RU56676U1 - MULTI-PROCESSOR VOLTAGE CONTROL SYSTEM FOR BUS SECTIONS AND ELECTRIC TRANSMISSION AIR LINES - Google Patents

Abstract

The utility model relates to computing and measuring technology and is intended to perform the functions of monitoring, measuring, calculating and indicating the voltage of sections of 10 kV buses and 110 kV overhead lines. The purpose of the invention is the expansion of the functional and hardware capabilities of the system by introducing the functions of monitoring, measuring, calculating and indicating the voltage of the busbar sections 10 kV and overhead lines 110 kV, while maintaining the automation functions of the process of collecting information about the state of inputs, connections of the object of control and management, automation of collection , registration, analysis and storage of information about emergency processes, collecting diagnostic information from relay protection and automation units, as well as displaying all information on a common screen. A multiprocessor system contains three devices for interfacing with an object, an alarm unit, and a functional controller with a display. The proposed multiprocessor system can be used as a multifunctional fault-tolerant software and hardware complex for solving problems of controlling relay protection and automation devices.

Description

The utility model relates to computing and measuring technology and is intended to perform the functions of monitoring, measuring, calculating and indicating the voltage of sections of 10 kV buses and 110 kV overhead lines.

Known multiprocessor computing system [A.S. G 06 F 15/16 No. 1820391 B.I. No. 211993] containing N - processing devices (an analogue of the device for interfacing with an object), M - input-output devices and a storage device, the processing device comprising a computing unit, first and second shutdown units, a pulse shaper, a control trigger, and the AND element is used for solving various control problems, but does not have the functions of monitoring, measuring, calculating and indicating the voltage of the bus sections and overhead lines.

Multiprocessor computing system [A.S. G 06 F 15/16 No. 1805477 B.I. No. 12, 1993] containing N processing devices (an analogue of an object interface device) and N communication nodes, each processing device comprising a processing unit and two interface nodes with a trunk, each communication node containing nine AND elements, four OR elements, and a trigger It has ample reconfiguration capabilities for solving various problems, but also does not have the functions of monitoring, measuring, calculating and indicating the voltage of bus sections and overhead lines.

The closest technical solution is a multi-microprocessor relay protection and automation system with the display of information on a common display [Patent RU G 06 F 15/16 No. 49304 B.I. No. 31 2005] containing N processing devices, a device for interfacing with an object, a recorder of emergency processes and events, a functional controller with a display and a processor, the device for interfacing with an object containing a processing unit and two interface nodes with a trunk. The prototype has ample functionality for controlling various information processing processes, but also does not have the functional and hardware capabilities for monitoring, measuring, calculating and indicating voltage of bus sections and overhead lines.

The purpose of the invention is the expansion of the functional and hardware capabilities of the system by introducing the functions of monitoring, measuring, calculating and indicating the voltage of bus sections and overhead lines.

This goal is achieved by the fact that in the known system comprising a device for interfacing with an object and a functional controller with a display, the information inputs and outputs of the first group of the device for interfacing with an object connected to the first group of information inputs and outputs of a functional controller with a display, information inputs and outputs of the second group device pairing with the object is the first group of inputs and outputs of the system, the second group of inputs and outputs of which is a group of inputs and outputs of the processing node, the first I and the second group of inputs of which is the first and second groups of inputs of the system, the second group of information inputs and outputs of the functional controller with the display is the third group of inputs and outputs of the system, the fourth group of inputs and outputs of which is the third group of information inputs and outputs of the functional controller with the display, two devices for interfacing with the object and an alarm unit have been introduced, the alarm unit having two buttons, eleven diodes and nine lamps, the first groups of information inputs the o-outputs of the second and third interfaces to the object are connected to the first group of information inputs and outputs of the functional controller with a display, the information inputs and outputs of the second groups of the second and third interfaces to the object are the first group of inputs and outputs of the system, the second group of inputs and outputs of which is a group of inputs and outputs of the processing nodes of the second and third devices for interfacing with the object, the first and second groups of inputs of which are the first and second groups of inputs of the system, groups in odov-outputs of the first processing unit, the second and the third coupling device with an object connected to the first, second and third group of inputs - the signaling node respectively outputs.

Figure 1 shows the connection diagram of a multiprocessor voltage monitoring system with an air line and a bus section.

Figure 2 is an example implementation of a device for interfacing with an object (see prototype [Patent RU G 06 F 15/16 No. 49304 BI No. 31 of 2005] (a diagram is given for describing the operation of the system).

Figure 3 is an example of the implementation of the blocks of galvanic isolation and preliminary scaling of the input signals in the form of current and voltage (see prototype [Patent RU G 06 F 15/16 No. 49304 B.I. No. 31 2005] (the diagram is shown for description the system.) The diagram shows examples of the implementation of one of the galvanic isolation and preliminary scaling of the input signals in the form of current and voltage from the total number of galvanic

decoupling and preliminary scaling of the input signals, determined by the number of input analog current and voltage signals.

Figure 4 is an example implementation of a fragment of the signaling node circuit for two bus sections and two overhead lines.

Figure 1 marked:

1 ₁ ... 1 ₃ - device pairing with the object;

2 - processing unit;

3 - node interface with the highway (RS-232 interface);

4 - interface node with the trunk (RS-485 interface);

5 - functional controller [specialized PC (personal electronic computer)] or PC type RPC-1210/1212 manufactured by ICP Electronics Inc (iEi) or similar;

6 - display 12.1 "TFT Panel PC Ver. 2.0 company ICP Electronics Inc (iEi) or similar;

7 - processor WAFER-5822 Ver.2.2 by ICP Electronics Inc (iEi) or similar;

8 - signaling unit;

9 - overhead lines 110 kV;

10 - busbar sections 10 kV;

11 - a group of current signals from bus sections or overhead lines;

12 - a group of voltage signals from sections of tires or overhead lines;

13 - (RS-232 interface);

14 ₁ -14 ₃ - groups of inputs and outputs of the processing units, for communication with external devices (telemechanics system, sectional switch cabinet, automated system for monitoring and accounting for electricity, etc.), i.e. inputs and outputs of the discrete input-output device (UDVV);

15 - (RS-485 interface);

16 - group of inputs and outputs for communication with an external PC (channel RS-232);

17 - a group of inputs and outputs for communication with input-output devices.

Figure 2 marked:

18 - block galvanic isolation and preliminary scaling of signals in the form of current;

19 - block galvanic isolation and preliminary scaling of signals in the form of voltage;

20 - block frequency filters;

21 - analog-to-digital Converter processing unit;

22 - microprocessor control system for output relays and alarm in accordance with the protection algorithms of the processing node.

Figure 3 marked:

23 - operational amplifier of the measuring current transducer of the galvanic isolation unit and scaling the input signals in the form of current;

24 - operational amplifier of the measuring voltage converter of the galvanic isolation unit and preliminary scaling of the input signals in the form of voltage.

As operational amplifiers, you can use a chip such as QP177GP or similar.

R, R1 - resistors of type C2-33 or similar;

T - current or voltage transformers of the type TT-1T ... TT-5T, TN-1T or similar;

D - diodes of the type 2D510A or similar;

V1 - transistor type BD135 or similar;

V2 - transistor type BD136 or similar.

In figure 4 are indicated:

S1, S2 - buttons of type 8LM2T of the company "LOVATO" or similar;

L1 ... L9-type lamps SKL firm "PROTON-IMPULSE" or similar;

D1 ... D11 - diodes type RL-207 of the company "DC Components CO LTD" or similar;

U is the supply voltage.

Processing unit 2 and the galvanic isolation and pre-scaling unit of the signals in the form of current 18, the galvanic isolation and preliminary scaling unit of the signals in the form of voltage 19, the frequency filter unit 20, the analog-to-digital converter 21 and the microprocessor control system for output relays and signaling in in accordance with the protection algorithms of the processing node 22 can be implemented in accordance with the patent of the Russian Federation for the invention [Patent RU G 06 F 15/16 No. 49304 B.I. No. 31 of 2005] (Figs. 3-7) or [NN Chernobrovov, V. A. Semenov "Relay protection of energy systems" 1998, p. 778. fig. 22.4]. The drivers for 3 channels (RS-232) and 4 (RS-485) are located in the microprocessor system and are not shown in the diagram (see page 78). Detailed information about the operation of the node

processing and microprocessor systems are given in the patent and the literature on pages 778-783.

All of the above schemes are given to describe the operation of the system.

The figures do not show the operational power supply circuits of the system with switches and switches, test blocks through which phase currents and voltages from current transformers and voltage of section buses and lines (which are also not shown), shunt resistors, as well as many hardware components like not affecting the operation of a multiprocessor system.

The multiprocessor system contains three interfaces to the object 1 ₁ ... 1 ₃ , a functional controller 5 with a display 6 and an alarm unit 8, each interface to the object 1 contains a processing unit 2 and two interface units to the trunk 3 and 4, the alarm unit 8 contains two buttons S1 and S2, eleven diodes D1 ... D11 and nine lamps L1 ... L9, information inputs and outputs 15 of the first group of devices for interfacing with object 1 are connected to the first group of information inputs and outputs of functional controller 5 with display 6, information inputs-in the moves 13 of the second group of the device for interfacing with the object 1 are the first group of inputs and outputs of the system, the second group of inputs and outputs of which is the group of inputs and outputs of 14 processing nodes 2, the first 11 and second 12 groups of inputs of which are the first and second groups of inputs of the system, the second a group of 16 information inputs and outputs of a functional controller 5 with a display 6 is a third group of inputs and outputs of a system, a fourth group of 17 inputs and outputs of which is a third group of information inputs and outputs of a functional con roller 5 with a display 6, a group of inputs-outputs 14 of the first processing unit 2 January _1, January ₂ second and third March ₁ interfaces with an object connected to the first, second and third group of inputs - outputs alarm unit 8, respectively.

The device pairing with the object 1 ₁ ... 1 ₃ (figure 2) in a multiprocessor system reserve each other in case of failure and implement the following functions:

- measurement, calculation and indication of phase and linear voltages of tire sections and overhead lines;

- measurement, calculation and indication of the symmetrical voltage components of the tire sections and overhead lines;

- measurement, calculation and indication of the frequency of the supply voltage of the bus sections and overhead lines;

- monitoring the health of voltage transformers in sections of tires and overhead lines;

- insulation control of tire sections and overhead lines;

- Overvoltage control 3U ₀ sections of tires and overhead lines;

- control of voltage deviation of tire sections and overhead lines;

- oscillography of emergency processes, and work as follows:

the signals from the primary current and voltage transformers of the overhead lines 9 and bus sections 10 are fed through the resistors R to the intermediate transformers T of the galvanic isolation units and preliminary scaling of the input signals in the form of current and voltage 18 and 19 (Fig. 3).

Intermediate transformers T provide galvanic isolation and preliminary scaling of the input signals. The primary windings of transformers provide the specified thermal stability during overloads. Precision amplifiers implemented on microcircuits 23 and 24, diodes D, resistors R, transistors V1 and V2 are used to accurately scale signals and match the impedances of intermediate transformers and an analog-to-digital converter. From the outputs of precision amplifiers, the signals are fed to the inputs of the analog filters of the frequency filter unit 20. Low-pass filters pass current and voltage components of a certain frequency and do not pass high-frequency harmonics, which are interferences that distort the sinusoid of the current and voltage. Next, the analog signals are fed to an analog-to-digital converter (ADC) 21 to change the waveform to discrete (digital), because subsequent signal processing will be performed by digital microcircuits. The input filtered signals are fed to the multiplexer 27 (Patent RU G 06 F 15/16 No. 49304 Bull. No. 31 10.11.2005 - Fig.7), which makes a serial connection of the input of the ADC 28 to one of the channels of the block of frequency filters 20. All work analog -digital converter 28 is controlled by a microprocessor device 29, which provides digital filtering of input signals, calculation of secondary electrical parameters of the network and the implementation of self-diagnosis procedures, and also supports exchange with a microprocessor control system of output relays and

alarm in accordance with protection algorithms 22 through the buffer registers 30 (Fig.6 of patent No. 49304).

Thus, the microprocessor control system of the output relays and the alarm in accordance with protection algorithms 22 receives the values of the electrical parameters of the bus sections and overhead lines from the analog-to-digital converter 21 and information about the status of the digital inputs from the air-conditioning system. Based on this information, as well as the values of program keys and settings stored in the EEPROM, measurements, calculations, control, oscillography are performed and control and signaling commands are generated in accordance with program algorithms that are sent via channel 14 to signaling unit 8 and to objects control and signaling. In addition to performing the above functions, the central processor of the microprocessor control system for output relays and alarm in accordance with protection algorithms [N.N. Chernobrovov, V.A.Semenov "Relay protection of energy systems", 1998, p. 78, Fig. 22.4] provides an exchange with a personal A computer through a node for interfacing with a trunk (driver) 3 and with a functional microcontroller 5, through a node for interfacing with a trunk (driver) 4. More detailed information on the operation of a microprocessor-based control system for output relays and signaling in responsible with the protection algorithms presented in [N.N.Chernobrovov, V.A.Semenov "Relay protection of power systems" 1998 str.778 -783].

All measurement and calculation results received in the functional microcontroller 5, in accordance with a specific program, are displayed on display 6.

When voltage transformers malfunction in the bus sections 10 and overhead lines 9, insulation breaks and voltage exceeds 3U ₀ , from processing nodes 2, devices for interfacing with the object 1 ₁ ... 1 ₃ , through channels 14 ₁ , 14 ₂ , 14 ₃ v signaling unit 8 (Fig. 4), signals are received through which signal lamps L1 ... L8 are lit with banners:

- "MALFUNCTION VT No." - malfunction of the voltage transformer of the corresponding bus section or overhead line;

- "INSULATION CONTROL №" - insulation in the corresponding section of tires or overhead line is broken;

- "EXCEEDENCE 3U ₀ NO." - The voltage 3U ₀ in the corresponding bus section or overhead line has been exceeded.

At the same time, from processing nodes 2, interfaces with the object 1 ₁ ... 1 ₃ , through channels 14 ₁ , 14 ₂ , 14 ₃ to the alarm node 8, diodes D9 and D10 receive signals “CALL” or “FAILURE / FAULT” "through which the L9 signal lamp is lit with the" CALL "banner, signaling a malfunction in the corresponding section of the tires or overhead line indicated by the corresponding lamp L1 ... L8.

In the alarm unit 8, the S1 button is used to acknowledge (reset) the alarm, the S2 button is used to regularly check the lamps, because the failure of any of them does not allow to quickly diagnose a malfunction in the tire sections or overhead lines.

Thus, a multiprocessor system has advanced functional and hardware capabilities since provides:

a) measurement, calculation and indication:

- phase and linear voltages of tire sections and overhead lines;

- symmetrical voltage components of tire sections and overhead lines;

- the frequency of the supply voltage of the tire sections and overhead lines,

b) control:

- serviceability of voltage transformers of sections of tires and overhead lines;

- isolation of tire sections and overhead lines;

- excess voltage 3U ₀ sections of tires and overhead lines;

- deviations of voltage sections of tires and overhead lines, as well as displaying all the necessary information on a common display, recording information about emergency processes and events, etc. while maintaining all the functions of the prototype.

Claims (1)

A multiprocessor system for monitoring the voltage of bus sections and overhead lines, comprising an object interface device and a functional controller with a display, the information inputs / outputs of the first group of the object interface device being connected to the first group of information inputs / outputs of the functional controller with a display, information inputs / outputs of the second groups of the device for interfacing with the object are the first group of inputs / outputs of the system, the second group of inputs / outputs of which is a group of inputs / outputs of the node and processing, the first and second groups of inputs of which are the first and second groups of system inputs, the second group of information inputs / outputs of the functional controller with the display is the third group of inputs / outputs of the system, the fourth group of inputs / outputs of which is the third group of information inputs / outputs of the functional controller with a display, characterized in that two interface devices with an object and an alarm unit are introduced into it, the alarm unit comprising two buttons, eleven diodes and nine l amp, and the first group of information inputs / outputs of the second and third interfaces to the object are connected to the first group of information inputs / outputs of the functional controller with a display, the information inputs / outputs of the second group of the second and third devices to interface with the object are the first group of inputs / outputs of the system, the second group of inputs / outputs of which is a group of inputs / outputs of processing units of the second and third devices for interfacing with the object, the first and second groups of inputs of which are the first the second and second groups of inputs of the system, the groups of inputs / outputs of the processing units of the first, second and third devices for interfacing with the object are connected to the first, second and third groups of inputs / outputs of the signaling node, respectively.