CN203491785U - Direct-current monitoring system based on PMU - Google Patents

Direct-current monitoring system based on PMU Download PDF

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Publication number
CN203491785U
CN203491785U CN201320264957.8U CN201320264957U CN203491785U CN 203491785 U CN203491785 U CN 203491785U CN 201320264957 U CN201320264957 U CN 201320264957U CN 203491785 U CN203491785 U CN 203491785U
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China
Prior art keywords
monitoring
direct current
pmu
synchronous phasor
phasor measuring
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CN201320264957.8U
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Chinese (zh)
Inventor
崔勇
韩伟福
郭强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
East China Power Test and Research Institute Co Ltd
Original Assignee
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
East China Power Test and Research Institute Co Ltd
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Application filed by State Grid Corp of China SGCC, Shanghai Municipal Electric Power Co, East China Power Test and Research Institute Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201320264957.8U priority Critical patent/CN203491785U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector

Abstract

The utility model relates to a direct-current monitoring system based on a PMU (phasor measurement unit). The system is connected with a DC converter station. The direct-current monitoring system comprises phasor measurement units, GPS devices, and a DC monitoring master station. An end of the phasor measurement unit is connected with the DC converter station, and the other end is connected with the DC monitoring master station in a communication manner. The GPS devices are connected with the phasor measurement units. Compared with the prior art, the system is characterized in that the system can perform unified monitoring, and monitoring is comprehensive and high in precision.

Description

A kind of DC System Monitoring based on PMU
Technical field
The utility model relates to a kind of power monitoring equipment, especially relates to a kind of DC System Monitoring based on PMU.
Background technology
Along with the development of electric power system, high voltage direct current becomes the major part that electrical network is entered electric weight, and the safe operation of direct current system is increasing to the importance of electrical network.At present, in the EMS of Shanghai Electric Power control centre system, only monitored a small amount of information such as active power, reactive power of DC converter station outlet, do not monitor other important informations of direct current system operation, make dispatcher cannot fully understand DC operation situation and characteristic, restricted the scheduling controlling ability to multi-infeed DC electrical network.After direct current system breaks down, DC operation parameter is changed oscillograph in current conversion station and event is carried out record, these record deposits in each current conversion station scatteredly, can not be sent to rapidly control centre, control centre can only understand fault message passively, because signal is not stamped sign unified time, therefore can only carry out simple analysis to the fault of single current conversion station, can not carry out multianalysis to whole ac and dc systems response, affect the degree of depth and the precision of accident analysis.And cannot realize the power modulation function of direct current, can not give full play to direct current and control improving the advantage of grid stability fast.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of DC System Monitoring based on PMU that comprehensive precision is high of unifying to monitor, monitor in order to overcome the defect of above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of DC System Monitoring based on PMU, be connected with DC converter station, described DC System Monitoring comprises synchronous phasor measuring device, GPS device and direct current monitoring main website, described synchronous phasor measuring device one end is connected with DC converter station, the other end is connected with direct current monitoring master station communication by network, and described GPS device is connected with synchronous phasor measuring device.
Described direct current monitoring main website comprises data acquisition unit, processor, display, memory and alarm, described processor is connection data collector, display, memory and alarm respectively, and described data acquisition unit is connected with synchronous phasor measuring device by network.
Described synchronous phasor measuring device is provided with a plurality of, respectively connection corresponding to a plurality of DC converter station.
Compared with prior art, the utlity model has following advantage:
1, the utility model carries out data acquisition by synchronous phasor measuring device (PMU), voltage, electric current and the important switch protection signal of energy the whole network synchronous acquisition unit and circuit, and monitoring is comprehensive and precision is high;
2, the utility model is set unified time tag by GPS device to a plurality of synchronous phasor measuring devices, can unify monitoring to direct current system;
3, the utility model can be realized the real-time monitoring of direct current, gives full play to direct current and controls improving the advantage of grid stability fast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.The present embodiment be take technical solutions of the utility model and is implemented as prerequisite, provided detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
As shown in Figure 1, a kind of DC System Monitoring based on PMU, be connected with DC converter station, described DC System Monitoring comprises synchronous phasor measuring device (PMU) 1, GPS device 2 and direct current monitoring main website 3, described synchronous phasor measuring device 1 one end is connected with DC converter station, the other end is by network and 3 communication connections of direct current monitoring main website, and described GPS device 2 is connected with synchronous phasor measuring device 1.Described synchronous phasor measuring device 1 is provided with a plurality of, respectively connection corresponding to a plurality of DC converter station.
Described direct current monitoring main website 3 comprises data acquisition unit, processor, display, memory and alarm, described processor is connection data collector, display, memory and alarm respectively, and described data acquisition unit is connected with synchronous phasor measuring device by network.
In each current conversion station of electrical network, configure PMU device, select the key message of direct current system operation to monitor and stamp unified time tag, comprise position of the switch information, DC operation parameter and protection actuating signal etc.Wherein position of the switch information gathering DC fields switch, alternating-current switch, alternating current filter switch etc.; DC operation parameter acquisition direct voltage, direct current, extinguish angle, Trigger Angle, active power, reactive power, tap joint position etc.; Protection actuating signal gathers fault message and protection response message.
These information are sent to direct current monitoring main website 3 through telecommunication, direct current monitoring main website 3 effectively integrates and shows these information, for dispatcher, fully understand direct current real time execution situation on the one hand, the unusual condition on the other hand direct current being occurred carries out early warning, such as the locking of direct current generation commutation failure direct current, deposit these data in database simultaneously and carry out record.
In addition, direct current monitoring main website 3 need to derive data record, for emulation personnel, carries out off-line analysis and accident inversion, and part signal can also carry out power modulation to direct current as the input signal of HVDC supplementary control, improves dynamic performance.

Claims (3)

1. the DC System Monitoring based on PMU, be connected with DC converter station, it is characterized in that, described DC System Monitoring comprises synchronous phasor measuring device, GPS device and direct current monitoring main website, described synchronous phasor measuring device one end is connected with DC converter station, the other end is connected with direct current monitoring master station communication by network, and described GPS device is connected with synchronous phasor measuring device.
2. a kind of DC System Monitoring based on PMU according to claim 1, it is characterized in that, described direct current monitoring main website comprises data acquisition unit, processor, display, memory and alarm, described processor is connection data collector, display, memory and alarm respectively, and described data acquisition unit is connected with synchronous phasor measuring device by network.
3. a kind of DC System Monitoring based on PMU according to claim 1, is characterized in that, described synchronous phasor measuring device is provided with a plurality of, respectively connection corresponding to a plurality of DC converter station.
CN201320264957.8U 2013-05-15 2013-05-15 Direct-current monitoring system based on PMU Active CN203491785U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320264957.8U CN203491785U (en) 2013-05-15 2013-05-15 Direct-current monitoring system based on PMU

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320264957.8U CN203491785U (en) 2013-05-15 2013-05-15 Direct-current monitoring system based on PMU

Publications (1)

Publication Number Publication Date
CN203491785U true CN203491785U (en) 2014-03-19

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CN201320264957.8U Active CN203491785U (en) 2013-05-15 2013-05-15 Direct-current monitoring system based on PMU

Country Status (1)

Country Link
CN (1) CN203491785U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107786001A (en) * 2017-10-31 2018-03-09 河海大学 A kind of monitoring abnormal state analyzer for DC converter station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107786001A (en) * 2017-10-31 2018-03-09 河海大学 A kind of monitoring abnormal state analyzer for DC converter station
CN107786001B (en) * 2017-10-31 2020-09-29 河海大学 Abnormal state monitoring analyzer for direct current converter station

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