JPH09310674A - Start control device for hydraulic turbine generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a start control device for a hydraulic turbine generator which can easily set up the start precedence of each unit in plurality of hydraulic turbine generators. SOLUTION: An automatic precedent unit selection section 9 automatically sets up a start precedence on the operation time of plural units of hydraulic turbine generators. On the other hand, the manual setting up of the start precedence is practicable through a unit precedence manual setter 1, and a unit start control section 4 starts plural units of hydraulic turbine generators according to the start precedence changed over by a manual automatic changer 10. Thus the start precedence can be set up both manually and automatically, and in the case where manual intervention is unnecessary, the hydraulic turbine generator can be started on the automatically set up start precedence.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting control device for a hydraulic turbine generator that starts a plurality of hydraulic turbine generators according to a total load command value.

[0002]

2. Description of the Related Art Generally, a hydroelectric power plant having a plurality of hydroelectric generators is given a total load command value to be output by the hydroelectric power plant as a whole. When the total load command value is given, the hydroelectric power station starts the necessary number of turbine generators so as to match the total load command value. That is, the total load command value is a command value indicating how much load is to be applied as a hydroelectric power plant by combining a plurality of turbine generators, and the rated loads of all the units are the same and When the rated load is x [MW], when the total load command value A [MW] is given, A / x (rounded up to the nearest whole number) water turbine generators are started.

When starting a plurality of turbine generators, the turbine generators are started in a predetermined start priority order. In this case, the start control device of the turbine generator that automatically starts and stops the turbine generator of each unit based on the total load command value and the start priority order of each unit is referred to as a response start control device.

FIG. 3 shows the configuration of a conventional water-repellent activation control device. The unit priority manual setting device 1 is for manually setting the starting priority of each unit of a plurality of turbine generators.
The start priority order of each machine set by the machine priority order manual setting device 1 becomes the start priority order data 2 and is input to the machine start control section 4 which is one function of the common control section 3.

In FIG. 3, the start-up priority order is in the order of No. 3, No. 1, No. 2, No. Further, the total load command value a and the parallel conditions b1 to bn of each unit are input to the unit start control unit 4. Here, this parallel condition b
1 to bn are, as shown in FIG. 4, a plurality of turbine generators 6.
It is a signal from the contacts s7-1 to s7-n of the parallel circuit breakers 7-1 to 7-n for inserting -1 to 6-n into the power system 8 in parallel.

[0006] Then, the unit start control unit 4 determines which unit is to be started, and each water turbine generator 6-1.
~ 6-n each unit control unit 5-1 to 5-5 for starting control
Output the start command to -n.

Now, it is assumed that an n-unit starting load command for the turbine generators 6-1 to 6-n is given as the total load command value a. Since the No. 3 machine has the highest start priority of each machine, first, the No. 3 machine control section 5-3 of the No. machine start control section 4 to each of the No. 3 machine control sections 5-1 to 5-n. And a start command is output. FIG. 5 shows a turbine generator 6- in this case.
The starting sequence of 1 to 6-n is shown.

Unit start control unit 4 to unit 3 control unit 5-3
When a start command is output to the third unit control unit 5-3
Then, the startup control of the Unit 3 turbine generator 6-3 is performed. And finally, the third turbine generator 6-3 is connected to the parallel breaker 7
-3 enters and is parallel to the power system 8 and the start control of the third turbine generator 6-3 is completed.

When the No. 3 hydraulic turbine generator 6-3 is paralleled to the power system 8, the parallel condition b3 of the No. 3 machine is turned on among the parallel conditions b1 to bn of each No. machine. In the unit start control unit 4, 3
When the ON condition of the unit parallel condition b3 is input, next, in order to start the Unit 1 turbine generator 6-1 having the highest priority,
Of the respective unit control units 5-1 to 5-n, the first unit control unit 5-
The start command is output to 1. After that, by the same control sequence, the machines having the higher start-up priority are sequentially started up, and the machine n is started up at the end, and the water-supply start-up control is completed.

[0010]

However, in such a start-up control device, it is necessary to preset the start-up priority order of each machine. In the conventional start-up control device, the start-up priority order of the machine is set manually, and the setting is performed by following the procedure described below. That is, in a hydroelectric power plant where multiple hydroelectric generators are installed, it is desirable to make the operating time of each unit uniform, so the operators of the hydroelectric power plant should use the operation records of the hydroelectric power plant to identify each unit. Units with short operating time were set as the units with high start priority, by calculating the total hours of parallel operation.

As described above, in the conventional system, it is necessary to collect the operating time of each unit before setting the starting priority of each unit, and the priorities are determined after that.
There was a problem that it took time.

An object of the present invention is to provide a start-up control device for a water turbine generator which can easily set the start-up priority of each unit.

[0013]

According to a first aspect of the present invention, there is provided a machine priority manual setting device for setting the starting order of a plurality of turbine generators, and each of the turbine generators for individually controlling the plurality of turbine generators. A starting control device for a water turbine generator, which includes a unit control unit and a common control unit that gives a start / stop command to each unit control unit based on the starting priority set in the unit priority manual setting unit. In the above, the common control unit is an automatic priority machine selection unit that automatically sets the startup priority order based on the operating time of multiple turbine generators, and the start priority order and the unit priority manual order from the automatic priority machine selection unit. A manual automatic switcher that switches the starting priority from the setter, and the number of turbine generators operating based on the total load command value given from the outside, and each unit according to the startup priority switched by the manual automatic switcher control Is obtained by a for Unit activation control unit outputs an activation stop command.

According to the first aspect of the invention, the automatic priority machine selection unit automatically sets the start priority order based on the operating time of a plurality of turbine generators. On the other hand, it is also possible to manually set the start priority order with the machine priority order manual setting device, and the machine start control unit starts the plurality of turbine generators with the start priority order switched by the manual automatic switching device. This allows
The activation priority can be set both manually and automatically, and when no manual intervention is required, the activation can be performed with the automatically set activation priority.

[0015]

Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a startup control device according to an embodiment of the present invention. The embodiment of the present invention is different from the conventional example shown in FIG. 3 in that the automatic priority machine selection unit 9 automatically sets the start priority order based on the operating time of a plurality of turbine generators.
Is additionally provided, and the activation priority data 2 from the machine priority manual setting unit 1 and the priority data from the automatic priority machine selection unit 9 are switched by the manual automatic switcher 10 and input to the machine activation control unit 4. It is something that is done.

In FIG. 1, the machine priority order manual setting device 1
Is to manually set the starting priority of each unit of multiple turbine generators. A circle mark in FIG. 1 indicates that the activation priority order is set. In other words, Unit 1 is the second in the starting order, Unit 2 is the third in the starting order, and Unit 3 is the first in the starting order.
The n-th and n-th machines are those set to the n-th starting order. The start priority order of each machine set by this machine priority order manual setting unit 1 is the start priority data 2
Becomes This start-up priority data is a list of No. 3 units to be started up in that order.
… The order of the nth unit. And the manual automatic switcher 1
It is input to the machine start control unit 4 of the common control unit 3 via 0.

On the other hand, the automatic priority machine selection unit 9 automatically calculates the start priority order of each machine, and the start priority data automatically calculated here is also transmitted via the manual automatic switcher 10. It is input to the machine start control unit 4. That is, the manual automatic switcher 10 is the machine priority manual setting device 1
The start-up priority data manually set by the switch and the start-up priority data automatically set by the automatic priority machine selection unit 9 are switched, and the start-up priority order selected by the manual automatic switcher 10 is common. It is input to the machine start control unit 4 of the control unit 3.

Further, the total load command value a and the parallel conditions b1 to bn of each unit are input to the unit start control unit 4. As shown in FIG. 4, the parallel conditions b1 to bn are the contact points of the parallel circuit breakers 7-1 to 7-n for inserting a plurality of turbine generators 6-1 to 6-n into the power system 8 in parallel. s7-1 to s
7-n. Then, in the machine start control unit 4, for determining which machine is to be started based on the start priority order from the manual automatic switcher 10, and for controlling the start of each of the water turbine generators 6-1 to 6-n. Unit control unit 5
Output a start command to -1 to 5-n.

Next, the operation of automatically calculating the priority order of starting the machines in the automatic priority machine selecting portion 9 will be described. In the automatic priority machine selection unit 9, the parallel condition b of each machine
1 to bn are input, and the time during which the parallel conditions b1 to bn are ON is integrated. As a result, the operating time of each unit is automatically added up. Then, the one having a short operating time is preferentially started, and the operating time of each unit is started so as to be averaged.

FIG. 2 shows an example of the result of counting the operating time.
In FIG. 2, the operating time of Unit 1 is shown as t1. Similarly, the operating time of Unit 2 is shown as t2, the operating time of Unit 3 as t3, and the operating time of Unit n as tn. Now, when comparing the operating times of the respective units and arranging the units in order from the one having the shortest operating time, t2 <t3 <t1 <... <tn. This order is referred to as start priority data 2 of the machine. The start-up priority data 2 is input to the machine start control unit 4 through the manual automatic switcher 10. Unit start control unit 4
Will output a start command to the corresponding unit control unit 5 based on the start priority data.

Therefore, when the start priority data obtained by the automatic priority machine selection unit 9 is selected by the manual automatic switcher 10, the turbine generator 6 is started based on the start priority. Become. In the present invention, not only can the start priority order be set automatically, but the start priority order manual setting device 1
The starting priority data from (3) can be selected by the manual automatic switcher 10. This is used when prioritizing manual operation. If the starting order cannot be determined simply by the cumulative operating time, for example, if a malfunction occurs in the turbine generator and the turbine generator is discontinued,
Prioritize manual operation.

When the total load command value is reduced and the number of units to be activated is reduced, the machines with lower priorities are stopped in order based on the currently set priority data.

[0023]

As described above, according to the present invention, the automatic priority machine selection section automatically collects the operation time of the water turbine generator and sets the priority order of the machines. It is not necessary to collect the operating time of the turbine generator and manually set the priority order of the turbine. As a result, it is possible to reduce the work amount and easily set the start priority order of each unit. Further, since the activation priority order can be manually set, the activation priority order can be set appropriately depending on the situation at each time.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of how to determine a startup priority order in the automatic priority machine selection unit according to the embodiment of the present invention.

FIG. 3 is a configuration diagram of a conventional example.

FIG. 4 is a single line connection diagram of a hydroelectric power plant in which a plurality of turbine generators are installed.

FIG. 5 is a time chart showing a startup sequence of a plurality of turbine generators according to a conventional example.

[Explanation of symbols]

 Unit 1 priority manual setter 2 Start priority data 3 Common control unit 4 Unit start control unit 5 Each unit control unit 6 Water turbine generator 7 Parallel circuit breaker 8 Electric power system 9 Automatic priority unit selection unit 10 Manual automatic switcher

Claims (1)

[Claims] 1. A unit priority order manual setting device for setting the starting order of a plurality of turbine generators, each unit controller for individually controlling the plurality of turbine generators, and the unit priority manual In a start control device for a water turbine generator configured with a common control unit that gives a start command for the water turbine generator to each of the unit control units based on the start priority set in a setting device, the common control unit is: From the automatic priority machine selection unit that automatically sets the startup priority order based on the operating time of the plurality of turbine generators, the startup priority order from the automatic priority machine selection unit and the machine priority order manual setter A manual automatic switcher that switches the starting priority order, and the number of operating turbine generators is determined based on the total load command value given from the outside, and each unit control is performed according to the starting priority order switched by the manual automatic switcher. A starting control device for a water turbine generator, comprising: a starting control unit for outputting a starting command to the control unit.