CN205581192U - High pressure current conversion station direct current field transient voltage monitoring devices - Google Patents
High pressure current conversion station direct current field transient voltage monitoring devices Download PDFInfo
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- CN205581192U CN205581192U CN201620364161.3U CN201620364161U CN205581192U CN 205581192 U CN205581192 U CN 205581192U CN 201620364161 U CN201620364161 U CN 201620364161U CN 205581192 U CN205581192 U CN 205581192U
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Abstract
The utility model discloses a high pressure current conversion station direct current field transient voltage monitoring devices, including transient state voltage measurement unit, data transfer unit and data storage display element, connect through wireless communication module between transient state voltage measurement unit and the data transfer unit, connect through the ethernet between data transfer unit and the data storage display element, transient state voltage measurement unit includes that electrode line, the many post insulators, electric -field sensor and the field data that install in electrode line below perpendicularly gather dispensing device, field data gathers dispensing device and installs in the cavity bottom of electrode line and the formation of duo gen post insulators, and the electric -field sensor is installed on data acquisition dispensing device. By adopting the above structure, the utility model, need not the operation that has a power failure, insulating degree is high, solves once incline transient voltage accuracy, safety monitoring's technical problem of high -pressure current conversion station direct current field.
Description
Technical field
This utility model relates to power domain, in particular it relates to high-voltage convertor station DC fields transient voltage monitoring device.
Background technology
High-voltage convertor station transmission capacity is big, if installing transient voltage monitoring device and stopping transport and will result in huge economic loss.The electric pressure of domestic high-voltage convertor station, at more than 500kV, connects if high and low current potential equipment exists, is likely to result in insulation fault hidden danger, affects the safe operation of current conversion station.The transient voltage kind of high-voltage convertor station is many, and time domain and the frequency domain span of all kinds of transient voltages exist larger difference, from hundreds of milliseconds to Microsecond grade, it is desirable to the bandwidth range of monitoring device at least covers 20Hz ~ 40MHz, acquisition rate the soonest up to 40MS/s.High-voltage commutation stands in pole bus and the divider of neutral bus layout, and its 3dB upper cut-off frequency is only 10kHz, and acquisition rate is only 6.4kHz, it is impossible to meet the monitoring requirements of high-voltage convertor station DC fields transient voltage.
In patent " optical fiber type voltage measurement method and measurement apparatus thereof " (200810231873.8) it is proposed that a kind of optical fiber type voltage measurement method measuring various transient voltage in electric power network system and device thereof, metal sensing pole plate is placed on tested high-pressure conductor surface, and by optical fiber transmission sensing pole plate capacitance partial pressure numerical value, and then high potential transient voltage is measured.The method need to arrange sensing pole plate at high potential, it is necessary to power failure operation.Despite the use of the measurement result of high potential is transmitted to earth potential by the optical fiber of insulant, but to realize the longtime running of on-line monitoring mode, it is necessary to customization optical fiber insulator provides creep distance.
Utility model content
This utility model overcomes the deficiencies in the prior art, it is provided that high-voltage convertor station DC fields transient voltage monitoring device, it is not necessary to power failure operation, and insulation degree is high, and solution high-voltage convertor station DC fields primary side transient voltage is accurate, the technical problem of safety monitoring.
The technical scheme in the invention for solving the above technical problem is: high-voltage convertor station DC fields transient voltage monitoring device, including transient voltage measuring unit, data relay unit and data storage and display unit, it is attached by wireless communication module between described transient voltage measuring unit and data relay unit, it is attached by Ethernet between data relay unit and data storage and display unit, described transient voltage measuring unit includes electrode wires, it is vertically mounted on many support insulators below electrode wires, electric-field sensor and on-site data gathering dispensing device, described on-site data gathering dispensing device is arranged on electrode wires and the cavity bottom of Duo Gen support insulator formation, electric-field sensor is arranged on data acquisition dispensing device.This device realizes the real-time monitoring to transient voltage by the electric-field sensor being distributed in transient voltage measuring unit, and the transient voltage information collected is passed to on-site data gathering dispensing device collect carry out processing and utilizing wireless transmission method to be sent to data relay unit by on-site data gathering dispensing device information, data relay unit passes to the server data library storage in data storage and display unit again by Ethernet after receiving data, the application interface in data storage and display unit alerts and prompting simultaneously.Electric-field sensor is arranged on the end current potential of high-voltage convertor station space electric field and carries out the measurement of high pressure primary side transient voltage, without power failure operation, and electric-field sensor is from as isolation material, measuring method has the feature of " all insulation ", do not result in insulation safety hidden danger, it is achieved that the on-line monitoring to high pressure primary side transient voltage.This device is realized data in-site collecting by electric-field sensor, it is to avoid the decay of measurement data long range propagation in current conversion station and distortion；Wireless data transmission technology is used, it is to avoid in current conversion station, carry out extensive civil engineering to lay the telecommunication optical fiber between harvester and control room between transient voltage measuring unit and data relay unit.
Preferably, described data relay unit includes that interconnective terminal and wireless data receive device.Wireless data receives device and utilizes wireless communication module receive the high pressure primary side transient voltage information that transmits of transient voltage measuring unit and pass to terminal and store, and is passed information to the data storage and display unit of distant place by Ethernet.Wireless data therein receives device and terminal all uses conventional device to realize, and improvement of the present utility model is connection between the individual terminals.
Preferably, described data storage and display unit includes server.The data base of server comprehensively monitors for storing all high pressure primary side transient voltage information collected, if there are abnormal conditions, alerting and pointing out on the data storage and display unit i.e. interface of server, the server at this uses existing preferred server all can realize.
Preferably, described electric-field sensor is optical electric field sensor.Optical electric field sensor response speed reaches ns level, bandwidth the soonest and effectively covers 20Hz ~ 100MHz, it is possible to meet response speed and bandwidth requirement that transient voltage is measured.
Preferably, described on-site data gathering dispensing device includes that data acquisition unit, wave recording device and wireless communication module, wave recording device therein and wireless communication module are all connected with data acquisition unit.
To sum up, the beneficial effects of the utility model are:
1, this utility model provides a kind of all insulation, wideband limited covering 20Hz ~ 50MHz, sample rate to reach as high as the current conversion station DC fields transient voltage monitoring method of 50MS/s, and solution high-voltage convertor station DC fields transient voltage is accurate, the technical problem of safety monitoring.
2, in this programme, optical electric field sensor is measured transient voltage data acquisition on-site data gathering dispensing device in-site collecting data and is first passed to control room information terminal by wireless transmission method, pass information to central station by control room again store, it is to avoid the decay of measurement data long range propagation in current conversion station and distortion；Use wireless data transmission technology, it is to avoid in current conversion station, carry out extensive civil engineering to lay the telecommunication optical fiber between harvester and control room.
Accompanying drawing explanation
Fig. 1 is the structural representation of transient voltage measuring unit in this utility model.
Labelling and corresponding parts title in accompanying drawing: 1, electrode wires；2, space electric field；3, support insulator；4, electric-field sensor；5, on-site data gathering dispensing device.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is made detailed description further, but embodiment of the present utility model is not limited to this.
Embodiment 1:
As shown in Figure 1, this utility model includes transient voltage measuring unit, data relay unit and data storage and display unit, it is attached by wireless communication module between described transient voltage measuring unit and data relay unit, it is attached by Ethernet between data relay unit and data storage and display unit, described transient voltage measuring unit includes electrode wires 1, it is vertically mounted on many support insulators 3 below electrode wires, electric-field sensor 4 and on-site data gathering dispensing device 5, described on-site data gathering dispensing device is arranged on electrode wires and the cavity bottom of Duo Gen support insulator formation, electric-field sensor is arranged on data acquisition dispensing device.This device realizes the real-time monitoring to transient voltage by the electric-field sensor being distributed in transient voltage measuring unit, and the transient voltage information collected is passed to on-site data gathering dispensing device collect carry out processing and utilizing wireless transmission method to be sent to data relay unit by on-site data gathering dispensing device information, data relay unit passes to the server data library storage in data storage and display unit again by Ethernet after receiving data, the application interface in data storage and display unit alerts and prompting simultaneously.Electric-field sensor is arranged on the end current potential of high-voltage convertor station space electric field 2 and carries out the measurement of high pressure primary side transient voltage, without power failure operation, and electric-field sensor is from as isolation material, measuring method has the feature of " all insulation ", do not result in insulation safety hidden danger, it is achieved that the on-line monitoring to high pressure primary side transient voltage.This device is realized data in-site collecting by electric-field sensor, it is to avoid the decay of measurement data long range propagation in current conversion station and distortion；Wireless data transmission technology is used, it is to avoid in current conversion station, carry out extensive civil engineering to lay the telecommunication optical fiber between harvester and control room between transient voltage measuring unit and data relay unit.
Embodiment 2:
The present embodiment is preferably as follows on the basis of embodiment 1: data relay unit includes that interconnective terminal and wireless data receive device.Wireless data receives device and utilizes wireless communication module receive the high pressure primary side transient voltage information that transmits of transient voltage measuring unit and pass to terminal and store, and is passed information to the data storage and display unit of distant place by Ethernet.Wireless data therein receives device and terminal all uses conventional device to realize, and improvement of the present utility model is connection between the individual terminals.
Data storage and display unit includes server.The data base of server comprehensively monitors for storing all high pressure primary side transient voltage information collected, if there are abnormal conditions, alerting and pointing out on the data storage and display unit i.e. interface of server, the server at this uses existing preferred server all can realize.
Electric-field sensor is optical electric field sensor.Optical electric field sensor response speed reaches ns level, bandwidth the soonest and effectively covers 20Hz ~ 100MHz, it is possible to meet response speed and bandwidth requirement that transient voltage is measured.
On-site data gathering dispensing device includes that data acquisition unit, wave recording device and wireless communication module, wave recording device therein and wireless communication module are all connected with data acquisition unit.Data acquisition unit therein is for gathering the high pressure primary side transient voltage information that optical electric field sensor collects, the information collected is analyzed comparing by wave recording device, break down (such as line short, ground connection etc. in power system, and system overvoltage, load unbalanced etc.) time, automatically, various electric parameters (the main number amount of the forward and backward process of the record electricity system failure exactly, such as on off state change, analog quantity, mainly voltage, current values) situation of change, and these situations are sent by wireless communication module.
Embodiment 3:
The present embodiment is preferably as follows on the basis of above-described embodiment: uses high-voltage convertor station DC fields transient voltage monitoring method to measure, comprises the steps:
Step A) space electric field that formed transient voltage by the full optical electric field sensor being arranged in high-voltage convertor station DC fields measures in real time, and on-site data gathering dispensing device carries out gathering of data and with the sample rate of 40MS/s, the analogue signal of spatial electronic field measurement is converted into digital signal and is stored in caching；
Step B) the analysis module of on-site data gathering dispensing device is data cached by transferring, electric field measurement result is analyzed in real time, once electric field measurement amplitude exceedes set threshold values, i.e. it is considered as triggering 1 time, and the data of 0.4s are taken out from caching and are sent to wireless communication module after triggering 0.1s before the moment and triggering the moment, on-site data gathering dispensing device is again introduced into " state to be triggered ", waits that transient voltage triggers next time；
Step C) after the wireless communication module of on-site data gathering dispensing device receives the measurement data of triggering, utilize antenna to be sent；
Step D) control room wireless data receive device antenna receive measurement data after, be converted into standard data format, and be uploaded to central station by Intranet；
Step E) central station will be converted into transient voltage waveform by the Transient Electric Field measurement result of inside and outside transmission, and store to server database according to certain classifying rules, simultaneously in the alarm of central station application interface and prompting.
This method is capable of the monitoring to high pressure primary side transient voltage and measurement, monitoring for the fast transient voltage of high-voltage convertor station μ that may be present s, sensing pole plate need to be arranged at high potential with conventional measuring method, difference must be operated by power failure operation, this method uses and uses optical electric field sensor to measure the space electric field that transient voltage produces at electronegative potential, and then the measuring method of inverting transient voltage, being arranged in electronegative potential owing to measuring optical electric field sensor, the installation of measurement apparatus is without having a power failure；Optical electric field sensor and high-voltage conducting wires maintain enough air gap distance, and optical electric field sensor is from as isolation material, and measuring method has the feature of " all insulation ", does not results in insulation safety hidden danger.Additionally, optical electric field sensor response speed reaches ns level, bandwidth the soonest and effectively covers 20Hz ~ 100MHz, disclosure satisfy that response speed and bandwidth requirement that transient voltage measures, the bandwidth range of optical electric field sensor at least covers 20Hz ~ 40MHz, acquisition rate the soonest up to 40MS/s, realize the monitoring of the fast transient voltage of μ s that may be present to high-voltage convertor station, meet the monitoring requirements of high-voltage convertor station DC fields transient voltage.
In this method, optical electric field sensor is measured transient voltage data acquisition on-site data gathering dispensing device in-site collecting data and is first passed to control room information terminal by wireless transmission method, pass information to central station by control room again store, it is to avoid the decay of measurement data long range propagation in current conversion station and distortion；Use wireless data transmission technology, it is to avoid in current conversion station, carry out extensive civil engineering to lay the telecommunication optical fiber between harvester and control room.
This utility model provides a kind of all insulation, wideband limited covering 20Hz ~ 50MHz, sample rate to reach as high as the current conversion station DC fields transient voltage monitoring method of 50MS/s, and solution high-voltage convertor station DC fields transient voltage is accurate, the technical problem of safety monitoring.
Step A) in on-site data gathering dispensing device the analogue signal of spatial electronic field measurement is converted into the sample frequency scope of digital signal at 40MS/s-50MS/s.
Step A) in the bandwidth effective coverage range of full optical electric field sensor between 20Hz ~ 100MHz.
To better meet the monitoring requirements of high-voltage convertor station DC fields transient voltage, reach bandwidth range and at least cover 20Hz ~ 40MHz, the fastest requirement up to 40MS/s of acquisition rate.
The above; it it is only preferred embodiment of the present utility model; not this utility model is done any pro forma restriction, every according to technical spirit of the present utility model, above example is made any simple modification, equivalent variations, within each falling within protection domain of the present utility model.
Claims (5)
1. high-voltage convertor station DC fields transient voltage monitoring device, it is characterized in that, including transient voltage measuring unit, data relay unit and data storage and display unit, it is attached by wireless communication module between described transient voltage measuring unit and data relay unit, it is attached by Ethernet between data relay unit and data storage and display unit, described transient voltage measuring unit includes electrode wires, it is vertically mounted on many support insulators below electrode wires, electric-field sensor and on-site data gathering dispensing device, described on-site data gathering dispensing device is arranged on electrode wires and the cavity bottom of Duo Gen support insulator formation, electric-field sensor is arranged on data acquisition dispensing device.
High-voltage convertor station DC fields transient voltage monitoring device the most according to claim 1, it is characterised in that described data relay unit includes that interconnective terminal and wireless data receive device.
High-voltage convertor station DC fields transient voltage monitoring device the most according to claim 1 and 2, it is characterised in that described data storage and display unit includes server.
High-voltage convertor station DC fields transient voltage monitoring device the most according to claim 1 and 2, it is characterised in that described electric-field sensor is optical electric field sensor.
High-voltage convertor station DC fields transient voltage monitoring device the most according to claim 1, it is characterized in that, described on-site data gathering dispensing device includes that data acquisition unit, wave recording device and wireless communication module, wave recording device therein and wireless communication module are all connected with data acquisition unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620364161.3U CN205581192U (en) | 2016-04-27 | 2016-04-27 | High pressure current conversion station direct current field transient voltage monitoring devices |
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| CN201620364161.3U CN205581192U (en) | 2016-04-27 | 2016-04-27 | High pressure current conversion station direct current field transient voltage monitoring devices |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759105A (en) * | 2016-04-27 | 2016-07-13 | 国网四川省电力公司电力科学研究院 | Transient voltage monitoring device and method for direct-current field of high-voltage convertor station |
| CN109709382A (en) * | 2019-03-13 | 2019-05-03 | 清华四川能源互联网研究院 | A kind of fixed substation's transient overvoltage real-time monitoring device |
| CN111521885A (en) * | 2020-02-25 | 2020-08-11 | 天津大学 | Non-interference electrical equipment transient electric field distribution measuring method |
-
2016
- 2016-04-27 CN CN201620364161.3U patent/CN205581192U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759105A (en) * | 2016-04-27 | 2016-07-13 | 国网四川省电力公司电力科学研究院 | Transient voltage monitoring device and method for direct-current field of high-voltage convertor station |
| CN109709382A (en) * | 2019-03-13 | 2019-05-03 | 清华四川能源互联网研究院 | A kind of fixed substation's transient overvoltage real-time monitoring device |
| CN111521885A (en) * | 2020-02-25 | 2020-08-11 | 天津大学 | Non-interference electrical equipment transient electric field distribution measuring method |
| CN111521885B (en) * | 2020-02-25 | 2021-12-07 | 天津大学 | Non-interference electrical equipment transient electric field distribution measuring method |
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