RU211411U1 - Modular digital substation process bus coupler - Google Patents

Abstract

The utility model under consideration relates to interface devices (communications) with an object (USO), in particular to interface devices with the process bus of a "digital" electrical substation (DPS) in accordance with the IEC 61850 standard, and in particular to the above interface devices with the DSP process bus in in accordance with IEC 61850, made in a modular design. The technical result of applying the utility model is, in the case of upgrading a power facility, in particular with the decommissioning of some of the existing connections and, along with this, the commissioning of new connections that require a different number and types of I / O signals for integration into the DSP process bus , eliminating the need to replace the entire interface device, due to the device providing the possibility of appropriate replacement of individual peripheral modules as part of the device (in particular, modules of other types). This, accordingly, reduces the complexity of the work on the above replacement, and also reduces the possible downtime of the device. The proposed device (1), consisting of a modular chassis (2) equipped with a backplane (37), with a processor module (4), at least one power supply module (3), at least one module (9 ) analog input of direct measurements of alternating current of industrial frequency, at least one module (10) of analog input of direct measurements of alternating voltage of industrial frequency, at least one module (11) of discrete input, at least one module (12) of discrete output. At the same time, unlike the prototype, each of the modules (9), (10), (11) and (12) has a corresponding block of information and power supply interface with the backplane of the modular chassis of the device ((17), (23), (28), (32)) and the corresponding unit (voltage converter) ((16), (22), (27), (31)), connected to each other. In this case, the processor module additionally contains a block (36) of information and power supply interface with the backplane and a block (35) (voltage converter) of the module power supply connected to each other. In this case, individual blocks (17), (23), (28), (32) as part of modules, respectively, (9), (10), (11) and (12) are connected to block (36) of module (4) via the SPI communication bus ("Serial Peripheral Interface"), while all modules (9), (10), (11) and (12) in the device are made unified in form factor.

Description

FIELD OF TECHNOLOGY

The utility model under consideration relates to devices for interfacing (communication) with an industrial facility (USO) (respectively, to devices as part of automated process control systems (automated process control systems) of industrial facilities that provide signal input, in particular analog and discrete ones (with the execution, respectively, analog-to-digital and discrete-to-digital conversion of signals), from the object to the automated process control system, and the output of signals, in particular discrete ones (including control signals of the primary technological equipment of the object - with the corresponding conversion of these signals from digital form to output discrete signals), from the automated control system TP per object). In this case, the utility model, in particular, relates to interface devices with the process bus of a "digital" electrical substation (DPS) in accordance with the IEC 61850 standard, which provides, among other things:

1) input of analog and discrete signals from the power facility (substation), in particular from the primary electrical equipment of the substation, into the communication bus of the DSP process - for subsequent transmission of these signals through the specified process bus to external IEDs ("Intelligent Electronic Device") devices, including the conversion of analog signals of direct measurements of alternating current and voltage of industrial frequency (in particular, from traditional measuring transformers of current and voltage) to IEC 61850-9-2 output digital streams, and discrete signals to outgoing ones, including GOOSE (IEC 61850-8-1) messages;

2) output of discrete signals received from the DSP process bus in digital form (formed initially by external IEDs and transmitted via the DSP process bus from the specified IEDs, in particular, control signals of the substation primary electrical equipment) to the substation primary electrical equipment.

In particular, the utility model relates to the above DSP process bus interface devices in accordance with IEC 61850, implemented in a modular design - based on a modular chassis (rack) and replaceable peripheral modules, including analog/discrete input and discrete output modules, where the above modular the design provides the possibility of replacing individual functional modules (including peripheral ones) as part of the device directly at the place of operation, for example, in the event of a malfunction of the corresponding peripheral modules as part of the device.

BACKGROUND OF THE INVENTION

Known modular controllers NPT RTU (microRTU) [1, 2, 3] from the manufacturer GK "EnergopromAvtomatizatsiya" (Russia). At the same time, the NPT microRTU controller can be used as a remote device for interfacing with an object (USO) (DMU) when creating a "Digital Substation" ("DMU" - "Digital (Discrete) Merging Unit") in terms of ensuring the conversion of discrete input and discrete output signals to digital information exchange protocols via the DSP communication network, in particular, to GOOSE (IEC 61850-8-1) messages and vice versa. At the same time, the NPT RTU modular controller provides the possibility of quite arbitrary filling of the controller's modular chassis (crate) with discrete input and output modules, which makes it possible to receive up to 256 discrete input signals and generate up to 128 control commands (through the corresponding discrete outputs) as part of one controller. However, this controller does not include plug-in modules that convert direct current/voltage measurements to IEC 61850-9-2 output streams, and thus does not provide the functionality of an AMU ("Analog Merging Unit") device, and thus therefore, does not provide the full range of functions of the process bus coupler of a "digital" electrical substation in accordance with IEC 61850.

Known as a prototype of the multifunctional device "depRTU" [4] from the manufacturer LLC "Company DEP" (Moscow), which can function, including as a merging unit (MU - Merging Unit) (including as a device "AMU / DMU" - "Analog Merging Unit" / "Digital (Discrete) Merging Unit") as part of RPA systems made using the "digital substation" technology. The device is made on the basis of a modular chassis (crate) with a processor module and peripheral modules installed in it, including discrete input/output modules, measuring modules (for direct measurements of alternating current/voltage with a nominal frequency of 50 Hz), etc. In this device, each replaceable (in including the peripheral) module occupies a certain place/position (slot) in the crate, which are fixed in the passport for the device supplied from the manufacturer (in fact, the configuration of the types (composition and location) of the removable devices installed in the crate (incl. peripheral) modules (complete set) is determined by the manufacturer of the device), which does not allow changing the composition of the types used in the crate of modules to the consumer at the place of operation of the device.

DISCLOSURE OF THE ESSENCE OF THE UTILITY MODEL

The technical problem to be solved by the claimed utility model is the creation of a modular device for interfacing with the bus of the "digital substation" process, which makes it possible to freely equip the device with replaceable peripheral modules, including discrete input modules; discrete output, including control of switching devices; analog input for direct measurements of AC current (e.g., 1A/5A) and voltage (57.7/100 V), etc., directly at the place of operation of the device, including the ability to install any peripheral modules (of any type) on any seats (slots ) in the chassis (cradle) of the interface device.

The technical result of the application of the utility model is, when upgrading a power facility, in particular with the decommissioning of some of the existing connections and, along with this, the commissioning of new connections that require a different number and types of I / O signals for integration into the DSP process bus, eliminating the need to replace the entire interface device, due to the device providing the possibility of appropriate replacement of individual peripheral modules as part of the device (in particular, modules of other types). At the same time, accordingly, the complexity of performing work on the above replacement is reduced, and the possible downtime of the device is also reduced (due to the fact that it eliminates the need to reconnect the power supply circuits of the interface device from the old device to the new device, and also eliminates the need to reconnect external circuits - analog input, digital input, digital output - for all other peripheral modules in the device from the old device to the new device).

The specified technical result is achieved in a modular digital substation process bus interface device, consisting of a modular chassis equipped with a backplane containing slots that can be installed in any of the specified slots of a power supply module, a processor module, and peripheral modules, regardless of their type. , a single unified communication and power bus, made with the possibility of information and communication interface of modules for full duplex data transmission, as well as power supply interface of modules with the backplane.

At the same time, a single unified communication and power bus is configured to provide the possibility of full-duplex data transmission in the direction both from individual peripheral modules to the processor module as part of the device’s modular chassis, and in the opposite direction, including the possibility of transmitting both direct measurement data through the specified information bus AC current/voltage from peripheral modules, and discrete input signals from peripheral modules to the processor device module, and discrete output signals from the processor device module to peripheral discrete output modules.

The above technical result is achieved through the implementation of a modular interface device with the DSP process bus:

with peripheral modules unified in terms of form factor (in particular, in terms of dimensions), which makes it possible to install an arbitrary peripheral module of the device (regardless of its type) in any slot of a modular chassis intended for installing peripheral modules;

with a single unified communication and power bus as part of the backplane of the device's modular chassis, which provides for each of the peripheral modules in the device's modular chassis, including:

a) information and communication interface with the processor module (MP) as part of the modular chassis of the interface device - based on the SPI ("Serial Peripheral Interface") bus, which provides the possibility of full-duplex data transfer in the direction both from individual peripheral modules to the MP as part of the modular chassis of the device , and in the opposite direction, including the provision of the possibility of transmitting through the specified information bus both data of direct measurements of alternating current / voltage from peripheral modules of analog input of direct measurements of alternating current / voltage, and discrete input signals from peripheral modules of discrete input to the MP device, so and discrete output signals from the MP device to peripheral discrete output modules, etc.;

b) power supply interface with at least one power supply module in the modular chassis of the interface device;

with the presence in the structure of each peripheral module of the device (including modules of analog input, discrete input and discrete output) of an information and power supply interface unit with a backplane of the modular chassis of the interface device connected, on the one hand, with the unit (voltage converter) power supply for this peripheral module, as well as: with a block of amplifiers and analog-to-digital converters (ADC) - for the analog input module for direct current measurements, with an insulator block and an output data multiplexer - for the analog input module for direct voltage measurements, with an input register block - for discrete input modules, with output register block - for discrete output modules; and, on the other hand, with a similar block of information and power supply interface with the backplane of the modular chassis of the interface device as part of the MP module of the device and with a common power bus (connecting, among other things, individual peripheral and processor modules of the interface device, at least with one power supply module as part of the interface device);

with a power supply unit (voltage converter) in each of the peripheral modules of the interface device, providing, as part of each of the peripheral modules, the formation of the necessary supply voltages from a single supply voltage obtained from the common power bus of the device's backplane (from, respectively, the device's power supply modules). to power all hardware components of this peripheral module.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows a diagram of the internal structure of the proposed device for interfacing with the bus of the DSP modular process.

In FIG. 2 shows an embodiment (described below) of the utility model in a certain configuration of the composition of the peripheral modules of the interface device.

IMPLEMENTATION OF UTILITY MODEL

The interface device (1) (see Fig. 1) is made on the basis of a modular chassis (2), which includes at least one power supply module (3), a processor module (4), and peripheral modules consisting of: a block of modules analog input for direct measurements of AC power frequency (5), block of analog input modules for direct measurements of AC voltage of industrial frequency (6), block of discrete input modules (7) and block of discrete output modules (8).

In this case, the block of analog input modules for direct current measurements (5) may include analog input modules (9) of various types, including:

current measurement input modules - for the purposes of relay protection and automation (RPA);

current measurement input modules for the purposes of measurement, accounting and power quality control.

The block of analog input modules for direct voltage measurements (6) may include analog input modules (10) of various types, including:

voltage measurement input modules - for the purposes of relay protection and automation (RPA);

voltage measurement input modules for the purposes of measurement, accounting and power quality control.

Block of discrete input modules (6) may include discrete input modules (11) of various types, including:

discrete signal input modules with a nominal voltage level of 220 V DC;

discrete signal input modules with a nominal voltage level of 24 V DC.

Block of discrete output modules (7) may include discrete output modules (12) of various types, including:

discrete output modules to control the circuit breaker at the substation;

modules of discrete outputs of general purpose.

In this case, each analog input module for direct current measurements (8), regardless of the module type, includes:

block of external interfaces for connecting measuring circuits (13);

block (14) of input signal converters (current transformers);

block of amplifiers and analog-to-digital converters (ADC) (15);

power supply unit (voltage converter) (16) of the module;

block (17) of information and power supply interfacing with the backplane of the modular chassis of the interfacing device;

where the above blocks are connected to each other as shown in FIG. one.

Each direct voltage analog input module (10), regardless of module type, includes:

block of external interfaces for connecting measuring circuits (18);

block (19) of input signal converters (voltage dividers);

block of amplifiers and analog-to-digital converters (ADC) (20);

block of insulators and output data multiplexer (21);

power supply unit (voltage converter) (22) of the module;

block (23) of information and power supply interfacing with the backplane of the modular chassis of the interfacing device;

where the above blocks are connected to each other as shown in FIG. one.

Each discrete input module (11), regardless of module type, includes:

block of external interfaces for connecting discrete circuits (24);

block diagrams for the formation of response thresholds and comparators (25);

input register block (26);

power supply unit (voltage converter) (27) of the module;

unit (28) for information and power supply interfacing with the backplane of the modular chassis of the interfacing device;

where the above blocks are connected to each other as shown in FIG. one.

Each discrete output module (12), regardless of module type, includes:

block of external interfaces for connecting discrete circuits (29);

output register block (30);

power supply unit (voltage converter) (31) of the module;

block (32) for information and power supply interfacing with the backplane of the modular chassis of the interfacing device;

where the above blocks are connected to each other as shown in FIG. one.

In this case, the processor module (4) includes:

block of digital interfaces for connecting the MP module to an external communication network (33);

a computing core (34) including at least one processor and memory (operational and possibly non-volatile);

power supply unit (voltage converter) (35) of the module;

block (36) of information and power interface with the backplane;

where the above blocks are connected to each other as shown in FIG. one.

At the same time, the proposed modular device for interfacing with the “digital substation” process bus can be made on the basis of a modular chassis, for example, in the embodiment, as shown in Fig. 2, including installed peripheral modules of the following types:

"VT-P" - analog input module for voltage measurement inputs - for relay protection and automation purposes, "ST-R" - analog input module for current measurement inputs - for relay protection and automation purposes; "DI-L" - discrete signal input modules with a nominal voltage level of 24 V DC; "DI-H" - discrete signal input modules with a nominal voltage level of 220 V DC; "DO-L" - general purpose digital output modules; "DO-H" -discrete output modules for power circuit breaker control at the substation; "VT-M" - analog input module for voltage measurement inputs - for the purposes of measurement, metering and power quality control, "ST-M" - analog input module for current measurement inputs - for the purposes of measurement, metering and power quality control; "CPU" - processor module; "PWR" - interface device power supply modules. In this case (see Fig. 2) peripheral modules of the types "VT-P", "CT-P", "DI-L", "DI-H", "DO-L", "DO-H", "VT -M" and "ST-M" are made unified in terms of form factor, in particular, in terms of width, height and arrangement of fixing screws.

SOURCES OF INFORMATION

[1] Website http://www.epsa-spb.ru/npt_rtu_and_npt_micro_rtu_/.

[2] “Multifunction controllers NPT-M. Description of the type of measuring instruments ”(Appendix to St. No. 58949 on approval of the type of measuring instrument).

[3] RF patent for utility model No. 127966 (“MULTIFUNCTIONAL CONTROLLER NPT SERIES”).

[4] DPAV.421457.501TO “Multifunctional devices “depRTU”. Technical Description" (source of information - Internet site http://dep.ru/catalog/100/deprtu/, http://dep.ru/upload/iblock/903/depRTU-_-DPAV.421457.501TO.pdf) .

Claims (2)

1. Modular digital substation process bus interface device, consisting of a modular chassis equipped with a backplane containing slots that can be installed in any of the indicated slots of the power supply module, processor module, and peripheral modules, regardless of their type, a single unified communication and power supply bus, configured to provide information and communication interface of modules for full duplex data transmission, as well as power supply interface of modules with the backplane. 2. The interface device with the process bus of the digital substation is modular according to claim 1, characterized in that a single unified communication and power bus is configured to provide full-duplex data transmission in the direction both from individual peripheral modules to the processor module as part of the modular chassis of the device, and in the opposite direction, including the provision of the possibility of transmitting through the specified information bus both data of direct measurements of alternating current/voltage from peripheral modules, and discrete input signals from peripheral modules to the processor device module, and discrete output signals from the processor device module to peripheral modules of the discrete output.

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