KR20160085085A - Overheating protection apparatus and method of electronic power meter - Google Patents

Overheating protection apparatus and method of electronic power meter Download PDF

Info

Publication number
KR20160085085A
KR20160085085A KR1020150002016A KR20150002016A KR20160085085A KR 20160085085 A KR20160085085 A KR 20160085085A KR 1020150002016 A KR1020150002016 A KR 1020150002016A KR 20150002016 A KR20150002016 A KR 20150002016A KR 20160085085 A KR20160085085 A KR 20160085085A
Authority
KR
South Korea
Prior art keywords
current
temperature
unit
sensing unit
latch relay
Prior art date
Application number
KR1020150002016A
Other languages
Korean (ko)
Inventor
김주붕
하충목
송근창
김영대
Original Assignee
주식회사 평일
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 평일 filed Critical 주식회사 평일
Priority to KR1020150002016A priority Critical patent/KR20160085085A/en
Publication of KR20160085085A publication Critical patent/KR20160085085A/en

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02—Constructional details

Abstract

An apparatus and method for overheating an electronic watt-hour meter are disclosed.
A setting unit 10 for setting information for preventing overheat of a watt-hour meter including a set temperature and a rated current corresponding to the specification of the watt-hour meter, and a setting unit 10 for setting the information of the parts including the latch relay 41 in the case 100 constituting the watt- A temperature sensing unit 21 for sensing an ambient temperature, a current sensing unit 22 sensing a current flowing through the latch relay 41, a temperature and current sensing unit 22 sensed by the temperature sensing unit 21, The temperature sensed by the temperature sensing unit 21 is higher than the set temperature set by the setting unit 10 or the current sensed by the setting unit 10 is compared with the set temperature and the rated current set by the setting unit 10, A controller 30 for outputting a drive signal for cooling components including the latch relay 41 when the current sensed by the sensing unit 22 is higher than the rated current set by the setting unit 10, 30, And a blowing fan driving unit 50 for cooling the components including the latch relay 41 by driving the blowing fan 51. In this way, the components including the latch relay constituting the watt- It is possible to prevent overheating of the battery.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an overheat protection apparatus and an electronic power meter,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for preventing overheating of an electronic watt-hour meter, and more particularly to an apparatus and method for preventing overheat of an electronic watt- And methods.

Generally, Power Line Communication (PLC) is a method of communicating data by transmitting power on a high frequency signal using a power line as a medium, and uses a power line that is installed for power supply without additional wiring.

Such power line communication is used in various fields such as home networking such as high-speed internet communication, internet telephone, control of home appliances, home banking, and remote meter reading system. Since the optical communication cable already built can be used, Recently, it has been activated due to advantages of communication charges.

For example, an electronic watt-hour meter in which the remote meter reading technique is implemented using the above-described power line communication (PLC) can be exemplified.

Since the electronic watt hour meter has no mechanical moving parts as compared with the mechanically constructed induction watt hour meter, it has been developed and released in various forms since it has the advantage that the meter reading value is reliable and stable and can be downsized through circuit integration.

Such an electronic watt-hour meter must be equipped with a PLC modem in order to apply the remote meter reading technology using power line communication. The PLC modem is configured to be built in or detachable so that power line communication is possible.

In addition, a conventional electronic watt-hour meter measures and stores voltage, current, and metering values, and transmits metering data based on the serial number to a higher-level operating device through a power line communication modem or an RF modem.

Then, the meter reading server of the operating device receives the metering data transmitted from the electronic watt hour meter and searches the personal number such as the description of the customer using the metering data, the resident number, and the address. The meter reading server manages data on the customer by providing electricity billing and related services by linking the metering data with information on the customer.

Thus, the conventional electronic watt-hour meter is not structured to authenticate the consumer, but operates in a form in which the consumer and the electronic watt-hour meter are linked with each other in the operating device. As a result, the conventional electronic watt-hour meter can not accurately confirm the point-in-time and the point-in-time of update information when the customer is changed, and there are many cases where the personal information of the existing customer is used instead of the actual customer.

Conventionally, in order to efficiently manage the power-related information used by the customer and the corresponding customer, the electronic watt-hour meter is equipped with a USIM card that stores USIM information including personal information of a customer and existing authentication information.

In the conventional charging method, there are a post-pay type electronic watt-hour meter for charging the cost of the electric power consumed by the customer for a certain period and a prepayment electronic watt-hour meter for paying in advance the cost for the electric power amount to be used by the customer. The watt-hour meter has a function of measuring the amount of power consumed by the customer and a latch relay that can forcibly block the power of the customer from the remote place.

In addition, the electronic watt-hour meter described above can block the current by driving the latch relay even when there is an abnormality in the current supplied to the customer as well as the customer who has not paid the fare. In the case of the latch relay There is a problem that the electric current supplied to the customer is interrupted by the overheat or the overcurrent, thereby inconveniencing the customer.

Domestic registered patent No. 10-1206558 (Registration notice of Nov. 29, 2012)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to provide an overheat prevention apparatus and method for preventing overheat of components constituting an electronic watt-hour meter including a latch relay due to an overcurrent or a standby current. There is a purpose.

The above object of the present invention can be achieved by a setting unit for setting information for preventing overheat of a watt hour meter including a set temperature and a rated current corresponding to a standard of a watt hour meter; A temperature sensing unit for sensing an ambient temperature of components including a latch relay in a case constituting the watt hour meter; A current sensing unit for sensing a current flowing through the latch relay; The temperature sensed by the temperature sensing unit and the current sensed by the current sensing unit are compared with the set temperature and the rated current set by the setting unit, A controller for outputting a driving signal for cooling components including the latch relay when the current sensed by the current sensing unit is higher than a set temperature or higher than a rated current set by the setting unit; And an air blowing fan driving unit driving the blowing fan by the driving signal of the controller to cool the components including the latch relay.

In the present invention, the case is characterized in that it has at least two air vents for circulation of air for cooling components including the latch relay.

In the present invention, the controller may be configured such that the temperature sensed by the temperature sensing unit is higher than the preset temperature set by the setting unit, or the current sensed by the current sensing unit, And outputs a shutoff signal to the latch relay driving unit to shut off the power supplied to the customer.

It is still another object of the present invention to provide a method of controlling a watt hour meter, comprising: a first step of setting information for preventing overheat of a watt-hour meter including a set temperature and a rated current corresponding to a standard of a watt- A second step of sensing an ambient temperature of the components including the latch relay in the case constituting the watt hour meter by the temperature sensing unit; A third step of sensing a current flowing through the latch relay by the current sensing unit; The temperature sensed by the temperature sensing unit and the current sensed by the current sensing unit are compared with the set temperature and the rated current set by the setting unit, When the controller senses that the current sensed by the current sensing unit is higher than the preset reference temperature or the current sensed by the current sensing unit is higher than the rated current set by the setting unit, the controller outputs a drive signal for cooling components including the latch relay to the blower fan driving unit Step 4; And a fifth step of cooling the components including the latch relay by driving the blowing fan with the driving signal received from the controller by the blowing fan driving unit.

In the present invention, the controller may be configured such that the temperature sensed by the temperature sensing unit is higher than the preset temperature set by the setting unit, or the current sensed by the current sensing unit, And outputs a shutoff signal to the latch relay driving unit to shut off the power supplied to the customer.

According to the present invention, when a blowing fan is provided in a case constituting each component including a latch relay of a watt-hour meter and a component including the latch relay is overheated or an overcurrent flows, the blowing fan is driven to cool the component, So that the normal operation of the watt hour meter including the latch relay can be maintained without interrupting the power supplied to the customer.

1 is a configuration diagram of an overheat prevention device for an electronic watt hour meter according to an embodiment of the present invention.
Fig. 2 is a flowchart showing a method of preventing the electronic watt-hour meter from overheating by the configuration of Fig.
3 is a perspective view showing a main part of an electronic watt-hour meter according to an embodiment of the present invention.
4A to 4D are perspective views illustrating an internal structure of an electronic watt-hour meter according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an overheat prevention device for an electronic watt hour meter according to an embodiment of the present invention.

1, the electronic watt hour meter overheating prevention apparatus according to the present invention includes a setting unit 10, a temperature sensing unit 21, a current sensing unit 22, a controller 30, a latch relay driving unit 41, A latch relay 41, a blowing fan driving unit 50, a blowing fan 51, a consumer 60, a power supply unit 70, and an LCD 80.

Specifically, the setting unit 10 includes a setting unit 10 having buttons for setting information for preventing overheat of a watt-hour meter including a set temperature and a rated current corresponding to the standard of the watt-hour meter, a latch relay (not shown) A temperature sensing unit 21 for sensing the ambient temperature of components including the temperature sensor 41, a current sensing unit 22 for sensing the current flowing through the latch relay 41, The current sensed by the current sensing unit 22 is compared with the set temperature and rated current set by the setting unit 10 so that the temperature sensed by the temperature sensing unit 21 is set by the setting unit 10 A controller for outputting a drive signal for cooling components including the latch relay 41 when the current detected by the current sensing section 22 is higher than the rated current set by the setting section 10, (30) and the control Driving the air blowing fan 51 by the drive signal of the multiple 30 is composed of blowing fan driver 50 to cool the component comprising a latching relay (41).

Here, the controller 30 determines whether the temperature sensed by the temperature sensing unit 21 is higher than the preset temperature set by the setting unit 10 or is sensed by the current sensing unit 22 When the current is higher than the rated current set by the setting unit 10, a shutoff signal is outputted to the latch relay driver 40 to shut off the power supplied to the customer 60.

The latch relay 41 is a relay that uses an iron core having a large coercive force to maintain the magnetic force even after the operation of the contact breaks the exciting current, and the contact is returned by the reverse excitation current. So that the current other than the first pulse is not consumed even when the standby current flowing into the receptacle 60 is shut off.

A consumer (60) or home appliance refers to a home appliance such as a TV that requires a standby power interruption function.

The power supply unit 70 supplies power to the controller 30, the latch relay 41 and the LCD 80. The power supply unit 70 may be a battery or a battery or a power source that converts an external power source such as an AC power source.

The LCD 80 displays various operation modes, a standby current value, a voltage, an accumulated power usage amount, a current, an accumulated usage fee, a carbon dioxide emission amount, a one month forecast usage charge, a power factor, and a power consumption.

FIG. 3 is a perspective view showing a main part of an electronic watt-hour meter according to an embodiment of the present invention, and FIGS. 4a to 4d are perspective views showing an internal structure of an electronic watt-hour meter according to an embodiment of the present invention.

3 and 4A-4D, the case 100 of the electronic watt-hour meter may have two or more air vents 110 for circulation of air to cool components including the latch relay 41 . The above two or more air vents 110 are provided with circulation by discharging hot internal air and sucking external air.

4A to 4D, the blowing fan 51 for cooling various components including the latch relay 41 installed in the case 100 is provided with various It can be installed in any way.

Fig. 2 is a flowchart showing a method of preventing the electronic watt-hour meter from overheating by the configuration of Fig.

2, in order to prevent the electronic watt hour meter from overheating, the operator operates the setting unit 10 to set information for preventing overheat of the watt-hour meter including the set temperature and the rated current corresponding to the standard of the watt-hour meter (S11 ).

The temperature sensing unit 21 senses the ambient temperature of the components including the latch relay 41 in the case 100 constituting the watt hour meter with the set temperature and the rated current for preventing the overheat of the electronic watt- S12) to the controller 30 and the current sensing unit 22 senses the current flowing through the latch relay 41 (S14) and provides the controller 30 with the current.

The controller 30 sets the temperature sensed by the temperature sensing unit 21 and the current sensed by the current sensing unit 22 to the setting unit 10 The temperature detected by the temperature sensor 21 is higher than the preset temperature set by the setting unit 10 or the current sensed by the current sensor 22 The controller 30 outputs a drive signal for cooling the components including the latch relay 41 to the blower fan driving unit 50 (S16).

Therefore, when the internal temperature is higher than the set temperature or the current flowing through the latch relay 41 is higher than the rated current, the blowing fan 51 is driven by the blowing fan driving part 50 which receives the driving signal from the controller 30 The components including the latch relay 41 can be cooled.

Furthermore, in the embodiment of the present invention, the temperature sensed by the temperature sensing unit 21 is continuously higher than the preset temperature set by the setting unit 10, The controller 30 outputs a shutoff signal to the latch relay driver 40 to shut off the power supplied to the consumer 60. The shutdown signal is output to the latch relay driver 40 when the current sensed by the controller 30 is continuously higher than the rated current set by the setting unit 10. [ , It is possible to prevent safety accidents due to overheating and the like in advance.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

10: setting unit 21: temperature sensing unit
22: current sensing unit 30: controller
40: latch relay driver 41: latch relay
50: blower fan driving part 51: blower fan
60: consumer 70: power source
80: LCD 100: Case
110: air vents

Claims (6)

A setting unit (10) for setting information for preventing overheat of a watt hour meter including a set temperature and a rated current corresponding to a standard of the watt hour meter;
A temperature sensing part (21) for sensing an ambient temperature of components including the latch relay (41) in the case (100) constituting the watt hour meter;
A current sensing unit 22 for sensing a current flowing through the latch relay 41;
The temperature detected by the temperature sensing unit 21 and the current sensed by the current sensing unit 22 are compared with the set temperature and the rated current set by the setting unit 10, Is higher than the set temperature set by the setting unit 10 or the current sensed by the current sensing unit 22 is higher than the rated current set by the setting unit 10, A controller (30) for outputting a drive signal for cooling components including the latch relay (41); And
A blowing fan driving unit 50 for driving the blowing fan 51 by the driving signal of the controller 30 to cool the components including the latching relay 41;
And an overheat prevention device for the electronic watt hour meter.
The method according to claim 1,
Wherein the case (100) has an air ventilation hole (110) for circulating air for cooling components including the latch relay (41).
3. The method of claim 2,
Wherein the air ventilation hole (110) is formed in two or more.
The method according to claim 1,
The controller 30 determines whether the temperature sensed by the temperature sensing unit 21 is higher than the preset temperature set by the setting unit 10 or the current sensed by the current sensing unit 22 When the sensed current is higher than the rated current set by the setting unit (10), a shutoff signal is outputted to the latch relay driver (40) to shut off the power supplied to the consumer (60) Prevention device.
A first step of operating the setting unit (10) to set information for preventing overheat of a watt hour meter including a set temperature and a rated current corresponding to a standard of the watt hour meter;
A second step of sensing an ambient temperature of components including the latch relay 41 in the case 100 constituting the watt hour meter by the temperature sensing unit 21;
A third step of sensing a current flowing through the latch relay 41 by the current sensing unit 22;
The temperature detected by the temperature sensing unit 21 and the current sensed by the current sensing unit 22 are compared with the set temperature and the rated current set by the setting unit 10, Is higher than the set temperature set by the setting unit 10 or the current sensed by the current sensing unit 22 is higher than the rated current set by the setting unit 10, A fourth step of the controller (30) outputting a driving signal for cooling parts including the latch relay (41) to the blowing fan driving part (50); And
A fifth step of cooling the parts including the latch relay 41 by driving the blowing fan 51 by receiving the driving signal from the controller 30 by the blowing fan driving part 50;
And an overheat prevention unit for preventing overheat of the electronic watt hour meter.
6. The method of claim 5,
The controller 30 determines whether the temperature sensed by the temperature sensing unit 21 is higher than the preset temperature set by the setting unit 10 or the current sensed by the current sensing unit 22 When the sensed current is higher than the rated current set by the setting unit (10), a shutoff signal is outputted to the latch relay driver (40) to shut off the power supplied to the consumer (60) How to prevent.
KR1020150002016A 2015-01-07 2015-01-07 Overheating protection apparatus and method of electronic power meter KR20160085085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150002016A KR20160085085A (en) 2015-01-07 2015-01-07 Overheating protection apparatus and method of electronic power meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150002016A KR20160085085A (en) 2015-01-07 2015-01-07 Overheating protection apparatus and method of electronic power meter

Publications (1)

Publication Number Publication Date
KR20160085085A true KR20160085085A (en) 2016-07-15

Family

ID=56505984

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150002016A KR20160085085A (en) 2015-01-07 2015-01-07 Overheating protection apparatus and method of electronic power meter

Country Status (1)

Country Link
KR (1) KR20160085085A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116068245A (en) * 2023-03-07 2023-05-05 江苏盛德电子仪表有限公司 Plug-in type electric energy meter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101206558B1 (en) 2011-05-27 2012-11-29 한국전력공사 Electronic watt hour meter with power user authentication function and authentication management method using the Electronic watt hour meter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101206558B1 (en) 2011-05-27 2012-11-29 한국전력공사 Electronic watt hour meter with power user authentication function and authentication management method using the Electronic watt hour meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116068245A (en) * 2023-03-07 2023-05-05 江苏盛德电子仪表有限公司 Plug-in type electric energy meter
CN116068245B (en) * 2023-03-07 2023-06-09 江苏盛德电子仪表有限公司 Plug-in type electric energy meter

Similar Documents

Publication Publication Date Title
CN103384088B (en) System and method for managing grid power supply
JP5314137B2 (en) Power supply unit having a voltage converter
US9783071B2 (en) Device and method for providing a quantity of energy in said supply device for consumer
KR101241432B1 (en) Multi concent for cutting standby power
US20080140565A1 (en) Intelligent power port
KR101473890B1 (en) Power supply system cutting off standby electric power
EP1919260A1 (en) Electric device and heating cooking device
WO2010067299A2 (en) Electricity meters
US20090200873A1 (en) Induction-type power supply and system
KR20180091170A (en) Power needing apparatus charging system equipped in collective building
AU2017203610A1 (en) Starter apparatus, system, and/or method for a separable-winding motor
KR101201385B1 (en) Power line communication automatic meter reading system using electric saving and safety system
CA2662241C (en) Universal trip unit
US11493544B2 (en) Electronic electricity meter
KR20160085085A (en) Overheating protection apparatus and method of electronic power meter
KR100860858B1 (en) Apparatus for self-diagnosing break line in secondary-side coil for current transformer for electronic watt hour meter using auxiliary relay
KR101182377B1 (en) Consent apparatus cutting off the standby-power and its operating method
JP2011211863A (en) Noncontact power supply equipment
CN103563039B (en) Electronic circuit breaker
KR20110017949A (en) Apparatus and method for saving stand-by electric power
US10664930B2 (en) Device for powering an electrical appliance
KR20120042070A (en) Electronic apparatus
US9263182B2 (en) Control distribution transformer and method of making same
US6453260B1 (en) Apparatus and method for collecting motor test data
US20140211362A1 (en) Device control modules for demand management systems

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E902 Notification of reason for refusal
E601 Decision to refuse application