CN205038272U - Electric energy quality monitoring and controlling system - Google Patents

Electric energy quality monitoring and controlling system Download PDF

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Publication number
CN205038272U
CN205038272U CN201520667766.5U CN201520667766U CN205038272U CN 205038272 U CN205038272 U CN 205038272U CN 201520667766 U CN201520667766 U CN 201520667766U CN 205038272 U CN205038272 U CN 205038272U
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China
Prior art keywords
described
circuit
information system
power
supervisory information
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CN201520667766.5U
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Chinese (zh)
Inventor
董天强
殷健
林晓庆
张鸷
唐贤敏
孙航
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贵州电网有限责任公司贵阳供电局
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Priority to CN201520667766.5U priority Critical patent/CN205038272U/en
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Publication of CN205038272U publication Critical patent/CN205038272U/en

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Abstract

The embodiment of the utility model provides an electric energy quality monitoring and controlling system, include: treater, voltage transformer circuit, current transformer circuit, signal conditioning circuit, active power filter circuit and power module, voltage transformer circuit, current transformer circuit, signal conditioning circuit, active power filter circuit and power module all are connected with the treater. In this embodiment, all be connected with the treater through voltage transformer circuit, current transformer circuit, signal conditioning circuit, active power filter circuit and power module, realized multi -functional electric energy quality monitoring and controlling system.

Description

A kind of power quality supervisory information system

Technical field

The utility model relates to technical field of electric power, particularly relates to a kind of power quality supervisory information system.

Background technology

Flourish along with Chinese national economy, electric load sharply strengthens, current converter is in the widespread use of each field, various impact and nonlinear-load increase such as day by day: the silicon rectifier device of water and salt electrolysis, electric locomotive in electric railway, dragging silicon commutating power supply, electric arc furnaces, the RHVC of direct-current transmission converter station and various widespread use, ac voltage regulator etc., these nonlinear-loads cause electric system current waveform to distort, the power quality problem such as voltage fluctuation and flicker and three-phase imbalance, cause serious harm such as to safe operation of power system: to cause protection and automatic safety device malfunction, cause electric rotating machine added losses, heating and mechanical vibration, thus cause capacitor overheated, error is brought to electric energy metrical and normal and instrument, interference etc. is produced to communication line.China strengthens, to the monitoring of electric harmonic, management and improvement, formally having promulgated GB/T14549-93 national standard " quality of power supply--utility network harmonic wave " in 1994.

In current electrical network, the ripe application of the online quality supervision sense terminals of electric energy, but only have detection computations and backstage Presentation Function; To data statistics administrative skill backwardness partially; When carrying out harmonic wave control and reactive power compensation just needs independent switching device, and the electrical energy parameter again carrying out being correlated with is needed to measure in order to accurate compensation reactive power and harmonic wave control.

Thus, along with the energy saving requirement of enterprise, the requirement of power grid flexible power supply technique, the application of cloud, be badly in need of the power quality supervisory information system of the integrated detection of exploitation, calculating, data fusion, Advanced Control Techniques.

Utility model content

The utility model embodiment discloses a kind of power quality supervisory information system, all be connected with processor with power module by voltage transformer circuit, current transformer circuit, signal conditioning circuit, Active Power Filter-APF circuit, achieve multi-functional power quality supervisory information system.

The utility model embodiment provides a kind of power quality supervisory information system, comprising:

Processor, voltage transformer circuit, current transformer circuit, signal conditioning circuit, Active Power Filter-APF circuit and power module;

Described voltage transformer circuit, described current transformer circuit, described signal conditioning circuit, described Active Power Filter-APF circuit are all connected with described processor with described power module.

Preferably, described power quality supervisory information system also comprises:

Capacitor group switching circuit, is connected with described processor.

Preferably, described power quality supervisory information system also comprises:

LCD MODULE, is connected with described processor.

Preferably, described power quality supervisory information system also comprises: keyboard human-computer interaction module, is connected with described processor.

Preferably, described voltage transformer circuit, described current transformer circuit, described signal conditioning circuit are used for line voltage electric current to be converted to processor collection signal.

Preferably, described Active Power Filter-APF circuit and described capacitor group switching circuit are for reactive-load compensation during three-phase imbalance.

Preferably, described LCD MODULE is for showing the parameter such as electric energy metrical parameter and electrical network three-phase voltage current.

Preferably, described keyboard human-computer interaction module is used for the switching of display interface and choosing of the control of reactive power compensating strategy.

Preferably, described power module is used for providing stabilized power source to each module of system.

Preferably, described processor is MCU.

As can be seen from the above technical solutions, the utility model embodiment has the following advantages:

The utility model embodiment provides a kind of power quality supervisory information system, comprising: processor, voltage transformer circuit, current transformer circuit, signal conditioning circuit, Active Power Filter-APF circuit and power module; Voltage transformer circuit, current transformer circuit, signal conditioning circuit, Active Power Filter-APF circuit are all connected with processor with power module.In the present embodiment, be all connected with processor with power module by voltage transformer circuit, current transformer circuit, signal conditioning circuit, Active Power Filter-APF circuit, achieve multi-functional power quality supervisory information system.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

A kind of structural representation of power quality supervisory information system of Fig. 1 for providing in the utility model embodiment.

Embodiment

The utility model embodiment discloses a kind of power quality supervisory information system, all be connected with processor with power module by voltage transformer circuit, current transformer circuit, signal conditioning circuit, Active Power Filter-APF circuit, achieve multi-functional power quality supervisory information system.

Refer to Fig. 1, an embodiment of a kind of power quality supervisory information system provided in the utility model embodiment comprises:

Processor 1, voltage transformer circuit 2, current transformer circuit 3, signal conditioning circuit 4, Active Power Filter-APF circuit and power module 5;

Described voltage transformer circuit 2, described current transformer circuit 3, described signal conditioning circuit 4, described Active Power Filter-APF circuit are all connected with described processor 1 with described power module 5.

Preferably, described power quality supervisory information system also comprises:

Capacitor group switching circuit, is connected with described processor 1.

Preferably, described power quality supervisory information system also comprises:

LCD MODULE 6, is connected with described processor 1.

Preferably, described power quality supervisory information system also comprises: keyboard human-computer interaction module 7, is connected with described processor 1.

Preferably, described voltage transformer circuit 2, described current transformer circuit 3, described signal conditioning circuit 4 are for being converted to processor collection signal by line voltage electric current.

Preferably, described Active Power Filter-APF circuit and described capacitor group switching circuit are for reactive-load compensation during three-phase imbalance.

Preferably, described LCD MODULE 6 is for showing the parameter such as electric energy metrical parameter and electrical network three-phase voltage current.

Preferably, described keyboard human-computer interaction module 7 is for the switching of display interface and choosing of the control of reactive power compensating strategy.

Preferably, described power module 5 is for providing stabilized power source to each module of system.

Preferably, described processor 1 is MCU.

Present system design mainly realizes electric energy metrical, Detecting Power Harmonics, no-power compensation function, using ARM+DSP as controller, the real time measure realized electric energy is converted by Fast Fourier Transform (FFT) FFT, the real-time detection of harmonic wave, and select switching capacitance or Active Power Filter-APF compensation way as required.Electric energy metrical mainly comprises voltage, current effective value, active power, applied power, power factor, active energy, the Real-Time Monitoring of capacity of idle power.Detecting Power Harmonics mainly realizes monitoring the harmonic wave of three-phase voltage, reaches corresponding accuracy requirement.No-power compensation function mainly through two kinds of modes, mode one switching capacitance; Mode two Active Power Filter-APF.According to the difference of control objectives parameter, power factor controlling, Reactive Power Control, reactive current control, Control of Voltage and multi-parameter comprehensive can be divided into control.

Processor 1 gathers electrical network three-phase voltage, current signal through superpotential, current transformer and signal conditioning circuit, through Fast Fourier Transform (FFT), obtain the related data of each harmonic, the calculating of line correlation electrical energy parameter of going forward side by side, the result after process is shown in real time in LCDs.Power factor controlling is comprised by selecting the target component controlling reactive-load compensation, Reactive Power Control, reactive current control, Control of Voltage and multi-parameter comprehensive control mode, the mode of reactive-load compensation is selected according to concrete applied environment, comprehensive electrical network three-phase imbalance situation selects corresponding control strategy, by opening-closing capacitor bank or the mode compensating reactive power controlling active filter.

Simultaneity factor is communicated with host computer data receiver by serial ports, by the electric network data gathered, electric energy parameter after calculating comprises voltage, current effective value, active power, applied power, power factor, active energy, capacity of idle power etc. and electrical network three-phase imbalance situation, compensation effect is in addition record, preserves in real-time update to database.

The utility model embodiment provides a kind of power quality supervisory information system, comprising: processor 1, voltage transformer circuit 2, current transformer circuit 3, signal conditioning circuit 4, Active Power Filter-APF circuit and power module 5; Current transformer circuit 3, signal conditioning circuit 4, Active Power Filter-APF circuit and power module 5 are all connected with described processor 1.In the present embodiment, be all connected with described processor 1 by current transformer circuit 3, signal conditioning circuit 4, Active Power Filter-APF circuit and power module 5, achieve multi-functional power quality supervisory information system.

Above a kind of power quality supervisory information system provided by the utility model is described in detail, for one of ordinary skill in the art, according to the thought of the utility model embodiment, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims (10)

1. a power quality supervisory information system, is characterized in that, comprising:
Processor, voltage transformer circuit, current transformer circuit, signal conditioning circuit, Active Power Filter-APF circuit and power module;
Described voltage transformer circuit, described current transformer circuit, described signal conditioning circuit, described Active Power Filter-APF circuit are all connected with described processor with described power module.
2. power quality supervisory information system according to claim 1, is characterized in that, described power quality supervisory information system also comprises:
Capacitor group switching circuit, is connected with described processor.
3. power quality supervisory information system according to claim 1, is characterized in that, described power quality supervisory information system also comprises:
LCD MODULE, is connected with described processor.
4. power quality supervisory information system according to claim 1, is characterized in that, described power quality supervisory information system also comprises: keyboard human-computer interaction module, is connected with described processor.
5. power quality supervisory information system according to claim 1, is characterized in that, described voltage transformer circuit, described current transformer circuit, described signal conditioning circuit are used for line voltage electric current to be converted to processor collection signal.
6. power quality supervisory information system according to claim 2, is characterized in that, described Active Power Filter-APF circuit and described capacitor group switching circuit are used for reactive-load compensation during three-phase imbalance.
7. power quality supervisory information system according to claim 3, is characterized in that, described LCD MODULE is for showing the parameter such as electric energy metrical parameter and electrical network three-phase voltage current.
8. power quality supervisory information system according to claim 4, is characterized in that, described keyboard human-computer interaction module is used for the switching of display interface and choosing of the control of reactive power compensating strategy.
9. power quality supervisory information system according to claim 1, is characterized in that, described power module is used for providing stabilized power source to each module of system.
10. power quality supervisory information system as claimed in any of claims 1 to 9, is characterized in that, described processor is MCU.
CN201520667766.5U 2015-08-31 2015-08-31 Electric energy quality monitoring and controlling system CN205038272U (en)

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CN201520667766.5U CN205038272U (en) 2015-08-31 2015-08-31 Electric energy quality monitoring and controlling system

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Application Number Priority Date Filing Date Title
CN201520667766.5U CN205038272U (en) 2015-08-31 2015-08-31 Electric energy quality monitoring and controlling system

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CN205038272U true CN205038272U (en) 2016-02-17

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106099934A (en) * 2016-06-19 2016-11-09 哈尔滨理工大学 A kind of low-voltage platform area power quality controlling device
CN108493964A (en) * 2018-04-20 2018-09-04 国家电网公司 Mixed type three-phase load unbalance automatic regulating apparatus
CN109031184A (en) * 2018-10-31 2018-12-18 国网河北省电力有限公司电力科学研究院 A kind of monitoring method of electric energy metering device, system and terminal device
CN109142868A (en) * 2018-08-10 2019-01-04 上海电机学院 Electric harmonic detector
CN109193627A (en) * 2018-09-17 2019-01-11 镇江博慧自动化技术研究院有限公司 The power quality supervisory information system of distributed wireless networks

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106099934A (en) * 2016-06-19 2016-11-09 哈尔滨理工大学 A kind of low-voltage platform area power quality controlling device
CN108493964A (en) * 2018-04-20 2018-09-04 国家电网公司 Mixed type three-phase load unbalance automatic regulating apparatus
CN109142868A (en) * 2018-08-10 2019-01-04 上海电机学院 Electric harmonic detector
CN109193627A (en) * 2018-09-17 2019-01-11 镇江博慧自动化技术研究院有限公司 The power quality supervisory information system of distributed wireless networks
CN109031184A (en) * 2018-10-31 2018-12-18 国网河北省电力有限公司电力科学研究院 A kind of monitoring method of electric energy metering device, system and terminal device

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