CN201355379Y - Integral intelligent monitoring device of distribution transformer - Google Patents
Integral intelligent monitoring device of distribution transformer Download PDFInfo
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- CN201355379Y CN201355379Y CNU2009200675887U CN200920067588U CN201355379Y CN 201355379 Y CN201355379 Y CN 201355379Y CN U2009200675887 U CNU2009200675887 U CN U2009200675887U CN 200920067588 U CN200920067588 U CN 200920067588U CN 201355379 Y CN201355379 Y CN 201355379Y
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Abstract
The utility model relates to an integral intelligent monitoring device of distribution transformer, which comprises an original signal of three-phase current and voltage and a digital signal processing chip, wherein the original signal of three-phase current and voltage is connected with a signal conditioning circuit, the signal conditioning circuit is connected with a high-speed and high-precision analogue/digital conversion chip, the high-speed and high-precision analogue/digital conversion chip is connected with the digital signal processing chip, the digital signal processing chip is further connected with a clock circuit, a communicating module, an interface circuit, a remote signaling circuit, a storage and liquid crystal and key-presses, the device has the beneficial effects that integrated requirements to the monitoring of a distribution transformer by a power supplying department is centralized in a single station device, which can effectively simply the installing work, beautifies the installing environment, is convenient to daily management, and improves the economic benefits of electrical investment.
Description
Technical field
The utility model relates to a kind of substation transformer, relates in particular to the monitoring device of this substation transformer.
Background technology
In power circuit, substation transformer is a key equipment of power distribution being given low-voltage customer.Existing distributing transformer monitoring device, its inner majority adopts electric energy computation chips, only can satisfy the acquisition function of electric energy metrical function and master data.Along with improving constantly of living standards of the people, also obvious day by day to the requirement of power supply quality, for example data such as rate of qualified voltage, power supply reliability, percent harmonic distortion become one of important performance assessment criteria of power supply department service quality.The integration requirement of analyzing for the data acquisition of satisfying power distribution network, electric energy metrical and power supply quality, power supply department has to many table apparatus are installed on substation transformer, and this not only causes the trouble of installment work, and whole cost is too high, complex management is difficult to embody returns of investment.
Summary of the invention
The utility model technical issues that need to address have provided the integrated monitoring intelligent device of a kind of substation transformer, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: the original signal of three-phase current and voltage; Also comprise: DSP (digital signal processing chip); The original signal of described three-phase current and voltage is connected signal conditioning circuit; Signal conditioning circuit connects ADC (high-speed, high precision analog-digital chip); ADC (high-speed, high precision analog-digital chip) links to each other with DSP (digital signal processing chip); DSP (digital signal processing chip) also links to each other with clock circuit, communication module, interface circuit, remote signalling circuit, storer and liquid crystal and button respectively.
Compared with prior art, the beneficial effects of the utility model are: power supply department is concentrated in the unitary device the integration requirement of distributing transformer monitoring realize, can effectively simplify installment work, beautify installation environment, make things convenient for daily management, improve the economic benefit of electric power investment.
Description of drawings
Fig. 1 is a module map of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 1: the utility model comprises: the original signal of three-phase current and voltage; Also comprise: DSP (digital signal processing chip); The original signal of described three-phase current and voltage is connected signal conditioning circuit; Signal conditioning circuit connects ADC (high-speed, high precision analog-digital chip); ADC (high-speed, high precision analog-digital chip) links to each other with DSP (digital signal processing chip); DSP (digital signal processing chip) also links to each other with clock circuit, communication module, interface circuit, the remote signalling circuit, storer and the liquid crystal that are connected switching value and button respectively.
Can't concentrate the present situation of integration requirements such as satisfying data acquisition, electric energy metrical and power supply quality analysis in order to overcome existing distributing transformer monitoring device, the utility model proposes a kind of novel distributing transformer monitoring device.This terminal not only can be carried out electric energy metrical and master data collection to distribution transforming, and can the analytical voltage qualification rate, power supply reliability, percent harmonic distortion etc. can embody the significant data of power supply quality, power supply department is concentrated in the unitary device the integration requirement of power distribution network monitoring realizes.
The utility model is not to rely on electric energy computation chip, but adopt the High-Speed High-Accuracy AD Acquisition Circuit, the analog signal conversion of three-phase current/voltage is become high-precision discrete value, make full use of the advantage of dsp chip signal Processing again, pass through integration, interpolation, signal processing software algorithms such as Fourier transform calculate, analyze, judge and accumulation, finally obtaining needed three-phase four-quadrant gains merit/reactive energy, total gaining merit/idle/apparent electric energy, total gaining merit/electric energy measurement datas such as idle requirement, three-phase current/voltage, zero-sequence current/voltage, three-phase four-quadrant is gained merit/reactive power, total gaining merit/idle/applied power, three-phase and total power factor, the current/voltage unbalance factor, mains frequency, operational monitoring data such as remote signalling incident, and rate of qualified voltage, current/voltage harmonic wave resultant distortion rate, 2～31 each harmonic containing ratios of current/voltage, power supply quality data such as power supply reliability.
The utility model at first passes through the original signal of three-phase current/voltage the pre-service of signal conditioning circuit, convert the simulating signal of suitable ADC sampling to, then pass through high speed, the sampling with high precision of ADC, convert the discrete value that suitable DSP handles to, calculate the instantaneous value of three-phase current/voltage and 2～31 subharmonic thereof again by DSP.On this basis, make full use of the signal Processing advantage of DSP, pass through integration, interpolation, signal processing software algorithms such as Fourier transform calculate, analyze, judge and accumulation, finally obtaining needed three-phase four-quadrant gains merit/reactive energy, total gaining merit/idle/apparent electric energy, total gaining merit/electric energy measurement datas such as idle requirement, three-phase current/voltage, zero-sequence current/voltage, three-phase four-quadrant is gained merit/reactive power, total gaining merit/idle/applied power, three-phase and total power factor, the current/voltage unbalance factor, operational monitoring data such as mains frequency, and rate of qualified voltage, current/voltage harmonic wave resultant distortion rate, 2～31 each harmonic containing ratios of current/voltage, power supply quality data such as power supply reliability.DSP can control the sampling of ADC as required.
The level signal that the switching value original signal at first becomes suitable DSP to handle through the remote signalling circuit conversion is directly judged deciliter state that obtains switching value by DSP again, generates the remote signalling incident.
Communication module realizes and the remote communicating function of backstage main website that can adopt GPRS, CDMA, wireless communication modes such as wireless station also can adopt Ethernet, wired mode such as ADSL.Interface circuit is realized the cascade function with other devices, and maintenance function of the present utility model, can adopt multiple modes such as RS232, RS485, CAN.Carry out data interaction between DSP and communication module and the interface circuit, and can be provided with them as required.
DSP is access data and parameter in storer, and can be provided with it as required.
Liquid crystal and button provide the man-machine interface of convenience use, are responded the displaying contents of its actuation of keys and control liquid crystal by DSP.
DSP obtains necessary clock information by clock circuit, and can be provided with it as required.
The utility model adopts the module of prior art and with its combination, the structural design compactness, and with high content of technology, precision can reach 0.2 grade of current/voltage, 0.5 grade of zero-sequence current/voltage, 0.5 grade of power, 0.2 grade of power factor, harmonic wave A level, frequency 0.01Hz, the requirement of meritorious/0.5 grade of reactive energy.Because data processing function is realized by software substantially, can greatly reduce the manufacturing cost of device.
Claims (1)
1. the integrated monitoring intelligent device of substation transformer comprises: the original signal of three-phase current and voltage; It is characterized in that also comprising: digital signal processing chip; The original signal of described three-phase current and voltage is connected signal conditioning circuit; Signal conditioning circuit connects the high-speed, high precision analog-digital chip; The high-speed, high precision analog-digital chip links to each other with digital signal processing chip; Digital signal processing chip also links to each other with clock circuit, communication module, interface circuit, remote signalling circuit, storer and liquid crystal and button respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200675887U CN201355379Y (en) | 2009-02-10 | 2009-02-10 | Integral intelligent monitoring device of distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200675887U CN201355379Y (en) | 2009-02-10 | 2009-02-10 | Integral intelligent monitoring device of distribution transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355379Y true CN201355379Y (en) | 2009-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200675887U Expired - Fee Related CN201355379Y (en) | 2009-02-10 | 2009-02-10 | Integral intelligent monitoring device of distribution transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355379Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721887A (en) * | 2012-06-30 | 2012-10-10 | 李钢 | Three-phase electrical parameter gathering device and method for analyzing and processing three-phase electrical signals |
| CN108614183A (en) * | 2018-05-29 | 2018-10-02 | 国网黑龙江省电力有限公司绥化供电公司 | Using the distribution transformer intelligent checking system of microcontroller |
-
2009
- 2009-02-10 CN CNU2009200675887U patent/CN201355379Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721887A (en) * | 2012-06-30 | 2012-10-10 | 李钢 | Three-phase electrical parameter gathering device and method for analyzing and processing three-phase electrical signals |
| CN108614183A (en) * | 2018-05-29 | 2018-10-02 | 国网黑龙江省电力有限公司绥化供电公司 | Using the distribution transformer intelligent checking system of microcontroller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Integral intelligent monitoring device of distribution transformer Effective date of registration: 20110428 Granted publication date: 20091202 Pledgee: Shanghai, Xuhui, Company limited by guarantee Pledgor: Shanghai Win-power Electric Power Technology Co., Ltd. Registration number: 2011990000151 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20120309 Granted publication date: 20091202 Pledgee: Shanghai, Xuhui, Company limited by guarantee Pledgor: Shanghai Win-power Electric Power Technology Co., Ltd. Registration number: 2011990000151 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Integral intelligent monitoring device of distribution transformer Effective date of registration: 20120426 Granted publication date: 20091202 Pledgee: Xuhui Shanghai financing Company limited by guarantee Pledgor: Shanghai Win-power Electric Power Technology Co., Ltd. Registration number: 2012990000173 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20130618 Granted publication date: 20091202 Pledgee: Xuhui Shanghai financing Company limited by guarantee Pledgor: Shanghai Win-power Electric Power Technology Co., Ltd. Registration number: 2012990000173 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20170210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |