobile phone APP, set the time of opening and closing the air conditioning power supply in a unified way, and automatically cut off the power supply
according to the set time.

To reduce the workload of personnel on-site inspection, at any time to find unreasonable energy, reduce the power
consumption of air conditioning.

2.
System architecture? There are a total of 110 power consumption monitoring points in the two substations - complete the power consumption monitoring of all distribution circuits of the entire substation; 4 teaching buildings A total of 136 electricity monitoring points - complete 128 ordinary classrooms, 4 ladder classrooms and the total amount of electricity monitoring of buildings; ?Training Building A total of 20 electricity monitoring points - for each floor to monitor electricity; ?Dormitory area 4 electricity monitoring points - to master the overall electricity monitoring of each dormitory; ?Graphic center, conference center, gymnasium, canteen and other 5 public buildings a total of 15 electricity monitoring points - to achieve electricity monitoring on each floor; Outdoor lighting - three circuits for independent power monitoring; Each building is equipped with an ANet-2E4S1 smart gateway, which regularly uploads the collected energy data to the energy consumption server
.

The management of cabinet type air conditioners in the classroom is realized by DTSY1352-NK (NB) radio meter, which communicates
with the server in the form of NB.

3.
Interface display 4.
Implement the function 4.
1 Energy consumption data upload software function requirements: data can be uploaded to the corresponding regional platform; the upload cycle can be set flexibly, and the uploaded data can be encrypted; 4.
2 Support browser, client, App to access energy consumption data, convenient for users to use; 4.
3 Provide configuration page to facilitate users to expand monitoring points; 4.
4 to meet the user's needs for energy consumption history data query, data storage time is not less than 3 years 5.
5 system has a perfect authority management function, to ensure that users can only access the functions and data, to avoid unauthorized operation; 5.
6 system reserves interfaces and protocols connected with third parties; 5.
7 supports real-time power monitoring: can display the distribution map, support to view voltage, current, active/reactive power, active/reactive power, power factor, frequency and other power parameters
.

5.
8 Support real-time monitoring of water consumption on each floor and key water use areas on the water network map
.

5.
9 Support the monitoring of smart meters, remote water meters, energy meters and other metering, temperature and humidity sensors, data collectors and other metering equipment of the system connected to the building, and display the communication status and data
of the instrument in real time.

5.
10 The system supports meter reading, daily, monthly and annual report functions, and tables support export
.

5.
11 Support a variety of abnormal alarm model configuration, alarm types include communication fault alarm, energy consumption exceeding the standard alarm and parameter overrun alarm; The alarm can alert the user
through pop-up windows, bells, sounds, etc.

5.
12 Provide energy consumption manual input energy consumption function
.

5.
13 Provide equivalent to standard coal energy consumption function
。
7, recommended equipment ANet series communication gateway main features: rich interface: support serial port, Ethernet, 4G, Lora protocol is diverse: support Modbus-RTU, DL/T 645, CJT/188, MQTT, 104, energy consumption regulations and other powerful functions: support power failure alarm, hierarchical alarm, data calculation, resumable point resumption, data encryption and other management convenience: remote configuration, remote upgrade, remote monitoring gateway report: electromagnetic compatibility: GB/ T 17626.
2-2018 "EMC test and measurement technology electrostatic discharge immunity test" level
4.

GB/T 17626.
6-2017 "EMC Test and Measurement Technology Radio Frequency Electromagnetic Field Radiation Immunity Experiment" Level
3.

GB/T 17626.
4-2018 "EMC Test and Measurement Technology Electrical Fast Transient Burst Immunity Test" Level
4.

GB/T 17626.
5-2019 "EMC Test and measurement technology surge (shock) immunity test" level
4.

GB 9254-2016 "Radio Disturbance Limits and Measurement Methods for Information Technology Equipment" is qualified
.

GB/T 17618-2015 "Information Technology Equipment Immunity Limits and Measurement Methods" is qualified
.

8.
In 2020, the Institute of Conclusion declared to the Jiangsu Provincial Administration of Organ Affairs to create an energy-saving demonstration of public institutions in Jiangsu Province, and passed the acceptance of "Jiangsu Provincial Public Institutions Energy Conservation Demonstration" and won the title
of "Jiangsu Provincial Public Institutions Energy Conservation Demonstration" according to the seven aspects of the index requirements of the "Jiangsu Provincial Public Institutions Energy Conservation Demonstration Creation, Review and Energy Efficiency Creation Evaluation and Acceptance Standards".

With the development of society and the progress of the times, the number of schools is increasing year by year, as one of the places with huge energy consumption, the form of energy conservation and emission reduction work of the school has been very severe, therefore, the implementation of energy conservation and emission reduction measures for schools is very necessary
.

Doing a good job in the energy conservation work of schools is of great significance
to promoting and driving the energy conservation work of schools and achieving the goal of energy conservation and emission reduction.

Design Standards: Technical Guidelines for the Collection of Sub-item Energy Consumption Data of the Energy Consumption Monitoring System of State Organs Office Buildings and Large Public Buildings, Technical Guidelines for the Transmission of Sub-item Energy Consumption Data of the Energy Consumption Monitoring System of State Organs Office Buildings and Large Public Buildings, Technical Guidelines for the Design and Installation of Building Sub-metering and Installation of the Energy Consumption Monitoring System of State Organs Office Buildings and Large Public Buildings, "Specifications for the Construction, Acceptance and Operation of the Energy Consumption Monitoring System of State Organs Office Buildings and Large Public Buildings", "The Code for the Management of the Construction, Acceptance and Operation of the Energy Consumption Monitoring System of State Organs and Large Public Buildings", "The Technical Guidelines for the Design and Installation of the Energy Consumption Monitoring System of State Organs and Large Public Buildings", "The Technical Guidelines for the Design and Installation of the Energy Consumption Monitoring System of the State Organs Office Buildings and Large Public Buildings", "The Technical Guidelines for the Design and Installation of the Energy Consumption Monitoring System State organs office buildings and large public buildings energy consumption monitoring system software development instructions DL/T 645-1997 Multifunctional energy meter communication regulations DL/T 645-2007 Multifunctional energy meter communication regulations CJ/T 188-2004 Household metering instrument data transmission technical conditions GB/T 19582-2008 Industrial automation network specifications based on Modbus protocol