CN203054086U - Portable high-voltage transmission line harmonic wave detector - Google Patents
Portable high-voltage transmission line harmonic wave detector Download PDFInfo
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- CN203054086U CN203054086U CN 201220671195 CN201220671195U CN203054086U CN 203054086 U CN203054086 U CN 203054086U CN 201220671195 CN201220671195 CN 201220671195 CN 201220671195 U CN201220671195 U CN 201220671195U CN 203054086 U CN203054086 U CN 203054086U
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Abstract
The utility model discloses a portable high-voltage transmission line harmonic wave detector. The detector comprises a harmonic wave data collector and a harmonic wave data receiver, wherein the harmonic wave data collector and the harmonic wave data receiver communicate with each other by wireless transmission and are completely electrically isolated. The detector carries out the direct measurement on the high-voltage transmission line harmonic waves by using the electric field coupling principles.
Description
Technical field
The utility model relates to a kind of a kind of portable high-pressure transmission line harmonic detector for detection of high-tension line harmonic wave situation.
Background technology
Electric energy is the most widely used energy of modern society, and development of modern industry has been brought the contradiction between the decline of the electrical network quality of power supply and the high-quality electrical energy demands.On the one hand, because the popularization of power-saving technology and automatic technology, the access of nonlinear disturbance loads such as various power electronic equipments such as large-scale electric arc furnaces, electric locomotive, rectifying installation, frequency converter, current transformer, Switching Power Supply, reactor is increasing, the demand of electric energy is increased day by day, and inevitably the higher harmonic current that produces is injected electrical network in a large number, caused such as phenomenons such as grid voltage waveform distortion, voltage flicker, interference, caused the quality of power supply to worsen day by day; On the other hand, because the needs of Development of Power Electronic Technology, sensitive load equipment such as various chip manufacturings, precise machining equipment such as frequency-changing speed-regulating driver, robot, automatic assembly line, Programmable Logic Controller, computer information system have not only proposed more strict requirement to power supply qualitys such as supply voltage interruption, flickering and harmonic contents, and very responsive to fluctuation and the external interference of power supply.The deterioration of any power supply quality all may cause the decline of product quality, causes great economic loss.As seen, power quality problem not only influences safety, economy, the reliability service of equipment in the electrical network, be related to normal industrial and agricultural production, and hindered the development of Power Electronic Technique, and having reduced people's quality of life, the management of power supply reliability and power supply quality is attached great importance in countries in the world, therefore, in order better to take measures to suppress harmonic wave, improving power supply quality just need be more convenient, and safer high-voltage fence checkout equipment carries out accurate, real-time monitoring to electrical network parameter.
Harmonic wave detects as an important branch in the harmonic problem, can detect distortion current, voltage in the electrical network accurately, in real time, to suppressing harmonic wave important directive function is arranged.It is basis and the main foundation of every work that harmonic wave detects.Whether the harmonics level that the detection of mains by harmonics is convenient to identify practical power systems and harmonic source user on the one hand standard compliant regulation, comprises the measurement when equipment to all harmonic source users puts into operation.On the other hand in electrical equipment debugging, harmonic measure when putting into operation, to guarantee equipment put into operation safety and the economical operation of back electric system and equipment.Help to get rid of harmonic failure or other abnormal causes by the detection to mains by harmonics, help the test of harmonic wave special topic, as harmonic impedance, harmonic trend, harmonic resonance and amplification etc.
Development along with Power Electronic Technique, the harmonic problem that power electronic equipment brings is to power system security, stable, economical operation formation potential threat, electric circumstance has brought very big influence around giving, harmonic wave is considered to big public hazards of electrical network, also hindered simultaneously the development of Power Electronic Technique, therefore, the research of Harmonious Waves in Power Systems problem is paid attention to gradually by people.The harmonic wave that nonlinear loads such as power electronic equipment produce can cause the overload of load and transmission facility, out of control and increase loss, even the safety of serious harm electrical network and consumer.Along with Power Electronic Technique in family, industry, traffic, the increasingly extensive application of national defence, the continuous increase of the power capacity of power electronic equipment own and power density, electrical network suffers harmonic pollution also serious day by day, harmonic wave harm can be summed up as:
1) consume idle and increase line loss;
2) cause apparatus overload, reduce apparatus insulated grade, accelerate insulation ag(e)ing even cause fire etc.;
3) reduce loaded work piece performance (as making motor produce additional moment etc.);
4) influence the accuracy of measuring, influence device reliability services such as relay protection;
5) communication system and computer network are produced electromagnetic interference (EMI) etc.;
6) cause system's instability, the harm electric power netting safe running.
Mains by harmonics has become one of major obstacle of many electronic equipments and system for field reliability service, and the problem of harmonic pollution has also seriously hindered applying such as large quantities of efficient, energy-saving power electronic technology such as frequency control.Therefore, both at home and abroad all in the improvement method of stepping up to study harmonic pollution.But also can't directly directly measure high-voltage fence line harmonic situation at present, has only the employing round-about way, more high more being difficult to of electric pressure realizes, and the portable high-pressure transmission line harmonic detector of the non-cpntact measurement high-voltage fence that the utility model proposes can solve the problem that can't directly measure at present.
Summary of the invention
Technical problem to be solved in the utility model is how to utilize capacitance type sensor to obtain the portable high-pressure transmission line harmonic detector of ultra-high-tension power transmission line harmonic wave situation.For solving the problems of the technologies described above, the utility model provides a kind of field intensity type to detect the portable high-pressure transmission line harmonic detector of high-tension line harmonic wave situation.
Portable high-pressure transmission line harmonic detector comprises harmonic data collector, harmonic data receiver; Pass through wirelessly transmitting information between harmonic data collector and the harmonic data receiver, and realize complete electrical isolation.
The harmonic data collector comprises voltage induced formula sensor, frequency analysis special circuit, data acquisition microprocessor, radio transmitter and collection terminal power circuit; Voltage induced formula sensor contacts with ultra-high-tension power transmission line and obtains the voltage harmonic signal, and the output terminal of voltage induced formula sensor is connected with the input end of frequency analysis special circuit; The output terminal of frequency analysis special circuit is connected with the A/D end of data acquisition microprocessor; The input end of radio transmitter is connected with the serial ports of data acquisition microprocessor; The collection terminal power circuit is connected with the power end of data acquisition microprocessor.
The harmonic data receiver comprises that wireless receiving circuit, clock circuit, data receive microprocessor, keyboard circuit, display circuit and receiving end power circuit; The output terminal of wireless receiving circuit is connected with the serial ports that data receive microprocessor; The output terminal of clock circuit is connected with the I/O mouth that data receive microprocessor; The output terminal of keyboard circuit is connected with the I/O mouth that data receive microprocessor; The input end of display circuit is connected with the I/O mouth that data receive microprocessor; The receiving end power circuit is connected with the power end of data acquisition microprocessor.
The utlity model has positive effect: (1) portable high-pressure transmission line harmonic of the present utility model detector, utilize capacitance type sensor noncontact mode can directly obtain the ultra-high-tension power transmission line harmonic signal.(2) portable high-pressure transmission line harmonic detector of the present utility model, by the wirelessly transmitting information harmonic data, collector and harmonic data receiver are realized electrical isolation fully between harmonic data collector and the harmonic data receiver.
Description of drawings
Fig. 1 is the portable high-pressure transmission line harmonic detector schematic diagram of embodiment 1.
Fig. 2 is the harmonic data collector schematic diagram of embodiment 1.
Fig. 3 is the harmonic data receiver schematic diagram of embodiment 1.
Embodiment
See Fig. 1, Fig. 2, Fig. 3, the portable high-pressure transmission line harmonic detector of present embodiment comprises harmonic data collector 1, harmonic data receiver 2; Pass through wirelessly transmitting information between harmonic data collector 1 and the harmonic data receiver 2, and realize complete electrical isolation.
Harmonic data collector 1 comprises voltage induced formula sensor 3, frequency analysis special circuit 4, data acquisition microprocessor 5, radio transmitter 6 and collection terminal power circuit 7; Voltage induced formula sensor 3 contacts with ultra-high-tension power transmission line and obtains the voltage harmonic signal, and the output terminal of voltage induced formula sensor 3 is connected with the input end of frequency analysis special circuit 4; The output terminal of frequency analysis special circuit 4 is connected with the A/D end of data acquisition microprocessor 5; The input end of radio transmitter 6 is connected with the serial ports of data acquisition microprocessor 5; Collection terminal power circuit 7 is connected with the power end of data acquisition microprocessor 5.
Harmonic data receiver 2 comprises that wireless receiving circuit 8, clock circuit 9, data receive microprocessor 10, keyboard circuit 11, display circuit 12 and receiving end power circuit 13; The output terminal of wireless receiving circuit 8 is connected with the serial ports that data receive microprocessor 10; The output terminal of clock circuit 9 is connected with the I/O mouth that data receive microprocessor 10; The output terminal of keyboard circuit 11 is connected with the I/O mouth that data receive microprocessor 10; The input end of display circuit 12 is connected with the I/O mouth that data receive microprocessor 10; Receiving end power circuit 13 is connected with the power end of data acquisition microprocessor 10.
Claims (3)
1. portable high-pressure transmission line harmonic detector is characterized in that, comprises harmonic data collector (1), harmonic data receiver (2); Transmit information by less radio-frequency between harmonic data collector (1) and the harmonic data receiver (2), realize electrical isolation fully.
2. portable high-pressure transmission line harmonic detector as claimed in claim 1, it is characterized in that, harmonic data collector (1) comprises voltage induced formula sensor (3), frequency analysis special circuit (4), data acquisition microprocessor (5), radio transmitter (6) and collection terminal power circuit (7); Voltage induced formula sensor (3) contacts with ultra-high-tension power transmission line and obtains the voltage harmonic signal, and the output terminal of voltage induced formula sensor (3) is connected with the input end of frequency analysis special circuit (4); The output terminal of frequency analysis special circuit (4) is connected with the A/D end of data acquisition microprocessor (5); The input end of radio transmitter (6) is connected with the serial ports of data acquisition microprocessor (5); Collection terminal power circuit (7) is connected with the power end of data acquisition microprocessor (5).
3. portable high-pressure transmission line harmonic detector as claimed in claim 1, it is characterized in that, harmonic data receiver (2) comprises that wireless receiving circuit (8), clock circuit (9), data receive microprocessor (10), keyboard circuit (11), display circuit (12) and receiving end power circuit (13); The output terminal of wireless receiving circuit (8) is connected with the serial ports that data receive microprocessor (10); The output terminal of clock circuit (9) is connected with the I/O mouth that data receive microprocessor (10); The output terminal of keyboard circuit (11) is connected with the I/O mouth that data receive microprocessor (10); The input end of display circuit (12) is connected with the I/O mouth that data receive microprocessor (10); Receiving end power circuit (13) is connected with the power end of data acquisition microprocessor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220671195 CN203054086U (en) | 2012-12-09 | 2012-12-09 | Portable high-voltage transmission line harmonic wave detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220671195 CN203054086U (en) | 2012-12-09 | 2012-12-09 | Portable high-voltage transmission line harmonic wave detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054086U true CN203054086U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220671195 Expired - Lifetime CN203054086U (en) | 2012-12-09 | 2012-12-09 | Portable high-voltage transmission line harmonic wave detector |
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| Country | Link |
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| CN (1) | CN203054086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499740A (en) * | 2013-09-30 | 2014-01-08 | 河南开启电力实业有限公司 | Online detection device for power grid harmonic waves |
-
2012
- 2012-12-09 CN CN 201220671195 patent/CN203054086U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499740A (en) * | 2013-09-30 | 2014-01-08 | 河南开启电力实业有限公司 | Online detection device for power grid harmonic waves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |