SU1432820A2 - Device for monitoring redundancy generator - Google Patents

Abstract

This invention relates to an imp. This technique, in particular, can be used in synchronization and control devices for reserve iroi:; -:;, by their replacement method. The purpose of the invention is to increase the functionality of the control device. For this purpose, a reset driver 11, a noise counter 12, a switch relay 13, elements OR 14 and 16, an element 15 and new functional connections are introduced into it. In addition, the device contains And elements 1 and 8, counting, chick 5, generator of 6 pulses, RS trigger 7, element OR 9. 1 Il.

Description

SUBSTANCE: invention relates to a pulsed technique, can be used in synchronization devices, control, when reserving by replacing generators of an in-phase frequency grid, obtained by dividing the frequency of a backward generator with dividers with 1-G1, the division factors / and is an improvement the known device according to avt., no. 574848. The purpose of the invention is to expand the functions of the device by changing the capabilities of the device by eliminating

I commands to switch to reserve when

 single noise interference.

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The drawing shows a block diagram of the device.

The device contains an AND 1 element, output buses of channels 2–4 common-mode frequencies of a redundant generator, counter 5, generator 6 pulses, RS flip-flop 7, element AND 8, element OR 9, bus 10 controlling a reserve switching commutator, reset generator 11 , noise counter 12, kip-relay 13, element OR 14, element 15, element OR 16, terminal Reset 17, Element I 1 codes are connected to channels 2–4 of the common-mode Frequency of a redundant generator, and output terminal I 1 is connected to the input Installation About counter 5, generator output 6 pulses - with a counting input; the counter 5 and the input of the reset shaper 11, the S-input of setting the RS-flip-flop 7 to one state is connected to the output of the first discharge of the counter 5, the R-input of the setting to the zero state of the RS flip-flop 7 is connected to the output of the OR element 16, the output of the penultimate bit of counter 5 is connected to the second input of the IL 16 element, the output of the unit arm of the RS flip-flop 7 is connected to the first input of the AND 8 element, the second input of which is connected to the output of the And 1 element, the output of the And 8 element is connected to the first input: the element OR 9, the second input of the last - with the release of the last bit: etchika 5, and the output of OR 9, - with a first input of AND gate 15, reset shaper output is connected to per- BbJM input OR gate 14 ,, yield

which is connected to the installation input

 About counter 12 interference, the input after soyoin zenen with the output element And 15, the second input of which is connected to

Q

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0 5 0 Q

O

five

the inverted output of the kipp-relay 13, the output of the noise counter 12 is connected to the reserve switching bus 10, the reset signal terminal 17 is connected to the second input of the OR 4 element and the first input of the OR 16 element and to the kipp-relay 13 input,

The device works as follows.

During normal operation of the controlled generator, the inputs of the And 1 element receive common-mode signals from the output buses of the channels 2-4 of the frequencies of the redundant generator. The signal from the output of the AND 1 element is removed, the frequency of which is equal to the smallest of the frequencies of the signals fed: to its inputs. The output signal of the ANDI unit zeroed the counter 5, the input of which receives the generator 6 pulses (self-oscillating multivibrator), the frequency of the generator 6 pulses and the number of bits of the counter 5 being determined from the condition of the time location of the zero pulse between the transfer pulses of the second to last and last bits counter during normal operation of the redundant generator.

The transfer signal of the first bit of the counter 5 sets the RS-flip-flop 7 to the single state, which is transferred to the zero state by the transfer signal of the second-to-last bit of the counter 5 fed to the R input through the OR 16 element. The single shoulder signal of the RS flip-flop 7 is fed to the input element And 8 and controls the passage of the signal from the output of element And 1 through element And 8. During normal operation of the redundant generator, the signal of the unit arm of the RS flip-flop ends before the signal from the output of element And 1 results in a signal the output of the element And 8 is missing. The element OR 9 combines the signals from the code of the last bit of the counter 5 and from the output of the element AND 8. Thus, during normal operation of the redundant generator, there is no signal at the output of element 11-1 9. In the event of a malfunction that leads to an increase in the frequency of the signal coming from the output of the element I 1, for example, a reduction in the division factor by two or more times, the transfer signal of the penultimate discharge of counter 5 is absent because the counter is zeroed earlier. RS trigger

7 is not set to zero, i.e. the signal of its single arm permits the passage of the signal from the output of the AND 1 element through the AND 8 and OR 9 elements.

In case of malfunctions resulting in a decrease in the frequency of the signal coming from the output of the element I 1, for example, an increase in the division ratio of the body dividend by a factor of two or more, a signal is generated at the output of the last discharge of counter 5 until a zero pulse of counter 5 appears, resulting in What it does:; a transfer signal appears at the output of the element OR 9.

When operating a redundant generator in real conditions, various kinds of single irregular disturbances are inevitable (regular periodic disturbance signals should be considered as a failure of the redundant generator) appearing at the output of element 9 and 9 and switching the generator to reserve. In order to prevent random switching, the signal from the output of the element OR 9 is fed to the switch control bus 10 through the noise counter 12. The division factor of the counter 12 is chosen to be 2 or more, based on the permissible noise immunity of consumers of the signals of the redundant generator. Thus, a single random interference does not cause switching to the reserve. In order for the single switching pulses not to accumulate in the counter 12, it periodically zeroes the output signal of the reset generator 11 through the OR element 14. The repetition period of the reset signal selects more periods of transfer of the counter 5 by an order and more When switching on and switching sets of the redundant generator as well as when switching frequencies of monitored signals due to the long response time of mechanical

 Device for monitoring a redundant generator auth. St. No. 574848, characterized in that, in order to expand its functionality, a reset driver, a noise counter, a Kipp relay, a second and third OR elements, a third AND element, a reset generator input are connected to the output of the pulse generator, and the first the input of the second element OR, the output of which is connected to the input of the installation in O of the noise counter, the input of which is connected to the output of the third element I, the first input of which is connected to the output of the first element SH1I, the second input to the inverse output of the kipp-relay, the output of the counter connected to the bus switching to standby, the second input of the second OR gate coupled to Kipp-switch input, the first input of the third OR member and klempereklyuchateley and uncertainties

the moment of switching on (.transfer) by Reset, the second input of the third

By means of a control, an OR-source element is generated. A forward switching signal is connected to the output. , the last digit of the counter, and the wiring of the blanking of such signals is the input with the R-input of the RS flip-flop.

the control device is inputted to a kip-relay 13, triggered from the Reset signal, the output signal from the inverse output of which is fed to the second input of the element 15. The duration of the blanking pulse is chosen to be no less than the starting time of the mechanical switches.

The Reset Signal includes pulses from turning on the power, turning on (switching) sets of the redundant generator and; rpuls from manual reset button. It sets the initial (zero) state of the RS flip-flop 7 and noise counter 12, which at the time of turning on the power and switching the sets can be in any state. The reset signal enters the input of the zero-state setting of the counter 12, via the OR 14 element, the R-input of the RS flip-flop 7, the Reset signal enters through the OR 16 element.

Claims (1)

Invention Formula  Device for monitoring a redundant generator auth. St. No. 574848, characterized in that, in order to expand its functionality, a reset driver, a noise counter, a Kipp relay, a second and third OR elements, a third AND element, a reset generator input are connected to the output of the pulse generator, and the first the input of the second element OR, the output of which is connected to the input of the installation of the noise counter, the input of which is connected to the output of the third element I, the first input of which is connected to the output of the first element SH1I, the second input - to the inverse output of the kipp-relay, the output of the noise counter oedinen the bus switching on a reserve second input of the second OR gate coupled to Kipp-switch input, the first input of the third OR member and Clem