CN107529622A - A kind of three-phase high-voltage electric energy table verifying attachment - Google Patents
A kind of three-phase high-voltage electric energy table verifying attachment Download PDFInfo
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- CN107529622A CN107529622A CN201710822250.7A CN201710822250A CN107529622A CN 107529622 A CN107529622 A CN 107529622A CN 201710822250 A CN201710822250 A CN 201710822250A CN 107529622 A CN107529622 A CN 107529622A
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Abstract
A kind of three-phase high-voltage electric energy table verifying attachment, including main control module, the voltage amplifier and current amplifier being connected with main control module, the booster being connected with voltage amplifier and the current lifting device being connected with current amplifier, the measurement port being connected with booster and current lifting device, the voltage transformer being connected with booster and the current transformer being connected with current lifting device, and the three-phase standard scale being connected with voltage transformer summation current transformer；Also include the high-voltage great-current handover module being connected respectively with the main control module and current lifting device, range switching is carried out to the output current of the current lifting device for the control signal according to main control module.Beneficial effects of the present invention：On the basis of existing high voltage electric energy meter error verifying apparatus, high-voltage great-current handover module is further increased, the test scope of high-voltage electric energy meter is covered using less current range can.
Description
Technical field
The present invention relates to verifying attachment field, and in particular to a kind of three-phase high-voltage electric energy table verifying attachment.
Background technology
At present, the method that the error-detecting of high-voltage electric energy meter typically uses is by the high voltage potential transformer of device（PT）、
High-tension current inductor（CT）Examined respectively according to respective vertification regulation in a low voltage state respectively with low -voltage Watt -hour meter, then by
These verification results calculate global error.This inspection can only examine the accuracy of each part, for high-voltage electric-energy meter
Overall accuracy can not determine.
Authorization Notice No. is that CN202210152U Chinese patent discloses a kind of high voltage electric energy meter error verifying apparatus, energy
Enough carry out the inspection of Integral high-pressure electric power meter.However, the current range switching of the device can only manually switch
Or mechanical system switching, and switching electric current range is unable in measurement process, operational risk is higher, and checkability is also than relatively low.
The content of the invention
Present invention solves the technical problem that it is to provide a kind of three-phase high-voltage electric energy table for the current range that can automatically switch
Verifying attachment.
In order to solve the above problems, present invention employs following technical scheme：
A kind of three-phase high-voltage electric energy table verifying attachment, including main control module, for providing three-phase voltage, current signal；With master control
The voltage amplifier and current amplifier of module connection, for amplifying the voltage, current signal；It is connected with voltage amplifier
Booster and the current lifting device being connected with current amplifier, for the voltage after amplification, current signal boosted, flowed up；With
The measurement port that booster connects with current lifting device, for connecting three-phase high-voltage electric energy table to be measured；The voltage being connected with booster is mutual
Sensor and the current transformer being connected with current lifting device, for changing out the low pressure and low current signal of standard；It is and mutual with voltage
The three-phase standard scale of sensor summation current transformer connection, the reference electric energy meter as high-voltage electric energy meter to be measured；Also include respectively with
The high-voltage great-current handover module that the main control module connects with current lifting device, for according to the control signal of main control module to described
The output current of current lifting device carries out range switching.
Further, the high-voltage great-current handover module include power supply, current range control signal input block,
Circuit occurs for fiber optic switching module and relay control signal；The power supply uses 10kV isolating transformers, passes through
AC220V reference power supply power takings, circuit power supply occurs for the relay control signal；The current range control signal input
Unit connects the fiber optic switching module by optical fiber, and then connects the main control module, for receiving the control of main control module
Signal；The relay control signal occurs circuit and is used to produce control electric current according to the control signal to control the up-flow
The break-make of each relay in device.
Further, circuit, which occurs, for the relay control signal includes decoder driver circuit and and decoder driver circuit
Multiple transistor drive circuits of connection, the decoder driver circuit are connected with the current range control signal input block,
Each transistor drive circuit is connected with each relay in current lifting device respectively.
Further, when the relay of transistor drive circuit connection is high current magnetic latching relay, translating
Monostable flipflop is additionally provided between code drive circuit and the transistor drive circuit.
Further, when the relay of transistor drive circuit connection keeps for multiple high current magnetic being connected in parallel
During relay, an auxiliary reclay is additionally provided between the transistor drive circuit and the relay to increase control work(
Rate.
Further, the voltage transformer uses 0.01 step voltage transformer, and the current transformer uses 0.01S levels
Current transformer.
Beneficial effects of the present invention：On the basis of existing high voltage electric energy meter error verifying apparatus, further increase
High-voltage great-current handover module, the test scope of high-voltage electric energy meter is covered using less current range can.Meanwhile changing
Need not manually change current transformer gear during different phenotype, device can according to test point automatic switchover current range, with
Make test point in the suitable gear of current transformer, it is ensured that measurement accuracy.Cut further, since employing above-mentioned high-voltage great-current
Block is changed the mold, automatic switchover current range is added, reduces the working range of transformer, so that 0.01 in the present apparatus grade electricity
Current transformer can also configure according to common requirement, without the requirement configuration according to S levels, so as to reduce cost.
Brief description of the drawings
Fig. 1 is the module composition connection block diagram of the three-phase high-voltage electric energy table verifying attachment embodiment of the present invention.
Fig. 2 is the composition and connection relationship diagram of Fig. 1 embodiment mesohigh high current handover modules.
Embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are simply further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
The invention provides a kind of three-phase high-voltage electric energy table verifying attachment, is closed as shown in Figure 1 for its comprising modules and connection
It is block diagram, it includes main control module, voltage amplifier, current amplifier, booster, current lifting device, voltage transformer, Current Mutual Inductance
Device, three-phase standard scale and the three-phase high-voltage electric energy table to be measured for being connected to measurement port；Also include high-voltage great-current handover module.
Wherein, main control module is used to provide three-phase voltage, current signal, and to high-voltage great-current handover module and three-phase
Standard scale sends control signal.Voltage amplifier connects main control module with current amplifier, sends for amplifying main control module
Voltage, current signal.Voltage, current signal after amplification boosted through 10kV boosters and 10kV high pressure current lifting devices respectively,
It is sent to after up-flow at the three-phase high-voltage electric energy table to be measured connected at measurement port.On the other hand, connect respectively 10kV boosters,
The 0.01 step voltage transformer and 0.01 grade of current transformer of 10kV high pressure current lifting devices change out the low pressure and low current letter of standard
Number, it is sent into 0.02 grade of three-phase standard scale, the measurement reference as high-voltage electric energy meter to be measured.
In order to avoid the operational risk of manual switching current range, while improve the intelligence degree of measurement apparatus, this hair
Bright three-phase high-voltage electric energy table verifying attachment further increases high-voltage great-current handover module, and it can be according to main control module
Control signal carries out range switching to the output current of current lifting device.
Specifically, as shown in Fig. 2 the high-voltage great-current handover module in the present invention is program control including power supply, the magnitude of current
Circuit occurs for signal input unit processed and relay control signal.Wherein, power supply uses 10kV isolating transformers, passes through
AC220V reference power supply power takings, circuit power supply occurs for relay control signal；Current range control signal input block passes through
Optical fiber connects fiber optic switching module, and then connects main control module, to receive the control signal of main control module；Control afterwards
The control signal that signal generating circuit receives according to current range control signal input block produces control electric current, to control up-flow
The break-make of each relay in device, so as to complete the switching of the range of current lifting device output current.
With continued reference to Fig. 2, circuit, which occurs, for the relay control signal in the present invention includes decoder driver circuit and with translating
Multiple transistor drive circuits of code drive circuit connection, decoder driver circuit connect with current range control signal input block
Connect, each transistor drive circuit is connected with each relay in current lifting device.
In one embodiment of the invention, current lifting device includes 11 relay K1-K11, its repeat circuit K1, K2 be low current after
Electrical equipment, K3-K11 is high current magnetic latching relay, and K4 and K5 are connected in parallel, and K6-K11 is connected in parallel.It is big in order to drive
Current magnetic holding relay K3, K4 and K5, K6-K11, decoder driver circuit and with high current magnetic latching relay K3, K4 and
Monostable flipflop is further respectively had between the transistor drive circuit of K5, K6-K11 connection, relay is kept with drive control magnetic
The break-make of device.Due to needing to control 6 power magnetic force keeping relay simultaneously, the transistor drive circuit being connected with K6-K11 is defeated
Go out end and be further provided with an auxiliary reclay to increase control power, maximum control power 30W.
In one embodiment of the invention, voltage transformer uses 0.01 step voltage transformer, and current transformer uses 0.01 grade
Current transformer.
Due to having used above-mentioned high-voltage great-current handover module, automatic switchover current range is added, reduces transformer
Working range, current transformer can also use 0.01 common current transformer, without according to S level current transformers will
Configuration is asked, so as to reduce cost.
The explanation of above example is only intended to help the method and its core concept for understanding the present invention.It should be pointed out that pair
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
Claims (6)
1. a kind of three-phase high-voltage electric energy table verifying attachment, including main control module, for providing three-phase voltage, current signal；With master
The voltage amplifier and current amplifier of module connection are controlled, for amplifying the voltage, current signal；It is connected with voltage amplifier
Booster and the current lifting device that is connected with current amplifier, for the voltage after amplification, current signal boosted, flowed up；
The measurement port being connected with booster and current lifting device, for connecting three-phase high-voltage electric energy table to be measured；The voltage being connected with booster
Transformer and the current transformer being connected with current lifting device, for changing out the low pressure and low current signal of standard；And and voltage
The three-phase standard scale of transformer summation current transformer connection, the reference electric energy meter as high-voltage electric energy meter to be measured；It is characterized in that：
Also include the high-voltage great-current handover module being connected respectively with the main control module and current lifting device, for the control according to main control module
Signal processed carries out range switching to the output current of the current lifting device.
2. three-phase high-voltage electric energy table verifying attachment as claimed in claim 1, it is characterised in that：The high-voltage great-current switches mould
Block includes power supply, current range control signal input block, fiber optic switching module and relay control signal and circuit occurs；
The power supply uses 10kV isolating transformers, by AC220V reference power supply power takings, is sent out for the relay control signal
Raw circuit power supply；The current range control signal input block connects the fiber optic switching module by optical fiber, and then connects
The main control module, for receiving the control signal of main control module；The relay control signal occurs circuit and is used for according to institute
State control signal and produce control electric current to control the break-make of each relay in the current lifting device.
3. three-phase high-voltage electric energy table verifying attachment as claimed in claim 2, it is characterised in that：The relay control signal hair
Raw circuit includes decoder driver circuit and the multiple transistor drive circuits being connected with decoder driver circuit, the Coding and driving
Circuit is connected with the current range control signal input block, each transistor drive circuit respectively with it is each in current lifting device
Relay connects.
4. three-phase high-voltage electric energy table verifying attachment as claimed in claim 3, it is characterised in that：When the transistor drive circuit
When the relay of connection is high current magnetic latching relay, also set between decoder driver circuit and the transistor drive circuit
There is monostable flipflop.
5. three-phase high-voltage electric energy table verifying attachment as claimed in claim 3, it is characterised in that：When the transistor drive circuit
During the high current magnetic latching relay that the relay of connection is connected in parallel to be multiple, in the transistor drive circuit and relay
Between be additionally provided with an auxiliary reclay to increase control power.
6. the three-phase high-voltage electric energy table verifying attachment as described in claim 1-5 any one, it is characterised in that：The voltage is mutual
Sensor uses 0.01 step voltage transformer, and the current transformer uses 0.01 grade of current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822250.7A CN107529622A (en) | 2017-09-13 | 2017-09-13 | A kind of three-phase high-voltage electric energy table verifying attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822250.7A CN107529622A (en) | 2017-09-13 | 2017-09-13 | A kind of three-phase high-voltage electric energy table verifying attachment |
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| CN107529622A true CN107529622A (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710822250.7A Pending CN107529622A (en) | 2017-09-13 | 2017-09-13 | A kind of three-phase high-voltage electric energy table verifying attachment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531153A (en) * | 2019-09-26 | 2019-12-03 | 浙江涵普电力科技有限公司 | A kind of high accuracy three-phase standard electric energy meter with harmonic measure |
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| CN2685896Y (en) * | 2003-11-06 | 2005-03-16 | 高其能 | High precision electronic current lift for electric energy meter checking equipment |
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2017
- 2017-09-13 CN CN201710822250.7A patent/CN107529622A/en active Pending
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| CN2685896Y (en) * | 2003-11-06 | 2005-03-16 | 高其能 | High precision electronic current lift for electric energy meter checking equipment |
| WO2012142736A1 (en) * | 2011-04-22 | 2012-10-26 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN202210152U (en) * | 2011-09-28 | 2012-05-02 | 海盐盛迪电子科技有限公司 | High voltage electric energy meter error verifying apparatus |
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| CN203275637U (en) * | 2013-04-16 | 2013-11-06 | 海盐新跃电器有限公司 | Single-phase inspection device simultaneously used on site and indoors |
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| CN106443561A (en) * | 2016-09-23 | 2017-02-22 | 国网江西省电力公司电力科学研究院 | Overall inspection method and apparatus for electric energy metering devices of 35kV or below |
| CN207396712U (en) * | 2017-09-13 | 2018-05-22 | 浙江盛迪科技股份有限公司 | A kind of three-phase high-voltage electric energy table verifying attachment |
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| 杨勇波等: "6kV～35kV电能计量装置整体检定系统的研制", 《电测与仪表》, vol. 53, no. 22, pages 123 - 128 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110531153A (en) * | 2019-09-26 | 2019-12-03 | 浙江涵普电力科技有限公司 | A kind of high accuracy three-phase standard electric energy meter with harmonic measure |
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