RU158213U1 - RELAY CONTROL UNIT FOR RELAY PROTECTION AND AUTOMATION - Google Patents

Abstract

1. The relay control unit of the relay protection and automation devices, comprising a logic circuit made using the relay unit, the relay unit is configured to control signals from and to the external relay protection and automation device and the external measurement device in accordance with the operation algorithm, characterized the fact that the relay unit is located on the printed circuit board and connected to the external device connection unit located on it, containing a group of I / O for connecting the power supply to the components of the relay unit control devices for relay protection and automation, a group of inputs / outputs for connecting an external device for relay protection and automation, a group of inputs / outputs for connecting an external measuring device, a group of inputs / outputs for connecting an external sectional switch, and the connections between the components of the relay control unit for relay protection devices and automation made using printed conductors. 2. The relay unit according to claim 1, characterized in that the external device connection unit further comprises an input-output group for the secondary circuit power supply. The relay block according to claim 1, characterized in that the external device connection unit further comprises an input-output group for connecting a zero-protection relay. The relay unit according to claim 1, characterized in that the external device connection unit contains a group of inputs / outputs for connecting an external alarm device. The relay unit according to claim 1, characterized in that the external device connection unit further further comprises a group of input-output digital signals

Description

RELAY CONTROL UNIT FOR RELAY PROTECTION AND AUTOMATION

The technical field to which the utility model relates.

The utility model relates to electrical engineering, namely to devices that are part of automatic reserve transfer devices (ATS). ATS switches the circuit to the backup input when the voltage disappears at one of the working inputs and restore the normal mode circuit after the ATS (VNR).

The relay control unit for relay protection and automation devices (hereinafter referred to as the “relay control unit”) can be used in power supply devices that perform the functions of relay protection, automation, control and signaling of emergency inputs of 0.4 kV sections of complete transformer substations, auxiliary panels of power plants, industrial enterprises and other facilities.

State of the art

It is known from the prior art that the ATS relay control circuit is either assembled directly in a switchboard or switchgear at the manufacturer's factory, or ordered from the manufacturer according to the technical specifications provided by the customer.

The disadvantage of this method of assembling a relay circuit is that it is not possible to quickly change the circuit or eliminate malfunctions or malfunctions, resulting in increased costs for putting the equipment into operation. Another disadvantage is that when assembling the ATS relay circuit, a large number of connections are used that are implemented using wires or cables, which increases the likelihood of errors that can lead to malfunction or failure of the ATS relay circuit or the whole system, a 2

also to the fire. Finding and fixing errors can also take a considerable amount of time.

Also known are relay circuits implemented using microprocessor-based programmable relays (ATS controllers based on microprocessors), for example, Zelio Logic, EnergyController v. 5.21, etc. Such controllers contain programs that implement the necessary functions of measuring phase voltages, control, monitoring the status of additional contacts, signaling about emergency situations, transmitting information about work to the dispatch system, detecting and disconnecting faulty blocks, if the operation of the entire system, VNR, and other

However, the disadvantage of relay circuits implemented using microprocessor-based ATS controllers is that the use of controllers complicates the relay circuit as a whole: there are many modes, interlocks, voltage threshold settings, on / off settings of circuit breakers, etc., Nevertheless , manufacturers of such devices are trying to simplify their operation. For this, for example, the warning and operational operator’s interaction with the device are performed using the touch screen (RF patent for utility model No. 140341, published on 05/10/2014).

In some cases, the manufacturer produces individual protected from outside interference software with its own interfaces and hardware features. A variety of software and the need for special skills, knowledge and skills in programming controllers increase the costs associated with their commissioning and further maintenance.

The closest in technical essence to the claimed technical solution is the relay control unit of the relay protection and automation devices, made in the shield for automatic input of a reserve for two inputs 3

1600A from the company LLC PromElektroServis (http: //www.elektro-, accessed to the site on October 13, 2014). As shown in the photographs, the relay control unit for the relay protection and automation devices implemented in the switchboard contains a logic circuit made using the relay unit. The relay unit is configured to control signals from and to an external relay protection and automation device and an external measurement device in accordance with the operation algorithm.

The closest analogue has all the previously described drawbacks of relay circuits, assembled directly in the switchboard or any other switchgear.

Utility Model Disclosure

When developing the proposed solution, the task was to create a device that is maintainable, reliable, when used, the probability of errors during commissioning is reduced, and safety is increased. If necessary, the device can implement the ability to transfer data using protocols known from the prior art to dispatch systems: automated process control systems (ACS TP), computers, ASDUE (automated dispatch and power management system), etc.

The technical result, which the utility model aims to achieve, is to increase fire safety and electrical safety.

The technical result is achieved due to the fact that the relay control unit of the relay protection and automation devices contains a logic circuit made using the relay unit. The relay unit is configured to control signals from and for an external relay protection device and automation and an external measuring device in accordance with the operation algorithm, is placed on a printed circuit board and connected to the 4

on it the unit for connecting external devices. The external device connection block contains a group of inputs / outputs for connecting power to the components of the relay control unit for relay protection and automation devices, a group of inputs / outputs for connecting an external relay protection and automation devices, a group of inputs / outputs for connecting an external measurement device, a group of inputs / outputs for connecting an external sectional switch. Connections between components of the relay control unit for relay protection and automation devices are made using printed conductors.

In an additional aspect, the proposed device is characterized in that the external device connection unit further comprises an input-output group for the secondary circuit power circuit.

In an additional aspect, the proposed device is characterized in that the external device connection unit further comprises an input-output group for connecting a zero-protection relay.

In an additional aspect, the proposed device is characterized in that the unit for connecting external devices contains a group of inputs / outputs for connecting an external alarm device.

In an additional aspect, the proposed device is characterized in that the unit for connecting external devices further comprises an additional group of input-output digital signals.

In an additional aspect, the proposed device is characterized in that the external device connection unit comprises a group of inputs / outputs for controlling the relay control unit of the relay protection and automation devices from the push-button station.

In an additional aspect, the proposed device is characterized in that it further comprises an indication unit.

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In an additional aspect, the proposed device is characterized in that it further comprises a control unit for the algorithms of operation of the relay block devices of relay protection and automation.

In an additional aspect, the proposed device is characterized in that the printed circuit board is housed in a housing equipped with a device for mounting.

In an additional aspect, the proposed device is characterized in that the housing is made unified, made of non-combustible plastic, and the mounting device is configured to be mounted on a standard DIN rail.

In an additional aspect, the proposed device is characterized in that it further comprises a microprocessor-based data acquisition and transmission module located on a printed circuit board, connected to the relay unit and to the external device connection unit, configured to self-diagnose, collect, convert and transmit data from the unit a relay, an external relay protection device and automation and an external measuring device, to the upper level system by means of an additional external devices of the input-output group of digital signals and containing a microcontroller, while the connections between the components of the microprocessor module for collecting and transmitting data are made using printed conductors.

In an additional aspect, the proposed device is characterized in that the microprocessor-based data acquisition and transmission module is placed on a separate printed circuit board connected by a loop to the printed circuit board on which the relay unit is located.

In an additional aspect, the proposed device is characterized in that the external device connection unit further comprises an input-output group for powering the components of the microprocessor data acquisition and transmission module.

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In an additional aspect, the proposed device is characterized in that the microprocessor-based data acquisition and transmission module is configured to transmit data via the RS-485 interface to the Modbus / RTU protocol.

In an additional aspect, the proposed device is characterized in that the microprocessor module for collecting and transmitting data is configured to transmit data over Ethernet.

Brief Description of the Drawings

The essence of the utility model is illustrated by figures, which depict:

FIG. 1 is a structural block diagram of a relay control unit with a microprocessor module.

FIG. 2 is a general view of a relay control unit with a microprocessor module.

FIG. 3 is a plan view of a relay control unit with a microprocessor module housed in a housing.

FIG. 4 is a side view of the relay control unit with a microprocessor module located in the housing.

FIG. 5 is a simplified circuit breaker circuit breaker for a three-phase network, created using the inventive relay control unit with a microprocessor module.

Utility Model Implementation

The utility model is illustrated by an example of execution. This example is not the only possible one, but is intended to demonstrate the ability to achieve a given technical result by the claimed combination of essential features. For a better understanding of the essence of the utility model, an example of a relay control unit with a microprocessor module is given, 7

to demonstrate the implementation of the relay control unit with the ability to transmit data about the operation of the relay circuit.

The figure 1 presents a structural diagram of a relay control unit with a microprocessor module.

The relay control unit with a microprocessor module contains an external device connection unit 1, a relay unit 2, an operation algorithm control unit 3 (type of relay circuit), an indication unit 4, a data acquisition, processing, conversion and transmission unit 5. Moreover, the relay unit 2 is connected to the external device connection unit 1, the operation algorithm control unit 3, the indication unit 4, and the data collection, processing, conversion and transmission unit 5. And block 5 for collecting, processing, converting and transmitting data is additionally connected to block 1 for connecting external devices.

Block 1 connecting external devices contains:

- a group of inputs / outputs for connecting the power components of the relay control unit and microprocessor module,

- a group of inputs / outputs for connecting protection devices and / or voltage and / or current monitoring devices: at least one circuit breaker, at least one voltage monitoring relay,

- a group of inputs / outputs for controlling at least one sectional switch,

- a group of inputs / outputs for controlling at least one gear motor,

- a group of conclusions-conclusions for measurement using at least one current transformer,

- one group of inputs / outputs for the power circuit of at least one secondary circuit,

- a group of inputs / outputs for connecting at least one zero-protection relay,

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- a group of inputs / outputs for at least one external signaling device,

- a group of inputs and outputs of discrete signals,

- a group of digital signal outputs from a microprocessor module,

- a group of inputs and outputs for controlling a relay control unit from a push-button station.

From the button post you can perform the following actions:

- return ABP,

- control (reset) signal zero protection,

- control of protection devices and / or voltage and / or current control devices,

- control of the sectional switch,

- inclusion of the manual ABP mode.

The external device connection block performs the following functions:

1. Input power from power sources.

2. Input of analog signals to the relay control unit.

3. The output of analog signals from the relay control unit.

4. The output of digital signals from block 5 collection, processing, conversion and data transfer.

The relay unit 2 contains a group of electromechanical relays and time delay relays, which are connected using conductors in such a way as to realize a logic circuit configured to perform at least one logical function and / or at least one operation. The logic diagram contains the logical elements AND, OR, NOT, or a combination thereof. Thus, relays connected in a certain way by means of conductors provide the formation of control signals for relay protection and automation devices in accordance with the operation algorithm (ABP operation logic).

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Block 2 of the relay performs a switching function: it receives, processes, redistributes the incoming information in the form of signals from external devices, transfers information about the state of the circuit to block 5 for collecting, processing, converting and transmitting data and generates control signals for external relay protection and automation devices.

Block 3 allows you to select the operation algorithm, i.e. type of relay circuit used.

The display unit 4 is configured to display:

- on / off status of circuit breaker,

- the presence of voltage at the inputs,

- the presence of an accident at the inputs,

- state on / off of the sectional switch,

- readiness of ABP.

Block 5 collection, processing, conversion and transmission of data is implemented as a microprocessor module. The microprocessor module is a device configured to receive signals from electromechanical relays: the inputs of the microprocessor module are connected to the status outputs of at least one electromechanical relay. In addition, the microprocessor module is capable of self-diagnosis, receiving, processing, converting analog and discrete signals to digital form and transmitting converted signals from the relay unit 2, external relay protection devices and / or automation. The microprocessor module transmits information about the operation of the assembled system and the accidents that occurred on it.

Thus, the microprocessor module converts analog and discrete signals into digital form and transmits them to the upper level control system of the industrial control system through the corresponding digital output group of the external device connection unit 1.

The microprocessor module transmits the following signals:

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- state on / off circuit breakers,

- notification of an accident at the inputs,

- voltage in sections,

- notification of a single-phase short circuit (short circuit) at the inputs,

- state on / off of the sectional switch

- accident warning sectional switch.

The figure 2 presents the implementation of the relay control unit with a microprocessor module. Structurally, the device is made on two printed circuit boards: a relay control unit 12 is located on one board, and a microprocessor module 13 is located on the second. Connections between at least two components on each printed circuit board are made using printed conductors.

The relay control unit 12 comprises an external device connection unit 1, a relay unit 2, an operation algorithm control unit 3, and the microprocessor data module 13 further comprises an indication unit 4.

Block 1 connecting external devices is implemented using rows of screw terminals 14.

Block 2 of the relay contains a logic circuit implemented using 21 electromechanical relays 15 and three relays 16 time delay. Each electromechanical relay has one coil control input and four groups of status contacts, is noise-protected and is selected taking into account possible interference on the line. The group of status contacts is designed to transmit signals to the microprocessor module 13. At least one relay is connected to the unit 1 for connecting external devices.

Block 3 control algorithms of work is implemented using a set of jumpers (not shown), which are installed in a certain way in the screw terminals 14.

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The display unit 4 is made in the form of a set of LEDs 17 different colors. The loop 18 provides an exchange of signals between the components of the relay control unit 12 and the microprocessor module 13.

The AVR OS software is installed on the microprocessor module, which provides self-diagnosis, data collection, storage and transmission via the RS-485 interface to the Modbus / RTU protocol.

In figures 3, 4 presents the implementation of the relay control unit 12 with a microprocessor module 13 in the housing.

Both boards are placed in a unified housing 19 made of non-combustible plastic. On top, the housing 19 is closed by a cover 20 made of transparent non-combustible plastic, and on the bottom there is a device 21 for mounting on a standard DIN rail with a mounting latch.

Before using the relay control unit 12 with the microprocessor module 13, it is necessary to set the address necessary for identifying the device when it is connected to a computer. To perform this procedure, the cover 20 is unscrewed, an address from 1 to 64 is set in the binary numeral system on the DIP switch (not marked in the figures) located on the printed circuit board of the microprocessor module 13 for collecting and transmitting data. The cover 20 is mounted on the housing 19 and secured with screws.

Next, the housing 19 is placed on a DIN rail in the cabinet automatically enter the reserve. For this, the housing 19 is suspended on a DIN rail, then press on it until the clicks of the latch of the device 21 for mounting.

Assemble the relay circuit for automatic input of the reserve. To do this, multicore copper cables from relay protection and automation devices, necessary for the correct operation of the ABP, are inserted into insulated sleeve pin terminals and crimped. Then the tips are inserted into the screw terminals 14 of the relay control unit 12, 12

where they are clamped with screws. Also, the 24 V power supply of the relay control unit 12 and the microprocessor module 13 are connected to the screw terminals 14.

Next, connect the microprocessor module 13 to the computer. To do this, connect the RS-485 interface using a twisted pair of wires corresponding to the input / output group of the relay unit 12. The received from the microprocessor module 13 is collected using the ModBus / RTU protocol. On a computer that supports this interface and puncture, the device address set on the DIP switch is set. The LEDs 17 signal the status of the relay control unit 12 and the ABP circuit.

Using jumpers of the block 3 control algorithms of work set 8 logical circuit - the type of relay circuit used - in block 2 of the relay.

The principle of operation is illustrated in figure 1. Analog and / or signals 6 about the operation of at least one relay protection device and automation, about the loss of voltage at the inputs, about the state of the input and at least one section switch and push-button control unit ABP through block 1 external Connections enter block 2 of the relay, where they are processed. The control analog and / or discrete signals 7 are fed back to the relay protection and automation devices through block 1 of external connections. The signals from the relay 15 of the relay control unit 12 represent the supply of an analog signal 10 (DC 24 V) to the unit 5 for collecting, processing, converting and transmitting data. In the event of the operation of one of the relays 15, it closes the 24 V circuit, and the block 5 for collecting, processing, converting and transmitting data receives a signal about this event, registers it in the event log, converts and transmits digital signals 11 to the computer through the block 1 of external connections 11 . In addition, the signals 9 from block 2 of the relay are transmitted to block 4 indication.

In FIG. 5 presents a simplified circuit breaker circuit breaker for a three-phase network, created using the inventive relay control unit with 13

microprocessor module. Figure 5 is intended to explain the method of its use.

The circuit contains two independent inputs 24 and 25 from two independent electric power sources 22 and 23. The circuit further comprises a voltage monitoring relay 26 and 27 on each input 24 and 25 for voltage measurement, as well as circuit breakers on gear motors 28 and 29.

The initial configuration of the relay control unit 12 is carried out, the type of relay circuit is set according to the procedure described above. The microprocessor module 13 is also configured. In the absence of malfunctions, the device is put into automatic operation mode.

In normal operation of the circuit, consumers 31 and 32 are powered by two independent power sources 22 and 23, respectively. In the event of an emergency at input 24, for example, lack of voltage, the relay control unit 12 will receive data on voltage changes from the voltage monitoring relay 26. Next, it will receive data on the input state 25 from the voltage control relay 27 and from the circuit breaker 29 and, in the absence of malfunctions, will generate control signals to turn off the circuit breaker 28 and turn on the section switch 30. As a result of the procedure, consumers 31 and 32 will be connected to an electric source power 23 through the input 25, thus, performed ABP for the consumer 31.

When resuming the supply of voltage at the input 24, the relay control unit 12 will generate control signals to turn on the circuit breaker 28 and turn off the section switch 30. As a result of the described sequence of actions, a VNR is performed.

In the event of short-term voltage ripples at one of the inputs in the relay control unit 12, an adjustment of the time for repeated return to this input, implemented using relay 14, is provided

time delays located on the board. Using one of the relays, the delay time is set after a voltage failure and until the ABP circuit operates on one of the inputs. Using the second relay, it provides a delay time after a power failure and before the automatic transfer switch trips on the second input. Using the third relay, the time after which the sectional switch 30 is turned off when it returns to its normal state is controlled.

This principle of operation is also applicable to the emergency situation that occurred at input 25. In the event of an emergency at input 25, the relay control unit 12 will receive voltage change data from the voltage monitoring relay 27. Next, it will receive data on the input state 24 from the voltage control relay 26 and the circuit breaker 28 and, in the absence of malfunctions, will generate control signals to turn off the circuit breaker 29 and turn on the section switch 30. As a result of the procedure, consumers 31 and 32 will be connected to an electric source power supply 22 through the input 24, thus, performed ABP for the consumer 32.

When eliminating the accident at input 25, the relay control unit 12 will generate control signals to turn on the circuit breaker 29 and turn off the sectional switch 30. As a result of the described sequence of actions, a VNR is performed.

A microprocessor module (not shown in the figure) collects incoming information about events and transmits it to a computer.

The description of the use of the relay control unit 12 with the microprocessor module 13 clearly demonstrates that the microprocessor module 13, if necessary, can be disconnected from the relay control unit 12, while maintaining the operability of the entire ABP circuit.

For a clearer understanding of the idea underlying the present utility model, its description was supplemented by figures. However, submitted 15

and the described figures do not limit the options for its implementation and use. Other designs and uses are possible in accordance with the formula and conditions of use. There are also no restrictions on the choice of materials, quantity, form of execution of structural elements, devices and electronic components.

By microprocessor module 13 is meant a means capable of collecting, receiving, converting, storing and transmitting signals using any protocol and data transmission interface implemented in the art. In addition to the RS-485 interface, for example, an Ethernet interface can be used. The microprocessor module 13 can be implemented on the basis of a microcontroller known from the prior art. As an example, but not limited to the quality of microcontrollers, ATMEL AtMega128, ST STM32F, etc. can be used. Obviously, if necessary, there can be several such microcontrollers and any combination of them can be used. Microprocessor modules 13 may also be several.

The indication unit 4 can be performed, for example, by a group of LEDs located on the printed circuit board of the relay control unit 12, by a group of LEDs located on the printed circuit board by the microprocessor module 13, or by using light bulbs on the door of the switchboard, voltage being supplied to the bulbs from one from relay block connectors. In addition, the display unit 4 may be at least one external signaling device (sound and / or light). For example, such a device may be system control buttons located on the cabinet door.

In this case, an analog signal is understood to mean a signal that changes in the voltage range 0-5 V, 0-10 V, 0-24 V, 0-220 V and the current range 0-1 A of alternating voltage.

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In this case, a discrete signal means two types of analog signals: a high logical level and a low logical level. A high logic level corresponds to a voltage of 24 V and is taken as a logical unit (1), low - 0 V and is taken as a logical zero (0). In practice, such voltage levels are not always achieved, so the logical unit and logical zero are in some limited and non-overlapping ranges between 0 and 24 V. In addition, a range of 0-220 V. can be used.

Block 1 connecting external devices allows you to connect additional discrete signals from any external additional devices and enter their circuit. For example, such additional devices may include a diesel generator (“start permission” signal), an external timer, etc.

In this case, a digital signal means two types of analog signals: a high logical level and a low logical level. A high logical level corresponds to a voltage of 5 V and is taken as a logical unit (1), low - 0 V and is taken as a logical zero (0). In practice, such voltage levels are not always achieved, so the logical unit and logical zero are in some limited and non-overlapping ranges between 0 and 5 V.

As a device receiving digital signals from the microprocessor module 13, a computer was used, however, any other independent device, a device included in the scheduling system, or a combination thereof can be used. As such systems can be ACS TP, ASUDE, central controller, etc. As devices, servers, controllers, etc. can be used.

Under the logical circuit (relay circuit) refers to a circuit that receives, processes, redistributes the signals from 17

relay protection and automation devices and the formation of control signals for them. The circuit is configured to perform at least one logical function and / or at least one operation using the logic elements on which the logic of the ATS is based. Logic elements are made using relays and conductors connected in a certain way, determining the type of circuit and the algorithm of its operation. The number and composition of logical elements, as well as the functions and operations performed by them, are determined by the implemented logic circuit.

If necessary, part of the printed conductors can be replaced with any other data transmission device, for example, wires and cables.

In the example, as the location of the housing 19 of the relay control unit 12 with a microprocessor module 13, an automatic reserve input cabinet was taken. However, it is possible to use any other switchgear or switchboard.

The DIN rail was chosen as the location in the example, so the housing 19 contained a device 21 for mounting it on it. However, the housing 19 may additionally contain other devices and / or mounting mechanisms, or they may be absent.

It is obvious that the relay control unit 12 can be used as a stand-alone device, i.e. without microprocessor module 13, as evidenced by an example of its use.

The relay control unit 12 and the microprocessor module 13 can be placed on one printed circuit board or the components of each can be spaced on several printed circuit boards. Moreover, the boards can be located in one housing or in several. And cases can be equipped with fastening devices, for example, on a DIN rail.

Under the block 3 of the control algorithms of work is understood any device that allows you to change the type of relay circuit, while it can be both part of the relay control unit 12, and is located outside of it 18

limits. For example, jumpers installed in the screw terminals 14 can be replaced by wires connected, for example, to an external control panel. This panel may contain relays, computers, and other equipment, or a combination thereof, allowing you to change the type of relay circuit.

The relay control unit 12 is positioned as a universal tool containing several types of relay circuits. Therefore, in order to expand its functionality, components and input-output groups can be added to it and / or removed from it and / or not used. The number and combination of such components and groups is determined by the requirements for the relay control unit 12. For example, if the relay control unit 12 is used without a microprocessor module 13, then the group of outputs of the digital signals and its power may not be available. The ability to select the type of logic circuitry allows for manual, semi-automatic, or fully automatic selection of backup power input. Relay protection, automation, measurement and their number are selected taking into account the implemented scheme.

In FIG. Figure 5 shows an ABP circuit containing two independent power sources 22, 23 and two consumers 31, 32 with sectioning. The relay control unit 12 can be applied to other versions of the ATS circuitry. For example, for an ABP circuit containing two inputs and one consumer or two inputs and two consumers, two inputs with a priority of the first or second input, two inputs and one additional input from a diesel power station (DES) or from a diesel generator set (DGU) or diesel -generator with or without sectioning, with or without priority, one input and one input from a diesel power station (DES) or from a diesel generator set (DGU) or diesel generator.

To describe the method of using the relay control unit 12 as an example of an emergency, a power failure was used. However, the relay control unit 12 may 19

be configured to produce an ATS in the event of a short circuit, a change in the voltage level, another parameter or a combination thereof in the power supply and / or consumer, or, for example, when the current disappears from the power source and the frequency decreases on the consumer buses, etc.

As a device for detecting an emergency at the input, voltage control relays 26, 27 were used. However, instead of or in conjunction with them, another measuring device or devices can be used, for example, at least one measuring current transformer, which can be connected to the relay control unit 12. Based on the incoming information from the measuring current transformer and / or voltage monitoring relay, control signals will be generated. The number and composition of measurement devices depends on the purpose, the implemented ABP circuit and the implemented protection circuit.

The relay control unit 12 can be formed so that a power source other than 24 V can be used to power it. The components of the relay control unit 12 and microprocessor module 13 are understood as electronic and / or auxiliary components, electronic and / or auxiliary devices, means of connection external devices used for their manufacture and necessary to fulfill their purposes and functions.

Housing 19 means a device in which a relay control unit 12 or a relay control unit 12 with a microprocessor module 13 is placed and held firmly. In addition, the housing 19 performs the function of protecting the relay control unit 12 and, if available, the microprocessor module 13 from external mechanical, temperature , electrical and other types of impacts. The housing 19 may be closed or open. Additionally may contain a cover. Also, the housing 19 may or may not contain special retention devices 20

relay control unit 12 and, if available, a microprocessor module 13 in the housing, for example, latches, clamps, screws, etc. If necessary, the relay control unit 12 and the microprocessor module 13 may be housed in different housings, or the housing may be absent.

The housing 19 may be equipped with a device 21 for mounting, which means a means that allows you to securely fix the housing 19 in the placement at any angle. Additionally, the attachment device 21 may be provided with a latch or any other suitable holding element. The fastening device 21 may be part of the housing, additional equipment or a modular element, for example, if you need to place the device not on a DIN rail, the element is removed and replaced with a suitable one.

In the example, the external device connection unit 1 was implemented using screw terminals 14. However, one skilled in the art will recognize that in this case, screw terminals 14 provide reliable connection of cables or wires of external devices to the relay control unit 12. Thus, in addition to the screw terminals 14, other means can be used to ensure reliable connection of external devices to the relay control unit 12. As an example, but not limitation, there may be spring-loaded terminals, a pluggable terminal block, a set of wires, a set of soldering pads, or a pin connection. It should be understood that the implementation of block 1 connecting external devices will depend on the purpose and / or ease of use and use.

At least one residual current device or any other protection device or a combination thereof can be additionally used as protection devices.

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The inventive relay control unit can work with all currently known devices of relay protection and automation and measurement firms ABB, Siemens, Schneider Electric, etc.

In the relay control unit, the connections between its components are made using printed conductors, which ensures the compactness of the system, further reduces the likelihood of errors during assembly and operation, increases simplicity and reduces labor costs for installation and maintenance of automatic reserve devices, unlike traditional automatic reserve input devices, in which the connections between the components are made by wires and cables structurally.

Another advantage is that several types of logic circuits can be implemented on the printed circuit board of the relay control unit, and the choice of these circuits, i.e. operation algorithms of the relay control unit (operating mode, configuration) is determined by a special device and / or devices, for example, switches, jumpers, etc. Thus, the universality of the device is realized. For example, a relay control unit may contain logic circuits for implementing thyristor (electronic) ATSs, electromechanical ATSs on contactors, electromechanical ATSs on electric circuit breakers, electromechanical ATSs on controlled electric switches, etc. As a result, a simplified configuration of the relay circuit is implemented: it is only necessary to perform equipment selection, connect it to the relay control unit and establish the type (configuration, operation algorithm) of the relay circuit, i.e. basic training is needed for the maintenance of relay protection cabinets - electricians.

If it is necessary to create a unique circuit, then the logical circuit is changed in accordance with the requirements and is made 22

industrial method, not manual, which reduces the likelihood of errors.

All these advantages provide simplicity and convenience during the commissioning and operation of relay circuits.

Thus, it is obvious that changes and embodiments of the relay control unit can be made without departing from the scope of legal protection claimed in the formula. In addition, the claimed utility model combines simplicity, reliability and maintainability from relay based circuits and versatility implemented in microprocessor based ABP controllers. In addition, the introduction of the claimed utility model in the industry will increase economic efficiency, for example, by reducing the costs associated with the development, commissioning and operation of ATS schemes. And the execution of part of the connections by printed conductors will reduce the likelihood of errors.

Claims (15)

1. The relay control unit of the relay protection and automation devices, comprising a logic circuit made using the relay unit, the relay unit is configured to control signals from and to the external relay protection and automation device and the external measurement device in accordance with the operation algorithm, characterized the fact that the relay unit is located on the printed circuit board and connected to the external device connection unit located on it, containing a group of I / O for connecting the power supply to the components of the relay unit control devices for relay protection and automation, a group of inputs / outputs for connecting an external device for relay protection and automation, a group of inputs / outputs for connecting an external measuring device, a group of inputs / outputs for connecting an external sectional switch, and the connection between the components of the relay control unit for relay protection devices and automation made using printed conductors. 2. The relay unit according to claim 1, characterized in that the external device connection unit further comprises an input-output group for the secondary circuit power circuit. 3. The relay unit according to claim 1, characterized in that the external device connection unit further comprises an input-output group for connecting a zero-protection relay. 4. The relay unit according to claim 1, characterized in that the unit for connecting external devices contains a group of inputs / outputs for connecting an external alarm device. 5. The relay unit according to claim 1, characterized in that the external device connection unit further comprises further comprises a group of input-output digital signals. 6. The relay unit according to claim 1, characterized in that the external device connection unit contains a group of inputs / outputs for controlling the relay control unit of the relay protection and automation devices from the push-button station. 7. The relay unit according to claim 1, characterized in that it further comprises an indication unit. 8. The relay block according to claim 1, characterized in that it further comprises a control unit for the algorithms of operation of the relay block devices of relay protection and automation. 9. The relay unit according to claim 1, characterized in that the printed circuit board is housed in a housing equipped with a mounting device. 10. The relay block according to claim 9, characterized in that the housing is made unified from non-combustible plastic, and the mounting device is configured to be mounted on a standard DIN rail. 11. The relay unit according to claim 1, characterized in that it further comprises a microprocessor data acquisition and transmission module located on a printed circuit board, connected to the relay unit and to the external device connection unit, configured to self-diagnose, collect, convert and transmit data coming from a relay unit, an external relay protection device and automation and an external measuring device, to the upper level system by means of an additional input / output group Frova signals and comprising a microcontroller, wherein the connections between components of the microprocessor data collection and transmission module configured using printed conductors. 12. The relay block according to claim 11, characterized in that the microprocessor-based data acquisition and transmission module is located on a separate printed circuit board connected by a loop to the printed circuit board on which the relay block is located. 13. The relay unit according to claim 11, wherein the external device connection unit further comprises an input-output group for powering the components of the microprocessor data acquisition and transmission module. 14. The relay unit according to claim 11, characterized in that the microprocessor-based data acquisition and transmission module is configured to transmit data via the RS-485 interface to the Modbus / RTU protocol. 15. The relay unit according to claim 11, characterized in that the microprocessor-based data acquisition and transmission module is configured to transmit data over Ethernet.

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