RU64442U1 - SYSTEM OF DISTRIBUTED DATA COLLECTION, CONTROL AND METERING OF ELECTRIC POWER - Google Patents

Abstract

The utility model relates to the field of distribution, control and accounting of electricity consumption in energy systems. A distributed data collection, control and accounting system for electricity, including a control room and at least two interface cables for communication modules located in remote controlled locations, containing electricity meters with an RS-485 interface and forming a single information network based on the electricity meter protocol. The interface cable of the communication module of each remote controlled point is equipped with an element matching more than two RS-232 interfaces connected in parallel and providing communication between the remote controlled point and the control center via service radio relay communication channels. The system allows to reduce costs and simplify the technical support of information transfer in distributed data collection, control and electricity metering systems through the use of existing service radio relay communication channels. 2 of FIG.

Description

The utility model relates to the field of distribution, control and accounting of electricity consumption in energy systems.

The specifics of the electricity market is currently raising the issue.

providing operational control over energy consumption by both energy supplying organizations and the consumer. The current state of technology development allows us to talk about the possibility of creating a global energy accounting system.

ASKUE (automated systems for monitoring and accounting for electricity) are known for collecting information on the consumption of electricity in controlled points (KP) of metering from electric meters.

The systems provide for the collection of data and the transmission of information corresponding to energy consumption in data collection and transmission devices (DTDs) of control centers (DP).

ASKUE of the production association “Cone”, Ukraine [1] is a distributed system of software components. The system consists of a communication module located in the control room and communication modules located in the remote control rooms. The control room and controlled points are part of a single information network based on the TCP / IP protocol. Each of the communication modules KP establishes a connection with the control room and

transmits measurement results. The control commands are transmitted from the SCADA system, through the communication module to the CP.

Donetsk Engineering Group CJSC together with New View Web Studio developed the PowerMaster system. [2]

PowerMaster provides the concentration of information from primary ASKUE enterprises, its processing, storage and the issuance of resulting reports to automated users via the WEB interface. At the same time, the NV PowerMaster Internet server collects primary information and serves requests through the global network.

The closest analogue of the utility model (prototype) is a system of distributed data collection, control and accounting of electricity from the Ivanovo Energy Company [З]. This system provides the collection of information about the energy consumption at controlled points and metering channels from electric meters of the type ЦЭ6823М and ЦЭ6850, having an RS-485 interface, transmitting information corresponding to power consumption via dedicated communication lines to the DP and transmitting information via a digital RS-232 C interface to base stations at a controlled facility.

The use of this system of dedicated communication lines for data transfer between DP and KP requires rather large economic costs and rather complicated technical support.

The objective of this utility model is to significantly reduce economic costs and simplify the technical support of information transfer in distributed data collection, control and electricity metering systems through the use of existing service radio relay communication channels.

For this, a system of distributed data collection, control and metering of electricity is proposed that includes a control room and at least two interface cables of communication modules located in remote controlled locations containing electric meters with an RS-485 interface and forming a single information network based on the protocol electric meters. The interface cable of the communication module of each remote controlled point is equipped with an element matching more than two RS-232 interfaces connected in parallel and providing communication

a remote controlled point with a control center on official radio-relay communication channels.

The interface cable is used to convert the RS-485 interface of the meter into the RS-232 interface of a transmitting digital radio relay station (CRRS). This is necessary for the coordination of exchange protocols between the electricity meter and the communication CRM, thereby ensuring their interconnection. The relationship between the CP is built according to a combined scheme (beam and sequential) and for those CPs that are not finite, several CRRS communications (at least two) are established. On such gearboxes, it is necessary to carry out the interconnection between several CRRS communications with an interface cable via the RS-232 interface. The RS-232 interface is serial and provides a connection on a single port of not more than two devices, and you must connect at least three devices CRRS communication. This problem is solved by the element that ensures the coordination of three or more devices via the RS-232 interface, which allows us to ensure the relationship between the base gearbox and the auxiliary transformer via service radio relay communication channels that do not interfere with the normal operation of service channels. A utility model is illustrated in the drawings.

Figure 1 shows the structural diagram of the connection between the remote KP and DP. Figure 2 shows a schematic diagram of a remote gearbox.

A distributed data collection system operates as follows. The communication system DP with remote KP is a beam and sequential (Figure 1). From the control point 1, a signal / request is sent to any of the remote control points 2-12 through the communication CRRS DP with the RS-232 interface through the service radio relay communication channel. Each of the KP contains an electric meter 13 (Figure 2), an interface cable 14, communication CRRS 15 and a matching element 16. On those CPs that are not final, several communication CRMS are installed (at least two). The signal / request arrives at the communication DPC 15 and through the matching element 16 enters the interface cable 14. The interface cable 14 converts the RS-232 interface of the communication DPC 15 to the RS-485 interface of the electric meter, and the received signal goes to the electric meter 13. The matching element 16 provides coordination three or more devices on the RS-232 interface, which allows to provide

parallel operation of two or more CRRS communications 15 having an RS-232 interface and installed on any of the remote control units.

The matching element 16 is a set of passive elements selected in such a way that eliminates the mixing / superposition of signals via the RS-232 interface from each of the parallel coupled CRRS communications and consists of diodes, the number of which is determined by the number of receiving pasolinki and one resistor. The resistor is connected in series to the RS232 (+) Rx signal circuit between the interface cable and the transmitting beacon. Each of the diodes is connected in series, by the anode in the RS232 (+) Rx circuit of the transmitting pasolinka, by the cathode in the RS232 (+) Tx circuit of each of the receiving pasolinki. RS232 (+) Rx of each of the receiving pasolinki are interconnected and connected to the RS232 (+) Tx of the transmitting pasolinka. The RS232 (+) Tx interface cable is connected to the RS232 (+) Tx transmitting pasolinka.

This inclusion of diodes provides the isolation of transmitters receiving pasolinki. Otherwise, they will work for each other.

The signal / response from the electric meter 13 is fed to the interface cable 14, which is converted to the RS-232 interface and then through the matching element 16 and the communication CRMS 15 is fed to the DP through the service radio relay communication channel.

Information sources:

1. Production Association "Cone". System of distributed data collection and transmission of telecontrol commands. http://konus.biz/static/4/5/index/htm

2. NV PowerMaster. Energy Management Solution. http://nv.com.ua/solutions/typical solutions / energy.html

3. ASKUE. Automated control and metering systems. http://www.ivec.ru/services/askue.shtml

Claims (1)

A system for distributed data collection, control and metering of electricity, including a control room and at least two interface cables, communication modules located in remote controlled locations containing electricity meters with an RS-485 interface and forming a single information network based on the electricity meter protocol , characterized in that the interface cable of the communication module of each remote controlled point is equipped with an element matching more than two parallel RS-232 interfaces and providing communicating remotely controlled point with the control station on official radio relay channels.