SU434176A1 - METHOD OF REGULATING TURBO-AGGREGATE - Google Patents

Description

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The invention relates to energy and can be used in the regulation of turbomachines.

There are known methods for adjusting a turbine unit by applying to the executive body a signal proportional to the speed error and a given power, and the integral signal from the speed error and the difference between the set and actual mosh:

In this case, the large inertia of the integral signal leads to increased control errors in the transient process with a deviation of the control characteristic from the linear one.

The purpose of the invention is to increase the accuracy of regulation in the transition process.

For this, the proportional and integral signals are multiplied, the resulting product is summed with the proportional signal and then fed to the executive body.

The drawing shows a diagram of the implementation of the method.

It contains the Control Object (turbine unit) 1, the executive body 2 of the speed regulator, multiplication unit 3, integrator 4, adders 5 and 6, the sum of 7 signals; in the speed error and the power setting; signal 8, the actual-power.

When the unit operates with a network, a proportional signal is formed from the sum AY

the speed error and the power setting RL and feed it to the adders 5 and 6 and the multiplication unit 3. The adder 5 is also given a signal of the actual power of the RF aggregate. In this case, the signal at the input of the executive body is equal to

i

(Li) + yaz). (one)

s 1+ | (Dso4-Rz- / Ef) o;

The actual power value will be determined by the expression

RF fe l + I (Dso + RZ - Yaf) X L ОJ

X (A "+ RZ). (2)

where the coefficient k depends on the properties of the energy carrier and changes relatively slowly.

Since in the steady state the integrand is zero, then

Russia: DS - | -RZ (3)

And, as follows from (2), the equality should be

 1 + J (D «+ RZ Rf} dt

(four)

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Since the coefficient / g is determined by the properties of the energy carrier and changes relatively slowly, the transition from one mode of power to another equals 4, does not change. As follows from Formula 2, the linearity of the regulatory characteristics 3 and, consequently, the above-mentioned speed and power adjustments will be observed in dynamic modes.

Subject invention

The method of adjusting the turbine unit by applying to the executive body a signal, a prodional speed error and a given power, and an integral signal from the speed error and the difference between the specified and actual powers, characterized in that, in order to increase the accuracy of adjustment in the transient process, the proportional and integral signals are multiplied The resulting product is summed up with a proportional signal and then fed to the executive body.

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