CN103941082B - High-voltage electric energy direct metering device and method with double-channel data redundancy - Google Patents
High-voltage electric energy direct metering device and method with double-channel data redundancy Download PDFInfo
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- CN103941082B CN103941082B CN201410140530.6A CN201410140530A CN103941082B CN 103941082 B CN103941082 B CN 103941082B CN 201410140530 A CN201410140530 A CN 201410140530A CN 103941082 B CN103941082 B CN 103941082B
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Abstract
The invention discloses a high-voltage electric energy direct metering device with double-channel data redundancy. The high-voltage electric energy direct metering device with double-channel data redundancy comprises two current signal sensors, two metal shielding boxes and two voltage signal sensors. A high-voltage metering device which is composed of a working power supply, an electric energy metering unit and a communication module is arranged in each metal shielding box. The current signal sensors and the voltage signal sensors are both connected with the two electric energy metering units. The two electric energy metering units are connected through an optical fiber. Each working power supply is connected with the corresponding voltage signal sensor and the corresponding electric energy metering unit. Each electric energy metering unit transmits data to a display terminal through a communication module. The invention further discloses a high-voltage electric energy direct metering method with double-channel data redundancy. The high-voltage electric energy direct metering device with double-channel data redundancy is smaller in size, smaller in occupied area and simpler in structure; in addition, more materials are saved, the production cost of a high-voltage body is reduced, communication is more reliable and safer, and data are stored repeatedly, so that data are not prone to being lost.
Description
Technical field
The invention belongs to Electric Energy Metering Technology field is and in particular to a kind of high pressure three-phase electric energy metering device and method, special
It is not related to a kind of high potential metering and the electric power meter with communication redundancy feature between data redundancy and high-low pressure.
Background technology
Existing high voltage electric energy gauging method has many kinds now, is roughly divided into following three classes, but all there are some and ask
Topic：
High voltage, high current are reduced with traditional electromagnetic type electric current, voltage transformer and become general low by the first kind respectively
Voltage, small current（For example：100 volts of rated voltage, rated current 5 is pacified or 1A）, then carry out electric energy metrical with low -voltage Watt -hour meter.
The advantage of this technology is：It is a kind of classical technology, and product quality is stable.Its shortcoming mainly has：Expend a large amount of materials
Material particularly non-ferrous metal, cannot overall inspection error, low, the low pressure meter that is susceptible to ferromagnetic resonance accident, the accuracy of measuring
Same current transformer, voltage transformer separate, and are susceptible to wiring error, cause electricity incorrect posting, error of omission.Particularly it is not easy to keep away
Exempt from the generation of stealing activity.
Equations of The Second Kind, substitutes traditional electromagnetic type transformer, same low-voltage electric energy with unconventional voltage and current signal transducer
Table constitutes electric power meter together.Many present high-voltage electric energy meters are just made using this principle.This class technology
Feature is that the signals collecting of electric energy metrical, data processing and communication all complete in low-pressure side.Its advantage be electric current,
Voltage signal sensor miniaturization, and sensor is integrated with low -voltage Watt -hour meter, this with material-saving and can reduce volume.It
The disadvantage is that, this technology is the same with traditional know-why in itself.Technology does not have the progress of essence, and number
According to easy to lose.
The third, non-traditional electric current, voltage signal sensor are placed in hot end, obtain A, B, C three-phase in high-pressure side
Voltage and current signal.The electric energy metrical unit being become with electronics configuration using computer chip, respectively in hot end
Signal processing and calculating are carried out to each phase current, voltage, obtains the electric flux of every phase.Finally, to three-phase, respective electric flux enters
Row is total plus obtains three-phase electric energy metering result.Being mainly characterized by of this technology：The signals collecting of electric energy metrical, data processing and
Communication all completes in high-pressure side.It significantly can save metal material it is easy to realize the overall verification of integration, obtains whole
Body error.Its shortcoming is：Three-phase electric energy metering is to be conducted by the electric energy metrical individually carrying out in A, C phase to do total adding to B phase
Complete.This will lead to the increase of alternate optical-fiber communication channel.In addition to increasing manufacturing cost, this structure also can increase
Add high pressure the fault rate of electric energy meter.
More than measured according to so-called " genuine standard ".To central point isolated neutral system, " two tables can also be utilized
Method " completes three-phase electric energy metering.Being mainly characterized by of this technology：Less with a current transformer, voltage transformer and metering
Unit, more saves metal material than genuine standard.
Number of patent application is 200810002310.1《High voltage electric energy direct metered system and method》Current acquisition module
It is located at A, C phase, and A, C same potential respectively, metering units are divided into two parts, be located at A, C phase respectively, then carry out in B phase comprehensive
Close cumulative, and with low voltage terminal communication.The program is using single channel model and data only stores once, once there is height
Communicating interrupt data between pressure just transmits to get off.
Content of the invention
The invention aims to solving above-mentioned technical problem, provide a kind of high voltage electric energy of double-channel data redundancy
Directly metering device.Respectively in A, C biphase measurement voltage, electric current and split-phase electric energy, then data is passed to other side, data is passed through
Process total plus after obtaining closing phase electric energy, biphase respectively to low-pressure end transmission data it is ensured that dual-channel transmission, metering and data processing
All carry out in high potential.Thus avoiding the problem and shortage that existing electric energy gauging method exists.
The present invention is realized in：
A kind of high voltage electric energy direct metering device of double-channel data redundancy, including two current signal sensor, two
Individual metal shielding box and two voltage signal sensor, are by working power, electric energy metrical unit and communication in metal shielding box
The high-voltage metering device of module composition, current signal sensor and voltage signal sensor are all connected with electric energy metrical unit,
Connected by optical fiber between two electric energy metrical units；Working power is connected with voltage signal sensor and electric energy metrical unit respectively
Connect；Electric energy metrical unit transfers data to display terminal by communication module.
Further scheme is：The direct metering device of high voltage electric energy of described double-channel data redundancy is arranged on one
Inside individual insulation crust, and inside insulation crust, it is filled with insulant.
Further scheme is：Described communication module is passed through optical fiber, wireless, infrared or GPRS or a combination thereof and is transmitted number
According to display terminal.
Further scheme is：Described voltage signal sensor uses electromagnetic potential transformer, or uses non-ferric
Magnetic-type sensor.
Further scheme is：Described non-ferric magnetic-type sensor is capacitance sensor or electric resistance sensor or capacitance-resistance passes
Sensor.
Further object is that providing a kind of direct metering method of high voltage electric energy of double-channel data redundancy,
Specific as follows：
A kind of direct metering method of high voltage electric energy of double-channel data redundancy, using aforesaid double-channel data redundancy
The direct metering device of high voltage electric energy, and specifically include：
Phase on the basis of the A phase of three-phase alternating current and C phase are defined as specifying the B phase of phase, three-phase alternating current to determine, adopts two
The method that table method principle measures three-phase electric energy, measures three-phase electricity energy in high-pressure side, comprises the following steps that：
Step 1, electric energy metrical unit are used A, C biphase current as current input signal；
Step 2, electric energy metrical unit are used AB, BC voltage between phases as voltage input signal；
Step 3, two electric energy metrical cell operation under high potential, respectively using the current potential of the current potential of A phase and C phase as work
The reference potential point made, collection electric current and voltage signal, calculate the electric flux of respective split-phase；
The data calculating is passed to the electric energy metrical list of offside respectively by step 4, two electric energy metrical units by optical fiber
Unit；
Step 5, after receiving the data of offside, two electric energy metrical units are for further processing to data respectively, obtain
Required conjunction phase electric flux and other electric parameters；
Adopt the method that two-way collection, two-way calculate to reach data redundancy purpose, that is, A phase metering units measure with C phase
Unit calculates conjunction phase energy data respectively；
Step 6, two electric energy metrical units store to these electric parameters, using respective communication channel by stoichiometric number
According in incoming display terminal simultaneously, realize the redundancy of communication channel between high-low pressure.
Further scheme is：In high-pressure side, voltage between phases signal is recorded by voltage signal sensor；Believed with electric current
Number sensor records A phase and the current signal of C phase, and the output signal of voltage signal sensor and current signal sensor is delivered to
The metering units of A, C phase.
Further scheme is：Described current signal sensor is provided in A phase and the high potential of C phase, one
Secondary input current and secondary output current are equipotential；The secondary output voltage of voltage signal sensor is to be located at A phase respectively
On the high potential of C phase.
Further scheme is：Described electric energy metrical unit main metering unit and submeter unit each other, two electricity
Can metering units after receiving the output signal of this side voltage signal sensor and current signal sensor, carry out this side voltage,
Electric current and the calculating of split-phase electric energy, the data calculating are passed to respectively the electric energy metrical unit of offside by optical fiber；Receiving
After the data of offside, two electric energy metrical units are for further processing to data respectively, obtain required for conjunction phase electric flux with
And other electric parameters；These electric parameters pass to the display terminal of low-pressure side while storing on the spot respectively by communication module.
Further scheme is：Described specifying is mutually A phase and B phase, and benchmark phase is C phase；Or specify is mutually B phase and C
Phase, benchmark phase is A phase.
They can be packaged together by the present invention, forms an integrated single unit system.System can also be encapsulated respectively
Make as two or three splits, when in use they are connected to become a single unit system.
Advantages of the present invention：
1. using the frame mode of integration, the more conducively installation of user；Integrated metering device greatly reduces metal
Use, make device not only light but also low-carbon environment-friendly, manufacturing cost is greatly saved；
2. adopt dual pathways calculating, storage means to reach the purpose of data redundancy so that data is safer is more easy to recovery；
3. adopt dual pathways communication mode so that communication is more reliable, be less susceptible to be affected by the external environment, reduce communication thing
Therefore generation；
4. electric current, voltage signal acquisition part are encapsulated in together with electric energy metrical unit, working power and communication module
In the metal shielding box of high potential.Purpose is to improve the anti-electromagnetic interference capability of device. and ensure and improve each part and device
High-Voltage Insulation level.
The present invention is compared with prior art：
1. assembly of the invention volume is less, it is less to take up room, and structure is simpler；
2. save more materials.Reduce high pressure bulk production cost；
3. communication is more reliable safer；
4. Data duplication preserves, and data is not easy to lose.
Brief description
Fig. 1 is the electrical principle block diagram of the present invention；
Fig. 2 is the structural representation of the present invention.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings.
As shown in figure 1 and 2, in high pressure three-phase alternating current, we are selected A phase and C phase and are made as specified phase, with B phase
On the basis of phase.A phase and C phase be respectively provided with current signal sensor La, Lc, electric energy metrical unit Ja, Jc, working power Da,
Dc, communication module Ta, Tc, equipped with voltage signal sensor Xab between AB phase voltage, believe equipped with voltage between BC phase voltage
Number sensors X bc, the output signal of current signal sensor and voltage signal sensor be respectively connected to electric energy metrical unit Ja,
Jc.
After current signal all inputs respective electric energy metrical unit with voltage signal, electric energy metrical unit Ja, Jc enter
Row data processing, A communicates module Ta by incoming for the data handled well C phase, and C communicates module Tc will be incoming for the data handled well
A phase, then each metering units Ja, Jc carry out electric energy superposition again, finally adopt twin-channel pattern by incoming for data display terminal
Or other metering systems.
Voltage between phases signal transducer Xab, Xbc can use electromagnetic potential transformer, it is possible to use non-ferric magnetic-type
Sensor, such as capacitance sensor or electric resistance sensor or resistive-capacitive sensor；The secondary coil of electromagnetic potential transformer is located respectively
On the high potential of A phase and C phase.
The working power of electric energy metrical unit is supplied by voltage between phases signal transducer Xab, Xbc.
Electric energy metrical unit Ja, Jc, working power Da, Dc and communication module Ta, Tc are encapsulated in a metal shielding box
In Sa, Sc, high-voltage electromagnetic field is shielded, weaken or avoid high-voltage electromagnetic field to the interference of these parts and its circuit and shadow
Ring.
By current signal sensor La, Lc, voltage signal sensor Xab, Xbc, electric energy metrical unit Ja, Jc, work electricity
Source Da, Dc and communication module Ta, Tc, metal shielding box Sa, Sc are encapsulated in W in an insulation crust using insulant Y, are formed
The electric power meter of one high voltage direct access.
The invention is not restricted to by A phase and C phase as phase on the basis of specifying phase, B phase it is also possible to A phase is specified phase, C phase with B phase
On the basis of phase, or B phase and C be to specify phase on the basis of phase, A phase.
As shown in Fig. 2 in the present invention program and in the device made accordingly, sensor, electric energy metrical unit are at referring to
Determine on the high potential of phase.So, Electric energy measurement needs to be delivered to electronegative potential by communication does not discharge other high potentials yet
The device specified or network, are supplied to the person of needs of Electric energy measurement.The table body of hot end can using include but not
It is limited to optical fiber, wireless, infrared and GPRS completes to communicate with the specified device of cold end or network as telecommunication media, electricity
The metering of energy and other electric parameters and measurement result are sent to purpose thing, thus completing metric results from hot end to electronegative potential
The communication transmission at end.
As shown in Fig. 2 the metering device of the present invention program and its composition is by voltage signal sensor, current signal sensing
Device and electric energy metrical unit are constituted.They can be packaged together, form an integrated single unit system.Can also distinguish
Encapsulation is fabricated to two or three splits, when in use they is connected to become a single unit system.
Claims (9)
1. a kind of double-channel data redundancy the direct metering method of high voltage electric energy it is characterised in that：Superfluous using double-channel data
The remaining direct metering device of high voltage electric energy carries out high voltage electric energy and directly measures, and specifically includes：
Phase on the basis of the A phase of three-phase alternating current and C phase are defined as specifying the B phase of phase, three-phase alternating current to determine, surveys in high-pressure side
Amount three-phase electricity energy, comprises the following steps that：
Step 1, electric energy metrical unit are used A, C biphase current as current input signal；
Step 2, electric energy metrical unit are used AB, BC voltage between phases as voltage input signal；
Step 3, two electric energy metrical cell operation under high potential, respectively using the current potential of the current potential of A phase and C phase as work
Reference potential point, collection electric current and voltage signal, calculate the electric flux of respective split-phase；
The data calculating is passed to the electric energy metrical unit of offside respectively by step 4, two electric energy metrical units by optical fiber；
Step 5, after receiving the data of offside, two electric energy metrical units are for further processing to data respectively, obtain required
The conjunction phase electric flux wanted and other electric parameters；
Adopt the method that two-way collection, two-way calculate to reach data redundancy purpose, i.e. A phase electric energy metrical unit and C phase electric energy
Metering units calculate conjunction phase electric energy data respectively；
Step 6, two electric energy metrical unit pairing phase electric fluxs and other electric parameters are stored, using respective communication letter
Communication letter between high-low pressure, by the continuous data of conjunction phase electric flux and other electric parameters simultaneously incoming display terminal, is realized in road
The redundancy in road；
The direct metering device of high voltage electric energy of described double-channel data redundancy includes two current signal sensor, two metals
Shielding box and two voltage signal sensor, are by working power, electric energy metrical unit and communication module set in metal shielding box
The high-voltage metering device becoming, current signal sensor and voltage signal sensor are all connected with electric energy metrical unit, two electricity
Can be connected by optical fiber between metering units；Working power is connected with voltage signal sensor and electric energy metrical unit respectively；Electricity
Metering units display terminal can be transferred data to by communication module.
2. double-channel data redundancy according to claim 1 the direct metering method of high voltage electric energy it is characterised in that：?
High-pressure side records voltage between phases signal by voltage signal sensor；Record the electric current letter of A phase and C phase with current signal sensor
Number, the output signal of voltage signal sensor and current signal sensor is delivered to A, C phase electric energy metrical unit.
3. double-channel data redundancy according to claim 2 the direct metering method of high voltage electric energy it is characterised in that：Institute
State current signal sensor to be provided in A phase and the high potential of C phase, its input current and secondary output current are
Current potential；The secondary output voltage of voltage signal sensor is to be located at respectively in A phase and the high potential of C phase.
4. double-channel data redundancy according to claim 3 the direct metering method of high voltage electric energy it is characterised in that：Institute
State electric energy metrical unit main metering unit and submeter unit each other, two electric energy metrical units are receiving this side voltage signal
After the output signal of sensor and current signal sensor, carry out the calculating of this side voltage, electric current and split-phase electric energy, will calculate
Data pass to the electric energy metrical unit of offside respectively by optical fiber；After receiving the data of offside, two electric energy metrical units
Respectively data is for further processing, obtain required for conjunction phase electric flux and other electric parameters, close phase electric flux and its
His electric parameters pass to the display terminal of low-pressure side while storing on the spot respectively by communication module.
5. the direct metering method of high voltage electric energy of double-channel data redundancy described in Claims 1-4 any claim, it is special
Levy and be：Described specifying is mutually A phase and B phase, and benchmark phase is C phase；Or specifying is mutually B phase and C phase, and benchmark phase is A phase.
6. double-channel data redundancy according to claim 1 the direct metering method of high voltage electric energy it is characterised in that：Institute
The direct metering device of high voltage electric energy of the double-channel data redundancy stated is arranged on inside an insulation crust, and insulation crust
Inside is filled with insulant.
7. double-channel data redundancy according to claim 1 the direct metering method of high voltage electric energy it is characterised in that：Institute
The communication module stated is by optical fiber is wireless or infrared or GPRS or combinations thereof transmit data to display terminal.
8. double-channel data redundancy according to claim 1 the direct metering method of high voltage electric energy it is characterised in that：Institute
The voltage signal sensor stated uses electromagnetic potential transformer, or uses non-ferric magnetic-type sensor；Described current signal passes
Sensor uses the current transformer of electromagnetic type, or low power consumption current transformer.
9. double-channel data redundancy according to claim 8 the direct metering method of high voltage electric energy it is characterised in that：Institute
The non-ferric magnetic-type sensor stated is capacitance sensor or electric resistance sensor or resistive-capacitive sensor.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016080556A1 (en) * | 2014-11-18 | 2016-05-26 | RI, Myong Ju | Suspension electronic current transformer |
| CN107102201A (en) * | 2017-04-01 | 2017-08-29 | 国网山东省电力公司枣庄供电公司 | A kind of integrated high-pressure electric power meter |
| CN111308191A (en) * | 2020-03-26 | 2020-06-19 | 国家能源集团宁夏煤业有限责任公司 | Coal mine electric energy metering system |
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