JP5194690B2 - Uninterruptible power system - Google Patents

Description

  The present invention relates to an uninterruptible power supply that supplies power when a power failure occurs.

  Uninterruptible power supplies that supply power during power outages are widely used. In particular, it is no longer necessary to provide a backup power source in the event of a power failure in a computer system. In the following, the uninterruptible power supply is referred to as UPS (Uninterruptible Power Supply) for the sake of simplicity.

  Various types of UPS are prepared depending on the scale of backup. In addition to battery power supply, a large model is also available that can supply power by operating the engine and performing private power generation (see Patent Document 1).

JP 2005-245190 A

  In a UPS that supplies power by operating the engine and performing private power generation, the engine rotation speed is stabilized after the engine is started, and it takes some time until the power frequency reaches a predetermined value. Therefore, immediately after the occurrence of a power failure, power is supplied only by the electric power stored in the storage battery, and there is a problem that private power generation cannot be used.

  Here, when considering the main factors that cause power outages, breakdowns and accidents of power transmission facilities, natural disasters such as lightning strikes and earthquakes can be cited. Of these, focusing on earthquakes, emergency earthquake bulletins are to be reported to the general public from October 2007, and it is possible to predict power outages due to earthquakes in advance. It becomes possible.

  Here, emergency earthquake warning means that immediately after the occurrence of an earthquake, the observation data captured by the seismometer near the epicenter is analyzed to immediately estimate the epicenter and magnitude of the earthquake (magnitude), and based on this, the main ground motion (main motion) ) Is information that can be notified as quickly as possible by estimating the arrival time and seismic intensity.

  The present invention has been made under such a background, and an object of the present invention is to provide a UPS in which countermeasures against earthquakes are improved by using emergency earthquake warnings.

  The present invention comprises means for receiving an earthquake early warning and means for starting private power generation regardless of whether or not a power failure has occurred when the means for receiving receives the earthquake early warning. It is a UPS.

  In this way, if the private power generation is started by the earthquake early warning, the engine used for the private power generation can be kept in a stable operating state at the time when the power failure due to the earthquake actually occurs. Power can be supplied.

  Furthermore, it is desirable that the means for starting the private power generation includes a means for stopping the private power generation when a power failure does not occur after a predetermined time has elapsed since the private power generation was started. If comprised in this way, when a power failure does not generate | occur | produce, the energy consumption by private power generation can be suppressed.

  Another aspect of the present invention is a UPS comprising means for receiving an earthquake early warning and means for displaying or recording the early warning when the receiving means receives the earthquake early warning. .

  Even if UPS is activated by an earthquake early warning, there may be no power failure after that. In such a case, displaying or recording a bulletin is useful when the UPS administrator knows the cause of the UPS startup.

  Furthermore, it is desirable to provide means for displaying or recording when a power failure or switching of the power supply path occurs after receiving the earthquake early warning.

  In particular, even when the power supply path is switched and the power failure is avoided, the UPS starts up due to the fluctuation of the power supply frequency. Although a power outage has occurred, a power outage has not occurred for a time that can be recognized by a person, so the UPS administrator does not know the cause of the UPS startup. In such a case, displaying or recording that the power supply frequency has changed due to the switching of the power supply path is extremely useful for the administrator to know the cause of the startup of the UPS.

  According to the present invention, it is possible to realize a UPS that can quickly cope with a power failure caused by an earthquake.

(First Example)
The UPS 6 of the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing the configuration of the UPS 6 of the first embodiment.

  The UPS 6 of the first embodiment is an emergency earthquake warning receiver 1 that is means for receiving an earthquake early warning that is promptly received from the Japan Meteorological Agency. A self-power generation start instructing unit 2 that is means for starting self-power generation regardless of whether or not. The UPS function unit 4 is a functional block having a conventional UPS function.

  FIG. 2 is a flowchart showing the operation of the private power generation start instruction unit 2. The private power generation start instructing unit 2 monitors the notification of the emergency earthquake bulletin from the emergency earthquake bulletin receiving unit 1 (step S1), and if the emergency earthquake bulletin is received (Yes in step S2), the UPS function unit 4 An in-house power generation start instruction is issued (step S3).

  When the UPS function unit 4 performs self-power generation using the self-power generation engine 40, if the self-power generation engine 40 is started by the emergency earthquake warning, the self-power generation is already performed when a power failure due to the earthquake actually occurs. The engine 40 can be maintained in a stable operating state, and a stable power supply can be supplied immediately after a power failure.

  Thereafter, if a power failure does not occur even after a predetermined time has elapsed (No in step S4), the private power generation start instruction unit 2, which is also a means for stopping the private power generation, sends a private power generation to the UPS function unit 4. A stop instruction is given (step S5). If a power failure occurs after a predetermined time has elapsed (Yes in step S4), the private power generation is continued (step S6). Thereafter, when the power failure is restored (Yes in step S7), the process goes to step S5 to start the private power generation. The instruction unit 2 issues a private power generation stop instruction.

  At this time, “Earthquake early warning received” is displayed on the display unit 3 which is a means for displaying the emergency earthquake early warning. Further, a detailed information button is provided on the screen of the display unit 3, and the display unit 3 also serves as an operation input unit. When the user touches the detailed information button, the detailed information as shown in FIG. 3 or 4 is displayed.

  In the example of FIG. 3, it can be seen that the earthquake early warning receiving unit 1 receives the emergency earthquake early warning at 2:14, and the private power generation start instructing unit 2 issues a private power generation start instruction to the UPS function unit 4. . At 2:15, it can be seen that the UPS function unit 4 detects a power failure and power supply is started. Thereafter, at 2:20, it can be seen that the power failure has been restored and the UPS function unit 4 has stopped supplying power.

  In the example of FIG. 4, it is understood that the earthquake early warning receiving unit 1 receives the earthquake early warning at 2:14, and the private power generation start instructing unit 2 issues a private power generation start instruction to the UPS function unit 4. . However, no power failure is detected even at 2:19, and it can be seen that the private power generation start instructing section 2 issues a private power generation stop instruction to the UPS function section 4.

  This detailed information is recorded in the detailed information storage unit 5 which is a means for recording the earthquake early warning, and the user operates the detailed information button on the display unit 3 to display past detailed information on the display unit 3. be able to.

  In FIG. 1, the private power generation engine 40 is provided inside the UPS function unit 4, but the private power generation engine 40 may be configured separately from the UPS 6, and the UPS function unit 4 may be remotely controlled.

(Second embodiment)
A second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a diagram for explaining the configuration and operation of the USP function unit 4 and the display unit 3 of the second embodiment. FIG. 6 is a flowchart showing the operation of the power failure monitoring unit 41 of the second embodiment. In the description of the second embodiment, parts having the same functions as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted or simplified.

  As shown in FIG. 5, the UPS function unit 4 includes a private power generation engine 40, a power failure monitoring unit 41, a converter 42, an inverter 43, a battery 44, and a UPS control unit 45. In the second embodiment, the private power generation engine 40 is not an essential component, and the second embodiment is an embodiment relating to the display unit 3 that facilitates analysis of the cause of activation of the UPS 6 that is difficult for an administrator to grasp.

  Here, the UPS function unit 4 common to the first embodiment will be briefly described. When the power failure monitoring unit 41 detects a power failure, frequency abnormality, or voltage abnormality, this is transmitted to the UPS control unit 45, and the UPS control unit 45 starts the private power generation engine 40. When the earthquake early warning reception unit 1 receives the earthquake early warning, the private power generation start instructing unit 2 transmits the fact to the UPS control unit 45, and the UPS control unit 45 immediately receives this transmission and then the private power generation engine. 40 is started.

  The converter 42 converts the AC voltage and frequency generated by the private power generation engine 40 into the desired AC voltage and frequency according to the control of the UPS control unit 45. The inverter 43 converts the DC voltage of the battery 44 into a desired AC voltage and frequency.

  In the second embodiment, the power failure monitoring unit 41 monitors the earthquake early warning and the frequency fluctuation, detects that the power supply path has been switched, and displays the fact on the display unit 3. That is, as shown in FIG. 6, the power failure monitoring unit 41 monitors the frequency of the power supply (step S10), there is a fluctuation (Yes in step S11), and the emergency earthquake bulletin receiving unit 1 receives the emergency earthquake bulletin. If it is present (Yes in step S12), it is determined that the power supply path has been switched due to the occurrence of the earthquake, and “power supply path switching has occurred” is displayed on the display unit 3 (step S13). At this time, the value of the fluctuating frequency “50 Hz → 60 Hz” may be displayed together on the display unit 3.

  Further, even if there is a frequency fluctuation in step S11, if the emergency earthquake bulletin receiving unit 1 has not received the emergency earthquake bulletin (No in step S12), it simply displays “frequency abnormality” (step S14). This is because it cannot be determined that the cause of the frequency fluctuation is the switching of the power supply path due to the earthquake.

  The display content of the display unit 3 is recorded in the display content storage unit 7 which is a means for recording the display content, and the history of the display content is displayed using the display unit 3 or an external terminal (not shown) as necessary. Can be read. The detailed information storage unit 5 may also have the function of the display content storage unit 7.

  According to the second embodiment, for example, a power generation facility (A power company) that supplies power at 50 Hz stops due to an earthquake, and as an alternative, a power generation facility (B power company) that supplies power at 60 Hz. UPS 6 starts even though there is no power outage for a time that can be recognized by humans, even though an instantaneous power outage accompanying switching of the power supply path occurs. . Even in such a case, the administrator can easily analyze the cause of the startup of the UPS 6 by referring to the detailed information display on the display unit 3.

  As described above, the private power generation engine 40 may be configured separately from the UPS 6 and remotely controlled by the UPS function unit 4.

(Other examples)
In general, the UPS 6 is not used during normal times (when there is no power outage), so it is installed in a place where it is usually difficult to see, such as the basement or one corner of a room. Therefore, it may be difficult for an administrator to constantly monitor.

  Therefore, a self-diagnosis unit (not shown) may be provided that self-diagnose an operating state such as presence / absence of abnormality of the UPS 6 and transmits the self-diagnosis result to the administrator. Alternatively, a self-diagnosis device for self-diagnosis of the UPS 6 and transmitting the self-diagnosis result is separately prepared. The UPS 6 has a connection unit (not shown) to which the self-diagnosis device can be connected and a communication unit ( (Not shown) may be provided.

  The information transmitted from the self-diagnosis unit or the self-diagnosis device is not only the self-diagnosis result, but also customer information of UPS 6 (for example, owner and user of UPS 6, serial number identifying UPS 6 and installation location) and deterioration of parts. You may make it send status information etc. Such information may be sent together with the diagnosis result to one or more of the administrator's server and the UPS 6 manufacturer window.

  If an abnormality has occurred in the UPS 6, a blinking lamp (not shown) of the UPS 6 or a UPS abnormality warning unit (not shown) of the self-diagnosis device is turned on to notify the administrator of the urgency. Good.

  Further, the call number of the call center serving as the manufacturer's window can be automatically acquired by the application program, and the self-diagnosis result may be surely delivered to the call center even if the call center's telephone number changes. Also, any one or more of UPS 6 user or administrator information, such as address, name, company name, department name, email ID, etc., is either an administrator server or a UPS 6 manufacturer server. It may be registered in one or more, and based on such information, a self-diagnosis result may be sent, or an instruction may be given to the user from the manufacturer of UPS 6 or the like.

  When the UPS 6 fails, such as a failure recovery program, is stored in the administrator's server or the UPS 6 manufacturer's server, a program that corrects the failure is stored, and a notification that the UPS 6 has failed is received. You may make it transmit the program which corrects the failure to UPS6 or a self-diagnosis apparatus. The UPS 6 will correct the failure by itself.

It is a figure which shows the structure of UPS of the 1st Example of this invention. It is a flowchart which shows operation | movement of the private power generation start instruction | indication part shown in FIG. It is a figure which shows an example of the detailed information display of a 1st Example. It is a figure which shows an example of the detailed information display of a 1st Example. It is a figure for demonstrating the structure and operation | movement of a UPS function part of 2nd Example, and a display part. It is a flowchart which shows operation | movement of the power failure monitoring part shown in FIG.

Explanation of symbols

1 Earthquake early warning reception part (means to receive emergency earthquake early warning)
2 Private power generation start instruction section (means to start private power generation, means to stop private power generation)
3. Display (means for displaying or recording)
4 UPS function section 5 Detailed information storage section (means for displaying or recording)
6 UPS
7 Display content storage (display or recording means)
40 Engine for private power generation 41 Power failure monitoring unit 42 Converter 43 Inverter 44 Battery 45 UPS control unit

Claims (1)

A means of receiving earthquake early warnings;
When this receiving means receives the earthquake early warning, means for starting private power generation regardless of whether or not a power failure has occurred,
Power monitoring means for monitoring the earthquake early warning and the power frequency to detect that a power failure has occurred and the power supply path has been switched;
With
When the power supply monitoring means has a fluctuation in power supply frequency and receives an earthquake early warning, it is assumed that the power supply path from the alternative power generation facility has been switched due to the occurrence of an earthquake. An uninterruptible power supply , wherein the display unit displays values of different power supply frequencies switched to the effect .

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