KR102136504B1 - Managing uninterruptible power supply system - Google Patents

Abstract

The present invention relates to an uninterruptible power supply management system that detects whether there is a system abnormality and allows power supplied from a power supply source to be stably provided to a load using a UPS or an ESS and a switch device.
To this end, the uninterruptible power supply management system according to an embodiment of the present invention provides an uninterruptible power supply consisting of an uninterruptible power supply system (UPS) including a power supply source including an renewable or diesel generator and an energy storage system (ESS). A management system, comprising: a load, a first switch connected in parallel with the power supply source and the uninterruptible power supply system, and determining an electrical connection between power generated by the power source and a load; A second switch for determining an electrical connection between the load and the grid; Control the on/off operation of the first switch and the second switch according to the measured values of the first sensor unit and the first sensor unit to measure the state information of the system, and control the operation of the power supply source and the uninterruptible power supply system It characterized in that it comprises an operation management system including a control unit.
Through this, even when there is a system abnormality in power provided from the power supply source, power can be stably provided to the load without a power failure.

Description

Uninterruptible power supply management system {MANAGING UNINTERRUPTIBLE POWER SUPPLY SYSTEM}

The present invention relates to an uninterruptible power supply management system, and more specifically, to detect whether a system is abnormal and to use a small power or diesel using an uninterruptible power supply (UPS) or an energy storage system (ESS) and a switch device equipped with a battery and a control device. It relates to an uninterruptible power supply management system for stably providing power supplied from a power generation device (hereinafter referred to as a power supply source) to a load.

The general uninterruptible power supply is also called an uninterruptible power supply (UPS) device, and when there is a change in the commercial power and generator power of the system, it continuously supplies a constant voltage and frequency to the load to the load device, and provides battery power even in the event of a power failure. Refers to a systemic device that continuously supplies and maintains power for a specified period of time.

This uninterruptible power supply has been developed to reduce damage such as loss of data or information as the industry develops, and in the current society mainly using computers, marketability and development are increasing day by day, and are widely used in the field of power electronic circuits. .

In addition, the above uninterruptible power supply (UPS) breaks down the barrier with the Energy Storage System (ESS), and recently the government has recently installed an uninterruptible power supply (UPS) in an energy storage system (ESS). The combination of them (UES, UPS+ESS) is being developed by making them applicable.

In addition, generally, a UPS facility is a combination of a DC power supply, a DC battery, and a power conversion device. Normally, when the converter included in the power conversion device converts AC power to DC, the DC battery charges DC and simultaneously , The inverter included in the power converter reversely converts DC into stable AC, supplies AC power of constant voltage and constant frequency to the load, and when AC power fails, discharges DC charged by DC battery and discharges from DC battery Refers to a device that supplies uninterrupted power to a load by inverting the converted direct current into an alternating current to supply power to the load.

In addition, the general power storage system is one of the solutions to the problem of the demand for efficient use of resources and energy due to the seriousness of energy and environmental problems, the increase in power demand, the uncertainty in the power location, and the deepening of the load gap between day and night. As one, it is regarded as a technology with high potential for practical use.

As a conventional technology for such a power storage system, along with the development of a power storage system using an existing fuel cell, the development is underway in advanced countries such as the United States and Japan, focusing on the development of a high-capacity high-energy density high-performance cell. Research into new battery development is being actively conducted to improve the economic efficiency and battery life.

In addition, patents and papers on control systems, protection devices, reverse charge protection, single operation prevention devices, etc. of grid-connected inverters have been reported for grid connection and operation technologies of power storage systems, and resources according to the severity of energy environmental problems. It has been developed mainly for load balancing purposes in terms of the efficient use of energy, the deepening of the load gap between day and night due to the increase in malicious loads such as air conditioners, and the deterioration of the load ratio.

That is, the power is stored in a secondary battery by converting electric power into a direct current by a power conversion device during late-night base load, which is connected to the power system in parallel, and is low in power charge. Research and development are being conducted on a method of converting the power into AC and supplying it to the consumer, thereby improving the load equalization of the entire system and improving the economic efficiency of the consumer's electricity bill.

On the other hand, for the uninterruptible power supply device that is developed in the above trend and is applied in various fields, the hybrid uninterruptible power supply system using a fuel cell and its control method (prior art 1), registered in published patent publication No. 10-2011-0133118 In Patent Publication No. 10-1331183, an uninterruptible power supply device having an energy storage function (previous technology 2) and a registered patent publication No. 10-1333266 are described an energy management system using an uninterruptible power supply device (previous technology 3).

However, the prior art described above has the following problems.

First, prior art 1 relates to an uninterruptible power supply system using a fuel cell. When supply of commercial system power is interrupted, emergency power is supplied through a hybrid connected fuel cell or a secondary battery of nickel-metal hydride (Ni-MH). However, it describes a technology using a fuel cell that eliminates the time required and improves the performance and life of the fuel cell.

That is, the prior art 1 claims that continuous power supply is possible by supplying the auxiliary power when the supply of the commercial power is cut off. In practice, the supply of the commercial power is cut off and the predetermined time until the auxiliary power is supplied. As this is necessary, practical continuous power supply is impossible.

That is, the operation of the load system is temporarily off and then on again. Looking at the reason for this, 1 cycle for the polarity of a normal AC (AC) power source is 16.666msec in msec units (hereinafter, '16.666msec') The power supply is valid until 1 cycle (16.666 msec) has elapsed even if the power supply is cut off immediately.

It means that the power supply is cut off after 1 cycle (16.666 msec) has elapsed.

However, the battery used as an auxiliary power of a conventional uninterruptible power system has a reaction speed for supplying power of 150 to 200msec, so even if it is quickly detected that the supply of commercial power is cut off, the above 1Cycle(16.666msec) must be passed. Therefore, the operation of the load system is forced to be temporarily turned off.

The second prior art 2, while supplying energy to the load through a rectifier and an inverter, charges the battery through a battery charger, and when a power failure occurs, it is automatically switched to battery mode and stored in the battery under the control of the battery discharger Is supplied as a load, and when peak load occurs or power is insufficient, it operates in battery mode to perform the ESS function.

Third, in the prior art 3, when an ESS function is required when a peak load requiring an ESS function, a power shortage, or a user's need, the EMS 10 turns the switch SW of the input terminal off and switches it off. Accordingly, the UPS 20 recognized as a power outage operates in the battery mode and supplies energy previously stored in the battery to the load L without using commercial power, but when the ESS function is not required, the EMS 10 switches the input terminal switch. On, the UPS 20 supplies commercial power to the load L.

That is, even in the case of the prior art 2 and the prior art 3, even if it is possible to determine the supply cutoff of the commercial power, the above 1 Cycle (16.666 msec) must be elapsed, and thus the operation of the load system must be temporarily turned off. will be.

Accordingly, it will be said that, in addition to solving the above-mentioned problems, development of a circuit configuration and an operation method capable of securing time before commercial power is supplied again is required.

In addition, in the case of an abnormality such as a power failure, instantaneous power failure, or voltage fluctuation in a commercial system, the conventional operation method cannot stably supply power to the consumer. In particular, precision of semiconductors, fibers, oil, steel, etc. In the case of customers with mechanical and major loads, fatal economic and material losses may occur in the event of an abnormality such as a power outage.

Therefore, even when an abnormality such as a system failure or power failure occurs, power can be provided from the power storage system when necessary to continuously supply high-quality power, and the load side is separated from the system so that it can operate independently. Development of a power supply management system is required.

1. Korea Patent Publication No. 10-2011-0133118 2. Korean Registered Patent No. 10-1331183 3. Korean Registered Patent No. 10-1333266

An object of the present invention is to provide an uninterruptible power supply management system and method for detecting whether there is a system abnormality and using a UPS or an ESS and a switch device to stably provide power provided from a power source generator.

An uninterruptible power supply management system according to an embodiment of the present invention includes an uninterruptible power supply management system comprising an uninterruptible power supply system (UPS) including a power supply source and an energy storage system (ESS) including a renewable or diesel power generation device. In claim 1, The load is connected to the power supply source and the uninterruptible power supply system in parallel, a first switch for determining the electrical connection between the power generated by the power source and the load; A second switch for determining an electrical connection between the load and the grid; Control the on/off operation of the first switch and the second switch according to the measured values of the first sensor unit and the first sensor unit to measure the state information of the system, and control the operation of the power supply source and the uninterruptible power supply system It characterized in that it comprises an operation management system including a control unit.

In addition, the first sensor unit measures one or more of the voltage value, current value, and frequency value of the system, and the control unit compares the values of the first sensor portion with predetermined reference ranges to determine the first switch and the first switch. It is characterized by controlling the on/off operation of the 2 switch.

In addition, the predetermined reference ranges include at least one of a voltage range, a current range, and a frequency range, and the control unit is configured in a case of a system abnormality in which one of the values of the system deviates from one of the predetermined reference ranges. The first switch and the second switch are turned off, and the uninterruptible power supply system is controlled to operate.

In addition, the control unit is characterized in that to control the power supply source to operate, to turn on the first switch.

In addition, when the system abnormality is changed to the normal state, the control unit synchronizes the system with the power supply source and the uninterruptible power supply system, sequentially turns on the second switch, and then turns off the first switch. It is characterized by.

In addition, the control unit is characterized in that to synchronize the power supply source and the system to perform a peak reduction operation, and then turn on the first switch and control the output of the power supply source to reach a predetermined output value.

In addition, a second sensor unit for measuring a temperature change, a flow rate change, or a vibration change included in the state of the power supply source is further included, and the control unit determines that there is an abnormality in the power supply source state measured by the second sensor unit. In this case, the first switch and the second switch are turned off.

In addition, the control unit determines that the power supply source is in an abnormal state when the temperature change, the flow rate change, or the vibration change measured by the second sensor unit exceeds a predetermined reference range, and the energy storage system of the uninterruptible power supply system It is characterized in that the second switch is turned on when the energy of (ESS) is exhausted.

In addition, when there is no abnormality in the state of the system and the power source, the controller compares the efficiency of the system and the power source to control on/off operations of the first switch and the second switch, and the efficiency of the system is the power When the efficiency of the supply source is higher, the first switch is turned on, the second switch is turned off, and when the efficiency of the power supply source is higher than the efficiency of the system, the second switch is turned on and the first switch is turned off. .

Further, the power supply source is the renewable power generation device, a solar power generation device, a wind power generation device, and a small hydro power generation device, and the uninterruptible power supply management system observes and analyzes weather to generate a weather observation unit that generates analysis information. Further comprising, the control unit is characterized in that to select one of the solar power generation device, the wind power generation device and the small-scale power generation device in accordance with the analysis information generated by the meteorological observation unit to receive power.

In addition, the uninterruptible power supply management system may further include a mobile terminal that can be monitored and controlled by an administrator by receiving information of the uninterruptible power supply management system.

In addition, the load is provided with one or more, the uninterruptible power supply management system further includes a third sensor unit for measuring the total power consumption of the load, the control unit is the total consumption of the load measured by the third sensor unit When the power value is greater than the power value supplied from the grid or power supply source, the uninterruptible power supply system is operated to supply power to the load, and the load from the grid or power supply source and the uninterruptible power supply system is applied to the load. It is characterized by being distributed to.

In addition, the controller predicts a recovery period to be restored to a normal state when an abnormality is found in the system state, and the uninterruptible power supply management system uses the power supply source and the uninterruptible power supply system according to the predicted recovery period. It further comprises a establishing unit for establishing a plan, wherein the control unit controls on/off of the first switch according to the use plan established from the establishing unit and controls the uninterruptible power supply system.

A method for managing uninterruptible power supply according to an embodiment of the present invention includes a sensor unit in a method of managing uninterruptible power supply by controlling an uninterruptible power supply system (UPS) including a power supply source and an energy storage system (ESS) A first step of measuring at least one of a voltage value, a current value and a frequency value of the system through; In the case of a system abnormality in which one of the values measured in the first step is out of a predetermined reference range, the first switch electrically connecting the power supply and the load and the second switch electrically connecting the load and the grid are turned off. A second step of making;

A third step of operating the uninterruptible power supply system; A fourth step of activating the power supply source and turning on the first switch; A fifth step of synchronizing the grid with the power supply source and the uninterruptible power supply system and sequentially turning on the second switch and turning off the first switch when the system abnormal state is changed to a normal state; The sixth step of synchronizing the power supply source and the system to perform a peak reduction operation, turning on the first switch and controlling the output of the power supply to reach a predetermined output value, and detecting that the power supply source is in an abnormal state If it is possible, it characterized in that it comprises a seventh step of turning off the first switch.

According to an aspect of the present invention, even when there is a system abnormality in power provided from a power supply source, power can be stably provided to a load without a power failure.

In addition, it is possible to effectively monitor abnormalities such as voltage generated in the power supply source to maintain the quality of power to be provided to the system and the load.

1 is a schematic diagram showing the configuration of an uninterruptible power supply management system according to an embodiment of the present invention according to an embodiment of the present invention.
2 is a block diagram showing the configuration and function of an uninterruptible power supply management system according to an embodiment of the present invention according to an embodiment of the present invention.
FIG. 3 is a schematic diagram showing the configuration of a meteorological observation unit and a mobile terminal in FIG. 1.
FIG. 4 is a block diagram showing the configuration of the weather observation unit in FIG. 2.
5 to 7 are flowcharts illustrating a process of an uninterruptible power supply management method according to an embodiment of the present invention according to an embodiment of the present invention.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various conversions may be applied and various embodiments may be provided. In addition, it should be understood that the contents described below include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

In the following description, terms such as first and second are terms used to describe various components, and are not limited in meaning to themselves, and are used only to distinguish one component from other components. In addition, the same reference numbers used throughout this specification indicate the same components.

The singular expression used in the present invention includes the plural expression unless the context clearly indicates otherwise. In addition, terms such as “include”, “have” or “have” described below are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. It should be interpreted and understood to not preclude the existence or addition possibility of one or more other features, numbers, steps, actions, components, parts or combinations thereof.

Hereinafter, with reference to the accompanying drawings in detail with respect to the uninterruptible power supply management system and method according to an embodiment of the present invention will be described with reference to specific embodiments.

First, the configuration of the uninterruptible power supply management system according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

1 is a schematic diagram showing the configuration of an uninterruptible power supply management system according to an embodiment of the present invention according to an embodiment of the present invention, and FIG. 2 is an uninterruptible power supply management according to an embodiment of the present invention according to an embodiment of the present invention 3 is a schematic diagram showing the configuration and function of the system, FIG. 3 is a schematic diagram showing the configuration of the meteorological observation unit and the mobile terminal in FIG. 1, and FIG. 4 is a block diagram illustrating the configuration of the meteorological observation unit in FIG.

1 and 2, the uninterruptible power supply management system 100 according to an embodiment of the present invention according to an embodiment of the present invention includes a system 5, a power supply source 10, and an uninterruptible power supply system (UPS, 20), load (Load, 30), the first switch 40, the second switch 50, the control unit 60, the first sensor unit 70 and the second sensor unit 80, and It can be done.

The power supply source 10 may be a renewable power generation unit or a diesel power generation unit, and a small-sized hydroelectric power generation device is preferably a small-sized hydroelectric power generation unit. In particular, the small-sized hydroelectric power generation unit is based on the flow of water of a huge dam or river having a considerable size. A form of a power generation device that performs hydro power generation using a small-scale water flow may be applied instead of the hydro power generation form.

In addition, the power supply source 10 is a new and renewable power generation device, and may include a plurality of power generation devices of different types, including a solar power generation device, a wind power generation device, and a small hydro power generation device.

In addition, the uninterruptible power supply system (UPS, 20) is a system for providing power to the load 30 by detecting when power is not properly supplied to the load (Load, 30) due to an abnormality in the system, specifically It may be provided in a form that includes an energy storage system (ESS).

In addition, the load (Load, 30) is a portion that consumes the load 30, that is, the supplied power, which corresponds to a general electronic product or electronic equipment.

Also, one or more loads 30 may be provided.

In addition, the first switch 40 determines the electrical connection between the power generated from the power supply source 10 and the load 30 according to the on state or the off state. The first switch 40 may be turned on or off according to the control signal from the controller 60.

In addition, the second switch 50 determines the electrical connection between the load 30 and the system 5 according to the on state or the off state. The second switch 50 may be turned on or off according to the control signal from the controller 60.

In addition, the first sensor unit 70 measures state information of the system 5. That is, the first sensor unit 70 measures voltage, current, frequency, or power of the system 5 to measure information for determining whether the state of the system 5 is abnormal or normal. Specifically, the first sensor unit 70 may measure one or more of a voltage value, a current value, a frequency value, and a power value of the system 5.

In addition, the second sensor unit 80 measures temperature change, flow rate change, vibration change, or power value, which is state information included in the state of the power supply source 10. That is, the second sensor unit 80 may include one or more of a temperature sensor, a flow sensor, a vibration sensor, and a power sensor to measure the main state of the power supply source 10.

In addition, the control unit 60 basically controls the on/off states of the first switch 40 and the second switch 50 as shown in FIGS. 1 to 2. Specifically, the control unit 60 controls on/off operations of the first switch 40 and the second switch 50 according to the measured values of the first sensor unit 70 or the second sensor unit 80. In addition, the control unit 60 controls the operation of the power supply source 10 and the uninterruptible power supply system 20.

In addition, the control unit 60 controls the on/off operation of the first switch 40 and the second switch 50 by comparing the numerical values of the first sensor unit 70 with predetermined reference ranges. Specifically, the predetermined reference ranges may include one or more of a voltage range, a current range, and a frequency range. In addition, the control unit 60 turns off the first switch 40 and the second switch 50 in the case of a system abnormality in which one of the values of the system 5 is out of one of the predetermined reference ranges, and supplies uninterruptible power. The system 20 can be controlled to operate.

This control operation is a process of separating the system 5 when the system 5 has an abnormality (so that the load 30 is also separated from the power supply source 10), and supplying uninterruptible power after the system 5 is removed. The system 20 is operated so that auxiliary power is supplied to the load 30.

In addition, after controlling the operation of the first switch 40 and the second switch 50 and the uninterruptible power supply system 20 in the system abnormal state, the controller 60 controls the power supply source 10 to operate. , Performs a control operation to turn on the first switch 40. This control operation process allows the uninterruptible power supply system 20 to be operated to operate the power supply source 10 in a situation in which auxiliary power is supplied to the load 30, and the power supply source 10 and the uninterruptible power supply system 20 This is a control process that enables ESS to perform synchronous parallel operation.

In addition, when the abnormal state of the system 5 is changed to the normal state, the control unit 60 synchronizes the system 5, the power supply source 10, and the uninterruptible power supply system 20, and sequentially turns the second switch 50 ), and then perform a control operation to turn off the first switch 40.

In the control operation process, when the system 5 returns to the normal state, the second switch 50 is turned on after synchronizing the power supply source 10 and the uninterruptible power supply system 20 and the system 5 This is a process of turning the first switch 40 off. That is, when the system 5 returns to the normal state, the system 5 is synchronized with the power supply source 10 and the uninterruptible power supply system 20 without connecting the system 5 immediately, and then the system 5 is connected to the system 5. The second switch 50 for electrical connection is turned on, and finally, the state of the first switch 40 for electrical connection release with the power supply source 10 is turned off.

In addition, the control unit 60 synchronizes the power supply source 10 and the system 5 to perform a peak reduction operation, and then turns on the first switch 40 so that the output of the power supply source 10 reaches a predetermined output value. Can be controlled. That is, the control operation of the control unit 60 is to perform parallel operation of the power supply source 10 and the system 5 as a control operation for performing the peak reduction operation, the power supply source 10 and the system 5 After synchronizing, the first switch 40 is turned on, and finally it is an operation process of controlling (governor control) so that the output of the power supply source 10 has a predetermined output value to match the peak reduction operation. Specifically, it is a process of controlling the power supply source 10 to reach a predetermined reduction amount. At this time, the control unit 60 controls the power supply source 10 and the system 5 to prevent the occurrence of a reverse current. can do.

In addition, the control unit 60 may perform a control operation based on the state information (temperature change, flow rate change, or vibration change) of the power supply source 10 measured by the second sensor unit 80, specifically, the control unit ( 60) determines that the power supply source 10 is in an abnormal state when the temperature change, flow rate change, or vibration change measured by the second sensor unit 80 is outside a predetermined reference range, and accordingly, the power supply source 10 In order to release the connection state of the first switch 40 is turned off while the second switch 50 is also controlled to be off. This control process is to ensure that the energy of the energy storage system (ESS) included in the uninterruptible power supply system (UPS) is consumed first when an abnormality occurs in the power supply source. After the energy of the energy storage system ESS is consumed, the controller 60 turns on the state of the second switch 50 so that the power of the system 5 is used.

In the control process as described above, basically, the second sensor unit 80 may measure voltage change, frequency change, and heat amount change (indicators indicating power quality) of the power supply source 10, based on these values. The condition of (10) can be monitored and when the abnormality occurs (the abnormality occurs in temperature, flow rate, or vibration), the first switch 40 is opened (off) to cause the abnormality of the power supply source 10 to affect the entire system. The control unit 60 can control it not to be insane.

In addition, when there is no abnormality in the state of the system 5 and the power supply source 10, the control unit 60 compares the efficiency of the system 5 and the power supply source 10 to compare the first switch 40 and the second switch ( The on/off operation of 50) can be controlled.

At this time, the efficiency comparison may be made by comparing one or more of the power value of the system 5 and the power supply source 10, a power value that is a power value/total operating cost, and an amount of power that can be supplied.

Specifically, when the efficiency of the system 5 is higher than that of the power supply source 10, the second switch 50 may be turned on and the first switch 40 may be turned off.

In addition, when the efficiency of the power supply source 10 is higher than that of the system 5, the first switch 40 may be turned on and the second switch 50 may be turned off.

Preferably, the efficiency is compared by comparing the power unit cost of the system 5 and the power unit cost of the power supply source 10. When the power value sufficient to supply power to the load 30 is displayed, the power unit cost is compared. It is possible to increase the efficiency economically by using an inexpensive source.

This is to enable efficient supply of power to the load 30 using a more efficient source.

In addition, referring to FIGS. 3 and 4, the uninterruptible power supply management system 100 according to an embodiment of the present invention may further include a weather observation unit 90.

The weather observation unit 90 may observe and analyze the weather to generate analysis information, and transmit the generated analysis information to the control unit 60.

Specifically, the meteorological observation unit 90 observes and analyzes the weather, predicts the amount of electric energy generated in the photovoltaic device, the wind power generation device, and the small hydro power generation device of the power supply source 10 according to the weather, and the power accordingly Analysis information can be generated by predicting efficiency.

That is, by analyzing the sunlight intensity, wind intensity, and precipitation of the weather, it is possible to generate analysis information that predicts power efficiency of the solar power generation device, the wind power generation device, and the small hydro power generation device, which are the power supply sources 10.

The meteorological observation unit 90 transmits this analysis information to the control unit 60, and at this time, the control unit 60 selects one of a solar power generation device, a wind power generation device, and a small hydro power generation device according to the received analysis information to power. Can be supplied.

This is such that when the first switch 40 is turned on, only one of the photovoltaic devices, the wind power generation device and the small hydro power generation device, which are the power supply sources 10, is connected (operated) and stored or generated power is supplied to the load 30 side. do.

That is, in the case of using the power supply source 10 by turning on the first switch 40 in the uninterruptible power supply management system 100, power is supplied from the power generation device having the highest power efficiency using the weather observation unit 90. It is to control to receive.

In addition, referring to Figure 3, the uninterruptible power supply management system 100 according to an embodiment of the present invention may further include a mobile terminal 200.

The mobile terminal 200 includes a smart phone, a laptop, a tablet, and the like, and receives information from the uninterruptible power supply management system 100 to be monitored by an administrator, and transmits control commands when necessary to provide an uninterruptible power supply management system ( 100).

For example, the mobile terminal 200 is wirelessly connected to the control unit 60 of the uninterruptible power supply management system 100, the system (5) status information, power supply source (10) status information, meteorological observation unit (90) Analysis information can be checked.

In addition, when an abnormality is found in the state of the system 5 or an abnormality is found in the state of the power supply source 10, the administrator can know in real time and can manage it without time and space limitations. That is, the manager can solve the abnormality of the system 5 or the power supply source 10 immediately when an abnormality occurs.

In addition, the administrator can freely control the uninterruptible power supply management system 100 as desired according to the information received from the uninterruptible power supply management system 100.

Through this, the administrator can always manage the uninterruptible power supply management system 100 with less time and space constraints, and if an abnormality occurs, the administrator can know immediately and the time to resolve the abnormality can be shortened.

In addition, the uninterruptible power supply management system 100 may further include a third sensor unit (not shown).

The third sensor unit (not shown) measures the total power consumption value of the load 30. That is, the third sensor unit (not shown) may be provided as a power sensor to measure the total power consumption value of one or more loads 30.

In addition, the third sensor unit (not shown) is installed on each of the loads 30 when two or more loads 30 are provided, measures the power consumption value of each load 30 and then adds the power consumption values. In this way, the total power consumption value may be transmitted to the controller 60, but the power consumption values measured by the controller 60 may be received and summed to obtain a total power consumption value.

Accordingly, when the total power consumption value of the load 30 measured by the third sensor unit (not shown) is greater than the value supplied from the system 5 or the power supply source 10, the control unit 60 may provide an uninterruptible power supply system ( 20) can be operated to be supplied to the load (30).

At this time, the power of the system 5 or the power supply source 10 and the uninterruptible power supply system 20 may be distributed and supplied to the load 30.

This prevents overloading of the system 5 or the power supply source 10 by supplying insufficient power to the load 30 from the uninterruptible power supply system 20 to the system 5 or the power supply source 10 and due to insufficient power. It is possible to prevent the operation of the load 30 (off).

For example, when a sudden surge in the load 30 occurs, power consumption may fluctuate rapidly, causing an overload in the system 5 or the power supply source 10, and an abnormality in the operation of the load 30 with insufficient power may occur. It is to prevent what can happen.

In addition, the uninterruptible power supply management system 100 may further include a establishing unit (not shown).

The establishment unit (not shown) may establish a use plan of the power supply source 10 and the uninterruptible power supply management system 20 according to the predicted recovery period from the control unit 60.

That is, the establishing unit (not shown) is to establish a use plan to efficiently supply power to the load 30 through the power supply source 10 and the uninterruptible power supply management system 20 during the predicted recovery period.

To this end, the establishment unit (not shown) predicts the amount of generated electric energy of the power supply source 10 which is a power generation device during the recovery period, and the power supply source 10 or the uninterruptible power supply management system 20 during the recovery period is predicted. You can plan over time to decide whether to use it.

Here, the establishment unit (not shown) receives the prediction information of the amount of electric energy generated according to the weather from the meteorological observation unit 90 and may reflect the prediction information in establishing the use plan.

At this time, when the abnormality is found in the state of the system 5, the control unit 60 may predict the recovery period to be restored to the normal state. Here, the control unit 60 may predict the recovery period by referring to the system information measured from the first sensor unit 70.

In addition, the control unit 60 may control the on/off of the first switch 40 according to the use plan established by the establishment unit (not shown) to control the power supply of the power supply source 10, and supply the uninterruptible power. The operation of the system 20 can be controlled.

Accordingly, it is possible to efficiently supply power to the load 30 by establishing a use plan in anticipation of a case in which the amount of electric energy generated to supply power to the load 30 from the power supply source 10 is insufficient. It can prevent the operation stop (off) of the.

Next, a detailed process of an uninterruptible power supply management method according to an embodiment of the present invention according to an embodiment of the present invention will be described below with reference to FIGS. 5 to 7.

5 to 7 is a flow chart showing the process of the uninterruptible power supply management method according to an embodiment of the present invention.

First, the process of the uninterruptible power supply management method according to the embodiment of the present invention shown in FIG. 5 measures one or more of the voltage value, current value and frequency value of the system through the sensor unit (first step, S31), and It is determined whether or not (S32). Then, according to whether the system is abnormal, the first switch for electrically connecting the power supply source and the load and the second switch for electrically connecting the load and the grid are turned off when the system is in an abnormal state (second step, S33). . If the system is not in an abnormal state, the state of the system is continuously measured through the sensor unit (return to S31).

In the case of a system abnormality, the uninterruptible power supply system is operated to allow power to be supplied to the load (3rd step, S34). Then, after the power supply source is activated, the first switch is turned on (step 4, S35).

Next, as shown in FIG. 6, it is determined whether the system is normal (S41), and if the system is normal, the power supply source and the uninterruptible power supply system are synchronized (S42), and the second switch is turned on. 1 Turn the switch off (step 5, S43).

If the system is not in a normal state, the process returns to step S33.

Then, in performing the peak reduction operation, the power supply source and the system are synchronized (S44), and after the first switch is turned on (S45), the output of the power supply source is controlled to reach a predetermined output value (step 6, S46).

Finally, as shown in FIG. 7, it is determined whether the power supply source is in an abnormal state (S51), and if it is in an abnormal state, the states of the first switch and the second switch are turned off, and then the energy storage system (ESS) ), the second switch is turned on when the energy is exhausted (7th step, S52).

If it is not in an abnormal state, it continuously checks whether the power supply source is in an abnormal state (return to S51).

In the above, the uninterruptible power supply management system and method according to an embodiment of the present invention have been described with reference to specific embodiments. However, the present invention is not limited only to the scope of the above-described embodiments, and some modifications and variations will be possible. Therefore, the claims of the present invention will include modifications and variations that fall within the true scope of the present invention.

5: System 10: Power supply source
20: uninterruptible power supply system (UPS) 30: load
40: first switch 50: second switch
60: control unit 70: first sensor unit
80: second sensor unit 90: meteorological observation unit
100: uninterruptible power supply management system
200: mobile terminal

Claims (1)

A power supply source including a renewable or diesel generator;
An uninterruptible power supply system (UPS) including an energy storage system (ESS);
A load connected in parallel with the power supply source and the uninterruptible power supply system;
A first switch for determining an electrical connection between the power generated by the power supply source and a load;
A second switch for determining an electrical connection between the load and the grid;
A first sensor unit for measuring state information of the system;
A second sensor unit for measuring temperature change, flow rate change, vibration change, and power value included in the state of the power supply source, and
An operation management system including a control unit controlling on/off operations of the first switch and the second switch according to the measured values of the first sensor unit or the second sensor unit, and controlling the operation of the power supply source and the uninterruptible power supply system. Including,
The first sensor unit measures the voltage value, current value, frequency value, and power value of the system,
The second sensor unit includes a temperature sensor, a flow sensor, a vibration sensor and a power sensor,
The control unit controls the on/off operation of the first switch and the second switch by comparing values of the first sensor unit and predetermined reference ranges,
The control unit controls the uninterruptible power supply system to operate after turning off the first switch and the second switch in the case of a system abnormality in which one of the numerical values of the system is outside one of the predetermined reference ranges, Control the power supply source to operate, turn on the first switch,
The controller synchronizes the system with the power supply source and the uninterruptible power supply system when the system abnormal state is changed to a normal state, sequentially turns on the second switch, and then turns off the first switch,
The controller controls the first switch and the second switch when it is determined that one of the temperature change, flow rate change, vibration change, and power value measured by the second sensor unit is outside the predetermined reference range and there is an abnormality in the power supply source state. Turn off to enable the uninterruptible power supply system to operate after the system separation, so that auxiliary power is supplied to the load, and turn on the second switch when energy is exhausted from the energy storage system (ESS) of the uninterruptible power supply system,
The control unit,
When there is no abnormality in the state of the system and the power source, compare the efficiency of the system and the power source to control the on/off operation of the first switch and the second switch,
When the efficiency of the system is higher than the efficiency of the power supply source, the first switch is turned on and the second switch is turned off,
When the efficiency of the power supply source is higher than the efficiency of the system, the second switch is turned on and the first switch is turned off,
Comparison of the efficiency of the system and the power source,
Compare the power number of the system and power supply source, the power number/power unit price, which is the total operating cost, and the amount of power that can be supplied.
Weather that observes and analyzes weather, predicts the amount of electric energy generated from the power source according to the weather, and predicts the power efficiency of the power source according to the prediction information of the amount of electric energy generated according to the weather to generate analysis information Further comprising an observation unit,
The control unit,
When an abnormality is found in the system state, a recovery period is restored to a normal state,
Further comprising a establishing unit for establishing a plan for using the power supply source and the uninterruptible power supply system according to the predicted recovery period by reflecting the prediction information of the amount of electric energy generated according to the weather received from the weather observation unit,
The control unit controls the on/off of the first switch according to the usage plan established by the establishment unit and controls the uninterruptible power supply system,
The load is provided with one or more,
Further comprising a third sensor unit for measuring the total power consumption of the load,
The control unit,
When the total power consumption value of the load measured by the third sensor unit is greater than the power value supplied from the grid or power source, the uninterruptible power supply system is operated to supply power to the load, and the grid or power source And distributes the power of the uninterruptible power supply system to the load,
Further comprising a mobile terminal that can be monitored and controlled by an administrator by receiving the information of the uninterruptible power supply management system,
The power supply source,
Solar power generation device, wind power generation device and small hydro power generation device,
The control unit,
An uninterruptible power supply management system characterized by receiving the analysis information from the meteorological observation unit and selecting one of a photovoltaic power generation device, a wind power generation device, and a small hydro power generation device to receive power.

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