KR20150110045A - Electric power saving with uninterruptible bypass and power saving switching function - Google Patents

Electric power saving with uninterruptible bypass and power saving switching function Download PDF

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KR20150110045A
KR20150110045A KR1020140033824A KR20140033824A KR20150110045A KR 20150110045 A KR20150110045 A KR 20150110045A KR 1020140033824 A KR1020140033824 A KR 1020140033824A KR 20140033824 A KR20140033824 A KR 20140033824A KR 20150110045 A KR20150110045 A KR 20150110045A
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load
power saving
voltage
power
input power
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KR1020140033824A
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Korean (ko)
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추상우
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추상우
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/70—Regulating power factor; Regulating reactive current or power
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/24—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using bucking or boosting transformers as final control devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

The present invention relates to an electricity saving device and, more specifically, to an electricity saving device having a non-interrupting bypass and a power saving conversion function. The electricity saving device uses a mutual inductance reactor which can obtain a voltage drop effect and a power-factor improvement effect at once. The electricity saving device protects a bypass connecting the input power directly to a load or setting the mutual inductance reactor on sleep mode after determining a demand current of the load side or a state of an input power supply and a load device through an easy electricity-saving conversion.

Description

무정전 바이패스 및 절전전환 기능을 갖는 전기 절전기{omitted}Electric power saving apparatus having uninterruptible bypass and power saving switching function {omitted}

본 발명은 전기절감 장치에 관한 것으로 전압강하 및 역률개선 효과를 동시에 얻을수 있는 상호유도 리액터를 사용하되 부하측의 수요전류량이나 입력전원의 상태를 판단하여 입력전력를 직접 부하에 연결시키던지 혹은 상호유도리엑터를 작동 절전될 수 있도록 하는 바이패스 및 절전전환 이 용이하여 부하기기를 보호 할 수 있는 것을 특징으로 하는 무정전 바이패스 및 절전전환기능을 갖는 전기절감장치에 관한 것이다The present invention relates to an electricity saving device, which uses a mutual induction reactor capable of simultaneously obtaining a voltage drop and a power factor improvement effect, and judges a demand current amount of the load or a state of an input power source to connect the input power directly to the load, To an electric power saving device having an uninterruptible bypass and a power saving switching function, characterized by being capable of protecting the load device by easy bypassing and power saving switching so that the power saving can be performed

상호유도 리액터의 원리는 자가유도 상호작용을 이용한 리액터로서 부하측에 적정전압을 강하시켜 공급함으로써 절전효과를 얻고, 또한 역률을 개선시켜 절전효과를 얻을 뿐만아니라 부하측에 공급되는 전원은 파형(노이즈포함)을 정형시켜주고 급격한 돌입, 써지전압을 평활시켜주는 기능을 갖고 있다.The principle of the mutual induction reactor is a reactor using self-induced interaction. By supplying the appropriate voltage drop to the load side, the power saving effect is obtained and the power factor is improved to obtain the power saving effect. In addition, And has a function to smooth the surge voltage and the surge voltage.

그러나 이러한 상호유도 리액터만으로는 입,출력 전압관계를 부하조건이나 입력전압상태에 따라 적절히 대응시킬수 없기 때문에 일정한 부하조건외에는 폭넓은 부하조건과 전원사정에 맞추어 사용하는데 실용적인 문제가 있을뿐아니라 저전압 및 과전류에 의거 부하기기가 파곤되는 등 안전에 많은 문제가 있었다.However, since such a mutual induction reactor can not adequately correspond the input / output voltage relation according to the load condition or the input voltage condition, there is a practical problem in using it in accordance with the wide load condition and the power condition besides the constant load condition. There was a lot of safety problems such as load equipment being dumped.

즉 모터운전과 같은 부하변동이 심한 경우 정상운전시에는 보통 부하율이 모터 정격의 60∼70%수준이기 때문에 일정 전압을 강하시키고, 역률을 개선시킬 경우 모터의 운전을 정상적으로 유지시키면서 상당한 절전효과를 얻을수 있지만 기동시에나 갑자기 부하율이 높아졌을 경우 충분한 전력공급을 위해 전압을 상승시켜 주거나 전원전압을 100%공급할 필요가 있다. 또한 입력전원이 일정전압이하로 떨어질 경우에 상호유도 리액터를 통한 부하측 전압이 정상적인 운전에 지장을 초래할 만큼 전압강하가 일어나므로 이 경우에도 전압을 상승시켜주거나 전원전압을 100%공급할 필요가 있다.If load fluctuation such as motor operation is severe, normal load ratio is 60 ~ 70% of motor rating in normal operation. Therefore, if the constant voltage is lowered and the power factor is improved, a considerable power saving effect can be obtained while maintaining the normal operation of the motor If the load factor suddenly increases at start-up, it is necessary to increase the voltage or to supply 100% of the power supply voltage for sufficient power supply. Also, when the input power falls below a certain voltage, the voltage drop occurs such that the load side voltage through the mutual induction reactor hinders normal operation. Therefore, it is also necessary to increase the voltage or supply the power source voltage to 100%.

이에 본 발명의 목적은 상술한 문제점을 해결함에 있어서 상호유도 리액터의 작동 특성을 이용한 제어장치를 창출하여 상호유도 리액터의 절전특성을 실용화시키고, 필요에 따라 입력전력를 직접 부하에 연결시키든지 혹은 상호유도리엑터를 작동 절전될 수 있도록 하는 바이패스 및 절전전환 이 용이하여 부하기기를 보호 할 수 있는 관련 제어기술을 제공하기 위한 것이다.It is an object of the present invention to provide a control device using the operating characteristics of the mutual induction reactors in order to solve the above-mentioned problems, to make the power saving characteristics of the mutual induction reactors practical, to connect the input power directly to the load, And to provide an associated control technique capable of protecting the load device by facilitating bypass and power saving switching so that the reactor can be operated.

본 발명의 첨부한 도면에 따라 상세히 설명한다.The present invention will be described in detail with reference to the accompanying drawings.

제 1도에 도시한 상호유도 리액터(4)는 입력전원(1)에 대해 병렬로 1차측 전압코일(2)과 2차측 전류코일(3)이 전자기적으로 결합되어 있고, 2차측 전류코일(3)은 부하(5)회로와 직렬로 연결되어 있다.The mutual induction reactor 4 shown in Fig. 1 is constituted such that a primary side voltage coil 2 and a secondary side current coil 3 are electromagnetically coupled to the input power supply 1 in parallel and a secondary side current coil 3) are connected in series with the load (5) circuit.

한편 상호유도리엑터(4)의 작동을 컨트롤하기 위하여 입력전원(1)에 별도의 바이패스 및 절전전환 스위치(6)를 연결하고,바이패그 및 절전전환 스위치(6)에 릴레이(7,8)를 별령로 연결하고,릴레이(7,8)에 상호유도리엑터(4) 2차측전류부분에 있는 스위치절환수단의 접점단자(9,10)를 연결한다Meanwhile, in order to control the operation of the mutual induction reactor 4, a separate bypass and power saving switch 6 is connected to the input power source 1 and the relays 7, 8 are connected to the biping and power saving switch 6, And the contact terminals 9 and 10 of the switch switching means in the secondary current portion of the mutual induction reactor 4 are connected to the relays 7 and 8

또한 1차측 전압코일(2)의 권선(n1)은 입력전원(1)의 전압(V1)에 의해 결정되고 2차측 전류코일(3)의 권선(n2)은 임의의 적정전압강하량(VZ)에 따라 결정한다.The winding n 1 of the primary side voltage coil 2 is determined by the voltage V 1 of the input power source 1 and the winding n 2 of the secondary side current coil 3 is determined to be any appropriate voltage drop amount V Z ).

이때 출력전압(V2)은 V1-VZ로 결정되며 VZ × I2만큼의 전력량이 상호유도작용으로 1차측 전원(1)으로 궤환되어 절전이 되므로 역률개선 효과를 제공한다.At this time, the output voltage (V 2 ) is determined as V 1 -V Z , and a power amount of V Z × I 2 is fed back to the primary power source (1) by mutual inductive operation to provide power factor improvement effect.

그러나 이와같은 상호유도 리액터(4)는 부하(5)의 정상적인 작동전압범위가 200±15%일 경우 187 ∼ 253V 전압 범위가 허용되지만 예를 들어 2차측 전류코일(3)의 전압(VZ)이 15V이고 입력전원(1) 전압이 190V일 경우 부하(5)에 공급되는 전압은 175V밖에 되지 않는다. 이럴 경우 절전효과 보다는 부하가 정상적인 일을 할수 없게 되므로 이런 경우 최소한 입력전원(1)을 직접 부하측에 연결할수 있는 수단이 필요하다.However, such a mutual inductive reactor 4 permits a voltage range of 187 to 253 V when the normal operating voltage range of the load 5 is 200 ± 15%, but for example, the voltage V z of the secondary side current coil 3, The voltage supplied to the load 5 is only 175V when the input power source 1 is at a voltage of 190V. In this case, the load is not able to perform the normal operation more than the power saving effect. In this case, at least the means for directly connecting the input power source (1) to the load side is required.

한편 부하(5)가 급격한 부하변동이나 과부하로 대전류를 필요로 할 때 2차측전류코일(3)에 흐르는 전류도 크게 증가하게되고 이때 2차측 전류코일전압(VZ)이 크게 증가하므로 부하측 출력전압(V2)은 그 만큼 감소하여 부하(5)측 수요전력을 충족시키지 못하게 되어 상호유도 리액터(4)의 절전기능 발휘에 대한 역기능이 제공된다. 또한 절전기의 이상 또는 부하기기의 보호를 위하여 필요시 입력전원(1)을 직접부하측에 연결하던지 혹은 직접연결된 전원을 상호리엑터(4)를 걸쳐 절전을 이루게 하는데 실용상 문제가 있을 것이다.On the other hand, when the load 5 requires a large current due to a sudden change in load or overload, the current flowing through the secondary current coil 3 also increases greatly. At this time, the secondary current coil voltage V Z greatly increases, (V 2 ) decreases by that much, and the demand power on the side of the load 5 can not be satisfied, so that the inverse function to exert the power saving function of the mutual induction reactor 4 is provided. In addition, there is a practical problem in that, when necessary, the input power supply (1) is directly connected to the load side or the power supply is directly connected to the reactor (4) in order to save power or to protect the load device.

본 발명의 제어구성 개념은 부하(5)에 입력전원(1)이 직접 공급되게 하거나 상호유도 리액터(4)의 2차측 전류코일(3)과 직렬로 연결시키켜 절전응 이루게하도록 입력전원(1)에 별도의 바이패스 및 절전전환 스위치(6)를 연결하고, 바이패그 및 절전전환 스위치(6)에 릴레이(7,8)를 별령로 연결하고, 릴레이(7,8)에 상호유도리엑터(4) 2차측전류부분에 있는 스위치절환수단의 접점단자(9,10)를 구성시켜서 입력전원(1)과 부하조건의 상황에 따라 적절히 대응할수 있는 기능을 부여한 것이다.The control configuration concept of the present invention can be applied to the case where the input power supply 1 is directly supplied to the load 5 or is connected in series with the secondary coil 3 of the mutual induction reactor 4, A separate bypass and power saving switch 6 is connected to the relay 7 and 8 and the relays 7 and 8 are connected to the bipah and the power saving switch 6 in a different manner and the mutual induction reactors 4) The contact terminals 9, 10 of the switch switching means in the secondary side current portion are constituted so as to give functions corresponding to the conditions of the input power source 1 and the load conditions.

입력전원(1)응 부하에 직결되도록 하는 제어방법을 제1도의 본 발명 절전장치 일 구성도에 따라 설명한다.A control method for directly connecting the input power source 1 to the load is described with reference to the configuration diagram of the power saving device of the first embodiment of the present invention.

먼저 입력전압이 현저히 낮다든가 혹은 부하의 전력량리 현저히 높아 절전기사용이 용이하지 않을 경우 즉 바이패스를 하여야 할 경우 바이패그 및 절전전환 스위치(6)를 바이패스상태에 놓으면 릴레이(8: TRY)가 ON되고 부하입력라인(11)은 릴레이(8)의 접점단자(10)에 연결되므로 입력전원(1)과 부하가 직접 연결된다.If the input voltage is too low or the power consumption of the load is so high that it is not easy to use the power saving device, that is, if bypassing is required, if the bi-pag and the power saving switch 6 are placed in the bypass state, the relay 8 (T RY ) And the load input line 11 is connected to the contact terminal 10 of the relay 8, so that the input power supply 1 and the load are directly connected.

또한 모든 사항이 정상적으로 복원되어 절전상태를 유지하고자 할 경우 바이패그 및 절전전환 스위치(6)를 절전상태에 놓으면 릴레이(7: TRY)가 ON되고 부하입력라인(11)은 릴레이(7)의 접점단자(9)에 연결되므로 절전 운전을 할수 있는 것이다.When all the items are normally restored and the power saving state is to be maintained, the relay 7 (T RY ) is turned on and the load input line 11 is connected to the relay 7 It is connected to the contact terminal (9) so that the power saving operation can be performed.

한편, 릴레이(7,8)는 파워반도체스위칭소자를 사용할수도 있다.On the other hand, the relays 7 and 8 may use power semiconductor switching elements.

이와같이 구성된 본 발명은 상호유도 리액터의 절전특성을 실용화 할수 있게 하고 입력전원변동과 부하변동에 따른 전력공급을 원할히 함으로써 부하측의 정상 운전 또는 정상작동에 지장을 전혀 초래하지 않고 입력전원이 바로 부하에 연결하도록하여 부하기기를 보호하여 안전성을 확보할 수 있는 가정용 잔기절감장치를 제공할 수 있는 것이다.The present invention configured as described above makes it possible to put the power saving characteristics of the mutual induction reactor into practical use and make it possible to supply the power according to the variation of the input power source and the variation of the load so that the input power does not directly affect the normal operation or normal operation of the load side It is possible to provide a home-use residual-saving device that can protect the load device and ensure safety.

도 1은 본 발명에 따른 절전장치의 구성도
<도면의 주요부분에 대한 설명>
1 : 입력전원 2 : 1차측 전압코일 3 : 2차측 전류코일 4 : 상호유도 리액터 5 : 부하 6 :바이패스 및 절전전환 스위치 7,8: 릴레이 V1:1차측 전압 VZ: 전류코일 전압 V2 : 출력전압 I1 : 1차측 전류 I2 : 2차측 전류 LP :제어점 VIIL : 1차전압 제어기준전압 VZL : 전류코일전압 제어기준전압 9,10: 스위치절환수단의 접점단자1 is a schematic diagram of a power saving device according to the present invention
DESCRIPTION OF THE EMBODIMENTS
1: Input power supply 2: Primary side voltage coil 3: Secondary side current coil 4: Mutual induction reactor 5: Load 6: Bypass and power saving switch 7,8: Relay V 1 : Primary side voltage V Z : Current coil voltage V 2 : Output voltage I 1 : Primary current I 2 : Secondary current L P : Control point VI IL : Primary voltage control reference voltage V ZL : Current coil voltage control reference voltage 9, 10:

없습.No.

Claims (1)

상호유도 리액터(4)는 입력전원(1)에 대해 병렬로 1차측 전압코일(2)과 2차측 전류코일(3)이 전자기적으로 결합되어 있고, 2차측 전류코일(3)은 부하(5)회로와 직렬로 연결되어 있고,입력전원(1)에 별도의 바이패스 및 절전전환 스위치(6)를 연결하고,바이패TM 및 절전전환 스위치(6)에 릴레이(7,8)를 별렬로 연결하고,릴레이(7,8)에 상호유도리엑터(4) 2차측전류부분에 있는 스위치절환수단의 접점단자(9,10)를 연결하여 부하(5) 입력단자(11)가 입력전원(1)에 접점단자(10)로 직접연결되거나 2차측 전류코일(3)과 접점단자(9)로 직렬연결될수 있는 스위치 절환 수단을 구비하는 것을 특징으로하는 무정전 바이패스 및 절전전환기능을 갖춘 가정용 전기절감장치The mutual inductive reactors 4 are electromagnetically coupled to the primary side voltage coil 2 and the secondary side current coil 3 in parallel to the input power supply 1 and the secondary side current coil 3 is coupled to the load 5 And a separate bypass and power saving switch 6 is connected to the input power supply 1 and the relays 7 and 8 are connected in series to the bypass and the power saving switch 6 And the contact terminals 9 and 10 of the switch switching means in the secondary current portion of the mutual induction reactor 4 are connected to the relays 7 and 8 so that the load 5 input terminal 11 is connected to the input power source 1 And a switch switching means which is directly connected to the contact terminal 10 or can be connected in series to the secondary side current coil 3 and the contact terminal 9, Reduction device
KR1020140033824A 2014-03-24 2014-03-24 Electric power saving with uninterruptible bypass and power saving switching function KR20150110045A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106921168A (en) * 2016-03-07 2017-07-04 浙江涌原新能科技股份有限公司 A kind of battery saving arrangement for large-sized power plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106921168A (en) * 2016-03-07 2017-07-04 浙江涌原新能科技股份有限公司 A kind of battery saving arrangement for large-sized power plant

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