CN104897973A - Single-phase distribution transformer loss online monitoring apparatus - Google Patents
Single-phase distribution transformer loss online monitoring apparatus Download PDFInfo
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- CN104897973A CN104897973A CN201510333862.0A CN201510333862A CN104897973A CN 104897973 A CN104897973 A CN 104897973A CN 201510333862 A CN201510333862 A CN 201510333862A CN 104897973 A CN104897973 A CN 104897973A
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Abstract
The invention provides a single-phase distribution transformer loss online monitoring apparatus and belongs to the field of power distribution units. The single-phase distribution transformer loss online monitoring apparatus comprises a mutual inductor portion and a metering box portion. Input voltage and input current at the high-voltage side of a single-phase distribution transformer are acquired by a 10kV single-phase voltage transformer and a 10kV single-phase current transformer of the mutual inductor portion. Output voltage and output current at the low-voltage side of the single-phase distribution transformer are acquired by a low-voltage side voltage lead L and a 0.5kV straight-through current transformer. A three-phase intelligent electric energy meter of the metering box portion monitors and meters parameters, such as input voltage, output voltage, operating loss and the like, of the single-phase distribution transformer in real time, and processed data is uploaded through a GPRS communication module. The single-phase distribution transformer loss online monitoring apparatus may accurately monitor the operating parameters, such as loss or the like, of the single-phase distribution transformer in a single-phase distribution mode in real time, communicates relative data to a main station so as to achieve multiple functions of remotely monitoring operating states, such as real-time loss, of the single-phase distribution transformer and acquiring remote data.
Description
Technical field
The present invention relates to power distribution equipment field, especially relate to the single phase distribution transformer loss on-Line Monitor Device of a kind of Real-Time Monitoring single phase distribution transformer loss.
Background technology
At present, China's low-voltage network generally adopts three-phase four-wire system distribution form, but along with the development of power industry and power grid construction, the deepening continuously of transformation, many drawbacks such as the radius of low voltage power supply that this distribution system exists is long, line loss is large, single transformer capacity is excessive highlight day by day.There is low-voltage circuit short radius, the single phase distribution technology of transformer low capacity, the features such as point of gathering, can significantly reduce line loss, significantly improve power supply quality, to China's town region residential electricity consumption, new rural village yard up community etc. some only need the load of single phase poaer supply to have important reference.Single phase distribution technology has great promotional value in China's town and country power distribution network.
, when carrying out confession distribution planning, must there be the foundation of science in power supply enterprise to the work such as to layout of system increase-volume, transformer; Meanwhile, in order to monitor the running statuses such as substation transformer loss, need to gather transformer operational factor.But transformer monitoring equipment is in the market mainly used in the one-sided information acquisition of three-phase transformer, also there is no a kind of single phase distribution transformer monitoring device with substation transformer loss real time monitoring function.
Summary of the invention
Single phase distribution transformer can not be directly applied in order to overcome above-mentioned existing monitoring device, the deficiency of single phase distribution transformer loss can not be monitored, the invention provides a kind of single phase distribution transformer loss on-Line Monitor Device.This monitoring device gathers voltage and the electric current of single phase distribution transformer high-pressure side input by 10kV single-phase potential transformer and 10kV single-phase current transformer; Adopt low voltage voltage goes between, 0.5kV straight-through current transformer gathers the output of single phase distribution transformer low-pressure side voltage and electric current; Utilize three-phase intelligent electric-energy meter to complete the metering respectively of the information such as single phase distribution transformer high-pressure side power input, low-pressure side output power simultaneously, and the operational factor meterings such as single phase distribution transformer loss situation are completed by data processing, Monitoring Data, by after the analysis to data message, integration process, accurately, is reliably uploaded to main website by GPRS communication module by electric energy meter.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of single phase distribution transformer loss on-Line Monitor Device, comprise mutual inductor part and batch meter part, wherein mutual inductor part comprises, 10kV single-phase potential transformer and 10kV single-phase current transformer, single phase distribution transformer low-pressure side voltage lead L, 0.5kV straight-through current transformer; Batch meter part comprises, three-phase intelligent electric-energy meter, GPRS communication module, terminal block.
Further, the casing top of batch meter is provided with top cover, and cabinet front is provided with chamber door, and be provided with louvre in the side of casing, bottom half is provided with entrance hole;
Further, three-phase intelligent electric-energy meter is arranged in casing, the secondary outgoing line of 10kV single-phase potential transformer, 10kV single-phase current transformer, single phase distribution transformer low-pressure side voltage lead L and 0.5kV straight-through current transformer secondary outgoing line enter in casing by the entrance hole of bottom half, access terminal block, terminal block outlet access three-phase intelligent electric-energy meter connection terminal, three-phase intelligent electric-energy meter is communicated by RS485 with GPRS communication module, and metrical information is uploaded to main website by GPRS communication module.
Further, 10kV single-phase potential transformer, the outlet of 10kV single-phase current transformer secondary side access three-phase intelligent electric-energy meter in order to carry out single phase distribution transformer high-pressure side input voltage, input current collection, power input, electric quantity metering etc. by terminal block; Low-pressure side voltage lead L, 0.5kV straight-through current transformer secondary outgoing line carries out step down side output voltage, output current collection, output power, electric quantity metering etc. by terminal block access three-phase intelligent electric-energy meter; The high-pressure side power input information of single phase distribution transformer and single phase distribution transformer low-pressure side output power information carry out analyzing by three-phase intelligent electric-energy meter, integrate overall treatment after, obtain single phase distribution transformer running wastage, by GPRS communication module, metrical information is sent to main website.
Further, 10kV single-phase potential transformer primary side A, B end connects single phase distribution transformer two inlet wires respectively, gather single phase distribution transformer high-pressure side input voltage, 10kV single-phase potential transformer secondary side output terminal a accesses three-phase intelligent electric-energy meter, accesses three-phase intelligent electric-energy meter after output terminal b ground connection; 10kV single-phase current transformer is sleeved on 10kV single-phase potential transformer A and holds in the phase line of place, and 10kV single-phase current transformer secondary side s11 termination enters three-phase intelligent electric-energy meter, and s12 accesses three-phase intelligent electric-energy meter after bringing out line ground connection.In single phase distribution transformer low-pressure side L pole, voltage lead is installed, draws low-pressure side voltage lead L and access three-phase intelligent electric-energy meter; At single phase distribution transformer low-pressure side L pole suit 0.5kV straight-through current transformer, 0.5kV straight-through current transformer secondary side s21 termination enters three-phase intelligent electric-energy meter, s22 accesses three-phase intelligent electric-energy meter after bringing out line ground connection.
Further, 10kV single-phase potential transformer secondary side a, b end accesses three-phase intelligent electric-energy meter 2,10 terminal respectively by terminal block, and 10kV single-phase current transformer secondary side s11, s12 end accesses three-phase intelligent electric-energy meter 1,3 terminal respectively by terminal block; The extremely upper low-pressure side voltage lead L installed of single phase distribution transformer low-pressure side L is by terminal block access three-phase intelligent electric-energy meter No. 5 terminals, and 0.5kV straight-through current transformer secondary side s21, s22 end accesses three-phase intelligent electric-energy meter 4,6 terminal respectively by terminal block.
Further, single phase distribution transformer loss on-Line Monitor Device has the functions such as loss statistics and telecommunication, its Monitoring Data comprises: single phase distribution transformer input voltage and electric current, output voltage and electric current, power input, output power, transformer loss, every daily extremes data and time of origin etc. thereof, Monitoring Data, by after the analysis to data message, integration process, accurately, is reliably uploaded to main website by GPRS communication module by electric energy meter.
The present invention compared to the prior art, have the following advantages and effect: single phase distribution transformer loss on-Line Monitor Device comprises 10kV single-phase potential transformer and 10kV single-phase current transformer (or 10kV combined single-phase mutual inductor), 0.5kV straight-through current transformer, low-pressure side voltage lead L, three-phase intelligent electric-energy meter, GPRS communication module, terminal block, there is statistics single phase distribution transformer primary side, secondary side voltage and electric current, input, output power, the functions such as transformer loss, adopt one piece of three-phase electric energy meter namely can the loss numerical value of record phase substation transformer in different loads situation, for the power consumption situation of research single transformer in actual motion, carry out the research of single phase distribution transformer energy-saving effect and Data support is provided, in the development of China's town and country power distribution network promotion and implementation and town and country electrical power distribution automatization system, there is impetus energetically to single phase distribution system.The present invention can the operational factor such as loss of single phase distribution transformer exactly under Real-Time Monitoring single phase distribution mode, and related data communicated with main website, thus realize the several functions such as remote monitoring, distant place data acquisition of the running statuses such as single phase distribution transformer real-time loss.
Accompanying drawing explanation
Fig. 1 is the single phase distribution transformer loss on-Line Monitor Device schematic diagram of embodiment;
Fig. 2 is the outside drawing of the single phase distribution transformer loss on-Line Monitor Device batch meter part of embodiment;
Fig. 3 is the front cross-sectional structural map of the single phase distribution transformer loss on-Line Monitor Device batch meter part of embodiment;
Fig. 4 is the single phase distribution transformer loss on-Line Monitor Device mutual inductor interstar connection figure of embodiment;
Fig. 5 is the single phase distribution transformer loss on-Line Monitor Device mutual inductor terminal connection diagram of embodiment.
Description of reference numerals: 1-10kV single-phase potential transformer, 2-10kV single-phase current transformer, 3-low-pressure side voltage lead L, 4-0.5kV straight-through current transformer, 5-three-phase intelligent electric-energy meter, 6-terminal block, 7-GPRS communication module, 8-casing, 9-chamber door, 10-louvre, 11-top cover, 12-entrance hole.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Reference Fig. 1, Fig. 1 are single phase distribution transformer loss on-Line Monitor Device schematic diagram.As shown in Figure 1,10kV single-phase potential transformer (1), 10kV single-phase current transformer (2) gather the on high-tension side input voltage of single phase distribution transformer and input current respectively; Connect the low-pressure side output voltage and the output current that gather single phase distribution transformer from the low-pressure side voltage lead L (3) of low-pressure side live wire, 0.5kV straight-through current transformer (4) respectively.The input gathered, the voltage of output, current signal are by terminal block (6) access three-phase intelligent electric-energy meter (5), three-phase intelligent electric-energy meter (5) is sent to main website by after aggregation of data process by GPRS communication module (7), and described GPRS module (7) is powered by single phase distribution transformer low-voltage side outlet.
With reference to the outside drawing that Fig. 2, Fig. 2 are the single phase distribution transformer loss on-Line Monitor Device batch meter part of embodiment.As shown in Figure 2, casing (8) top is provided with top cover (11), cabinet front is provided with chamber door (9), is provided with louvre (10) in the side of casing (8), and bottom half is provided with entrance hole (12).
With reference to the front cross-sectional structural map that Fig. 3, Fig. 3 are the single phase distribution transformer loss on-Line Monitor Device batch meter part of embodiment.As shown in Figure 3, 10kV single-phase potential transformer (1), the secondary outgoing line of 10kV single-phase current transformer (2), low-pressure side voltage lead L (3) and 0.5kV straight-through current transformer (4) secondary outgoing line enter in casing (8) by the entrance hole (12) of casing (8) bottom, access terminal block (6), terminal block (6) outlet access three-phase intelligent electric-energy meter (5) is for power and electric energy metrical, three-phase intelligent electric-energy meter (5) is communicated by RS485 with GPRS communication module (7), metrical information is sent to main website by GPRS communication module (7).
Reference Fig. 4, Fig. 4 are embodiment single phase distribution transformer loss on-Line Monitor Device mutual inductor interstar connection figure.As shown in Figure 4,10kV single-phase potential transformer (1) primary side A, B end connects single phase distribution transformer two inlet wires respectively, gather single phase distribution transformer input voltage, draw 10kV single-phase potential transformer (1) secondary side output terminal a, b, and output terminal b ground connection; 10kV single-phase current transformer (2) is arranged on 10kV single-phase potential transformer (1) A and holds place to go up mutually, draws 10kV single-phase current transformer (2) secondary side output terminal s11, s12, and output terminal s12 ground connection.
In single phase distribution transformer low-pressure side L pole, voltage lead is installed, picks out low-pressure side voltage lead L (3); In single transformer low-pressure side L pole, 0.5kV straight-through current transformer (4) is installed, draws 0.5kV straight-through current transformer (4) secondary side output terminal s21, s22, and output terminal s22 ground connection.
Reference Fig. 5, Fig. 5 are single phase distribution transformer loss on-Line Monitor Device three-phase intelligent electric-energy meter (5) terminal connection diagrams.As shown in Figure 5,10kV single-phase potential transformer (1) secondary side output terminal a, output terminal b accesses 2,10 terminals of three-phase intelligent electric-energy meter (5), for measuring single phase distribution transformer high-pressure side input voltage and providing zero potential respectively by terminal block; 10kV single-phase current transformer (2) output terminal s11, output terminal s12 access 1,3 terminals of three-phase intelligent electric-energy meter (5) respectively by terminal block, for measuring single phase distribution transformer high-pressure side input current; Be connected on the low-pressure side voltage lead L (3) of L pole, by 5 terminals of terminal block (6) access three-phase intelligent electric-energy meter (5), be combined with the common 10 of three-phase intelligent electric-energy meter (5) and measure single phase distribution transformer low-pressure side output voltage; Extremely upper 0.5kV straight-through current transformer (4) output terminal s21, the s22 installed of single phase distribution transformer low-pressure side L accesses 4, No. 6 terminals of three-phase intelligent electric-energy meter (5) respectively by terminal block (6), for measuring single phase distribution transformer low-pressure side output current.
Above content described in this instructions is only made for the present invention illustrating.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of instructions of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (6)
1. a single phase distribution transformer loss on-Line Monitor Device, is characterized in that:
Comprise mutual inductor part and batch meter part, wherein mutual inductor part comprises, 10kV single-phase potential transformer and 10kV single-phase current transformer, single phase distribution transformer low-pressure side voltage lead L, 0.5kV straight-through current transformer; Batch meter part comprises, three-phase intelligent electric-energy meter, GPRS communication module, terminal block.
2. a kind of single phase distribution transformer loss on-Line Monitor Device according to claim 1, is characterized in that:
The casing top of batch meter is provided with top cover, and cabinet front is provided with chamber door, and be provided with louvre in the side of casing, bottom half is provided with entrance hole;
Three-phase intelligent electric-energy meter is arranged in casing, the secondary outgoing line of 10kV single-phase potential transformer, 10kV single-phase current transformer, single phase distribution transformer low-pressure side voltage lead L and 0.5kV straight-through current transformer secondary outgoing line enter in casing by the entrance hole of bottom half, access terminal block, terminal block outlet access three-phase intelligent electric-energy meter connection terminal, three-phase intelligent electric-energy meter is communicated by RS485 with GPRS communication module, and metrical information is uploaded to main website by GPRS communication module.
3. a kind of single phase distribution transformer loss on-Line Monitor Device according to claim 1, is characterized in that:
10kV single-phase potential transformer, the outlet of 10kV single-phase current transformer secondary side access three-phase intelligent electric-energy meter in order to carry out single phase distribution transformer high-pressure side input voltage, input current collection, power input, electric quantity metering etc. by terminal block; Low-pressure side voltage lead L, 0.5kV straight-through current transformer secondary outgoing line carries out step down side output voltage, output current collection, output power, electric quantity metering etc. by terminal block access three-phase intelligent electric-energy meter; The high-pressure side power input information of single phase distribution transformer and single phase distribution transformer low-pressure side output power information carry out analyzing by three-phase intelligent electric-energy meter, integrate overall treatment after, obtain single phase distribution transformer running wastage, by GPRS communication module, metrical information is sent to main website.
4. a kind of single phase distribution transformer loss on-Line Monitor Device according to claim 3, is characterized in that:
10kV single-phase potential transformer primary side A, B end connects single phase distribution transformer two inlet wires respectively, gather single phase distribution transformer high-pressure side input voltage, 10kV single-phase potential transformer secondary side output terminal a accesses three-phase intelligent electric-energy meter, accesses three-phase intelligent electric-energy meter after output terminal b ground connection; 10kV single-phase current transformer is sleeved on 10kV single-phase potential transformer A and holds in the phase line of place, and 10kV single-phase current transformer secondary side s11 termination enters three-phase intelligent electric-energy meter, and s12 accesses three-phase intelligent electric-energy meter after bringing out line ground connection.In single phase distribution transformer low-pressure side L pole, voltage lead is installed, draws low-pressure side voltage lead L and access three-phase intelligent electric-energy meter; At single phase distribution transformer low-pressure side L pole suit 0.5kV straight-through current transformer, 0.5kV straight-through current transformer secondary side s21 termination enters three-phase intelligent electric-energy meter, s22 accesses three-phase intelligent electric-energy meter after bringing out line ground connection.
5. a kind of single phase distribution transformer loss on-Line Monitor Device according to claim 4, is characterized in that:
10kV single-phase potential transformer secondary side a, b end accesses three-phase intelligent electric-energy meter 2,10 terminal respectively by terminal block, and 10kV single-phase current transformer secondary side s11, s12 end accesses three-phase intelligent electric-energy meter 1,3 terminal respectively by terminal block; The extremely upper low-pressure side voltage lead L installed of single phase distribution transformer low-pressure side L is by terminal block access three-phase intelligent electric-energy meter No. 5 terminals, and 0.5kV straight-through current transformer secondary side s21, s22 end accesses three-phase intelligent electric-energy meter 4,6 terminal respectively by terminal block.
6. a kind of single phase distribution transformer loss on-Line Monitor Device according to claim 5, is characterized in that:
Single phase distribution transformer loss on-Line Monitor Device has the functions such as loss statistics and telecommunication, its Monitoring Data comprises: single phase distribution transformer input voltage and electric current, output voltage and electric current, power input, output power, transformer loss, every daily extremes data and time of origin etc. thereof, Monitoring Data, by after the analysis to data message, integration process, accurately, is reliably uploaded to main website by GPRS communication module by electric energy meter.
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| CN105652053A (en) * | 2016-03-11 | 2016-06-08 | 国网山东省电力公司商河县供电公司 | Portable electric energy metering and electric shock preventing device |
| CN105717387A (en) * | 2015-11-27 | 2016-06-29 | 国网河南宜阳县供电公司 | Test apparatus and method for online measurement of transformer loss |
| CN106526433A (en) * | 2016-09-20 | 2017-03-22 | 海南电力技术研究院 | Transformer current waveform feature testing method and device |
| CN107064725A (en) * | 2017-05-09 | 2017-08-18 | 国网山东省电力公司淄博供电公司 | A kind of distribution transformer outlet junction contacts state on_line monitoring method and system |
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| CN108761195A (en) * | 2018-05-30 | 2018-11-06 | 广东电网有限责任公司 | A kind of distribution transformer power attenuation synchronous measuring apparatus |
| CN108776252A (en) * | 2018-04-12 | 2018-11-09 | 山东钢铁股份有限公司 | The metering secondary current circuit of main transformer |
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| CN108776252A (en) * | 2018-04-12 | 2018-11-09 | 山东钢铁股份有限公司 | The metering secondary current circuit of main transformer |
| CN108776252B (en) * | 2018-04-12 | 2024-05-28 | 山东钢铁股份有限公司 | Metering secondary current loop of main transformer |
| CN108761195A (en) * | 2018-05-30 | 2018-11-06 | 广东电网有限责任公司 | A kind of distribution transformer power attenuation synchronous measuring apparatus |
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Application publication date: 20150909 |