CN104698265A - High-voltage direct current transmission line corona loss measurement system - Google Patents
High-voltage direct current transmission line corona loss measurement system Download PDFInfo
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- CN104698265A CN104698265A CN201510142121.4A CN201510142121A CN104698265A CN 104698265 A CN104698265 A CN 104698265A CN 201510142121 A CN201510142121 A CN 201510142121A CN 104698265 A CN104698265 A CN 104698265A
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Abstract
The invention discloses a high-voltage direct current transmission line corona loss measurement system. The high-voltage direct current transmission line corona loss measurement system comprises a corona current measurement system, a high voltage measurement system and a comprehensive corona loss processing unit; the comprehensive corona loss processing unit receives, calculates and processes the corona current value measured by the corona current measurement system and the voltage value measured by the high voltage measurement system and calculates the corona loss data. Compared with the prior art, the corona current measurement system of the high-voltage direct current transmission line corona loss measurement system uses split type structure, and the field installation and repairing are simplified; the high-voltage direct current transmission line corona loss measurement system is suitable for a super/extra-high voltage direct current transmission line, and the measurement system is precise in measurement result, strong in anti-electric shock performance, effective and easy to use; the high-voltage direct current transmission line corona loss measurement system is capable of stably running under an extra-high voltage direct current environment and different severe natural environment for a long time; the high-voltage direct current transmission line corona loss measurement system provides an effective and reliable technological way for deeply researching the high-voltage direct current transmission line corona loss.
Description
Technical field
The present invention relates to corona loss measuring system, be specifically related to a kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system.
Background technology
For implementing national energy policy, guarantee power industry comprehensively, coordinate, continuable sound development, State Grid Corporation of China proposes the Major Strategic behave accelerating development alternating current-direct current extra-high voltage grid according to China's national situation.UHV transmission grows up on the basis of EHV transmission, can realize remote, Large Copacity electric energy transmitting, is applicable to interconnection power system.Different from ultra-high voltage AC transmission, the circuit cost of extra-high voltage direct-current transmission is lower, and power attenuation is less, is more suitable for the Large Copacity electric energy conveying of overlength distance.
This wherein transmission line of electricity corona loss research be one of gordian technique of extra-high voltage direct-current project of transmitting and converting electricity, research transmission line of electricity corona loss for transmission line of electricity economy run significant.And ultra-high/extra-high voltage DC power transmission line corona loss measuring method and measuring system research are for UHV transmission line design planning, the research for relation such as research corona loss and electromagnetic environment, meteorological condition, circuit parameter etc. is significant.
The domestic measurement problem for HVDC (High Voltage Direct Current) transmission line corona loss at present, there are the multiple methods such as bridge circuit method, coupled antenna method, wattmeter method at present, but there is operation inconvenience respectively in these methods, there is potential safety hazard, cannot realize long-time on-line measurement under Different climate, be difficult to the problem of the transient waveform realizing Multipoint synchronous measurement and cannot measure corona current.
The external research for UHVDC Transmission Lines corona effect problem is at present all come by the correlation test of corona cage and test line segment.Geography, the weather condition of every country are different, a lot of country carries out to great number tested data the experimental formula that mathematical statistics proposes the corona effect correlation parameter being applicable to country separately, and China starts late due to extra-high voltage, there is no effective corona effect research technique, research work before this mainly concentrates in the simulation calculation of corona effect, the result that conductor selection also just goes out according to external formulae discovery selects wire split form, does not carry out a large amount of corona effect to various wire and verifies.Only China's extra high voltage line conductor selection is instructed to be inappropriate by external experience formulae discovery conductor corona effect correlation parameter.Its reason is: the corona effect correlation computations formulae discovery result difference of (1) various countries is comparatively large, and disunity; (2) various countries' power line conductive line structure and production technology are not quite similar, and the predictor formula of country variant utilizes the test of the transmission pressure of country separately to obtain, and can not be applicable to All Countries; (3) climate difference of various countries is comparatively large, and the corona loss impact of weather on DC power transmission line is very large, and the calculating of corona loss must indicate weather conditions.
Sign in the problems referred to above, China sets up oneself extra-high voltage experiment base gradually in extra-high voltage field.2007, China built up extra-high voltage direct-current corona cage and extra-high-voltage alternating current corona cage and corresponding extra-high voltage experiment line segment respectively in Beijing UHV DC test base station and Wuhan UHV AC Test Base.On the extra-high-voltage alternating current test line segment of State Grid Corporation of China, North China Electric Power University's development and design AC corona loss detection system; System adopts hybrid optical powered electronic formula current transformer to gather corona current signal, achieves the ground survey of extra-high voltage experiment line segment electric current; Adopt extra-high voltage experiment base capacitance type potential transformer (CVT) measuring voltage, and adopt high precision small voltage transformer (VT) to carry out second divided voltage, achieve the measurement accurately and reliably of line voltage distribution; Electric current and voltage signal all adopt Optical Fiber Transmission; Based on virtual instrument technique, adopt high-precision multi-path high-speed synchronous data acquiring card, corona current, the voltage signal of synchronous acquisition extra-high voltage line segment, adopt sinwave parameter Method, calculate the power-factor angle of voltage and current, and then calculate corona loss value.But this system is only for extra-high-voltage alternating current system on the one hand, is not suitable for extra high voltage direct current transmission line; On the other hand because this measuring system sampling rate is low, and the audible noise that corona causes and radio interference etc. are all produce because of pulse current, are substantially in high band, and therefore the source effect Research Significance that causes corona pulse electric current of this system is little.
Along with ultra-high/extra-high voltage DC power transmission line is applied more and more widely, how to design a kind of measurement result accurately, there is strong anti-electric breakdown performance, the efficiently easy-to-use measuring system being suitable for ultra-high/extra-high voltage DC power transmission line corona loss, be those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system, the corona current measuring unit in this measuring system is split-type structural, is easy to in-site installation and maintenance; It is applicable to ultra-high/extra-high voltage DC line, the measurement result of this measuring system accurately, there is strong withstands corona discharge performance and efficiently easy-to-use; And can steady in a long-termly under extra-high voltage direct-current environment and various extreme natural environment condition run; For further investigation hvdc transmission line corona loss provides effectively and reliable technological means.
A kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system, described measuring system comprises corona current measuring unit, high voltage measuring unit and corona loss overall treatment unit;
Described corona current measuring unit adopts distributed frame, and the input side of described corona current measuring unit is arranged in described HVDC (High Voltage Direct Current) transmission line;
The input side of described high voltage measuring unit is connected with HVDC (High Voltage Direct Current) transmission line;
Described corona current measuring unit is all connected with described corona loss overall treatment unit with the outgoing side of described high voltage measuring unit;
Described corona loss overall treatment unit receives and the corona current value that described in computing, corona current measuring system records and the magnitude of voltage that described high voltage measuring system records.
Preferably, described corona current measuring unit comprises the corona current signal sampling module, corona current data measurement module and the supply module that connect successively;
Described corona current signal sampling module installation is in described HVDC (High Voltage Direct Current) transmission line.
Preferably, described corona current signal sampling module comprises and is connected on trap in described HVDC (High Voltage Direct Current) transmission line and sampling resistor sensor successively;
Described corona current data measurement module comprises wave filter, AD converter one and the central control unit one of connecting successively;
Energy control plate and accumulator is provided with in described supply module;
Described sampling resistor sensor and described filters in series;
Described corona current signal sampling module acquires to corona current signal be converted into digital signal by described AD converter one, central control unit one carries out preliminary data process with forms average mode to this digital signal, obtain current average.
Preferably, described supply module and described corona current data measurement module are placed in different metallic cylinder respectively.
Preferably, described high voltage measuring unit comprises the high pressure generator and high voltage measuring module that are connected with described HVDC (High Voltage Direct Current) transmission line respectively.
Preferably, described high voltage measuring module comprises divider, AD converter two and the central control unit two of connecting successively;
The input side of described divider is connected with described HVDC (High Voltage Direct Current) transmission line;
The outgoing side of described divider is connected with described AD converter two;
The voltage analog signal that described divider collects is converted into digital signal by described AD converter two, and described central control unit two carries out forms average treatment to this digital signal, obtains magnitude of voltage.
Preferably, protection circuit one is connected with between described sampling resistor sensor and described wave filter;
Described divider is connected with protection circuit two.
Preferably, described central control unit one and described central control unit two are equipped with USB module, described central control unit one and described central control unit two by the USB module on self respectively with opto-electrical transmitting device one and opto-electrical transmitting device two mutual.
Preferably, described corona loss overall treatment unit comprises host computer and software synthesis processing module;
Described software synthesis processing module is provided with man-machine interface and database;
Described opto-electrical transmitting device one and described opto-electrical transmitting device two are all connected with described corona loss overall treatment unit by optical fiber;
Described corona loss overall treatment unit completes the calculating of corona loss data according to the corona current mean value received and magnitude of voltage, result be presented in described man-machine interface, and data are saved in described database.
Preferably, described AD converter one and AD converter two are integral form high-precision AD converter.
As can be seen from above-mentioned technical scheme, a kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system provided by the invention, comprises corona current measuring unit, high voltage measuring unit and corona loss overall treatment unit; And corona loss overall treatment unit receives and the magnitude of voltage that described in computing, the corona current value that records of corona current measuring system and described high voltage measuring system record complete the calculating of corona loss data.Compared with prior art, HVDC (High Voltage Direct Current) transmission line corona loss measuring system provided by the invention, the corona current measuring unit in this measuring system is split-type structural, is easy to in-site installation and maintenance; It is applicable to ultra-high/extra-high voltage DC line, the measurement result of this measuring system accurately, there is strong anti-electric breakdown performance and efficiently easy-to-use; And can steady in a long-termly under extra-high voltage direct-current environment and various extreme natural environment condition run; For further investigation hvdc transmission line corona loss provides effectively and reliable technological means.
With immediate prior art ratio, technical scheme provided by the invention has following excellent effect:
1, in technical scheme provided by the present invention, in current measurement system, corona current measuring unit, corona loss overall treatment unit and high voltage measuring unit are all separated, and corona current measuring unit adopts split-type design, be easy to in-site installation and maintenance, simplify the I&M operation of measurement mechanism, save time and money cost.
2, in technical scheme provided by the present invention, measuring system comprises corona current measuring unit, high voltage measuring unit and corona loss overall treatment unit; And corona loss overall treatment unit receives and the corona current value that described in computing, corona current measuring system records and the magnitude of voltage that described high voltage measuring system records; Make this measuring system be applicable to ultra-high/extra-high voltage DC line and measurement result accurately, there is strong anti-electric breakdown performance and efficiently easy-to-use; And can steady in a long-termly under extra-high voltage direct-current environment and various extreme natural environment condition run; For further investigation hvdc transmission line corona loss provides effectively and reliable technological means.
3, in technical scheme provided by the present invention, supply module and corona current measurement module, all in metallic cylinder, therefore make electric power system and measuring system can not be subject to electromagnetic interference (EMI) under extra-high voltage environment, and self non-corona discharge; Ensure that the accuracy of measurement, improve the reliability of measuring system simultaneously.
4, in technical scheme provided by the present invention, system adopts integrated AD converter, and its structure is simple, is not vulnerable to extra-high voltage direct-current electromagnetic environmental impact; Improve measuring process reliability and validity.
5, in technical scheme provided by the present invention, the setting of central control unit, the data of magnitude of voltage and the corona current value collected are made to carry out rough handling, therefore volume of transmitted data demand is low, namely the higher low speed transmission system of stability can be adopted, be not subject to the impact of extraneous complex electromagnetic environment, improve reliability and the validity of measuring process.
6, in technical scheme provided by the present invention, the use of man-machine interface and database in corona loss total system, the display of data can be carried out and save the data in database in order to further Treatment Analysis, the result measured is preserved, to the efficiency that data are further processed after improve.
7, technical scheme provided by the invention, is widely used, and has significant Social benefit and economic benefit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, introduce to the accompanying drawing used required in embodiment or description of the prior art briefly below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, 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.
Fig. 1 is the structural representation of a kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system of the present invention.
Fig. 2 is the structural representation of the corona current measuring unit of measuring system of the present invention.
Fig. 3 is the structural representation of the high voltage measuring unit of measuring system of the present invention.
Fig. 4 is the structural representation of the corona loss overall treatment unit of measuring system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system, comprise corona current measuring unit, high voltage measuring unit and corona loss overall treatment unit;
Corona current measuring unit adopts distributed frame, and the input side of corona current measuring unit is arranged in HVDC (High Voltage Direct Current) transmission line;
The input side of high voltage measuring unit is connected with HVDC (High Voltage Direct Current) transmission line;
Corona current measuring unit is all connected with corona loss overall treatment unit with the outgoing side of high voltage measuring unit;
Corona loss overall treatment unit receives and the magnitude of voltage that records of the corona current value that records of computing corona current measuring system and high voltage measuring system.
Wherein, described corona current measuring unit, for measuring the corona current value in ultra-high/extra-high voltage transmission line of electricity, adopts split-type design; High voltage measuring unit is for measuring the wire voltage of ultra-high/extra-high voltage circuit; Corona loss overall treatment unit is used for the corona current value measured by comprehensive corona current measuring unit and the magnitude of voltage measured by high voltage measuring unit, thus carries out computing, completes the measurement of line corona loss.
As shown in Figure 2, corona current measuring unit comprises the corona current signal sampling module, corona current data measurement module and the supply module that connect successively;
Corona current signal sampling module installation is in HVDC (High Voltage Direct Current) transmission line.
Wherein, corona current signal sampling module comprises and is connected on trap in HVDC (High Voltage Direct Current) transmission line and sampling resistor sensor successively;
Corona current data measurement module comprises wave filter, AD converter one and the central control unit one of connecting successively;
Energy control plate and accumulator is provided with in supply module; Described high-pressure side supply module adopts large-capacity battery; Adopt the split type design with high-pressure side corona current signal sampling module and high-pressure side corona current data measurement module in design, be easy to install and change, modular design is easier to commercialization.High-pressure side corona current signal sampling module is connected to the signal input connector of high-pressure side corona current data measurement module by Shielded Twisted Pair; The power supply of high-pressure side supply module exports the power supply input adapter being connected to high-pressure side corona current data measurement module; The fibre-optical splice junction chamber infrared optical fiber of high-pressure side corona current data measurement module, is connected with corona loss overall treatment unit by outdoor optical fiber.
Sampling resistor sensor and filters in series; Sampling resistor sensor series enters transmission line of electricity, gathers corona current signal; Trap is connected on sampling resistor sensor front end, after filtering circuit is connected on sampling resistor sensor, jointly completes the filtering work of unnecessary interference; Protection circuit can protection system can not be damaged by instantaneous pressure.
Corona current signal sampling module acquires to corona current signal be converted into digital signal by AD converter one, central control unit one carries out preliminary data process with forms average mode to this digital signal, obtain current average.
Supply module and corona current data measurement module are placed in different metallic cylinder respectively.
As shown in Figure 3, high voltage measuring unit comprises the high pressure generator and high voltage measuring module that are connected with HVDC (High Voltage Direct Current) transmission line respectively.High voltage measuring unit can adopt mains-supplied, is simple and easy to use.
High voltage measuring module comprises divider, AD converter two and the central control unit two of connecting successively;
Described high voltage measuring unit adopts divider pattern, and divider is input as the electric pressure input on circuit, and divider exports and connects sample circuit, and protection circuit ensure that sample circuit can not damage because of the high voltage pulse of burst,
The input side of divider is connected with HVDC (High Voltage Direct Current) transmission line;
The outgoing side of divider is connected with AD converter two;
The voltage analog signal that divider collects by AD converter two is converted into digital signal, and central control unit two carries out forms average treatment to this digital signal, obtains magnitude of voltage.
Wherein, protection circuit one is connected with between sampling resistor sensor and wave filter;
Divider is connected with protection circuit two.
Central control unit one and central control unit two are equipped with USB module, central control unit one and central control unit two by the USB module on self respectively with opto-electrical transmitting device one and opto-electrical transmitting device two mutual.
Wherein, the data that opto-electrical transmitting device transmits be forms average after data, the raw data that data volume gathers much smaller than AD converter, and initial comparatively high sampling rate can also ensure data precision.And the average length of forms can be modified according to accuracy requirement and corona loss system, adjustable precision and transmitted data amount size.
As shown in Figure 4, corona loss overall treatment unit comprises host computer and software synthesis processing module;
Software synthesis processing module is provided with man-machine interface and database;
Opto-electrical transmitting device one and opto-electrical transmitting device two are all connected with corona loss overall treatment unit by optical fiber;
Corona loss overall treatment unit completes the calculating of corona loss data according to the corona current mean value received and magnitude of voltage, result is presented in man-machine interface, and data are saved in database.
Host computer is connected by the opto-electrical transmitting device two of USB module and high voltage measuring unit and corona current measuring unit opto-electrical transmitting device one, and the mainly reception of digital quantity, receives high voltage measuring data and corona current average data.Software synthesis disposal system is mainly to the voltage data of reception and the further process of current data, complete the calculating of corona loss data, and there is friendly man-machine interface, the display of data can be carried out and save the data in database in order to further Treatment Analysis.
Wherein, AD converter one and AD converter two are integral form high-precision AD converter.
Above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; and these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, it is all being applied within the claims of the present invention awaited the reply.
Claims (10)
1. a HVDC (High Voltage Direct Current) transmission line corona loss measuring system, is characterized in that, described measuring system comprises corona current measuring unit, high voltage measuring unit and corona loss overall treatment unit;
Described corona current measuring unit adopts distributed frame, and the input side of described corona current measuring unit is arranged in described HVDC (High Voltage Direct Current) transmission line;
The input side of described high voltage measuring unit is connected with HVDC (High Voltage Direct Current) transmission line;
Described corona current measuring unit is all connected with described corona loss overall treatment unit with the outgoing side of described high voltage measuring unit;
Described corona loss overall treatment unit receives and the corona current value that described in computing, corona current measuring unit records and the magnitude of voltage that described high voltage measuring unit records.
2. measuring system as claimed in claim 1, it is characterized in that, described corona current measuring unit comprises the corona current signal sampling module, corona current data measurement module and the supply module that connect successively;
Described corona current signal sampling module installation is in described HVDC (High Voltage Direct Current) transmission line.
3. measuring system as claimed in claim 2, is characterized in that, described corona current signal sampling module comprises and is connected on trap in described HVDC (High Voltage Direct Current) transmission line and sampling resistor sensor successively;
Described corona current data measurement module comprises wave filter, AD converter one and the central control unit one of connecting successively;
Energy control plate and accumulator is provided with in described supply module;
Described sampling resistor sensor and described filters in series;
Described corona current signal sampling module acquires to corona current signal be converted into digital signal by described AD converter one, central control unit one carries out preliminary data process with forms average mode to this digital signal, obtain current average.
4. measuring system as claimed in claim 3, it is characterized in that, described supply module and described corona current data measurement module are placed in different metallic cylinder respectively.
5. the measuring system as described in claim 3 or 4, is characterized in that, described high voltage measuring unit comprises the high pressure generator and high voltage measuring module that are connected with described HVDC (High Voltage Direct Current) transmission line respectively.
6. measuring system as claimed in claim 5, it is characterized in that, described high voltage measuring module comprises divider, AD converter two and the central control unit two of connecting successively;
The input side of described divider is connected with described HVDC (High Voltage Direct Current) transmission line;
The outgoing side of described divider is connected with described AD converter two;
The voltage analog signal that described divider collects is converted into digital signal by described AD converter two, and described central control unit two carries out forms average treatment to this digital signal, obtains magnitude of voltage.
7. measuring system as claimed in claim 6, is characterized in that,
Protection circuit one is connected with between described sampling resistor sensor and described wave filter;
Described divider is connected with protection circuit two.
8. measuring system as claimed in claims 6 or 7, is characterized in that,
Described central control unit one and described central control unit two are equipped with USB module, described central control unit one and described central control unit two by the USB module on self respectively with opto-electrical transmitting device one and opto-electrical transmitting device two mutual.
9. measuring system as claimed in claim 8, is characterized in that,
Described corona loss overall treatment unit comprises host computer and software synthesis processing module;
Described software synthesis processing module is provided with man-machine interface and database;
Described opto-electrical transmitting device one and described opto-electrical transmitting device two are all connected with described corona loss overall treatment unit by optical fiber;
Described corona loss overall treatment unit completes the calculating of corona loss data according to the corona current mean value received and magnitude of voltage, result be presented in described man-machine interface, and data are saved in described database.
10. the measuring system as described in any one of claim 6 to 9, is characterized in that, described AD converter one and AD converter two are integral form high-precision AD converter.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572510A (en) * | 2016-01-23 | 2016-05-11 | 清华大学 | DC power transmission line corona loss test method based on corona cage |
| CN106405217A (en) * | 2015-07-30 | 2017-02-15 | Ls 产电株式会社 | Power loss measuring system for measuring power loss at harmonic filter included in high voltage direct current (hvdc) transmission system, and power loss measuring method thereof |
| CN107255753A (en) * | 2017-06-15 | 2017-10-17 | 中国电力科学研究院 | A kind of hvdc transmission line corona loss method for transformation and its realize system |
| CN108646076A (en) * | 2018-04-27 | 2018-10-12 | 国家电网公司 | Double resistance multi-channel type high voltage direct current photoelectricity flow measuring systems and method |
| CN113945765A (en) * | 2021-11-02 | 2022-01-18 | 国网福建省电力有限公司检修分公司 | Corona loss evaluation method for extra-high voltage alternating current transmission line |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134163Y (en) * | 2007-12-19 | 2008-10-15 | 中国电力科学研究院 | Corona current measurement mechanism |
| CN101852825A (en) * | 2010-05-21 | 2010-10-06 | 南方电网技术研究中心 | Wideband online measuring system for corona current of high-voltage transmission line |
| CN102175923A (en) * | 2011-01-30 | 2011-09-07 | 华北电力大学（保定） | Transmission line dynamic loss measurement system and method |
| CN102608394A (en) * | 2012-04-01 | 2012-07-25 | 华北电力大学 | Line corona current measurement system and method |
| CN102818928A (en) * | 2011-12-16 | 2012-12-12 | 清华大学 | Current probe-based on-line measuring system for high-frequency corona pulse current on high-voltage line |
| CN103018542A (en) * | 2012-11-29 | 2013-04-03 | 中国电力科学研究院 | Corona current collecting card based on USB (universal serial bus) bus |
| CN103116056A (en) * | 2012-08-07 | 2013-05-22 | 中国电力科学研究院 | High-voltage direct current broadband domain corona current measurement system |
| CN202948071U (en) * | 2012-12-12 | 2013-05-22 | 中国电力科学研究院 | Corona loss test system for linear conductor |
| CN204462246U (en) * | 2015-03-27 | 2015-07-08 | 国家电网公司 | A kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system |
-
2015
- 2015-03-27 CN CN201510142121.4A patent/CN104698265A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134163Y (en) * | 2007-12-19 | 2008-10-15 | 中国电力科学研究院 | Corona current measurement mechanism |
| CN101852825A (en) * | 2010-05-21 | 2010-10-06 | 南方电网技术研究中心 | Wideband online measuring system for corona current of high-voltage transmission line |
| CN102175923A (en) * | 2011-01-30 | 2011-09-07 | 华北电力大学（保定） | Transmission line dynamic loss measurement system and method |
| CN102818928A (en) * | 2011-12-16 | 2012-12-12 | 清华大学 | Current probe-based on-line measuring system for high-frequency corona pulse current on high-voltage line |
| CN102608394A (en) * | 2012-04-01 | 2012-07-25 | 华北电力大学 | Line corona current measurement system and method |
| CN103116056A (en) * | 2012-08-07 | 2013-05-22 | 中国电力科学研究院 | High-voltage direct current broadband domain corona current measurement system |
| CN103018542A (en) * | 2012-11-29 | 2013-04-03 | 中国电力科学研究院 | Corona current collecting card based on USB (universal serial bus) bus |
| CN202948071U (en) * | 2012-12-12 | 2013-05-22 | 中国电力科学研究院 | Corona loss test system for linear conductor |
| CN204462246U (en) * | 2015-03-27 | 2015-07-08 | 国家电网公司 | A kind of HVDC (High Voltage Direct Current) transmission line corona loss measuring system |
Non-Patent Citations (1)
| Title |
|---|
| 李敏等: "高海拔地区直流输电线路的电晕损耗", 《高电压技术》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405217A (en) * | 2015-07-30 | 2017-02-15 | Ls 产电株式会社 | Power loss measuring system for measuring power loss at harmonic filter included in high voltage direct current (hvdc) transmission system, and power loss measuring method thereof |
| CN106405217B (en) * | 2015-07-30 | 2019-04-30 | Ls 产电株式会社 | The power loss measuring system and method for harmonic filter in HVDC transmission system |
| US10345393B2 (en) | 2015-07-30 | 2019-07-09 | Lsis Co., Ltd. | Power loss measuring system for measuring power loss at harmonic filter included in high voltage direct current (HVDC) transmission system, and power loss measuring method thereof |
| CN105572510A (en) * | 2016-01-23 | 2016-05-11 | 清华大学 | DC power transmission line corona loss test method based on corona cage |
| CN105572510B (en) * | 2016-01-23 | 2018-04-03 | 清华大学 | A kind of DC power transmission line corona loss method of testing based on corona cage |
| CN107255753A (en) * | 2017-06-15 | 2017-10-17 | 中国电力科学研究院 | A kind of hvdc transmission line corona loss method for transformation and its realize system |
| CN108646076A (en) * | 2018-04-27 | 2018-10-12 | 国家电网公司 | Double resistance multi-channel type high voltage direct current photoelectricity flow measuring systems and method |
| CN113945765A (en) * | 2021-11-02 | 2022-01-18 | 国网福建省电力有限公司检修分公司 | Corona loss evaluation method for extra-high voltage alternating current transmission line |
| CN113945765B (en) * | 2021-11-02 | 2023-09-19 | 国网福建省电力有限公司检修分公司 | Corona loss assessment method for extra-high voltage alternating current transmission line |
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