CN2229082Y - Voltage loss timing meter for kilowatt hour meter - Google Patents

Voltage loss timing meter for kilowatt hour meter Download PDF

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Publication number
CN2229082Y
CN2229082Y CN 95214433 CN95214433U CN2229082Y CN 2229082 Y CN2229082 Y CN 2229082Y CN 95214433 CN95214433 CN 95214433 CN 95214433 U CN95214433 U CN 95214433U CN 2229082 Y CN2229082 Y CN 2229082Y
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circuit
voltage
meter
loss
phase
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CN 95214433
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汤赣生
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汤赣生
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Abstract

The utility model refers to a voltage loss timing meter for a kilowatt hour meter. The utility model is composed of a voltage monitoring circuit L1, a current monitoring and load latching timer working voltage circuit L2, a signal and timer working circuit L3. Since the utility model makes the voltage of an I / V convertor of load current serve as a working voltage and a signal indicating working voltage, the utility model overcomes the defects of adopting dry batteries to make electricity in the prior art, and the utility model can exactly record the fault time of voltage loss of a kilowatt hour meter. With the advantages of rational circuit design, compact conformation, low cost, and exact and reliable timing, the utility model is widely suitable for a voltage system of 380V.

Description

电能表失压积时仪 Loss of pressure energy meter planimeter

本实用新型涉及380伏低压系统电能表的失压积时装置。 When the apparatus of the present invention hematocrit failure relates to a low pressure system 380 volt power meter.

产生电能表旋转力矩的基本要素是电压、电流和COSΦ角。 The basic elements of the rotational torque generating electric power meter is a voltage, current, and COSΦ angle. 运行中的低压电能表如出现电压断相故障,会影响电能表的旋转力矩,致使电能表产生严重的电能计量误差。 Low pressure operation such as a voltage meter off phase fault, will affect the rotational torque meter, causing serious energy meter measurement error. 由于Φ角是电能表电压和电流的夹角,因此,当电流等于零时,电流表的旋转矩也等于零,此时尽管A、B、C三相电压任意失压,都不会产生电能表的计量误差,作为反映电能表电压故障的失压积时仪,此时记录失压故障时间是毫无意义的。 Since the angle Φ is the angle between the voltage and current of the power meter, and therefore, when the current is equal to zero, the rotational torque meter is also equal to zero, although this case A, B, C phase voltage of any pressure loss, will not produce power measurement table error voltage failure as a reflection meter instrument when hematocrit loss, loss of pressure at this time the recording time to failure is meaningless. 相反,当A、B、C三相有负电流时,电能表将会随失压故障性质而严重影响电能的正确计量。 Conversely, when A, B, C-phase current is negative, with the pressure meter will seriously affect the nature of the failure and the loss of the correct power measurement. 现有技术中的电能表失压计时装置是用干电池作为计时器的工作电压,其特点是:当干电池消耗殆尽时,将失去失压计时功能。 The prior art timing device loss of pressure energy meter is battery operating voltage as a timer, which is characterized by: when the battery depletion, loss of pressure loss of the timing function.

本实用新型的目的在于克服现有技术的缺陷,根据上述技术原理和技术要求,提供一种具有负载监察及其闭锁的失压积时仪,即在有负载电流的情况下,A、B、C三相电压任意失压,即可根据失压故障相,记录失压相的时间;在无负载电流的情况下,尽管有失压故障,也不记录失压故障相的时间,从而为结算和追补电能电量提供可靠的技术参数和时间参数。 The object of the present invention is to overcome the drawbacks of the prior art, based on the technical principle and technical requirements, and to provide a load monitoring device when the latch failure hematocrit, i.e., in the case of load current, A, B, C phase voltage of any loss of pressure, to the phase, the recording time of the pressure loss in accordance with the loss of pressure failure; under no load current situation, although the pressure beneath the fault, the fault is not recorded with the pressure loss of time, so as billing retroactive power consumption and provide reliable technical parameters and time parameters.

本实用新型由电压监察电路L1、电流监察及负载闭锁和计时器工作电压电路L2、信号和计时器工作电路L3组成。 Present invention by the voltage monitoring circuit L1, and the current monitoring and load lock timer circuit operating voltage L2, L3 signal, and a timer circuit composed of work. 其特征在于电路L2中,A、B、C三相均接有电流互感器,并在其二次回路中均串接一I/V变换器,以获取计时器工作电压和信号指示的工作电源。 Wherein the circuit L2, A, B, C are connected to three-phase current transformers, the secondary circuit and which are connected in series one I / V converter, the operating voltage for the timer and a signal indicative of the power supply . 电压监察电路L1则由桥式整流电路及其附属阻容元件组成。 A voltage monitoring circuit L1 by a bridge rectifier circuit RC components and its subsidiaries. 信号和计时器工作电路则由继电器、计时器和发光二极管组成。 Signal operating circuit and by a timer relays, timers, and light-emitting diodes.

本实用新型具有电压监察和负载电流监察功能,并将负载电流的I/V变换器的电压作为计时器的工作电压和信号指示的工作电源,从而可准确记录电能表失压故障的时间,本实用新型还具有电路设计合理、结构紧凑、成本低、积时准确可靠的优点,广泛适用于380V电压系统的电能表失压积时。 The present invention has a voltage and load current monitoring function of monitoring, and the load current I / V converter as a voltage of the power supply timer signal indicative of the operating voltage and thereby can accurately record the time of loss of pressure energy meter failure, the present invention further includes a circuit design, compact structure, low cost, accurate and reliable when the product of advantages when applied to a wide hematocrit 380V voltage meter system failure.

图1:为本实用新型原理方框图。 Figure 1: a schematic block diagram of the present novel utility.

图2:为本实用新型电压监察电路L1的电路图。 Figure 2: a voltage monitoring circuit of the present invention L1 is a circuit diagram.

图3:为本实用新型电流监察及负载闭锁和计时器工作电压电路L2的电路图。 Figure 3: a circuit diagram of new and current monitoring and load lock timer circuit operating voltage L2 of the present invention.

图4:为本实用新型信号和计时器工作电路L3的电路图。 Figure 4: a circuit diagram of the new signal and the timer operation of the circuit of L3 present invention.

以下对照附图结合实施例对本实用新型进行进一步详细说明。 The following reference to the drawings in conjunction with embodiments of the present invention will be described in further detail.

本实用新型的电压监察电路L1由继电器J1、J2、J3,整流二极管D1、D2、D3、D4、D5、D6,D7、D8、D9、D10、D11、D12,电阻器R1、R2、R3、R4、R5、R6,电解电容C1、C2、C3组成,在380V三相四线供电网络中接成Y/O型接线方式,即VAO、VBO、VCO、D1、D2、D3、D4为VAO相电压整流桥,继电器J1、电阻R1接入VAO相的整流电路中,其中电解电容C1经常闭触点J1-1与负电源并接,R2与J1-3常开触点串接,D5、D6、D7、D8为VBO相电压整流桥,继电器J2,电阻R3接入VBO相的整流电路中,其中电解电容C2经常闭触点J2-1与负电源并接,R4与常开触点J2-3串接,D9、D10、D11、D12为VCO相电压整流桥,继电器J3、电阻器R5接入VCO相的整流电路中,其中电解电容C3经常闭触点J3-1与负电源并接,R6与J3-3常开触点串接。 The present invention is a voltage monitoring circuit L1 a relay J1, J2, J3, rectifying diodes D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, resistors R1, R2, R3, R4, R5, R6, electrolytic capacitors C1, C2, C3 composed in three-phase four-wire power supply 380V network connected to the Y / O type wiring, i.e. VAO, VBO, VCO, D1, D2, D3, D4 relative to VAO a voltage rectifier bridge rectifier circuit, a relay J1, resistors R1 VAO access phase, wherein the electrolytic capacitor C1 is often closed contacts J1-1 connected to the negative power supply and, R2 connected in series with normally open contacts J1-3, D5, D6 , D7, D8 of rectifier circuit voltage VBO-phase rectifier bridge, relay J2, resistor R3 VBO access phase, wherein the electrolytic capacitor C2 is often closed contacts J2-1 connected to the negative power supply and, R4 and normally open contacts J2- 3 series, D9, D10, D11, D12 for the VCO phase voltage rectifier bridge, relay J3, access resistor R5 VCO phase rectifier circuit, in which the electrolytic capacitor C3 is often closed contacts J3-1 and the negative power supply connection, R6 connected in series with normally open contacts J3-3. 正常时,继电器J1、J2、J3在各处的回路中,在电阻器和电解电容器的作用下,处于工作状态,常开触点J1-4、J2-4、J3-4闭合分别接通A相I/V变换器K1,B相I/V变换器K2,C相I/V变换器K3的工作电源,在L3信号和计时器电路中,分别发出绿灯负载指示信号。 Normal, relay J1, J2, J3 throughout the circuit, under the action of the electrolytic capacitor and a resistor, in operation, the normally open contacts J1-4, J2-4, J3-4, respectively closed ON A phase I / V converter K1, B phase I / V converter K2, C K3 phase I V converter of the power supply, the timer circuit and the signal L3, the signal indicative of the load emit green light /. 当电能表VAO电压回路继相时,J1断电器失电,其常闭触点J1-2返回闭合,发出A相红灯告警信号并启动A相计时器S1工作,记录A相失压时间;当电能表VBO相电压回路断相时,J2继电器失电,其常闭触点J2-2返回闭合,发出B相红灯告警信号并启动B相计时器S2工作,记录B相失压时间;当电能表VCO相电压回路继相时,J3继电器失电,其常闭触点J3-2返回闭合,发出C相红灯告警信号并启动C相计时器工作,记录C相失压时间。 When the meter relay circuit phase voltage VAO, Jl breaker energized, normally closed contact which is closed to return J1-2, issued an A-phase signal and the red alarm timer start-up operation Sl phase A, phase A loss of pressure recording time; when the phase-phase voltage VBO meter circuit, J2 relay energized, the normally closed contact is closed J2-2 return, the red alert signal issued B phase B phase and start a timer working S2, the recording time B loss of pressure; when the VCO phase voltage meter relay circuit phase, J3 relay is energized, the normally closed contact is closed J3-2 return, issued C phase C the red alarm signal and starts a timer working phase, C phase loss of pressure recorded time. 本电路具有分相失压计时的特点,因此,当电能表A、B、C任意单相、任意二相或三相失压时,均能按失压故障相,记录该相失压时间,从而准确的起到了电压监察回路的作用。 This circuit has a voltage phase loss timing characteristics, therefore, when the power meter A, B, C any single-phase, two-phase or three-phase any loss of pressure, loss of pressure can press the faulted phase, the recording time of the loss of pressure, thus played a role in accurate voltage monitor circuit.

电流监察及负载闭锁和计时器工作电压电路L2由A相电流I/V变换器K1,B相电流I/V变换器K2,C相电流I/V变换器K3,桥堆D11、D12、D13,稳压管D14、D15、D16,电解电容C11、C12、C13所组成。 Current monitoring and load lock timer circuit operating voltage and L2 from the A-phase current I / V converter K1, B phase current I / V converter K2, C-phase current I / V converter K3, bridge rectifiers D11, D12, D13 , regulator D14, D15, D16, electrolytic capacitors C11, C12, C13 composed. 变换器K1串接在A相电流互感器CT1的二次电流回路中,当A相有负载时,A相电流互感器的二次电流流过变换器K1的原边线圈,K1的付边线圈按负载电流的大小,得到一定比例的交流电压,然后经桥堆D11整流为直流电压,稳压管D14和电解电容C11并接在此电路中,输出稳定的直流电压,当A相无负载时,或者负载电流小于一定值时,K1的付边无感应电压,此时尽管A相电压回路断相失压,但由于K1付边无感应电压,计时器S1无工作电压不能计时和发出信号,因而起到了负载闭锁的作用;变换器K2串接在B相电流互感器CT2的二次电流回路中,当B相有负载时,B相电流互感器的二次电流流过变换器K2的原边线圈,K2的付边线圈按负载电流的大小,得到一定比例的交流电压,然后经桥堆D12整流为直流电压,稳压管D15和电解电容C12并接在此电路中,输出稳定的直流电压,当B A converter K1 connected in series with a current transformer CT1 secondary current circuit, when a load phase A, the phase A current transformer secondary current flowing through the transformer primary coil K1, the secondary side coil of K1 according to the size of the load current to obtain a certain percentage of the AC voltage, and then the stack through D11 bridge rectified DC voltage, the zener diode D14 and the electrolytic capacitor C11 is connected in parallel to this circuit, the output stable DC voltage, when no load phase a or the load current is less than a certain value, K1 is no induced voltage secondary side, although this point a phase voltage circuit breaking loss of pressure, but because no induced voltage secondary side K1, S1 timer is not timing and no operating voltage signals, therefore plays a role in the load lock; K2 connected in series with B phase converter current transformer secondary current circuit CT2, a load when the B-phase, B-phase current transformer secondary current flowing through the primary of transformer K2 coil, K2 according to the size of the secondary side coil of the load current to obtain a certain percentage of the AC voltage, and then the stack through D12 bridge rectified DC voltage, the zener diode D15 and the electrolytic capacitor C12 is connected in this circuit, the output of a stable DC voltage, when the B 无负载时,或者负载电流小于一定值时,K2的付边无感应电压,此时尽管B相电压回路断相失压,但由于K2付边无感应电压,计时器S2无工作电压不能计时和发出信号,因而起到了负载闭锁的作用,变换器K3串接在C相电流互感器CT3的二次电流的回路中,当C相有负载时C相电流互感器的二次电流流过变换器K3的原边线圈,K3的付边线圈按负载电流的大小,得到一定比例的交流电压,然后经桥堆D13整流为直流电压,稳压管D16和电解电容C13并接在此电路中,输出稳定的直流电压,当C相无负载时,或者负载电流小于一定值时,K3的付边无感应电压,此时,尽管C相电压回路断相失压,但由于K3的付边无感应电压,计时器S3工作电压不能计时和发出信号,因而起到负载闭锁的作用。 When no load, or the load current is less than a certain value, K2 is no induced voltage secondary side, although this time the B-phase voltage circuit breaking loss of pressure, but because no induced voltage secondary side K2, S2 no timer is not timing, and the operating voltage signals, and thus play a role in the load lock, the inverter circuit K3 in series with the secondary current of the C phase current transformer CT3, a C phase when a load current of the secondary C-phase current flowing through the converter transformer K3 is the primary coil, secondary side coil K3 according to the size of the load current to obtain a certain percentage of the AC voltage, and then the stack through D13 bridge rectified DC voltage, the zener diode D16 and the electrolytic capacitor C13 is connected in parallel to this circuit, the output stable DC voltage, when the C-phase load, or the load current is less than a certain value, the secondary side without K3 induced voltage at this time, although the C phase voltage circuit breaking loss of pressure, but without paying the induced voltage side of K3 timer S3 and the operating voltage is not the timing signals, and thus play a role in the load-lock. 综上所述,串接在本电路的K1、K2、K3的I/V变换器,感应出来的电压均分别控制着A、B、C三相的S1、S2、S3计时器,当有负载时,变换器K1、K2、K3可以提供S1、S2、S3计时器工作电压和信号电源,当无负载时,则不能供给计时器S1、S2、S3工作电压和信号电源,这样就起到了负载闭锁的作用,以及无须由干电池作计时器的工作电压和信号电源。 In summary, the present circuit is connected in series K1, K2, K3 of the I / V converter, voltages are respectively induced in the control A, B, C of the three-phase S1, S2, S3 timer, when a load when the inverter K1, K2, K3 may be provided S1, S2, S3 timer signal supply voltage and, when no load, the timer can not be supplied S1, S2, S3 and the operating voltage supply signal, so that played a load locking action, and the working voltage and the signal from the battery without power for a timer.

信号和计时器工作电路L3由发光二极管D′1、D′2、D′3,D′4、D′5、D′6,计时器S1、S2、S3和常开触点J1-4、J2-4、J3-4,常闭触点J1-2、J2-2、J3-2组成,D′1是A相电压失压信号灯,D′2是A相负载指示信号灯,S1是A相失压计时器,当A相电压正常,有负载电流时J1-4闭合,D′2信号灯亮,当A相有负载失压时,J1-2闭合,D′1信号灯亮,计时器S1启动计时,记录A相失压时间;D′3是B相电压失压信号灯,D′4是B相负载指示信号灯,S2是B相失压计时器,当B相电压正常,有负载电流时J2-4闭合,D′4信号灯亮,当B相有负载失压时,J2-2闭合,D′3显示灯亮,计时器S2启动计时,记录B相失压时间;D′5是C相电压失压信号灯,D′6是C相负载指示信号灯,S3是C相失压计时器,当C相电压正常,有负载电流时,J3-4闭合,D′6信号灯亮,当C相有负载失压时,J3-2闭合,D′5信号灯亮, The timer signal operating circuit and L3 emitting diode D'1, D'2, D'3, D'4, D'5, D'6, timer S1, S2, S3, and the normally open contacts J1-4, J2-4, J3-4, normally closed contacts J1-2, J2-2, J3-2 composition, D'1 is the A phase voltage loss of pressure lights, D'2 is an A-phase load indication lights, S1 is phase A loss of pressure timer, when the A-phase voltage is normal, J1-4 is closed load current, D'2 signal light, when a load phase A loss of pressure, J1-2 closed, D'1 signal light, a timer is started S1 timing, the recording time A loss of pressure; D'3 is a B-phase signal lamp voltage loss of pressure, D'4 is a B-phase load indication lights, S2 is a B-phase voltage loss timer, when the B-phase voltage is normal, when the load current J2 -4 closed, D'4 signal light, the B-phase when a load loss of pressure, J2-2 closed, D'3 display lights, the timer start time S2, the recording time B loss of pressure; D'5 is C phase voltage pressure loss lights, D'6 is C phase load indication lights, S3 is the C phase voltage loss timer, when the C-phase voltage is normal, when the load current, J3-4 is closed, D'6 signal light, when a load phase C when the loss of pressure, J3-2 closed, D'5 bright lights, 时器S3启动计时,记录C相失压时间。 When S3 is start time, recording time C loss of pressure.

Claims (3)

1.一种电能表失压积时仪,其特征在于:由电压监察电路(L1)、电流监察及负载闭锁和计时器工作电压电路(L2)、信号和计时器工作电路(L3)组成,电流监察及负载闭锁和计时器工作电压电路(L2)中,A相电流互感器(CT1)、B相电流互感器(CT2)、C相电流互感器(CT3)的二次回路中分别串接有I/V变换器(K1、K2、K3),且由变换器(K1、K2、K3)的电压作为计时器工作电压和信号指示工作电源。 An energy meter when the meter hematocrit loss, characterized in that: a voltage monitoring circuit (L1), and a current monitoring and load lock timer circuit operating voltage (L2 of), the signal operating circuit and a timer (L3) composition, current monitoring and load lock operating voltage and a timer circuit (L2), a is the phase current transformer (CT1), B-phase current transformer (CT2), C-phase current transformer (the CT3), respectively connected in series in the secondary circuit there I / V converter (K1, K2, K3), and a voltage converter (K1, K2, K3) as a timer signal indicative of the operating voltage and operating power.
2.根据权利要求1所述的电能表失压积时仪,其特征在于:电能监察电路(L1)中的VAO回路的电解电容(C1)、VBO回路的电解电容(C2)、VCO回路中的电解电容(C3)分别经继电器(J1、J2、J3)的常闭触点(J1-1、J2-1、J3-1)至电源负极。 The meter of claim 1 when the instrument hematocrit loss claim, wherein: the electrolytic capacitor power monitoring circuit (L1) of the VAO circuit (a C1), VBO electrolytic capacitor circuit (C2), VCO circuit the electrolytic capacitor (C3) respectively to the negative power source through the relay (J1, J2, J3) of the normally closed contact (J1-1, J2-1, J3-1).
3.根据权利要求1或2所述的电能表失压积时仪,其特征在于:电压监察电路(L1)中的电阻(R2)、VBO回路的电阻(R4)、VCO回路的电阻(R6)分别与继电器(J1、J2、J3)的常开触点(J1-3、J2-3、J3-3)串接。 The meter of claim 12 or loss of pressure when the volume meter claim, wherein: a voltage monitoring circuit (L1) of the resistor (R2), VBO circuit resistor (R4), VCO circuit resistor (R6 ) are connected in series with the relay (J1, J2, J3) of the normally open contact (J1-3, J2-3, J3-3).
CN 95214433 1995-06-02 1995-06-02 Voltage loss timing meter for kilowatt hour meter CN2229082Y (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101739734B (en) * 2008-11-14 2012-02-22 温县供电有限责任公司 No-load time integrator of agricultural irrigation distribution transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101739734B (en) * 2008-11-14 2012-02-22 温县供电有限责任公司 No-load time integrator of agricultural irrigation distribution transformer

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