Application of Acrel-2000 Power Monitoring System in Guangzhou Wanda Plaza Project

Dai Jinhua

Jiangsu Ankerui Electric Appliance Manufacturing Co., Ltd.

Abstract: This article mainly introduces that Guangzhou Wanda Plaza Investment Co., Ltd. uses Acrel-2000 power monitoring system to monitor the project's power transmission and distribution system; the instrument uploads data to the back-end and conducts intelligent networking through the bus-type networking method. The system realizes the intelligent, digital, and networked power distribution monitoring of distributed acquisition and centralized control management. Acrel-2000 power monitoring system, as the platform subsystem of Guangzhou Wanda Huiyun intelligent management system, uploads operation data to Huiyun platform while shouldering the tasks of power distribution and monitoring, and realizes system resource integration.

Keywords :transformation and distribution; power monitoring; Wanda Plaza; Huiyun Platform

0 Project Overview

Guangzhou Wanda Plaza power monitoring system is designed based on the requirements of the medium-distance power distribution monitoring subsystem requirements of the “Wanda Plaza Huiyun Intelligent Management System Design Standard (2015 Edition)” to transform the project transformation and distribution system.

According to "Guangzhou Baiyun Wanda" one-click "reconstruction assessment report" to determine the scope of this project monitoring: B District Center Phase I high voltage power distribution room 8 MPR-2013 comprehensive protection, 2 MPR-2015 comprehensive protection, 2 RCU- 202A DC screen controller; Supermarket high voltage power distribution room 1 MPR-2013 comprehensive protection, 2 MPR-2026 comprehensive protection, 1 RCU-201 DC screen controller; 1 high-voltage power distribution room 1 MPR-2013 comprehensive protection, 6 MPR-2026 comprehensive protection, 1 RCU-202A DC screen controller; 1 high-voltage power distribution room MPR-2013 comprehensive protection, 4 MPR-2026 comprehensive protection, 1 RCU-202A DC screen controller; diesel Generator Room 3 MRS16 Generator Controllers; Property #1-#6 Special 6 LD-B10-10FP(B) Transformer Temperature Controllers, 6 WHD90R-11/CD Temperature & Humidity Controllers; Supermarket #1-# 2 special 2 sets of LD-B10-10FP(B) transformer temperature controller, 2 sets of WHD90R-11/CD temperature and humidity controller; department stores #1-#4 special 4 sets of LD-B10-10FP(B) transformer temperature Controller, 4 WHD90R-11/CD temperature and humidity controllers.

1 User needs

1.1 General provisions

1) The monitoring range of the power monitoring system includes: monitoring of high-voltage input/output line operation parameters, monitoring of low-voltage power distribution operation parameters, monitoring of standby voltage operation, and monitoring of operation parameters of variable-voltage motor houses.

2) The power monitoring system should meet the requirements for convenient and practical business management. Including: ensure that all monitoring and control systems of the power distribution equipment are integrated on one platform; adopt a unified operation interface; provide clear management information. And provide remote access capabilities.

3) The power monitoring system should meet the business management security management requirements. Including: centralized monitoring of all alarm information, centralized display of the operating status of important equipment; so that managers can pass through the integrated platform to remotely check and monitor the situation of each mechanical and electrical equipment.

1.2 Functional requirements

1.2.1 Monitoring function

1) The operating parameters of the high-voltage inlet and outlet lines should be monitored, including current, voltage, active power, reactive power, and apparent power.

2) DC screen operation parameters should be monitored: output voltage, cumulative charge and discharge times, charge voltage, charge and discharge status, and battery temperature.

3) Transformer operating parameters should be monitored: core coil temperature, cooling fan start and stop status.

4) The air temperature of the transformer's environment should be monitored.

5) Operating parameters of the diesel generator incoming line: generator terminal voltage, current, frequency, starting battery voltage, diesel cooling water temperature.

1.2.2 Fault alarm function

1) DC screen: abnormal voltage.

2) High-voltage cabinet: Overcurrent (load), low voltage, short circuit, and grounding of high-voltage inlet and outlet lines.

3) Transformer: Transformer high temperature, ultra high temperature

4) Generator main: Failed to start, unable to synchronize, and short circuit; diesel generator working fault alarm, daily fuel tank oil level display and ultra-high and ultra-low alarm.

1.2.3 recording function

1) The above-mentioned operating parameters that need to be monitored and the technical parameters in the switch state should be recorded for analysis and comparison.

2) The contents and time of occurrence of the above failure alarms shall be recorded.

1.3 Software and Hardware Requirements for Power Monitoring System

The software and hardware standards of the power monitoring system should meet the Wanda Plaza BA system design standard requirements, in addition to the following requirements:

1.3.1 The hardware of the power monitoring system should include at least one server. The network connection with the "Huiyun intelligent management system" control system is shown in Figure 1_1.

Figure 1_1 Hardware connection of the power distribution subsystem

1.3.2 The power monitoring system shall provide a human-computer interaction interface (shared with the energy management platform). The subsystem human interface can be designed in accordance with the interface design requirements, so that the subsystem interface is consistent with the "huiyun intelligent management system" centralized monitoring system interface; also can be designed to achieve the function design of the monitoring, fault alarm and operation monitoring function .

1.3.3 The software of the power monitoring system should have a database function to implement various recording functions in the function design.

1.3.4 The software of the power monitoring system should have the authority management function.

1.4 Data Exchange Requirements Between Power Monitoring System and Huiyun Platform

1.4.1 The power monitoring system should use standard communication protocols and interfaces. The subsystem should open up the layers of communication protocols of its equipment. Should use self-monitoring power conversion equipment (units). It is required that each transformer and distribution unit automatically measure various information in the functional design.

1.4.2 The power monitoring system shall provide data for monitoring and recording the functional requirements in the functional design of the Huiyun Intelligent Management System centralized control system, including the start-stop status of the electromechanical equipment, system operating parameters, fault alarm parameters, and energy consumption. Data parameters.

2 Design Principles Reference Standards

2.1 Design Principles

1) Openness: The system will involve different vendors' equipment technologies and system expansion requirements. In this project's product technology selection, proprietary technologies are avoided so that the system's hardware and software platforms are fully open. Sex.

2) Advanced: System software and hardware platform construction, application system design and development, and system maintenance and management adopt product technologies that take into account current technological development trends, adopt relatively advanced and relatively mature market technologies to meet the future of the system. The development needs.

3) High performance: The system design should be comprehensively analyzed from the perspectives of server processing capabilities, network bandwidth transmission capabilities, and software system efficiency. The structure should be rationally designed to allow the system to have sufficient processing capabilities to meet the needs of large quantities of data processing and user access. System service quality.

4) Security: The system attaches great importance to security issues. From the operating system layer, network layer, and application layer, each layer has corresponding measures to address transmission security, system security, and information security requirements.

5) Reliability: The system should be comprehensively considered from the aspects of system structure, network structure, technical measures, equipment selection, etc. to ensure that there is no single fault node in the system and achieve 7X24 uninterrupted service.

6) Extensibility: In this system, the design of all networks, servers, storage, and application software follows an extensible principle in order to achieve expansion with the development of demand. The system adopts a modular structure, has good compatibility and scalability, and enables different vendors' devices and systems to be integrated into the same platform. In addition, the system can be easily expanded according to user needs in the future.

2.2 Reference Standards

1) "Wanda Plaza Huiyun Intelligent Management System Design Standard (2015 Edition)"

2) ISO/IEC 11801 International Integrated Cabling Standard

3) GB/50198 Technical Specification for Monitoring System Engineering

4) GB50052-2009 "Design Specification for Power Supply and Distribution System"

5) GB50054-2011 "Low Voltage Distribution Design Specification"

6) DL/T 698.1-2009 "Part 1: General"

7) DL/T 698.2-2010 Part 2: Main Station Technical Specifications

8) DL/T 698.31-2010 "Section 3.1: Technical specifications of energy information collection terminals - General requirements"

9) DL/T 698.35-2010 "Part 3-5: Technical specifications of energy information collection terminals - Particular requirements for low-voltage centralized meter reading terminals"

10) DL/T 698.41-2010 "Section 4-1: Communication Protocol - Communication between Master and Power Information Collection Terminals"

11) DL/T 698.42-2010 "Part 4-2: Communication Protocol - Concentrator Downlink Communication Protocol"

12) DL/T 698.41-2010 "Section 4-1: Communication Protocol - Communication between Master and Power Information Collection Terminals"

13) DL/T 698.42-2010 "Part 4-2: Communication Protocol - Concentrator Downlink Communication Protocol"

3 Solution

Guangzhou Wanda Plaza power monitoring system adopts a hierarchical and distributed structure for design, namely, field device layer, network communication layer and station control management layer.

3.1 Field device layer

Field equipment layer instrument mainly includes: comprehensive protection, DC screen controller, generator controller, transformer temperature controller, temperature and humidity controller.

3.2 Network Communication Layer

Communication medium: The instrument adopts shielded twisted pair to connect to the serial port server through RS485 field bus. The serial port server converts the collected information of the interval layer device into Ethernet, and accesses the host of the power monitoring system. Ethernet uses optical fiber transmission.

3.3 Station Control Management

The station management layer is the management personnel of the distribution network, and this layer directly faces the users. This layer is also the uppermost part of the system, which is mainly composed of power system software and necessary hardware devices such as computers, printers, and UPS. The software part has a good human-computer interaction interface. It reads the various data information collected by the front-end machine through the data transmission protocol, and is automatically calculated and processed to reflect the operation status of the site by means of graphics, digital display, and sound. Accept the operation command of the management personnel, send and detect the execution status of the operation in real time to ensure the normal operation of the power supply unit; the power metering management function is designed in accordance with the user's report format, and the data in the report is strictly measured according to various standards. Users only need to find and print, which greatly facilitates operation and improves work efficiency. The system topology is as follows:

4 system function

1) Data collection and display: The distribution of distribution lines is visualized in the form of a primary trunk line diagram. At the same time, the operational parameters of each equipment collected in real time, as well as the switch-off and closing status of the distribution circuit, are displayed in real time.

2) Data records: The above-mentioned operating parameters that need to be monitored should be recorded for analysis and comparison.

3) Alarm management: The system has the function of remote alarm configuration. The alarm types include telemetry and remote alarm. When the system alarms, information voice prompts can be performed and an alarm screen will pop up automatically. Telemetry Alarm Query: Acrel-2000 power monitoring system can store remote alarm and telemetry alarm data, which is convenient for users to retroactively query system alarm events.

4) User Rights Management: In order to ensure the safe and stable operation of the system, the system has set up user rights management functions. User rights management prevents unauthorized operations. You can define login names, passwords, and operation rights for users at different levels to provide reliable security for system operation and maintenance.

5) Data forwarding function: Upload the collected data to Huiyun platform using MODBUS-TCP protocol.

5 Concluding remarks

With the increasing demand for intelligent management of variable-end power distribution at the customer end, the application of power monitoring systems has become a development trend. The application of Acrel-2000 power monitoring system introduced in this article in Guangzhou Wanda Plaza project realized the real-time monitoring of Guangzhou Wanda Plaza's power distribution system and realized data sharing with the upper Huiyun platform. The system analyzes and processes the collected data, displays the running status and alarm status of each monitoring device in real time, and generates various reports, analysis curves, and graphics, which facilitates the management and operation maintenance of the device. The system is safe, reliable and stable, providing scientific basis for the maintenance of power systems and equipment in the later period and the formulation of energy-saving measures.

references

[1]. Ren Cheng, Zhou Zhongzhong. Principles and Application Guide for Digital Meters for Electric Power Measurement [M]. Beijing. China Electric Power Press, 2007. 4

[2].Zhou Zhong. Application of Electric Power Meters in Energy Metering of Large-scale Public Buildings [J]. Modern Building Electric 2010. 6

About the author: Dai Jinhua, female, undergraduate, Jiangsu Ankerui Electric Manufacturing Co., Ltd., the main research direction for intelligent building supply and distribution monitoring system. QQ mobile phone fax website: http://