JPH03158369A - Elevator management operation device in power failure - Google Patents

Abstract

PURPOSE:To make an independent power plant cope with the situation, and to reduce a bad influence to other equipments and apparatuses of a building owing to the elevator operation and a burden more than the necessity to the independent power plant, by setting the allowable running speed of a cage responding to the power source condition fed from the independent power plant and the load condition of the cage. CONSTITUTION:To the voltage value of a power source necessary to run the cage of an elevator at a rated speed, the variation amount of the voltage value fed from an independent power plant is measured, and every time when the value 1b is lower than a preset value 1a, an output signal 1c is issued from a voltage variation detecting means 3. Then, every time the output signal 1c is outputted from the voltage variation detecting means, the allowable speed of the cage is calculated by a device 4 depending on a specific evaluation formula of at least a load detecting value 1e output from a load detecting means 5 and a preset balance load rate of the cage, and the actual speed instruction value 1f is decided from the resultant value. Responding to the instruction value 1f, the cage is operated by a control means 6.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an elevator control operation device during a power outage, and more particularly to a device that operates an elevator in an optimal state according to the capacity of private power generation equipment.

<Prior Art> For example, there is a device disclosed in Japanese Patent Application Laid-open No. 78636/1983 as a device for operating an elevator using private power generation equipment during a power outage. What was disclosed in this bulletin is that during a power outage, private power generation equipment is activated and, depending on the allowable capacity of the private power generation equipment, multiple elevators are moved simultaneously to the standard floor at a speed corresponding to that capacity. For example, if five elevators are installed,
It has been shown that when the in-house power generation equipment only has the capacity for one elevator, it is possible to reduce the speed of each elevator so that all five elevators can be operated at the same time.

<Problem to be solved by the invention> Now, in the above-mentioned system, when operating the elevator, the capacity of the private power source is secured for only one elevator, and in the architectural plan of the building, it is necessary to It would have been sufficient if enough power had been secured for each unit, but since then, due to the expansion of building equipment and changes in specifications, the capacity of the in-house power generation equipment for emergencies, which was sufficient at the planning stage, has become insufficient. It becomes impossible to operate all building equipment at once, and in such a case, the top priority is given to operating the disaster prevention loads, and control is performed to operate them. By the way, in terms of disaster prevention, the operation of elevators has a high priority in terms of dispersing people from upper floors. However, sometimes you have no choice but to force yourself to operate the elevator. However, forcing the elevator to operate under these circumstances may cause the elevator equipment to malfunction, or may cause problems with other building equipment or in-house power generation equipment. . This may cause the operation of the disaster prevention load to stop, leading to a secondary disaster.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and its purpose is to at least control the operation of elevators in accordance with the capacity of private power generation equipment operated during a power outage. To provide an elevator control operation device at the time of a power outage, which can perform emergency rescue operations and also perform optimal rescue operations.

Means for Solving the Problems> In order to achieve the above object, the present invention is characterized by an elevator control operation during a power outage in which the elevator is operated by power supplied from a private power generation facility that is operated during a power outage. In the device, the amount of variation in the voltage value supplied from the private power source equipment with respect to the power supply voltage value required to run the elevator car at the rated speed is measured, and the amount of variation is determined to be less than or equal to a preset value. voltage fluctuation detection means that outputs an output signal each time the car is loaded; load detection means that measures the load condition of the car and outputs a load ratio with respect to the rated load; and the output signal from the voltage fluctuation detection means arithmetic processing means for calculating the permissible speed of the car based on a predetermined evaluation formula using at least the load factor value output from the load detection means and a preset equilibrium load factor of the corner; The vehicle is configured to have a speed command generating means for determining an execution speed command value based on the output from the arithmetic processing means, and a control means for causing the car to travel in response to the speed command generating means.

<Function> According to the present invention, the traveling speed of the car is set in accordance with the power supply situation from the private power generation equipment and the load condition of the car, so that the burden on the private power generation equipment is reduced. This situation can be dealt with, and the present invention has the effect of providing an excellent elevator control operation device that can reduce the adverse effects of elevator operation on other building equipment and unnecessary burden on in-house power generation equipment.

<Example> Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block UgJ road configuration diagram showing the main parts of the elevator control operation device during power outage according to the present invention. In the figure, 1 is an AC motor 10 that operates by receiving the line voltage of three-phase AC power supplies S and T supplied from power supply equipment, and is necessary for the AC motor 10 that runs the elevator car to run the elevator car at the rated speed. A constant voltage circuit configured to output a reference value 1a indicating a voltage value, 2 is a voltage that receives the line voltage of three-phase AC power supplies S and T and outputs an output value 1b corresponding to the voltage value. The detection circuit 3 compares the reference value 1a outputted from the constant voltage circuit 1 and the output value 1b outputted from the voltage detection circuit 2, and determines that the output value 1b is less than or equal to a preset ratio with respect to the reference value 1a, e.g. , a comparison circuit that outputs a power failure detection signal IC that is issued as an abnormality in voltage drop of the power supply when the output value 1b becomes 90% or less of the reference value 1a; 5
A car self-load detection circuit that measures the load condition inside the car and outputs a load detection value 1e as a load factor with respect to the rated load in response to the load condition, 4 is when the private power generation equipment is operated and the power is supplied. Private power source establishment signal 1 output to
When d and the power outage detection signal 1c are input, the expected voltage drop rate coefficient is calculated based on the equilibrium load rate of the car stored in advance according to the load detection value 1e from the car internal load detection circuit 5. Based on the evaluation formula (1) and the evaluation formula (2) for calculating the unbalanced load factor, calculate the speed limit value of the car that can run with the power capacity supplied from the private power generation equipment, An operation management circuit configured to output a speed command value 1f corresponding to the speed command value 1f; 6 is a speed command value 1f;
7 is a speed control circuit that outputs a firing timing command 1g for controlling the traveling speed of the car according to the speed control circuit 6. This is a base drive circuit that outputs a base drive signal 1h that turns on the base of a transistor in order to output a voltage corresponding to the voltage.

The evaluation formulas (1) and (2) described above are expressed by the following formulas.

In other words, the expected voltage drop rate coefficient is 80 for the rated speed of the elevator, and L5 for the unbalanced load factor that indicates the balance ratio with the balance bell for the load condition of the car. AC motor 10 that has a proportional relationship to the maximum acceleration/deceleration that changes depending on the specifications of
This is the ratio of the accelerating current flowing to the rated current to the rated current, which is called a loss coefficient and is given by Ro, and the speed limit is S and l.

Further, the unbalanced load factor is given by Vo, which is the ratio of the loading state in the car to the rated loading value, and B, which is the balanced load factor adjusted for each elevator in advance.

Next, the operation of speed control processing in the operation management circuit 4 will be explained based on FIGS. 2 and 3.

Figure 2 is a flowchart of the operation control process for running the elevator, and Figure 3 is the speed limit process step 13 in Figure 2.
3 is a flowchart of a subroutine that executes arithmetic processing.

First, the outline process of operation control will be explained with reference to Fig. 2.
Upon receiving the power, the operation management circuit 4 executes a process of reading a constant value stored in a storage circuit (not shown) and setting it in a corresponding address as an initial value (step 11). Next, it is determined whether or not the in-house power source establishment signal 1d is input (step 12), and if the signal 1d is not input manually, the speed is the initial value processed in step 11. A process for running the elevator is executed (step 14). If it is determined in step 12 that the private power source establishment signal 1d has been input, a process for setting a corresponding traveling speed is executed (step 13), and control is performed to cause the elevator to travel at the set speed. (Step 14) In this way, the operation management circuit 4 repeatedly executes the processing from Step 12 to Step 14 after receiving power and setting the initial value.

Now, according to FIG. 3, speed limit processing step 13 will be specifically explained using evaluation formulas (1) and (2).

Now, the rated speed S0 of the elevator is 240 m/min.
, the equilibrium load rate B of the car is 50%, and the load detection value ■
. When R is 0%, the expected voltage drop rate coefficient R is given as an initial value and its value is 1.5, and the loss coefficient R0 is normally given as 0.5, and these constant values determine the speed limit. Based on the above-mentioned evaluation formula (1) for calculating the expected voltage drop rate coefficient and evaluation formula (2) for calculating the unbalanced load factor, the speed limit SR is the following formula, and the speed limit S, I By substituting the evaluation formula (2) into the calculation formula (3), the calculation formula (3) for the speed limit S,1 becomes,
When the above-mentioned constant value is given to this, the control speed SR is: = 240 (
61, and only the dimension that displays the speed remains, and its speed limit S, l is 2, which is the same as the rated speed S0.
This means that you can run at a speed of 40 m/mix. As a result, in operation control processing step 14, control is executed to run the elevator at the speed determined above, that is, 240 m/mtn, and in response, the speed control circuit 6 issues an ignition timing command 1g. Based on this, a base drive signal 1h is output from the base drive circuit 7, a voltage corresponding to this speed is supplied from the converter device 8 and the inverter device 9, and the AC motor 10 is driven to run the elevator. Ru. This AC motor 1
0 is driven, and the power supply voltage supplied from the private power source equipment drops extremely, the voltage detection circuit 2 detects this, and the comparison circuit 3 outputs a power outage detection signal IC. Each time the power outage detection signal 1c is manually input, the operation management circuit 4 reads out a value for correcting the expected voltage drop rate coefficient stored in advance from the above-mentioned storage circuit, and calculates the expected voltage drop rate coefficient every time the power outage detection signal 1c is input manually. Then, the speed limit S8 is calculated in accordance with the correction (step 16) (step 17). If the value for correcting the expected voltage drop rate coefficient is set to, for example, 0.3, the initial value is 1.5, so the speed limit Sl is calculated using formula (4).
Given the constant value mentioned above, = 1 92
(81, and from the operation management circuit 4, the maximum speed at this time is 192 m/w
A speed command value 1f is issued to limit the speed to 1f, and based on this, the speed control circuit 6 operates to issue a control signal to the converter device 8 and inverter device 9 so that the corresponding voltage value is issued. Correspondingly, base drive circuit 7 issues base drive signal 1h to converter device 8 and inverter device 9. In response, the converter device 8 and the inverter device 9 output a voltage value for driving the AC motor 10, thereby increasing the speed of the elevator to 192.
The AC motor 10 is rotated so that it cannot output a/min L.

In this way, after the elevator has been operated to the desired floor, if there is a change in the load condition in the car, for example, if the load condition changes to 25% at the load detection value V0, then the elevator is operated to the desired floor. The management circuit 4 sets the speed limit S corresponding to this.
Execute the process to calculate the value. Speed limit SR at this time
Using calculation formula (4) in the same way as the calculation method described above, and giving each constant value to it, in the judgment process of step 15,
If the power failure detection signal 1c was not output from the comparator circuit 3 during the previous run, there is no change in the expected voltage drop rate coefficient, so the process proceeds from step 15 to step 18, and the control speed SR is So, 288 ra/1
However, since the rated speed of the elevator is 240 m/min, it is unlikely that the rated speed will be exceeded in actual driving under these conditions. 240 II/
You will be driving at aIin.

If the power outage detection signal 1c was output from the comparison circuit 3 during the previous run, the operation management circuit 4 executes the process of proceeding from step 15 to step 16, and the operation management circuit 4 executes the process of step 16. After executing , the process of calculating the speed limit SII is executed.

That is, the operation management circuit 4 corrects the expected voltage drop rate coefficient and calculates the speed limit SR based on it. The expected voltage drop rate at this time is the previous value of 1.2.
Therefore, it is only necessary to further subtract 0 and 3 from it, and the value becomes 0.9.The speed limit S and I are processed in step 17, and this expected voltage drop rate coefficient is changed from 1.2 to 0.
When the other constant values are calculated using formula (4) with the above-mentioned values instead of 9, it becomes =288 l =144 03, which is output from the operation management circuit 4 as the maximum allowable speed of the elevator at this time. Speed command value 1f is 144 m
/min, and in such a case, the elevator is
Since the elevator can only run at a speed of 144 m/min, the elevator can be operated sufficiently if there is a power supply capacity corresponding to this speed.

Therefore, according to this embodiment, as explained above, the elevator can be operated at the maximum speed corresponding to the power capacity supplied from the private power generation equipment, and the It is now possible to provide an elevator control operation device during a power outage that is highly effective in maintaining elevator operation, power supply equipment, and other equipment in an optimal state.

<Effects of the Invention> As explained above, according to the present invention, the permissible running speed of the car is set in accordance with the power supply situation from the private power generation equipment and the load situation of the car. During a power outage, the burden on private power generation equipment can be dealt with, and the negative impact on other building equipment due to elevator operation and unnecessary burden on private power generation equipment can be reduced. This provides an excellent effect of providing an elevator control operation device.

4 Brief description of the drawings Fig. 1 is a block circuit configuration diagram showing the main parts of the elevator control operation device during a power outage according to the present invention, Fig. 2 is a flowchart of the operation control process for running the elevator, and Fig. 3 is a flowchart of the operation control process for running the elevator. FIG. 3 is a flowchart of a subroutine for executing speed control calculation processing in FIG. 2; FIG.

1... Constant voltage circuit, 2... Voltage detection circuit, 3... Comparison circuit, 4... Operation management circuit, 5... Car self-load detection circuit, 6...
... Speed control circuit, 7 ... Base drive circuit, 8 ... Converter device, 9 ... Inverter device, 10 ... AC motor.

Claims (1)

[Claims] 1. In an elevator control operation system during a power outage in which the elevator is operated by power supplied from a private power generation facility that is operated during a power outage, the power supply voltage value required to run the elevator car at the rated speed. voltage fluctuation detection means that measures the amount of fluctuation in the voltage value supplied from the in-house power source equipment and issues an output signal every time the value becomes equal to or less than a preset value; and a load state in the car. load detection means configured to measure and output a load factor value with respect to the rated live load; and at least a load factor value outputted from the load detection means each time the output signal is issued from the voltage fluctuation detection means. an arithmetic processing means for calculating the permissible speed of the car based on a predetermined evaluation formula based on a preset equilibrium load rate value of the car; and an execution speed command value based on the output from the arithmetic processing means. 1. An elevator control operation device during a power outage, comprising: speed command generation means for determining a speed command; and control means for causing the car to travel in response to the speed command generation means.