The design of the automatic metering system of heat energy in an apartment building
Our design company has developed the working documentation for the automated control system for automated heat metering in the apartment building.
DESIGN
Working documentation of the section "Automated system of heat consumption accounting and control" (ASTC) on the basis of the pulsar recorder "Pulsar" Residential complex with underground parking, renovation of office buildings with changes in functionality for housing at the address: Moscow, Central Administrative District, Yakimanka district. Additional initial data for the development of working documentation section "IASKUE" are: Architectural and planning solution of the building. Task from the developers of the section "Heating and Ventilation".
1. General information of the project.
1.1. The main purpose of the designed system of the control system.
The main purpose of the control system is:
- automated commercial and technological accounting of heat consumption;
- registration of parameters for collecting, accumulating, processing, displaying information on energy consumption;
- transfer of accumulated information on energy consumption to dispatching and settlement centers;
- energy conservation and consumption management.
1.2. The hierarchy and degree of centralization of the control system.
The control system is implemented as a distributed multi-level information-measuring system with centralized control and a distributed measurement function.
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First level system
Heat meters M- Cal , corresponding to GOST R EN1434-1-2006, equipped with a pulse output.
Second level system
Pulse counters - Pulsar recorders (State Register No. 25951-03) are secondary devices, each of which connects up to ten (for Pulieer-H)) and up to sixteen (for Pulsar-16) counters with pulse output. Pulse counters - Pulsar recorders are used to accumulate a number of impulse information from primary counters with reference to astronomical time and transmit data in digital format to a home recorder (RS-485 standard).
1.2.3. Third level system
House recorder - a device for collecting and transmitting data from the Data Collection and Transmission Device "Pulsar" provides for the collection, storage and transmission of information on water consumption to the upper level, as well as synchronization of metering devices.
1.2.4. Fourth level system
Personal computer - as a workplace operator.
1.2.5. Auxiliary devices of the system.
Converters, repeaters, modems, power supplies
1.3. Organization ASUT.
Heat meters are connected to pulse counters - Pulsar recorders. The transmission of measurement information to a computer is carried out via the RS-485 standard via switched (using a modem) and non-switched (using a USPD) wire communication lines, as well as via a GSM channel using a GSM modem.
In case the number of pulse counters in the network exceeds 128, and also if the length of communication lines between pulse counters -registrars exceeds 1200m, 485/485 repeaters are used, amplifying the signal.
1.4. ASUT functions.
maintaining a database of resource consumption on a PC;
preparation of analytical information, reports, protocols, graphs for subsequent printing; issuing invoices to subscribers to pay for consumed energy; informing consumers about the status of payment and resource consumption; the reduction of the in-object balance of energy resources in order to identify foci of unauthorized consumption;
• hourly saving of data on resource consumption in non-volatile memory;
• protection of information from unauthorized access.
2. Technical solutions for designing IASKUE.
2.1. Automation equipment.
The project provides:
• Pulsar pulse recorder and Pulsar pulse generator recorder manufactured by NLP Teplovodohran are used as instruments of an automated measuring system for monitoring and metering heat consumption;
• The IP15-60 power supply unit (15V, 4A) is used as an auxiliary device for the automated control and automation system.
2.2. Technical characteristics of ASUT.
Technical characteristics of the pulse counter -registrator "Pulsar-10" ("Pulsar-16"):
- number of input channels: 10 (16);
- type of pulse sensor: reed, transistor or active (potential);
- input frequency, Hz, not more: 200;
- external supply voltage required for interface operation: 7-20V;
- archive depth: hourly-1080, daily-180, monthly-24 months;
- the accuracy of the internal clock: 0.01%;
- limit of the relative error of measuring the number of pulses: 0.1%;
- operating temperature: -10 ° + 50 °;
- average service life: at least 12 years;
- battery life: not less than 12 years.
23 . Parameters of programming of means of automated control system.
The system programming parameters are summarized in the parameterization tables. The parameters are programmed by the organization that makes the installation of the control system using the program "IASKUE Pulsar". The collection of readings from the counters, their archives and the generation of reports of various types are carried out using the IASKUE Pulsar program.
3. Technical solutions for installation of automated control system.
Installation work of the information part to produce in the absence of voltage in the network.
For installation of the system, use the power cable of the IlBCm (A) -LS 2x1 interface and the information wire of the KVP EF interface ne (A) -LS-5e 1x2x0.52. Wires PVSNG (A) -8 and 2x1 KVP EF hz (A) -LS-5 e 1x2x0,52 to stretch in a low-voltage riser from the upper floor to the parking lot, wiring along the parking lot to the Data Acquisition and Transmission Control Department , to the heat metering station of the NB 1.3 building and installation site USPD see. CJ-RD-04-05-ASUT. Broach wires in the interfloor span to implement through mortgage sleeves, which are installed during the construction of the house on the project CC1.
Pulse counters-recorders "Pulsar" for apartments should be installed in the compartment of the automated system for commercial accounting of utility services in technical rooms and fixed to a din-rail. The type of counters of impulses-registrars in the floor board should be set according to the structural scheme of the project. The power cable of the nBCm (A) -LS 2x1 interface (counter contacts 11 (15) and 12 (16)), the information wire of the KVP EF hz (A) -LS-5 interface e 1x2x0.52 (counter contacts 9 (13) and 10 (14)) pulse counters - register in parallel.
From the heat meters of each consumer to the pulse counters to the Pulsar recorders, lay the KVP EF m (A) -LS-5e 1x2x0.52 wire. (l (+ 0 ^ 2
Connect the wires from the heat meters to the KVP EF ng (A) -YZ-5 e 1x2x0.52 wire through the terminal box (KK) and then connect to the pulse recorder (counter contacts +1,3,5,7 (1,3,5, 7,9,11) and -2,4,6,8 (2,4,6,8,10,12) according to the wiring diagram.
After installation, the pulse counters - the Pulsar recorders must be programmed.
4. Technical solutions for commissioning the ASHASKUE system.
The software included in the system performs the following functions:
- interrogation of pulse counters - recorders "Pulsar";
- control of communication lines with meters;
- maintenance of resource consumption database;
- providing the ability to view information on the consumption of resources;
- preparation of reports, protocols, graphs for subsequent printing;
- issuing invoices to subscribers to pay for consumed energy.
Interrogation of pulsar pulse recorders "Pulsar" is possible only in the case of the presence of an external supply voltage of the interface part. In the case of the absence of external power, the pulse counters — the recorders continue to perform their main function — the registration of information on resource consumption.
To run the software you need to IBM- compatible computer with the operating system -Windows XP OffisXP.
5. Requirements for safety when installing an automated system of automated control systems.
Before operating, it is necessary to familiarize yourself with the operational documentation for meters.
The installation, maintenance and repair of meters are allowed to persons who have been instructed in safety and have a qualification group in electrical safety not lower than W for electrical installations up to 1000V.
When working in conjunction with the installation of meters, the requirements of GOST 12.2.007.0 and the “Rules for technical operation of electrical installations of consumers and right-handed safety measures in the operation of electrical installations of consumers” approved by Rostechnadzor must be observed.