JPH0822311A - Sequence monitor device and its driving method - Google Patents

Abstract

PURPOSE:To find latent abnormality of an equipment which causes sequence congestion in its early stage by monitoring the operation time of each sequence step each time the equipment to be controlled is started or stopped. CONSTITUTION:The device is equipped with a logic circuit 1-2 which detects the state of a current sequence step, a timer circuit 2 which generates an alarm signal unless an advance to a next sequence step is not made within a previously set congestion monitor set time, and a time counter 3 which counts the actual operation time of an equipment element up to the transition to the next sequence step. The integrated value SIGMAtp of the deviation of the actual operation time from the set time and integrated value SIGMAts of the deviation of an theoretrical operation time from the set value are calculated respectively each time the equipment to be monitored is started or stopped, and those integrated values SIGMAtp and SIGMAts are compared with each other; when the difference becomes larger than an expected value, or when the gradient of a function of the start/stop frequency and the integrated value SIGMAtp exceeds an expected value, an alarm signal is generated by a computing element 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a sequence installed in, for example, a hydroelectric power station, which monitors a state transition time of sequence steps at the time of starting and stopping a turbine generator and detects an abnormality of a device element leading to a sequence congestion. The present invention relates to a monitor device and a driving method thereof.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS. 1, 5 and 6.

FIG. 1 is a flow chart showing sequence steps in a starting direction from "operation command input" to "parallel" in a general hydraulic power plant, and FIG. 5 shows an operating state of equipment in each sequence step in the starting direction. FIG. 6 is a circuit diagram for monitoring and detecting operation congestion of a device, and FIG. 6 is a time chart showing a congestion detection operation of the circuit shown in FIG. 5.

As shown in FIG. 1, in this example, five points (1) to (5) are set as sequence step points for monitoring traffic congestion. That is, "enter operation command" (1), "open inlet valve" (2), "turbine speed 80"
% Or more ”(3),“ Generator voltage 80% or more ”(4),
For example, "parallel" (5).

Then, the transition time of each sequence step point from (1) to (2), from (2) to (3), from (3) to (4), and from (4) to (5) is set. When the sequence step points are monitored and the sequence step points do not transition within a preset time, it is determined that there is congestion.

A traffic jam detecting circuit for carrying out such a traffic jam detecting method will be described with reference to FIGS. 5 (a) and 5 (b).
Note that FIG. 5A is a circuit diagram showing a traffic jam detection circuit,
FIG. 5B is an explanatory diagram of FIG. Figure 5
In (a), 1-1, 1-2, 1-3, 1-4, 1
-5 uses each sequence state (mainly indicating the operation state of the activation control target device) as an input condition, and (1) to (2), (2) to (3), and (3 )
It is a logic circuit that detects which of the sequence step states from (4) to (4) and from (4) to (5).

The operation of each logic circuit will be described in detail. In the circuit 1-1, the output signal 1-1a is turned on when the "operation command is ON" and "parallel OFF". Therefore, in the sequence step state from (1) to (5) in FIG. 1, it is always turned on. In the circuit 1-2, the output signal 1-1a is ON
And, "Operation command ON" and "Inlet valve fully open OF"
Since the output signal 1-2a is turned on at the time of "F", it is turned on in the sequence step state from (1) to (2) in FIG. In the circuit 1-3, the output signal 1
Output signal 1-3a is ON when -1a is ON, "Inlet valve is fully open ON", and "turbine speed is 80% or more OFF".
Therefore, it is turned on in the sequence step state from (2) to (3) in FIG. Circuit 1-
4, the output signal 1-1a is ON and the “turbine speed 80
Since the output signal 1-4a is turned on to "ON or above%" and "OFF to or above 80% of generator voltage", it is turned on within the sequence step state from (3) to (4) in FIG. In the circuit 1-5, the output signal 1-1a is O
N and "generator voltage 80% or more ON" and "parallel OF"
Since the output signal 1-5a is turned on at the time of "F", it is turned on in the sequence step state from (4) to (5) in FIG.

In FIG. 5A, reference numerals 2-1 to 2-4 represent ON delay timers, and the time limit setting of each timer is given by tm1 to tm4. The operation of each timer will be specifically described. The timer 2-1 performs a time counting operation when the output signal 1-2a as an execution condition is turned on, and the alarm signal 2-1a when the time set value tm1 time is reached. Since the sequence step state from (1) to (2) in FIG. 1 is not transited to the sequence step state from (2) to (3) within the set time tm1 in FIG. 1, that is, sequence operation congestion Will be detected.

The timer 2-2 performs a time counting operation when the output signal 1-3a as an execution condition is turned on, and when the time set value tm2 time is reached, an alarm signal 2-2a is generated.
Therefore, the sequence step state from (2) to (3) in FIG. 1 does not transit to the sequence step state from (3) to (4) within the set time tm2 time, that is, sequence operation congestion. Will be detected.

The timer 2-3 performs a time counting operation when the output signal 1-4a as the execution condition is turned on, and when the time set value tm3 time is reached, the alarm signal 2-3a.
Since the sequence step state from (3) to (4) in FIG. 1 is not transited to the sequence step state from (4) to (5) within the set time tm3 time, that is, sequence operation congestion Will be detected.

The timer 2-4 performs a time counting operation when the output signal 1-5a as an execution condition is turned on, and when the time set value tm4 time is reached, an alarm signal 2-4a.
Since the sequence step states (4) to (5) in FIG. 1 are not completed within the set time tm3 hours, that is, sequence operation congestion is detected.

Generally, for the traffic congestion monitoring set times tm1 to tm4, the operation time in each sequence step state is measured by an actual operation test, and 1.2 times to 1.5 times the measurement time.
Set in the double range.

The traffic jam detecting operation in such a traffic jam detecting method will be described with reference to FIG. 6 by referring to the operations from sequence steps (1) to (2) shown in FIG. Figure 6
(A) is a time chart showing the case of normal operation of sequence steps (1) → (2). "Entering operation command"
When turned on, the time counting operation of the timer 1 is started.
If "inlet valve fully open" is turned on at time tn1 within the time set time tm1 of timer 1, timer 1 sets time set time tm1.
The alarm is not output because the time counting operation is stopped before reaching.

FIG. 6B shows a sequence step (1).
→ It is a time chart when a traffic jam occurs in (2). Similarly to FIG. 6A, the time count operation of the timer 1 is started by turning on the “operation command input”. If the "fully open inlet valve" is not turned on within the time set time tm1 of the timer 1, the timer 1 is timed up when the time set time tm1 is reached and an alarm is output.

The above is a description of the traffic jam detecting means and the operation in the starting direction, but generally, the same means is also used for traffic jam detection in the stopping direction (from "operation command cutoff" to "turbine generator complete stop"). And the operation is realized.

[0016]

However, in the above-mentioned traffic jam detecting method, (1) → (2), (2) →
(3), (3) → (4), (4) → (5) The time at which each sequence step point transitions is monitored, and if the sequence step point does not transition within a preset time, traffic congestion will occur. Since this is a determination method, an alarm is only issued after a traffic jam occurs, that is, after some abnormality occurs in a device element, and only so-called post-conservation measures can be taken.

The problem to be solved by the present invention is that since a warning is issued after a sequence congestion occurs (something abnormal in the equipment), only so-called post-conservation measures can be taken. Before detecting the error, the operation time of each sequence step is monitored every time the controlled device is started or stopped, so that a potential device abnormality leading to sequence congestion can be detected early.

[0018]

In order to solve the above-mentioned problems, the sequence monitor apparatus according to the invention of claim 1 has sequence steps from start to stop of the controlled equipment for which sequence control is performed. In the sequence monitor device for monitoring the operation state of the equipment element in the above, and detecting the operation congestion of the equipment element, the logic circuit for detecting the state of the current sequence step, and the next sequence within the preset congestion monitoring setting time. A timer circuit that issues an alarm signal when it does not transition to a step, a time counter that counts the actual operating time of the device element before transitioning to the next sequence step, the set time and the The integrated value Σtp of the deviation from the actual operating time and the integrated value Σts of the deviation between the set time and the theoretical operating time are Each calculated value is compared with each other, and the integrated values Σtp and Σts are compared, and when the difference is larger than a planned value, or the slope of the function between the number of times of starting and stopping and the integrated value Σtp is larger than the planned value. And an arithmetic unit for issuing an alarm signal in some cases.

According to a second aspect of the present invention, in the sequence monitor apparatus according to the first aspect, the controlled device is a hydraulic turbine generator of a hydroelectric power plant, and the sequence step for monitoring the operating state of the device element is "operation. Set each step from "commanded" to "inlet valve fully open", from "inlet valve fully open" to turbine speed above a certain level, then generator voltage above a certain level, and then parallel. However, the equipment elements monitored in each of the sequence steps are a waterway constituent equipment, a water turbine and its accessory equipment, a generator and its related equipment, or a system constituent equipment.

As the equipment elements to be monitored in the invention according to the second aspect, for example, in the sequence steps from "entering an operation command" to "fully opening the inlet valve", the waterway component equipment, particularly the mechanical element and the electric element of the inlet valve. Target element.

In the sequence steps from "fully opening the inlet valve" until the turbine speed becomes constant (for example, 80% or more), the guide vane is mainly used in the Francis turbine and the Kaplan turbine, and the deflector or needle is mainly used in the Pelton turbine. In addition, it also applies to drive equipment, its lubrication system equipment, and electrical systems such as governor systems.

In the sequence step until the generator voltage becomes constant (for example, 80% or more) after the turbine rotation speed reaches a constant value, an automatic voltage regulator, an excitation circuit, a rectifier, and a circuit breaker for initial excitation are used. And so on.

After that, in the sequence steps until parallelization, the automatic synchronizer, the guide vanes (or deflectors, needles, etc.), each circuit breaker, etc. are targeted.

In the present invention, since it is possible to detect the tendency before these various device elements actually become abnormal, it is necessary to stop the entire system due to the abnormality of the device elements and to carry out large-scale repair work. Can be prevented, and great advantages can be obtained in terms of time, cost, labor, and the like.

According to a third aspect of the present invention, there is provided a sequence monitor device driving method, wherein the arithmetic operation unit according to the first aspect is preliminarily set with the theoretical operating time of the device element and the traffic congestion monitoring setting time. The actual operating time obtained from the counter is input to the arithmetic unit, and the deviation between the traffic jam monitoring set time and the actual operating time is added up each time the controlled device is started or stopped, and the integrated value Σ
tp is compared with the integrated value Σts of the deviation between the traffic congestion monitoring set time and the theoretical operation time, and at the start / stop frequency point at which the integrated value Σtp is smaller than the integrated value Σts, a device abnormality signal is output. It is characterized by outputting.

According to a fourth aspect of the present invention, there is provided a sequence monitor device driving method, wherein the arithmetic operation unit according to the first aspect is preliminarily set with the theoretical operating time of the device element and the traffic congestion monitoring setting time. The actual operating time obtained from the counter is input to the arithmetic unit, and the deviation between the traffic jam monitoring set time and the actual operating time is added up each time the controlled device is started or stopped, and the integrated value Σ
tp is compared with the integrated value Σts of the deviation between the traffic congestion monitoring set time and the theoretical operation time, and the set value incompatibility signal is output at the number of start / stop times at which the integrated value Σtp is larger than the integrated value Σts. Is output.

According to a fifth aspect of the present invention, there is provided a sequence monitor device driving method, wherein the arithmetic operation unit according to the first aspect preliminarily sets the theoretical operating time of the device element and the congestion monitoring setting time, and the time period according to the first aspect. The actual operating time obtained from the counter is input to the computing unit, and the deviation between the traffic congestion monitoring set time and the actual operating time is added up each time the controlled device is started or stopped, and the interval between points with a certain number of times of starting and stopping is added. The device abnormality signal is output when the integrated value Σtp of the deviation between the traffic jam monitoring set time and the actual operation time in ∘ tends to decrease with an increase in the number of starts and stops.

According to the sequence monitoring apparatus and the driving method thereof according to the present invention, the time when each sequence step point transits is monitored, and when the sequence step point does not transit within a preset time, traffic jam occurs. In addition to the function of the conventional technique for determining that the accumulated value Σtp of the deviation between the traffic congestion setting time and the actual operation time each time the controlled device is started or stopped, and the deviation between the traffic congestion monitoring setting time and the theoretical operation time Since the values Σts are calculated, the integrated values Σtp and Σts are compared, and the tendency of Σtp is also monitored, it is possible to early detect a potential device abnormality leading to sequence congestion.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In addition, as shown in FIG. 1, the present embodiment relates to a sequence control for abnormality detection of a water turbine generator, of which representative examples are from “operation command input” (1) to “inlet valve fully open” (2). Only the traffic congestion monitoring in the sequence step state will be described. 2 (a),
(B) is a circuit diagram showing an embodiment of the present invention, the same parts as those in FIG. 5 used in the description of the conventional example are denoted by the same reference numerals, and duplicated description will be omitted. 3A and 3B are time charts for explaining the operation of FIG.
FIG. 3 is also a diagram for explaining FIG. 1.

As shown in FIG. 2, the sequence monitor apparatus of the present embodiment basically detects which of the current sequence steps in each sequence step from start to stop of the water turbine generator as the controlled equipment. Logic circuits 1-1 and 1-2, a timer circuit 2 which issues an alarm signal when a transition to the next sequence step does not occur within a preset traffic jam monitoring setting time, and device elements until the transition to the next sequence step Time counter 3 for counting the actual operating time, the integrated value Σtp of the deviation between the set time and the actual operating time each time the controlled device is started and stopped, and the integration of the deviation between the set time and the theoretical operating time. The respective values Σts are calculated, and the respective integrated values Σtp and Σts are compared with each other, and when the difference is larger than a predetermined value, or the number of start and stop times and the product Gradient of the function of the value Σtp is configured to include a computing unit 4 for issuing an alarm signal if it becomes larger than the predetermined value.

More specifically, in FIG. 2, each of the logic circuits 1-1 and 1-2 uses (1) in FIG. 1 as the input condition of each sequence state (mainly showing the operating state of the activation control target device). It is detected whether it is in the sequence step state from (1) to (2). The timer circuit 2 represents an ON delay timer, and the time limit setting of the timer is given by tm. The time counter 3 and the arithmetic unit 4 are provided in the subsequent stage of the logic circuit 1-2. The operation of the part excluding the time counter 3 and the arithmetic unit 4 is almost the same as that of the conventional device.

The output signal 1-2a of the logic circuit 1-2 is currently from "operation command input" (1) to "inlet valve fully open" (2).
The output signal 1-2a is input to the time counter 3. As shown in FIG. 2B, the time counter 3 starts counting time when the output signal 1-2a is turned on, the sequence step transitions to the next step, and the output signal 1-2a changes to the next step. The time counting is stopped when the power is turned off. Therefore, the time counter 3 calculates the actual operation time tn from “operation command input” to “inlet valve fully open” which is the sequence step state from (1) to (2).

Further, it is obtained from the actual operation time tn calculated from the time counter 3, the traffic jam monitoring time setting value tm which is the time limit setting value of the timer 2, and the actual operation time or the design value obtained during the actual operation test. The theoretical operating time tr and the theoretical operating time tr are input to the calculator 4. The calculator 4 calculates the integrated value Σtp of the deviation between the traffic jam monitoring set time tm and the actual operation time tn each time the turbine generator is started and stopped, and the deviation between the traffic jam monitoring set time tm and the theoretical operation time tr. Integrated value of Σ
Calculation of ts is performed.

Then, the integrated values Σtp and Σts are compared with each other, and Σtp is smaller than Σts at a certain start / stop number point (for example, a comparison is made every 10 start / stop). In this case, the device abnormality signal 4a is output. Further, if Σtp is larger than Σts at a certain start / stop count point (for example, comparison is performed every 10 start / stop counts),
The set value incompatibility signal 4c is output. In addition, there is a start,
Σtp between the points of a certain interval with a certain number of stoppages (for example, start-up, 10th stoppage, 20th, etc., every 10th start-up) starts the turbine generator,
If the number of stops tends to decrease as the number of stops increases, the device abnormality signal 4b is output.

Next, the sequence congestion monitoring method by the arithmetic unit 4 of this embodiment will be described in detail with reference to FIGS. 3 and 4.

FIG. 3 is a time chart in the sequence step state from (1) to (2) in one activation, and FIG. 3 (a) shows (actual operation time t
n> theoretical operating time tr), a time chart in the case of (actual operating time tn <theoretical operating time t
The time chart in the case of r) is shown.

The variable indicating the number of times the turbine generator is started is set to i, and the first start-up of the turbine generator is set to i = 1 when the apparatus of this embodiment starts operating. The actual operating time is defined by tni according to the number of activations, and the operating time when i = 1 is tn1. Congestion monitoring set time tm and theoretical operation time tr
Is a fixed value given in advance. The computing unit 4 calculates a deviation (tm-tni) between the traffic jam monitoring set time tm and the actual operation time tni every time the computer is started. Then, for every 10 times of starting of the water turbine generator, the following value which is an integrated value of deviations for 10 times, that is,

[Equation 1] Is calculated, and this is set as Σtp1. The integrated value of the deviations from the 11th time to the 20th time is set to Σtp2, and similarly (j−
1) Σtp the integrated value from the × 10th time to the j × 10th time
j. Further, the integrated value of the deviation between the traffic jam monitoring set time tm and the theoretical operation time tr is

[Equation 2] Is represented by Σts.

The traffic congestion monitoring method using Σtpj and Σts obtained above will be described below.

(1) A method of detecting an activation state in which the actual operating time is longer than the theoretical operating time, and early detecting a potential abnormality of the equipment leading to sequence congestion.

When the state of (actual operation time> theoretical operation time) as shown in FIG. 3A continues to be activated, (tm-t
Since there are many states in which the relationship ni) <(tm-tr) is satisfied, the integrated value also has the relationship Σtpj <Σts. If the actual operating time is monitored with a margin of about ± 5% of the theoretical operating time, the actual operating time tn becomes

(Equation 3) It will be acceptable until the time is exceeded. Generally t
Since m is set to 1.2 times tr, tr = 0.83 ×
tm relationship,

[Equation 4] Becomes

On the other hand, when the theoretical operating time including the tolerance of 5% is tr ',

(Equation 5) Therefore, the deviation between the traffic congestion monitoring set value tm and the theoretical operating time tr ′ including the tolerance is

(Equation 6) Is represented by

If the integrated value of theoretical operating times as a reference for comparison is Σts',

(Equation 7) Becomes

Therefore, Σtpj and Σts ′ are compared at the time of starting at any given j × 10 times,

(Equation 8) 2 is output, the "device abnormality signal" 4a shown in FIG. 2 is output.

In this case, since the set value may not be appropriate, the "set value incompatible signal" 4c is also output at the same time.

(2) A method of detecting an activation state in which the actual operating time is shorter than the theoretical operating time, and finding that the traffic jam monitoring time set value tm is not an appropriate value.

When the state of (actual operation time <theoretical operation time) as shown in FIG. 6B continues to be activated, (tm-t
Since there are many states in which the relationship ni)> (tm-tr) is satisfied, the integrated value also has the relationship Σtpj> Σts. If the actual operating time is monitored with a margin of about ± 5% of the theoretical operating time, the actual operating time tn becomes

[Equation 9] It will be acceptable until the time is exceeded. Generally t
Since m is set to 1.2 times tr, tr = 0.83 ×
tm relationship,

[Equation 10] Becomes

On the other hand, if the theoretical operating time including the tolerance of 5% is tr ',

[Equation 11] Therefore, the deviation between the traffic congestion monitoring set value tm and the theoretical operating time tr ′ including the tolerance is

(Equation 12) Is represented by

If the integrated value of the theoretical operation time as the comparison reference is Σts',

(Equation 13) Becomes

Therefore, ΣtpjΣts ′ is compared at the time of starting every arbitrary j × 10 times,

[Equation 14] 2 is output, the “setting value incompatibility signal” 4c shown in FIG. 2 is output.

(3) A method of detecting that the actual operation time is becoming longer with the increase in the number of times of start-up, and early detecting an abnormality of a potential device element leading to sequence congestion.

When the actual operation time becomes longer with the increase in the number of startups, Σtpj becomes shorter on the contrary. Therefore, Σtpj (j = 1, 2, 3, 4, ...) Is stored at every 1 × 10 times of turbine generator startup, and as shown in FIG. 4, the horizontal axis is the number of startups and the vertical axis is Σtpj. Expand to graph.
If there is no abnormality in the device element, the regression line drawn as shown in FIG. On the other hand, if the device element has a potential abnormality that leads to sequence congestion, a regression line is drawn as shown in FIG. Therefore, when the slope of this straight line descending to the right is larger than the predetermined value, the "apparatus abnormality signal" 4b shown in FIG. 2 is output.

In the above embodiment, only the congestion monitoring in the sequence step state from (1) to (2) in the starting direction shown in FIG. 1 has been described, but from the other sequence step state, that is, from (2). Until (3)
It is possible to carry out traffic congestion monitoring in the same manner for (3) to (4) and (4) to (5) and also in the stopping direction.

Further, in the above-mentioned embodiment, the turbine generator is applied as the controlled device to be the subject of the sequence monitor according to the present invention, but the present invention is not limited to this, and is applied to other generators, plant devices and the like. be able to.

[0054]

As described in detail above, according to the present invention, the integrated value Σtp of the deviation between the traffic monitoring set time and the actual operating time for each start and stop of the controlled device, and the set time and the theoretical value. The integrated value Σts of the deviation from the operation time is calculated, these integrated values Σtp and Σts are compared, and when the difference between Σtp and Σts is larger than the planned value or the tendency of Σtp is monitored, start / stop When the slope of the function of the number of times and Σtp becomes larger than the planned value, an alarm is issued, so that a potential equipment abnormality leading to sequence congestion can be detected early, especially for hydroelectric power generation at hydroelectric power plants. When applied for machine control, excellent effects are exhibited.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention and showing sequence steps in a starting direction when applied to a water turbine generator.

2A is a block diagram showing an embodiment of the present invention, FIG.
(B) is an explanatory view of the symbols used in (a).

FIG. 3 is a time chart for explaining the operation of the present invention, where (a) shows a case where the actual operating time is longer than the theoretical operating time, and (b) shows a case where the actual operating time is shorter than the theoretical operating time. Are shown respectively.

FIG. 4 is a diagram for explaining the operation of the present invention, (a)
Shows a change of the integrated time Σtp when the device is normal, and (b) shows a change of the integrated time Σtp when the device is abnormal.

5A is a block diagram showing a configuration example of a conventional sequence monitor device, and FIG. 5B is an explanatory diagram of symbols used in FIG.

FIG. 6 is a time chart for explaining the operation of a conventional sequence monitor device, in which (a) is the normal operation of sequence step (1) → (2), and (b) is the sequence step (1) → ( The cases where traffic congestion occurs in 2) are shown below.

[Explanation of symbols]

 1-1 circuit 1-1a output signal 1-2 logic circuit 1-2a output signal 1-3 logic circuit 1-3a output signal 1-4 logic circuit 1-4a output signal 1-5 logic circuit 1-5a output signal 2 Timer 3 Time counter 4 Arithmetic unit 4a Equipment error signal 4b Equipment error signal 4c Setting value incompatibility signal

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G05B 23/02 302 V 7531-3H

Claims (5)

[Claims] 1. A current sequence step in a sequence monitor device for monitoring an operating state of a device element in each sequence step from start to stop of a controlled device for which sequence control is performed and detecting operation congestion of the device element. Logic circuit that detects the status of the above, a timer circuit that issues an alarm signal when the transition to the next sequence step does not occur within the preset traffic congestion monitoring set time, and the actual operation of the device elements until the transition to the next sequence step A time counter that counts time, an integrated value Σtp of deviations between the set time and the actual operating time, and an integrated value Σts of deviations between the set time and the theoretical operating time each time the controlled device is started and stopped. Calculate and compare these integrated values Σtp and Σts, and if the difference is larger than the planned value, or start Sequence monitor apparatus characterized by slope of the function and number of stops the cumulative value Σtp has an arithmetic unit for issuing an alarm signal if it becomes larger than the predetermined value. 2. The sequence monitoring device according to claim 1, wherein the controlled device is a hydraulic turbine generator of a hydroelectric power plant, and sequence steps for monitoring the operating states of the device elements are changed from “operation command input” to “inlet `` Valve fully open '', from `` Inlet valve fully open '' until the turbine rotation speed is above a certain level, then until the generator voltage is above a certain level, and then in parallel. The equipment elements monitored in
Turbines and their accessories, generators and related equipment,
Alternatively, a sequence monitor device characterized by being a system component device. 3. The theoretical operating time of the device element and the traffic jam monitoring set time are set in advance in the computing unit of claim 1, and the actual operating time obtained from the time counter of claim 1 is input to the computing unit. Then, the deviation between the traffic jam monitoring set time and the actual operation time is added up every time the controlled device is started or stopped, and the integrated value Σt
p and the integrated value Σts of the deviation between the traffic congestion monitoring set time and the theoretical operation time are compared, and at the start / stop frequency point at which the integrated value Σtp is smaller than the integrated value Σts, a device abnormality signal is output. A method for driving a sequence monitor device, which is characterized by outputting. 4. The theoretical operation time of the device element and the traffic jam monitoring set time are set in advance in the computing unit of claim 1, and the actual operating time obtained from the time counter of claim 1 is input to the computing unit. Then, the deviation between the traffic jam monitoring set time and the actual operation time is added up every time the controlled device is started or stopped, and the integrated value Σt
p and the integrated value Σts of the deviation between the traffic congestion set time and the theoretical operation time are compared, and the set value incompatibility signal is set at the number of start / stop times at which the integrated value Σtp is larger than the integrated value Σts. A method for driving a sequence monitor device, comprising: 5. The theoretical operation time of the device element and the traffic congestion monitoring set time are set in advance in the computing unit of claim 1, and the actual operating time obtained from the time counter of claim 1 is input to the computing unit. Then, the deviation between the traffic jam monitoring set time and the actual operation time is added up each time the controlled device is started or stopped, and the deviation between the traffic jam monitoring set time and the actual operation time is calculated between the points with a certain interval of start and stop times. A method of driving a sequence monitor, wherein an equipment abnormality signal is output when the integrated value Σtp tends to decrease with an increase in the number of starts and stops.