This paper analyzes the practical application of the power supply monitoring system of Ankerui fire-fighting equipment in the project of No.1 and 2# buildings in Guangxin Dongyuan Community, analyzes the national standards and design basis of this system, and expounds the composition of the power monitoring system of fire-fighting equipment. The realization of the function and its significance.
Yang Junjun An Kerui Electric Co., Ltd. Shanghai Jiading
0 Overview
Guangxing Dongyuan Community is located at No.53 Hezhou Avenue, Babu District, Hezhou City, Guangxi Province. The project consists of two 18-storey commercial and residential buildings, with one to four floors for commercial use and five to eight floors for residential use.
Because it is a commercial and residential building, the personnel are relatively dense. In order to ensure that the fire-fighting equipment can be put into operation in the first time after the fire, so that the loss of life and property caused by the fire is minimized, reliable power supply of the fire-fighting equipment is crucial.
There are several characteristics of fire equipment power supply: low probability of use and long-term idleness, but once it has to be used, it must be able to function. Therefore, always maintain the power supply of fire-fighting equipment.
According to the intelligent management requirements, through the monitoring system consisting of the fire equipment power monitoring module and the monitoring host, the whole process of the fire power supply of the two buildings is continuously monitored, centralizedly controlled and unified.
1 reference standard
In recent years, in order to prevent fire-fighting equipment from being used properly during the fire, the state has successively formulated or revised a number of relevant standard specifications to strengthen the monitoring of fire-fighting equipment. There are:
1.1. GB25506-2010 "General technical requirements for fire control room", in the provisions of 5.7 fire power monitors should meet the following requirements:
a) It should be able to display the working status and fault alarm information of the power supply and backup power of the fire-fighting equipment.
b) It shall be able to transmit the working status and undervoltage alarm information of the power supply and backup power of the fire-fighting equipment to the fire control room graphic display device.
1.2. GB 28184-2011 "Fire Equipment Power Monitoring System"
1.3. GB 50116-2013 "Fire Automatic Alarm System Design Specification"
2 system components
The project is connected to a communication bus, and the AFPM series fire equipment power monitoring detector installed in the power supply box of the basement and floor fire-fighting equipment is directly connected to the wall-mounted background. The AFPM100 fire equipment power monitoring system uses a two-layer structure networking mode of the fire equipment power status monitor + voltage / current sensor. The whole monitoring system is comprehensive in function, safe and reliable, accurate in detection and cost-effective. The system uses RS485 network communication internally and provides Modbus-RTU communication protocol to meet the connection of other standard systems. The above-mentioned set of signals is stable and accurate. Fire equipment power monitoring system.
AFPM100 fire equipment power monitoring system is a computer monitoring and control system independently developed by Ankerui. It is suitable for intelligent buildings, high-rise apartments, hotels, restaurants, commercial buildings, industrial and mining enterprises, national key fire protection. Units and monitoring and management of fire equipment power supplies in petrochemical, cultural and educational health, finance, telecommunications and other fields.
The AFPM100 fire equipment power monitoring system can monitor the power of the fire equipment in real time. By detecting the voltage, current, switch status and other related information of the fire equipment power supply, it can determine whether the fire equipment power supply has open circuit, short circuit, over voltage, under voltage, Fault information such as phase loss, phase error, and overcurrent (overload) are alarmed and recorded. Through the friendly human-computer interaction interface, the status of the power of the monitored equipment is reflected in real time and displayed in a centralized manner, thereby effectively avoiding the critical situation that the fire-fighting equipment cannot work normally due to the power failure during the fire, and the protection of the fire-fighting linkage system is maximized. reliability.
The device has reasonable structure, high reliability, strong function, convenient maintenance, high cost performance, and the system interface is intuitive and easy to use.
The system structure topology is as follows:
System configuration diagram
System power supply schematic
3 fire equipment power equipment
3.1, AFPM100 fire equipment power supply background:
The main technical parameters
power supply
â—Main power supply: AC220V 50Hz (allows 85%-110% range change)
â—Alternate power supply: When the main power supply is low voltage or power failure, maintain the monitoring equipment working time ≥8h
â— Monitor provides DC24V power supply for connected modules (voltage/current signal sensors)
Work system: 24-hour work system
communication method
Modbus-RTU communication protocol, RS485 half-duplex bus mode, transmission distance of 500m (if it exceeds the transmission distance through the repeater).
Monitoring capacity ≤ 128 points
Operational rating
1 Daily duty class: real-time status monitoring, history query.
2 Monitoring operation level: real-time status monitoring, history query, remote reset of detector.
3 System management level: real-time status monitoring, history query, remote reset of detectors, remote modification of detector parameters, system parameter setting and modification of monitoring equipment, operator addition and deletion.
Environmental conditions
1 Workplace: Fire control room, or installed side by side with fire control console
2 Working environment temperature: -10 ° C ~ +55 ° C
3 Working environment relative humidity: ≤95% no condensation
4 Altitude: ≤2500m
5 Pollution degree: Class III, installation category: Level III
3.2, AFPM100 series instruments
3.2.1. Real-time monitoring of two three-phase voltages;
3.2.2, with overvoltage, undervoltage, phase loss, phase error, overcurrent (only with current detection products) alarm;
3.2.3, provide one or two channels (only monitor two-way three-phase AC voltage products) switch input function, can monitor the switch state; (see module selection for details)
3.2.4. Provide one relay output, which can be connected to the alarm control loop;
3.2.5. With event storage function, the alarm can record the time, type and parameter of the alarm occurrence. According to the alarm record, the situation can be analyzed to provide a basis for eliminating the fault;
3.2.6. Using fieldbus communication technology, the host computer management software can monitor the operation of the site at all times and timely discover the alarm information. The standard MODBUS protocol can be connected to various standard systems via the RS485 interface;
3.2.7, high integration, network, high degree of intelligence, reasonable operating characteristics;
4 system function
4.1, monitoring alarm function
â— monitored equipment power loop switch status
â—The working state of the monitored equipment power supply (voltage, current and alarm status information)
◠Alarm response time: ≤100s
â—Alarm sound signal: It can be manually eliminated. When there is an alarm signal input again, it can be started again.
â—Alarm light signal: red LED indicator is always on
4.2, control output function
â— Remote remote operation of alarm relays of individual or all monitored equipment
â— Monitor control output: normally open passive contact, capacity: AC250V 3A or DC30V 3A
4.3, fault alarm function
â— The connection between the monitor and the module (voltage/current signal sensor) is open and shorted.
◠Monitor mains undervoltage (≤80% mains voltage) or overvoltage (≥110% mains voltage)
â—The connection between the monitor and its separate power supply is open and shorted.
â— When the above fault occurs in the monitor, it can emit an acousto-optic fault alarm signal that is significantly different from the monitoring alarm signal.
◠Fault alarm response time: ≤100s
â—Fault alarm sound signal: manual elimination, when there is an alarm signal input again, it can be started again
â— Fault alarm light signal: yellow LED indicator is always on
â— During the fault, the normal operation of the non-faulty loop is not affected.
4.4, self-test function
â—Connection check: open circuit and short circuit of communication line and split power line
â— Equipment self-test: manual inspection or system self-test
◠Self-testing time: ≤60s
4.5, alarm record function
â— Record 10000 related fault alarm information
â—Alarm type: fault type, time of occurrence, fault description
â—Alarm event query
â—Alarm record printing
4.6, printing function
The monitoring system can print Chinese characters and print alarm events and time, fault events and time.
4.7, silence
In the event of an alarm such as an alarm or a fault, the speaker of the monitoring device will give a corresponding alarm sound to prompt, press the “mute†button to terminate the alarm, and the alarm light will be green. During the period, the staff can handle the faults. Everything returned to normal and the alarm light went out. If a new fault occurs, the silence indicator will turn off and the speaker will sound an alarm again.
5 Conclusion
As a kind of pre-alarm system, the fire-fighting equipment power monitoring system has the advantage of alarming the power failure of the fire-fighting equipment in advance to prevent the fire-fighting equipment from being used normally when the fire occurs. Once the fire-fighting equipment power monitoring system is put into use, it will effectively reduce the incidence of abnormal use of fire-fighting equipment, scientific management of the entire building safety, and reduce the risk of fire to the lives and property of personnel in the building. Social and economic benefits.
references
[1]. Ren Zhicheng Zhou Zhong. Principles and Application Guidelines of Power Electrical Measurement Digital Instrumentation [M]. Beijing. China Electric Power Press. 2007. 4
[2]. Zhou Zhong. Application of power meter in electric energy metering of large public buildings [J]. Modern Building Electric 2010. 6
About the Author:
Yang Junjun, female, undergraduate. Position: Now working for Ankerui Electric Co., Ltd., contact number, mobile phone, QQ
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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