RU170867U1 - MICROPROCESSOR DEVICE FOR CONTROL OF OUTPUT RELAYS OF PROTECTION AND ALARM, ACCOUNTING, MEASUREMENT AND MONITORING - Google Patents

Abstract

The utility model relates to electrical engineering, namely to the technology of relay protection, automation and metering in the energy sector. The technical result of the utility model is to expand the functionality, increase configuration flexibility and reduce the total cost of control and management systems, relay protection and automation, metering in each switchgear for account for the exclusion of electricity meters at each connection of the switchgear, as well as devices that measure and control the parameters of the electric power network in the form of currents and voltages in a separate RU connections. The technical result is achieved by the fact that the microprocessor control device for the output protection and alarm relays, metering, measurement and control (MCUU), containing a centralized microprocessor control system for the output relay for protection and signaling, metering, measurement and control (CMSU) in the switchgear having a group of inputs and outputs for communication with a computer, and connected to a block of central equipment of communication channels (CACS), according to this utility model, further comprises in series a single centralized measurement unit (CBI), a CBI measurement controller, a CBI monitoring, diagnostics and alarm unit, a CBI programmable read-only memory (ROM), a GSM / GLONASS clock signal receiver, and a communication channel device (UKS), while the CBI connected to the TsAKS unit, the central bank of the pulsed signal generator, the receiver of the exact time signals GSM / GLONASS TsBI, and also to the UKS; 1 ill.

Description

The utility model relates to electrical engineering, namely to the technology of relay protection, automation and metering in the energy sector.

An analogue is a microprocessor-based relay protection and automation device with remote control (patent RU 2222083, IPC Н02Н 7/26, G01R 23/165, G01R 31/08, publication date January 20, 2004), which contains galvanic isolation blocks and preliminary scaling of input signals in the form current and voltage, frequency filter unit, analog-to-digital converter, microprocessor-based control system for output protection relays and alarm in accordance with protection algorithms, transceiver with antenna.

The disadvantages of the analogue are:

- the total high cost of relay protection and automation in all connections of the switchgear (RU) of the electric power installation (EU);

- limited and rigidly installed functionality;

- high complexity and cost of design, survey and installation work during the renovation and reconstruction of power plants in terms of relay protection and automation.

The prototype is a centralized microprocessor-based relay protection and automation system with remote control (patent RU 108231, IPC Н02Н 7/00, publication date 09/10/2011), which contains blocks of galvanic isolation and preliminary scaling of input signals in the form of current and voltage, a block of frequency filters , analog-to-digital converter, microprocessor system (communication microcontroller) for controlling the inputs and outputs of a transceiver of a device for organizing a communication channel, a common centralized microprocessor system control system for output protection and alarm relays, equipment for communication channels of a centralized microprocessor control system for output protection and alarm relays, collecting and transmitting information (telemetry - TI, telealarm system - TS and telecontrol - TU) from transceivers of individual connection devices to a common centralized microprocessor control system protection and alarm relays in accordance with the protection algorithm.

The groups of outputs of the galvanic isolation units and preliminary scaling of the input signals in the form of current and voltage are connected respectively to the first and second group of inputs of the frequency filter unit, the group of outputs of which is connected to the group of inputs of an analog-to-digital converter, the group of inputs and outputs of which are connected to the first group of inputs the outputs of the microprocessor control system of the output protection relays and alarm in accordance with protection algorithms, the second group of inputs and outputs of which is a group of inputs rows outputs for communication with external devices, a third group of inputs-outputs of a microprocessor control system output relays and signaling in accordance with the protection algorithms transceiver group connected inputs-outputs.

The centralized microprocessor control system for the output protection and alarm relays can be located either in the same control room as the protected connections of the control panel, or it can be used as a remote server or workstation (AWS) located, for example, at a control point of an automated dispatch system management of power plants (ASDU EU) or ASDU electric power system (ASDU ES).

The main disadvantage of the prototype is its limited functionality.

This disadvantage of the prototype is due to the fact that its capabilities are limited by the specified functions of relay protection and automation of RU electric power units of various voltage classes, as well as the function of automated process control systems in the electric power industry (ACS E) and ASDU systems.

In addition, the disadvantage of the prototype is the increased total cost, low flexibility of the configurations of a centralized microprocessor relay protection and alarm system.

The objective of the utility model is the development of a microprocessor control device for output relays of protection and alarm, metering, measurement and control of a centralized microprocessor system of relay protection and signaling, metering, measurement and control, with which the disadvantages of the analogue and prototype are eliminated.

The technical result of the utility model is to expand functionality, increase configuration flexibility and reduce the total cost of control and management systems, relay protection and automation, metering in each switchgear by eliminating electricity meters at each switchgear connection, as well as instruments that measure and control the parameters of the electric power networks in the form of currents and voltages in individual RU connections.

The technical result is achieved by the fact that the microprocessor control device for the output relay of protection and signaling, metering, measurement and control (MSUUV), containing a centralized microprocessor control system for the output relay of protection and signaling, metering, measurement and control (CMSU) in a switchgear having a group of inputs -outputs for communication with a computer, and connected to a block of central equipment for communication channels (CACS), according to this utility model, additionally contains series-connected centralization Measurement block (CBI), CBI measurement controller, CBI monitoring, diagnostics and signaling block, CBI programmable read-only memory (CBR), CBI GSM / GLONASS clock signal receiver, and communication channel device (UKS), while the CBI is connected with a TsAKS block, a central bank pulser control module, a GSM / GLONASS central clock signal receiver, and also with a UKS module, and a central bank puller ROM is connected to a TsBI measurement controller.

The essence of the utility model is illustrated in the drawing (Fig. 1).

In FIG. 1 shows an example implementation of a microprocessor control device for output relays of protection and alarm, metering, measurement and control in medium voltage switchgear.

In FIG. 1 marked:

1 - microprocessor control device for the output relay of protection and alarm, metering, measurement and control (IWRM);

2 - communication channels and equipment of communication channels through which telemetry, tele-signaling and telecontrol signals (TI, TS and TU) are received and transmitted between the connection devices and the microprocessor control device for the output relays of protection and alarm, metering, measurement and control of a centralized microprocessor system relay protection and signaling, metering, measurement and control of this switchgear;

3 - a block of central equipment of communication channels of a microprocessor control device for output relays of protection and alarm, metering, measurement and control (CAKS);

4 - computers (laptop, automated workplace of administrative-technical, operational or operational-repair personnel of the electronic control system, ASDU or ASUTP server in the electric power industry);

5 - centralized microprocessor control system for output relays of protection and alarm, metering, measurement and control (CMSU);

6 - a group of inputs and outputs for communication with a computer;

7 - a group of inputs and outputs for communication with a centralized microprocessor control system for output relays of protection and alarm, metering, measurement and control of switchgear;

8 - centralized measurement unit of a microprocessor control device for output relays of protection and alarm, metering, measurement and control (CBI);

9 - the controller of the measurements of the CBI (KI);

10 - control unit, diagnostics and signaling CBI (BKDS);

11 - programmable read-only memory CBI (PROM);

12 - receiver of accurate time signals GSM / GLONASS CBI (PSTV);

13 - communication channel device through which TI, TS and TU signals are received and transmitted between the centralized microprocessor-based relay protection and signaling system, metering, measurement and control of this switchgear of this EA and the centralized microprocessor-based relay protection and signaling, metering, measurement and control of the whole EU (UKS).

The microprocessor device 1 for controlling the output relays of protection and signaling, metering, measurement and control (MCMS) contains a centralized microprocessor system 5 for controlling the output relays for protection and signaling, metering, measurement and control (CMSU) in a switchgear having a group of inputs / outputs 6 for communication with a computer 4, and connected to the block 3 of the Central equipment of communication channels (CAKS).

The difference of the proposed MSUUV is that it additionally contains a series-connected centralized measurement unit 8 (CBI), a centralized measurement unit 9, a central control unit, diagnostics and signaling 10, a programmable read-only memory 11 (PROM), and a central fixed clock signal receiver 12 GSM / GLONASS CBI, as well as a device 13 communication channels (UKS), while block 8 measurements (CBI) is connected to block 3 (TsAKS), PROM 11 CBI, a receiver 12 of the exact time signals GSM / GLONASS CBI, as well as UKS 13, moreover, the PROM 11 CBI is connected to the counter 9 scooter CBI.

Thus, in comparison with the prototype, the new blocks are blocks 8, 9, 10, 11, 12 and 13.

The device operates as follows.

The microprocessor device 1 for controlling the output relays of protection and signaling, metering, measurement and control cyclically polls through the communication channels 2 and the equipment of the communication channels all the connection devices of this switchgear, which ensure the transmission of information (TI and TS) from each individual connection of this switchgear, in turn receiving initially data from primary converters (for example, measuring current and voltage transformers in connection cells) installed in connection cells of this switchgear.

The transfer rate of “useful” data, as well as the requirements for their synchronization (the accuracy of the set timestamps) must comply with international standards related to transient monitoring systems (CMS) and synchronous vector measurements.

The centralized microprocessor system 5 receives data from block 3 of the central equipment of the communication channels through a group of 7 inputs / outputs, providing the functions of the main and backup relay protection and automation of all connections in this switchgear.

The centralized measurement unit 8 of the microprocessor device 1 for controlling the output relays of protection and alarm, metering, measurement and control through unit 3 of the central equipment of the communication channels provides reception, processing, verification and subsequent transmission of measurement data of controlled electrical parameters (values of instantaneous samples of phase currents, phase and / or line voltages, current or zero sequence voltage values, etc.) from each switchgear connection with the accuracy and synchronism necessary for their transfer and SMLF, WAMS etc. top-level systems, such as ES level. For this:

- centralized measurement unit 8 connected to unit 3 of the central equipment of the communication channels, as well as to the receiver 12 of GSM / GLONASS exact time signals, provides reception in accordance with an accepted standard (protocol) of data transmission, for example, Ethernet, instantaneous samples of controlled electrical parameters (instantaneous values samples of phase currents, phase and / or line voltages, current or zero sequence voltage values, etc.) from each switchgear connection device, produces, if necessary, their multiply coding for subsequent transmission to the controller 9 measurements, and also determines the time of arrival of samples - sets with the required accuracy for SMR or WAMS, etc. the upper level, the reception time, writes it in the advising field of the information frame of the adopted standard (protocol) for data transmission at the hardware level;

- the measurement controller 9 connected to the centralized measurement unit 8, processes the data (samples of controlled electrical parameters) received from unit 8 with the necessary speed, processes them, including verification, for example, using the standard CRC algorithm for finding the checksum. If the received data is incorrect, the measurement controller 9 discards incorrect samples of the controlled electrical parameters (data loss) and, using well-known methods for processing data gaps, can “calculate” them, for example, using various statistical methods (procedures);

- the measurement controller 9 of the centralized measurement unit 8, based on the processing results, writes them to the database installed in the connected ROM 11, and / or, according to the results of the additional processing, transfers them to the SMPR and WAMS, etc. top level, for example, ES level;

- transfer of additionally processed data to SMPR and WAMS, etc. the upper level, for example, the ES level, occurs through a centralized unit 8 of measurements, which is connected to a device 13 of communication channels through which TI, TS and TU signals are received and transmitted between centralized microprocessor systems of relay protection and signaling, accounting, measurement and control of all RU of this power plant and centralized microprocessor-based relay protection and alarm system, metering, measurement and control of the whole power plant;

- block 10 monitoring, diagnostics and signaling provides self-diagnosis of a centralized block of 8 measurements, checking the correctness of the transmitted data and, if necessary, transmitting error information (error code) of measurements to the SMPR and WAMS, etc. top level, for example, the level of EU. To do this, the block 10 control, diagnostics and signaling is connected to the controller 9 measurements and PROM 11;

- to ensure the necessary speed and convenience of data processing, to ensure reliable functioning, verification and additional procedures for the received samples (for example, “re-calculating” the samples in the event of unit frame loss in the device 13 communication channels), the ROM is applied 11. In the ROM 11, a database is installed samples, allowing you to store and process the required amount of the last received data, including for their subsequent transmission to the SMR and WAMS, etc. top level, such as ES level.

In normal operation, the corresponding connection devices transmit information (TI) of the normal mode to the microprocessor device 1 for controlling the output relays of protection and alarm, metering, measurement and control, in which an array of data is generated in the built-in ROM 11 (including graphs of power consumption and consumption electricity for each of the connections of this RU). It is possible to import a data array and display it in a user-friendly form on a computer 4 through a group of 6 inputs and outputs.

In the emergency (abnormal) mode (for example, during a short circuit at the connection), the corresponding connection device (or connection device) transmits information (TI, TS) of the emergency (abnormal) mode to the microprocessor device 1 for controlling the output relays of protection and alarm, metering, measurement and control, in which, in turn, the occurrence of accidents (abnormal conditions) at this particular connection (or at several connections) of the switchgear is detected, and generates an emergency event in the switchgear via software tearing up. During this interruption, the centralized microprocessor system 6 for controlling the output relays of protection and alarm, metering, measurement and control processes the information received from the damaged connection device (or devices of damaged connections) and from other adjacent connections, which corresponds to the previous and emergency (abnormal) modes of the damaged connection (connections), and according to the specified algorithms and configuration of relay protection and automation, it generates the corresponding signal T U.

Depending on the control relay output received from the centralized microprocessor system 5, the metering, measurement, and control of the TU signal, the damaged connection device (or the damaged connection device) generates an alarm trigger or other control signal.

After receiving a certification signal (TS) from the device of the damaged connection (or devices of damaged connections), in the centralized microprocessor system 5 for controlling the output relays of protection and signaling, metering, measurement and control, the microprocessor device 1 for controlling the output relays for protection and signaling, metering, measurement and control returns to the cyclical interrogation of devices of all connections RU, while in the memory of a centralized microprocessor system 5 control output relay protection and alarm , metering, measurement and control, data and oscillograms of the emergency (abnormal) mode are stored, which can subsequently be used in service subroutines (for example, in the subroutine for determining the place of damage).

The technical result of the utility model provided by the given set of features is:

1. reducing the number of relay protection devices, automation, metering, measurement and control of electricity installed in compartments of complete switchgears - switchgear and complete switchgears for outdoor installation - KRUN, on panels and cabinets in relay rooms and control panels of electrical substations and stations, including the number of nuclear facilities, premises of distribution substations and station-wide control points (OPU);

2. reduction in the total cost of new and reconstructed systems of relay protection, automation, metering, measurement and control of electricity (including ASK (T) UE, SMPR) in the power supply and in the power supply;

3. the system of relay protection and automation, metering, measurement and control of electricity in power plants, in the ES acquires significantly wider functionality, flexibility of algorithms and configurations, the ability to seamlessly integrate into automated control systems (process control systems, process control systems), transient monitoring systems ( SMPR), automated systems for commercial or technical accounting of electricity (ASK (T) UE), etc .;

4. The process of introducing innovative algorithms and configurations of relay protection and automation systems, metering, measurement and control of electricity based on the latest achievements of science and technology is simplified, cheapened and accelerated;

5. The time and financial costs of construction, installation and commissioning are reduced when deploying relay protection and automation systems, metering, measurement and control of electricity in switchgear, control and electrical systems, as well as the costs of subsequent maintenance and repair of such systems, including due to unification and reduction of the list of spare parts in warehouses of energy supplying enterprises or consumers, reduction of time and financial costs for training or retraining of electrical personnel of enterprises.

Thus, the use of the utility model will expand the functionality, as well as reduce the total cost and increase the flexibility of the configurations of the centralized microprocessor system of relay protection and alarm, metering, measurement and control in the switchgear due to the exclusion of electricity meters at each connection of the switchgear, as well as devices implementing measurement and control of electric network parameters in the form of currents and voltages in individual RU connections.

Claims (1)

A microprocessor control device for output relays of protection and signaling, metering, measurement and control (MSUUV), containing a centralized microprocessor control system for output relays for protection and signaling, metering, measurement and control (CMSU) in a switchgear having a group of inputs and outputs for communication with a computer , and connected to the block of the central equipment of communication channels (CAKS), characterized in that it further comprises sequentially connected centralized measurement unit (CBI), a measurement controller of CBI , a control unit, diagnostics and signaling of a central circuit board, a programmable read-only memory device (PROM) of a central circuit board, a receiver of accurate time signals GSM / GLONASS of a central circuit board, and also a device of communication channels (UKS), while the central circuit board is connected to a block of CAKS, a central control unit of the central circuit board, an exact signal receiver GSM / GLONASS CBI time, as well as with the UKS, and the CBM ROM is connected to the CBI measurement controller.

Images