SU481099A1 - The method of automatic voltage regulation in the power system - Google Patents

Description

, the power system, the voltage in which is also higher than the allowable limits, and the regulatory possibilities are completely exhausted.

In order to prevent the PC processor from running on the CDP during random and short-term oscillations of the pair, the delay blocks (integrating links) B3i n BZg are connected to the circuit.

The dapia circuit is also intended for decentralized control of the controller. The LU changes the settings of the LRI automatic voltage regulator in cases where the source is not overloaded, and find the voltage in the specified limits, or if the voltage is out of allowable limits without the source. The deviations of voltages in co-nitrated nodes over the permissible limits are transformed into an innulum form by an ADC converter and transmitted to communication channels in the control unit of the UAC on the CDS. Using the switch Ki, these signals are periodically input to the processor. Converter P; converts a nm-pulsed code into a mobile one.

Admitted to the UHC, the disruptions are transformed into speckles.

, + EP /; A;

DU,: - A: ° (R,), / SDL)

K, (. (

wed

e A y ,: and D US -directive damage in the t-th node and in the system as a whole, respectively, due to the elimination of the non-permissible voltage deviation in (-M node;

TO, - is the magnitude of the voltage deviation in the gth node to the maximum of permissible limits;

6

the mean value of the mean is in the gth node;

/ So (/ About

-coefficient determining the dependence of the damage in the t-M node on the size and nature of the load;

di

-coefficienit sentimenteldUi

Nostn nanrenzhen in the / -th node when changing iair gepi in the J-M node.

dUj

Ki (Pi) and matrix functions

dU,

are read in advance for the various I modes stored in the memory blocks of the ACU UVC.

The increments obtained are compared in a UHC processor and then the node with the maximum value of the damage pattern is searched for.

71l of the selected node number on the characteristics of the paradigm 1ggs nose, zedovat, 1 nost nstochppkov adjuster voltage, focus on cteeriin um1n schenpp magnitude) / Ui / AQj, BEFORE, --- izmeiepepeanr same m / n node and the generator of the reactive copying in the knot n; i; The matrices of sensitivity coefficients and ordering of data are computed in advance and stored in blocks of memory UVK.

UVK generates a control signal, which is converted by the P2 converter into impulse form, and through the K2 switch over the communication line, you do not send to the polling authority of the LRP controller of the first setpoint from the list. The DAC block is used to convert the imprint enriia.ia into a continuous one.

After changing the setpoint, the coptrol cycle is repeated. The regulation is changed in steps until the elimination of an unacceptable voltage drop or the exhaustion of the adjustment possibilities of the nerve source is eliminated. In the last case, the setting of the second source of the setpoint, tedovatel (), and so on begins to change.

With the exhaustion of the adjustment capabilities of all pstachpikov the choice of the sequence is generated, the need for a network of adjustments rasire, alepi active power.

The correction of the mode but actively mono-network oui1 is described in the following way.

Depending on the node with the maximum increment of damage and the characteristics of the mode, the succession of sources is determined, the order of magnitude of the decrease in the value of L / ili Pj (is the change in voltage at the (-th node when the active load is changed from the / -th source of DR) ;;). Matrices

,;

And ordered sequentially

DR;

sources are determined to be different for different modes and stored in the memory blocks of the UVK. With the help of the control pulses, the cusp is detected in successive discrete steps of the correction of the power system mode according to the active power in the same way as described. The correction lasts until the elimination of unacceptable voltage variation or until the adjustment possibilities are exhausted. The magnitude of the step of varying the load of the sources and the duration of the adjustment cycle is chosen, in view of the necessity of bleaching the aperiodicity of the transitioned process.

PRIORITY AREA

Claims (2)

1. The way of automatic control of the power supply system in the power system by centralized changing the settings of reactive power sticks depending on the deviations of the power supply in the control of each node and converting voltage deviations into signals proportional to the increments of damage, which are different in order to increase the quality voltage, compare the received signals of the increment up1, the arms and the changes of the settings of the sources of reactive power, starting from the source for which the ratio of the change voltage at the node with the maximum value of the increment signal Unbalance to the magnitude of the change in reactive power is greatest. 2. The method of claim 1, so that in order to increase the quality of the voltage when it is impossible to further change the settings of the sources of reactive power, change the settings of the sources of active power, and the source from the source, for which is the largest change in the voltage at the node with the maximum value of the damage increment signal to the magnitude of the change in the active power of the source. R