JPS58176000A - Excitation controller for synchronous machine - Google Patents

Abstract

PURPOSE:To improve the reliability of a generator at the operating time by varying the operating point of a low excitation limiter in response to normal or abnormal state of a power system stabilizer. CONSTITUTION:An automatic voltage regulator 5 controls an exciter 3 in response to the deviation between the outputs of a voltage detector 4, a power system stabilizer 7 and a low excitation limiter 8 and the reference voltage from a reference unit 51. The operating point of the limiter 8 is switched in cooperation with a defect monitor 73 of the stabilizer 7. In other words, when the stabilizer 7 is normal, the operating point of the limiter 8 is release to increase the power system stabilizing function, and when the stabilizer 7 becomes defective and is disconnected, the operating point of the limiter 8 is returned to the normal value. In this manner, the reliability of the generator at the operating time can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a synchronizing plate 1 @ control table 1, particularly a small sister control lj table 1 which has the dual advantages of a low limit table 1 and a power system stabilizing device.

My younger brother 11 is an example of an alternating current generator equipped with this conventional device.
Kabuto-plate, (2 no is the edge of that world, (3J is this world end volume #M < 2), a kalpa system that adjusts the strength of the force, (April, the above-mentioned contact point turtle (1) ), the voltage detection unit (5) detects the output voltage (output voltage) of the
In order to adjust the terminal cage ratio of J to Wκ, the table for adjusting the pressure of the own sea bream is as follows.
Compare the output of the voltage detection section (4) and the base pressure,
Control the magnetic display (3) according to the vehicle. (6
) is the electric power detection unit that detects the electric heating output (or chest wave number) of the upper AC generator (υ), and (7) is the katato thread safety running device.
The output of the power detection section (6) is converted into a signal for urgent gain control and phase increase, and the signal is given as an auxiliary signal to the upper automatic pressure adjustment device. No. 8 is the low excitation limit table ▲. Give it as a low excitation limit signal to one set-up (5).

The above automatic voltage adjustment section - (June, to the above AC address - I 11
), which generates the target voltage of the terminal voltage (1), the amplifier part A which amplifies the deviation between the above reference ratio and the terminal voltage, and the output to the above amplifier part and the low excitation. Unification of restrictions (8
), the amplifying section BM further amplifies only the signal toward the magnetization of Toraraka Itto and generates a signal that controls the Joki Hoso I-Sou (3). The main component is the tamping sleeve compensation section for obtaining the tamping sleeve.

The ratio table k(7) for the above power grid female is the above power detection -(6
) removes the rip μ of the output and extracts only the anti-red sea bream component, and a Kane filter converts the output of the filter to a filter with uniform gain characteristics and phase characteristics. Phase - Intrusion part 1, upper distribution'in phase'mM
If you look at the outputs of if7 and so on, you can detect this, and the upper eye 11kI-1+knee transfer-(C1 to b7) cut the h 411 hall and the faulty 1-viewer-etc. It is ikk as the main Kaname Makinari.

Next, we will explain the production of the conventional kaisei-hatsu'#Mt-ka's seijun scissor blood based on the lead diagram. Now, the terminal voltage ratio of the alternating current generator (1) is detected at the operating voltage plate (4). base t
s voltage, and its deviation is determined by the amplifying section A- and the amplifying section B.
The excitation table -(31) adjusts the excitation voltage of 2J by this control, and controls the terminal wL ratio of the alternator (1). A series of manufacturing operations are carried out continuously until the deviation between the reference voltage ratio and the terminal voltage reaches the target value of 1 k@(13), and the terminal voltage of the AC source 1k@(13) is maintained at the target value. Also, the father generalization of load rotation ψ *
A platform whose reactive power of h<υ is smaller (or on the advancing side),
Low dynamic magnetic limiter - (8) is magnetized (No.
, low excitation is limited by maintaining the magnetism i of the field winding (2) via the brain AI device (3).

On the other hand, the intersection and origin axis of the rotation instep (IJ), the power movement detected in the power detection luck (the power reaction detected at the time is the power stabilization% 11i (July, only the fluctuation) Hakuchio-
The field width is repulsed by the signal with the desired gain characteristics and phase characteristics, and the excitation arm of the field winding h (2) is Increase the suppression effect of the electric power kJJ width by increasing the electric torque (especially the electric torque) of 17.
In this case, the late lI41 monitoring W6 Fit is changing the output of the 4 adjustment part (2) to the gain and phase '#, and is there something wrong? At the time of t5, the control signal given to the automatic ``pressing mode'' (115) is cut off.

Conventional low motion m! Ib1J sulfur control that exceeds the IJ limited voltage and load system safety ratio table! In the L installation, as mentioned above, by decreasing #V of the excitation cover of the field winding and the lifting platform with electric power and light pressure, the electric power of the Kabuto electric reconnaissance is naturally suppressed.

'#iIL passing, the reactive power will also increase or decrease, and the reactive power will decrease (or advance @) shi according to the output signal of the sword woman's foot, and the platform will be reduced to the low limit value.

If you are trying to increase the excitation cover of the field winding with a low dynamic sulfur restriction device, the power stabilization device will operate in conflict with the black 1, which causes the power stabilization system to increase. The effect is inhibited.

This button light is intended to eliminate the drawbacks of the above ones,
The lifting platform, which is conveniently used for power supply control, increases the power stabilization function by escaping the operating point of the low excitation limiter, and prevents the power supply control device from shutting off due to failure. The purpose is to provide moxibustion with a device that has the function of automatically returning the operating point of the low FJJJi restriction device to - when it is energized.

An embodiment of this invention will be described below.

In Part 2-, (2) is the failure monitoring unit of the turtle force stability ratio table,
(8) is a low F1jJ magnetic @limiting device, and this failure monitoring sga and separately excited & i limiting device (8) are interlocked so that they are turned off.The AC generator (1) is parallel to the system. Power stability ratio table during load operation! (In July, an abnormal noise occurred and the failure monitoring department (
2) and automatically disconnects the output signal of the electric power Anshiba Hitoden (7) to the automatic voltage adjustment unit, and at the same time automatically returns the setting of the low excitation limiter (8) to the uniform value.

By the way, above! c! In the embodiment described above, the case where the power stabilizing device breaks down has been explained, or it may be automatically switched by using the power stabilizing ratio table or excluding the power stabilizing device.

As described above, this ah effect increases the effectiveness of the restraining arm of the tortoise dynamo when it is actually used as a stabilizer, and m
Force stability ratio table - Since the low 1aiJ & limit function increases in the event of a failure, reliability during Marugame machine operation increases.

[Brief explanation of the drawing]

Figure 1 shows a conventional first-generation machine equipped with a fixed power ratio display and a low motion & restriction device. Figure 2 shows the movement of the excitation-controlled scissor-turtle, which is equipped with a low-excitation sleeping scissor and a low-excitation-control scissor cage, in order to improve the strength of the tortoise force in accordance with one example of this invention. show. In the figure, (1) is the alternating current generator, (2) is the exciter, (4) is the exciter, (April is the Kamehimei Ide part that detects the terminal voltage, and (6) is the automatic voltage adjustment. On the surface, the reference part that outputs the ultimate voltage, -c increases msA, w increases l1iths it,
1541 H/ mbing section, (@) is power detection section,
(July, turtle force stabilization surface wrinkles, (7 illusions are fiber μter cotton, (2
) is a gain phase adjustment section, 7th column is a failure imaging section, and (8) is a low magnetism limiting device. Note that the same reference numerals in each figure represent the same or equivalent parts. Trust in the agent

Claims (1)

[Scope of Claims] (υIn the excitation control scissors for a synchronous machine equipped with the two swords of a low dynamic ki limit table that limits low excitation of a first-stage machine and a tortoise power system stability table that suppresses power a loss, When the above-mentioned power system stabilization device is used in a silent state, and when the output to the above-mentioned 1 magnetic control device is cut off due to failure of this single-power system stabilization device k, the above-mentioned low An excitation control plate for a synchronous machine, characterized in that the above-mentioned electric power system filter and externally excited ki limiter are linked together so as to automatically improve the operating point of the 411i limit i wrinkle. (2) The claimed invention is characterized in that the operating point of the low motion & restriction device is automatically improved when the upper power system female standardization device is used and when the platform is not used. An excitation control device for a synchronous machine according to scope 1.