Application of power monitoring system in B18-1 plot project of Jiading New Town

Ren Yunye Ankerui Electric Co.
, Ltd.
, Shanghai Jiading 201801; Abstract: Based on the current rapid development of science and technology, people's dependence on power resources is becoming more and more extensive, and the operating costs of the domestic power system are still relatively high at this stage, so it is imperative to improve all aspects of the power system
.
Power monitoring system has an important role in the entire power system, it can effectively promote the efficiency of power grid management, reduce the operating costs of the power system, this paper through the application in Jiading New City B18-1 plot project and then introduce the application
of power monitoring system in the actual commercial field.
Keywords: Jiading New Town; Power monitoring system; Acrel-2000； 1 Introduction Distribution automation is an integrated information management system integrating computer technology, data transmission technology, control technology, modern equipment and management
.
Its purpose is to improve the reliability of power supply, improve the quality of power supply, provide services to users, reduce operating costs, and reduce the labor intensity of operators
.
With the continuous development of the power network, the continuous growth of the electricity load, and the emergence of various new loads, users are more concerned about the quality of power energy, and at the same time, more stringent requirements
are put forward for power quality.
Users need more effective power monitoring and management solutions to meet the challenges posed by these changes in order to achieve the continuous reliable, efficient and low-consumption operation
of power distribution systems.
This paper introduces the application
of power monitoring system in the commercial field through the construction of the power monitoring system in the B18-1 plot project of Jiading New City.
2 The power monitoring system is designed according to GB50052-2009 "Power Supply and Distribution System Design Code" GB50053-2013 "20KV and below Substation Design Code" GB50054-2011 "Low Voltage Distribution Design Code" GB50059-2011 "35-110 KV Substation Design Technical Specification" GB50060-2008 "3~110kV High Voltage Distribution Device Design Code" GB/T50062-2008 《 Design Code for Relay Protection and Automatic Devices of Electric Power Devices GB/T50063-2017 Design Code for Electric Measuring Instruments and Devices for Electric Power Installations IEC61587-2016 "Mechanical Structure Series of Electronic Equipment" DL/T5103-2012 "35-110 KV Unmanned Substation Design Regulations" DL/T5136-2012 "Technical Regulations on the Design of Secondary Wiring of Thermal Power Plants and Substations" GB50229-2019 Fire Protection Standard for Design of Thermal Power Plants and Substations GB6162-1985 "Electrical Interference Test of Static Relays and Protection Devices" DL/T587-2016 "Relay Protection and Safety Automatic Device Operation Management Procedures" GB14285-2006 "Relay Protection and Safety Automatic Device Technical Regulations" GB/T15145-2017 "General Technical Conditions for Microcomputer Line Protection Devices" GB7261-2016 "Basic Test Methods for Relay Protection and Safety Automatic Devices" DL/T720-2013 "Power System Relay Protection and Safety Automatic Device Cabinet (Screen) General Technical Conditions" 3 Project Overview Jiading New Town B18-1A plot commercial project is located in No
.
969, Tianzhu Road, Jiading New Town, Shanghai, the project user station is 10KV/0.
4KV substation, respectively, located in the 1F substation and the underground substation 。 The user station has a total of T1, T2, T3, T4 four transformers, transformer capacity of 1600KVA, four input cabinets, four road compensation cabinets, two contact cabinets, 25 ways feeder cabinet, according to the Shanghai sub-metering upload requirements, the energy needs to be uploaded to the differentiated metering platform
.
4 Power monitoring system design In the design of the monitoring system, it is necessary to fully consider the actual needs of customers, as well as the actual structure of the power system, the actual load capacity of the power system and other factors, and then reasonably select the monitoring equipment, which is conducive to reducing the cost of system operation, but also conducive to the realization
of system functions.
The power monitoring system of this project can realize the real-time monitoring of the high and distribution circuits in the station, which is conducive to power management
.
On the other hand, the power monitoring system can not only accurately express the power consumption status of the loop, it also has network communication and other functions, can be combined with computers, serial server and other equipment, timely display the operation status of each distribution circuit in the station, when the load of the power system in the station exceeds the standard, the power monitoring system can quickly alarm and issue voice prompts
。 In addition, the power monitoring system can also generate reports, curves and other statistical information, which is convenient for relevant personnel to analyze the electricity consumption status of various parts of the station, so that the electricity activities in the station are safer, so as to ensure the life safety of the station personnel and improve the work efficiency
of the station staff.
4.
1 The system structure is based on the distribution of power distribution of the substation of the B18-1A plot of Jiading New City, and the construction of the online monitoring system adopts a hierarchical distributed structure, and the system includes: station control management, network communication layer, field equipment layer
.
The system network structure is shown in the figure: the direct window for human-computer interaction between the station control management management personnel and the computer, the calculation, analysis and processing of various types of data and information collected at the site, and the operation status of the scene in the form of graphics, digital displays, and sounds, which is the uppermost part of
the system.
It is mainly composed
of system software and necessary hardware equipment, such as industrial-grade computers, printers, UPS power supplies, etc.
The device used in the communication layer is the ANet-2E8S1 communication management machine
.
This layer is a bridge for data information exchange, responsible for the collection, classification and transmission of data information returned by field devices, and conveying various control commands
of the host computer to field devices.
The field device layer is mainly connected to various types of instruments for electrical parameter acquisition and measurement in the network, and is also a basic component element
necessary for the construction of the power distribution system.
The multi-functional energy meter of Jianpei manufacturer is configured on site to realize the monitoring of three-phase current, three-phase voltage, frequency, power, four-quadrant electric energy and other electrical parameters of the low-voltage loop; The status of each circuit breaker is monitored
.
System structure diagram 5 power monitoring system software function  distribution system real-time monitoring system man-machine interface friendly, in the form of a distribution diagram intuitively display the operating status of the distribution line, real-time monitoring of each circuit voltage, current, power, power factor, power and other electrical parameter information, dynamic monitoring of each distribution circuit circuit breaker, isolating switch, ground knife and other combined and sub-status, as well as related faults, alarms and other signals
.
The curve query power monitoring system can draw the time span of the voltage curve by collecting the voltage parameter (for: days), and the curve graph should be a real-time curve
when the interface is initially entered.
When you set the start time of the curve and click the Refresh Curve button in the interface, the curve should automatically switch to the historical curve, and the trend curve from the start time of the curve to the set time is displayed
.
Through the analysis of the curve, it can be understood whether the distribution voltage is stable and whether it meets the requirements of
voltage fluctuation.
 Run the report query system with real-time power parameters and historical power parameters storage and management functions, all real-time collection of data, sequence event records, etc.
can be saved to the database, in the query interface can be customized to query the parameters, time or select to query the most recently updated record data, etc.
, and through the report way to display it
.
Users can customize the operation of daily newspapers and monthly reports according to their needs, support the export of Excel format files, and can also export PDF format files
according to user requirements.
 Power report query system supports the integrity
of the volume system with rich report body.
The system has the function of timed meter reading summary statistics, and users can freely query the power consumption of each distribution node in any period of time since the normal operation of the system, that is, the statistical analysis report
of the power consumption of the node into the line and the power consumption of each branch loop.
This function makes the electricity consumption visible and transparent, and can be analyzed and traced when the electricity error is large, so as to maintain the correctness
of the metering system.
The communication status diagram system supports real-time monitoring of the communication status of each device in the access system, and can completely display the entire system network structure; It can diagnose the communication status of the device online, and automatically display the faulty device or component and its fault part
on the interface when the network abnormality occurs.
So as to facilitate the operation and maintenance personnel to grasp the communication status of the on-site equipment in real time, timely maintenance of abnormal equipment, to ensure the stable operation
of the system.
6 In summary, the power monitoring system helps power consumption improve efficiency, reduce losses, reduce operating costs, and the power monitoring system can effectively ensure the efficiency of grid management and reduce the operating cost of electricity, which has also become an important part
of the power supply and distribution design.
Power monitoring system communication, fault alarm, data storage records and other functions make the staff in the actual work more convenient, through the man-machine operation interface, directly understand the operation status of the power system, and can quickly transmit the operation instructions, because the monitoring equipment to the data transmission is through the network transmission to achieve
.
Therefore, different power monitoring systems can design different networking methods to ensure that data information can be transmitted
quickly and accurately.
The power monitoring system is set up in commercial areas and other places, which can realize the real-time monitoring of the low-voltage distribution circuit in the station, which is conducive to power management
.
On the other hand, the power monitoring system can not only accurately express the power consumption status of the outgoing loop, it also has network communication and other functions, can be combined with computers, communication gateways and other equipment, timely display the operation status of each distribution circuit in the station, when the load of the power system in the station exceeds the standard, the power monitoring system can quickly alarm, issue voice
。 In addition, the power monitoring system can also generate reports, curves and other statistical information, which is convenient for relevant personnel to analyze the electricity consumption status of each part of the station, so that the electricity activities in the station are safer, so as to ensure the life safety of the personnel in the station and improve the work efficiency
of the staff.
Reference[1] "Principle and Application Guide of Electric Power Measurement Digital Instrument", Ren Zhicheng, Zhou Zhong, China Electric Power Publishing House[2] "Application of Power Monitoring System in Power Supply and Distribution Design", Gao Shihong, Science and Technology Wind Author Profile: Ren Yunye, male, Ankerui Electric Co.
, Ltd.
, the main research direction is smart grid power supply and distribution
.