CN102621427A - Intelligent monitoring device of capacitor complete equipment - Google Patents
Intelligent monitoring device of capacitor complete equipment Download PDFInfo
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- CN102621427A CN102621427A CN201210093519XA CN201210093519A CN102621427A CN 102621427 A CN102621427 A CN 102621427A CN 201210093519X A CN201210093519X A CN 201210093519XA CN 201210093519 A CN201210093519 A CN 201210093519A CN 102621427 A CN102621427 A CN 102621427A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 85
- 238000012806 monitoring device Methods 0.000 title claims abstract description 14
- 238000005070 sampling Methods 0.000 claims abstract description 51
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- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000003993 interaction Effects 0.000 claims abstract 2
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Abstract
一种电容器成套设备的智能监测装置，该电容器成套设备由一个电压互感器、两个霍尔电压传感器、三个电流互感器、五个温度传感器共同构成，该智能监测装置包括DSP数字处理模块、电压采样模块、电流采样模块、温度采样模块、显示交互模块和通信接口模块，电压互感器、第一和第二霍尔电压传感器的输出端分别连接电压采样模块的输入端，第一、第二和第三电流互感器的输出端分别连接电流采样模块的输入端，第一、第二、第三、第四和第五温度传感器的输出端分别连接温度采样模块的输入端。本发明实现了实时观察电容器成套设备内部各组电容器和电抗器的工作状况、故障现象和故障位置，为分析电容器成套设备的性能和容量变化、研究内部各组电容器和电抗器的损坏机理奠定了基础。
An intelligent monitoring device for a complete set of capacitor equipment. The complete set of capacitor equipment is composed of a voltage transformer, two Hall voltage sensors, three current transformers, and five temperature sensors. The intelligent monitoring device includes a DSP digital processing module, The voltage sampling module, the current sampling module, the temperature sampling module, the display interaction module and the communication interface module, the output terminals of the voltage transformer, the first and the second Hall voltage sensors are respectively connected to the input terminals of the voltage sampling module, the first and the second The output terminals of the current transformer and the third current transformer are respectively connected to the input terminals of the current sampling module, and the output terminals of the first, second, third, fourth and fifth temperature sensors are respectively connected to the input terminals of the temperature sampling module. The invention realizes the real-time observation of the working conditions, fault phenomena and fault locations of each group of capacitors and reactors inside the complete set of capacitors, and lays a foundation for analyzing the performance and capacity changes of the complete set of capacitors and studying the damage mechanism of each group of capacitors and reactors inside Base.
Description
Technical field
The present invention relates to a kind of capacitor set of equipments, especially refer to the intelligent monitoring device of capacitor set of equipments.
Background technology
The capacitor set of equipments is the critical elements of electric system; As shown in Figure 1; Its phase structure comprises two branch roads that are divided under the phase line; First branch road is the branch road of one first reactor LL1 and one first capacitor C1 series connection, and second branch road is second, third capacitor C2 of one second reactor LL2 and two parallel connections, the branch road of C3 series connection.This capacitor set of equipments be generally used for electric system reactive-load compensation, harmonic, improve the quality of power supply etc.Since the capacitor set of equipments in operational process through regular meeting transship, fault such as overheated, insulation breakdown, he even causes the blast of power capacitor, the serious threat person and device security.
Inner power capacitor and the damage of reactor or the method for inefficacy of tradition inspection capacitor set of equipments is to judge through the intensity of variation of measuring the external electrical parameter.This inspection method only could be effective under damage or the more situation of volume change, and can not find inner individual capacitors damage or failure phenomenon, more can not effectively analyze the source of damage and location.
In order to prevent that effectively power capacitor and reactor in the capacitor set of equipments lost efficacy because of factors such as overload, overheated, insulation or damage; Effectively the damage mechanism and the localization of fault thereof of inner each capacitor of analytical equipment and reactor press for monitoring of configuration necessary security and protection alarm device in the capacitor set of equipments.
Summary of the invention
The present invention is directed to the deficiency of prior art; A kind of intelligent monitoring device of capacitor set of equipments is provided; So that working condition, phenomenon of the failure and the abort situation of inner each group capacitor of Real Time Observation capacitor set of equipments and reactor reach safety monitoring and the purpose of protecting alarm.
Realize that the above-mentioned purpose technical scheme is: a kind of intelligent monitoring device of capacitor set of equipments; The phase structure of this capacitor set of equipments comprises two branch roads that are divided under the phase line; First branch road is the branch road of one first reactor and one first capacitors in series; Second branch road is the branch road of second, third capacitors in series of one second reactor and two parallel connections, it is characterized in that: said capacitor set of equipments comprises: the voltage transformer (VT) that on phase line, connects; First current transformer that between first reactor of first branch road and first capacitor, connects, at first temperature sensor that connects on first reactor, the three-temperature sensor and the first Hall voltage sensor that on first capacitor, connect respectively; At second temperature sensor that connects on second reactor of second branch road, be serially connected in second current transformer, the 4th temperature sensor that is connecting on second capacitor between second reactor and second capacitor, be serially connected in the second Hall voltage sensor that connects on the 3rd current transformer between second reactor and the 3rd capacitor, the 5th temperature sensor that is connecting on the 3rd capacitor and second, third capacitor of parallel connection at second branch road; Described intelligent monitoring device comprises: DSP digital signal processing module and the voltage sample module that links to each other with this DSP digital signal processing module respectively, current sample module, temperature sampling module, demonstration interactive module and communication interface modules; Wherein: described voltage transformer (VT), the first Hall voltage sensor and the output terminal of the second Hall voltage sensor are connected the input end of said voltage sample module respectively; Described first current transformer, second current transformer and the output terminal of the 3rd current transformer are connected the input end of described current sample module respectively, and described first temperature sensor, second temperature sensor, three-temperature sensor, the 4th temperature sensor and the output terminal of the 5th temperature sensor are connected the input end of described temperature sampling module respectively.
Adopted above-mentioned technical scheme, the present invention has following function: (1) each monitoring of capacitor group harmonic current and harmonic wave overcurrent protection; (2) each monitoring of capacitor group residual voltage and security alarm; (3) the crucial operational factor record of each capacitor group; (4) each monitoring of reactor electrical quantity and record; (5) monitoring of the running temperature of each reactor and record; (6) harmonic parameters is to the impact analysis of force device temperature rise and insulating property.Therefore the present invention has realized working condition, phenomenon of the failure and the abort situation of inner each group capacitor of Real Time Observation capacitor set of equipments and reactor, for performance and the volume change of analyzing the capacitor set of equipments, the damage mechanism of studying inner each group capacitor and reactor are laid a good foundation.
Description of drawings
Fig. 1 has capacitor set of equipments phase structure schematic diagram now;
The single-phase schematic diagram of Fig. 2 capacitor set of equipments of the present invention;
The intelligent monitoring device system architecture diagram of Fig. 3 capacitor set of equipments of the present invention.
Embodiment
In order to understand technical scheme of the present invention better, below through specific embodiment and combine accompanying drawing at length to explain:
One, sees also Fig. 2; The phase structure of this capacitor set of equipments comprises two branch roads that are divided under the phase line; First branch road is the branch road of one first reactor LL1 and one first capacitor C1 series connection; Second branch road is second, third capacitor C2 of one second reactor LL2 and two parallel connections, the branch road of C3 series connection
The phase structure of capacitor set of equipments also comprise a voltage transformer (VT) VT, two first, second Hall voltage sensor H1, H2, three first, second and the 3rd current transformer CT1.CT2 and CT3, five first, second.Three, the 4th and the 5th temperature sensor T1.T2.T3.T4 and T5.
Voltage transformer (VT) VT is connected on the phase line;
On first branch road; The first current transformer CT1 is connected between the first reactor LL1 and the first capacitor C1; The first temperature sensor T1 is connected on the first reactor LL1, and the three-temperature sensor T3 and the first Hall voltage sensor H1 are connected on the first capacitor C1;
On second branch road; The second temperature sensor T2 is connected on the second reactor LL2; The second current transformer CT2 is serially connected between the second reactor LL2 and the second capacitor C2, and the 4th temperature sensor T4 is connected on the second capacitor C2, and the 3rd current transformer CT3 is serially connected between the second reactor LL2 and the 3rd capacitor C3; The 5th temperature sensor T5 is connected on the 3rd capacitor C3, and the second Hall voltage sensor H2 is connected in parallel on second, third capacitor branch road.
Two, referring to Fig. 3, intelligent monitoring device comprises: DSP digital signal processing module and the voltage sample module 1 that links to each other with this DSP digital signal processing module respectively, current sample module 2, temperature sampling module 3, demonstration interactive module 5 and communication interface modules 6.
The major function of voltage sample module 1 is following:
1. the output voltage signal of voltage transformer (VT) VT is nursed one's health the voltage range that satisfies modules A DC;
With the output signal condition of Hall voltage sensor H1 to the voltage range that satisfies modules A DC;
With the output signal condition of Hall voltage sensor H2 to the voltage range that satisfies modules A DC;
4. send modules A DC to accomplish digitized sampling above-mentioned three road voltage signals;
5. send DSP digital signal processing module 4 with the digitized sampling sequence of above-mentioned three road voltage signals.
The major function of current sample module 2 is following:
With the output signal condition of current transformer CT1 to the voltage range that satisfies modules A DC;
With the output signal condition of current transformer CT2 to the voltage range that satisfies modules A DC;
With the output signal condition of current transformer CT3 to the voltage range that satisfies modules A DC;
4. send modules A DC to accomplish digitized sampling above-mentioned three road voltage signals;
5. send DSP digital signal processing module 4 with the digitized sampling sequence of above-mentioned three road current signals.
The major function of temperature sampling module 3 is following:
With the output signal condition of temperature sensor T1 to the voltage range that satisfies modules A DC;
With the output signal condition of temperature sensor T2 to the voltage range that satisfies modules A DC;
With the output signal condition of temperature sensor T3 to the voltage range that satisfies modules A DC;
With the output signal condition of temperature sensor T4 to the voltage range that satisfies modules A DC;
With the output signal condition of temperature sensor T5 to the voltage range that satisfies modules A DC;
6. send modules A DC to accomplish digitized sampling above-mentioned five road temperature signals;
7. send DSP digital signal processing module 4 with the digitized sampling sequence of above-mentioned five road temperature signals.
The major function of DSP digital signal processing module 4 is following:
1. the synchronization process of each road voltage, current sampling signal;
2. the effective value of each road voltage, current signal, peak value calculate;
3. the instantaneous power of each group capacitor and reactor, average power are calculated;
4. the FFT computing of each road voltage, current signal, thus the each harmonic component of each road voltage, current signal just can be obtained, and the harmonic power parameter;
5. the limit value (criterion) with the parameters and the parameters of aforementioned calculation compares, and comparative result sent to shows that interactive module 5 shows or the alarm indication, also can be with comparative result through communication interface modules 6 unofficial biography or external memory.
6. according to comparative result failure judgement type, localization of fault;
7. voltage, current sampling data before and after the preservation fault;
8. control the co-ordination and the reliability service of each module.
The major function that shows interactive module 5 is following:
1. the main wiring diagram and the correlation parameter thereof that show three-phase circuit;
2. parameters such as each item voltage under the demonstration normal operating condition, electric current, power, harmonic wave, temperature;
3. each item voltage, the current waveform under the demonstration normal operating condition;
4. parameters such as each item voltage under the demonstration malfunction, electric current, power, harmonic wave, temperature;
5. each item voltage, current waveform under the demonstration malfunction;
6. the conditioning parameter of each input channel is set;
7. the comparison limit value (criterion) of parameters is set.
The major function of communication interface modules 6 is following:
1. with the communication function of host computer;
2. electrical quantity data conversion storages such as each item voltage under the normal operating condition, electric current, power, each harmonic;
3. electrical quantity data conversion storages such as each item voltage under the malfunction, electric current, power, each harmonic.
Three, referring to Fig. 2, Fig. 3, the annexation of capacitor set of equipments and intelligent monitoring device is:
1, the output terminal of voltage transformer (VT) VT, the first Hall voltage sensor H1, the second Hall voltage sensor H2 connects the input end of voltage sample module 1 respectively.
1. 1. voltage transformer (VT) VT output terminal connect voltage sample module 1 input end, and 2. 2. voltage transformer (VT) VT output terminal connect voltage sample module 1 input end; 3. 3. the first Hall voltage sensor H1 output terminal connect voltage sample module 1 input end, and 4. 4. the first Hall voltage sensor H1 output terminal connect voltage sample module 1 input end; 5. 5. the second Hall voltage sensor H2 output terminal connect voltage sample module 1 input end, and 6. 6. the second Hall voltage sensor H2 output terminal connect voltage sample module 1 input end.
The voltage signal of voltage transformer (VT) VT, the first Hall voltage sensor H1 and second Hall voltage sensor H2 output is after the digitized sampling of voltage sample module 1, and its Serial No. sends DSP digital signal processing module 4 to through bus.
2, the output terminal of the first current transformer CT1, the second current transformer CT2, the 3rd current transformer CT3 connects the input end of described current sample module 2 respectively.
The first output of the current transformer CT1 current sampling module 2 ⑦ connected input ⑦, the first output current transformers CT1 ⑧ then current sampling module 2 inputs ⑧; second current transformer CT2 output terminal connected to the current sampling module 2 ⑨ input ⑨, the second current transformer CT2 output current sampling module 2 ⑩ connected input ⑩; CT3 third current transformer output
then current sampling module 2 inputs
CT3 third current transformer output
then current sampling module 2 input
The current signal that first, second and the 3rd current transformer are exported is accomplished digitized sampling then at first through the I/V of current sample module 2 conversion, sends its Serial No. to DSP digital signal processing module 4 through bus at last.
3, the first temperature sensor T1, the second temperature sensor T2, three-temperature sensor T3, the 4th temperature sensor T4, the 5th temperature sensor T5 output terminal connect described temperature sampling module 3 input ends respectively.
The first output of the temperature sensor T1
bonding temperature sampling module 3-input
The first output of the temperature sensor T1
bonding temperature sampling module 3-input
The second output of the temperature sensor T2
bonding temperature sampling module 3-input
The second output of the temperature sensor T2
then temperature sampling module 3 inputs
third temperature sensor T3 output
bonding temperature sampling module 3-input
third temperature sensor T3 output
bonding temperature sampling module 3-input
fourth temperature sensor T4 output
bonding temperature sampling module 3-input
Fourth temperature sensor T4 output
bonding temperature sampling module 3-input
T5 fifth temperature sensor output
bonding temperature sampling module 3-input
T5 fifth temperature sensor output
bonding temperature sampling module 3-input
The voltage signal of the first, second, third, fourth and the 5th temperature sensor output also is sent to DSP digital signal processing module 4 through bus with its Serial No. after the amplification and digitized sampling of temperature sampling module 3.
In sum, the voltage signal of voltage transformer (VT) of the present invention and first, second Hall voltage sensor output is after the digitized sampling of voltage sample module 1, and its Serial No. sends DSP digital signal processing module 4 to through bus.The current signal that first, second and the 3rd current transformer are exported is accomplished digitized sampling then at first through the I/V of current sample module 2 conversion, sends its Serial No. to DSP digital signal processing module 4 through bus at last.The voltage signal of the first, second, third, fourth and the 5th temperature sensor output also is sent to DSP digital signal processing module 4 through bus with its Serial No. after the amplification and digitized sampling of temperature sampling module 3.
Detect alternating current parameter by voltage transformer (VT) VT, three current transformer CT1.CT2 and CT3; Detection exchanges and DC parameter with H2 by two Hall voltage sensor H1; Detect the temperature rise parameter of reactor LL1 and LL2 by two temperature sensor T1 and T2, by the temperature rise parameter of other three temperature sensor T3.T4 and T5 detection capacitor group C1, C2 and C3.
Harmonic current Monitoring Data according to each capacitor group is judged the harmonic wave overcurrent condition; Residual voltage Monitoring Data according to each capacitor group is judged its performance and working condition; According to their the temperature rise situation of temperature monitoring data judgement of each capacitor group and reactor, analyze their influences to each capacitor group and reactor temperature rise and insulating property according to harmonic parameters to be detected.
The present invention is through the digitized sampling of these three sampling modules; And send the digitizing sequence of sampled signal to the DSP digital signal processing module; After various computing method computings, just formed monitoring result; Can send monitoring result at last and show that interactive module shows and alarms, and also can pass through the communication interface modules unofficial biography.For example: the present invention is through the computing to each voltage, electric current and temperature parameter in the capacitor set of equipments; When the third harmonic power of finding second group of power capacitor C2 exceeds normal operating condition 2 times of third harmonic power; And the temperature rise that detects C2 increases; Just can judge second group of power capacitor C2 thus breaks down; Can advise that relevant departments adopt an effective measure immediately, make this equipment out of service, avoid the further expansion of fault or develop into electric power accident jeopardizing safety.And for example monitor through the several months of this monitoring device; Find that B phase condenser capacity has reduced 3% before than some months, had the fuse of monolithic capacitor to be blown in this explanation B phase capacitor, thereby the inefficacy of monomer whose capacitor reduces condenser capacity; Can advise relevant departments accomplish further whether detection back this phase capacitor of decision is out of service; Can pinpoint the problems in advance thus, avoid the further expansion and the deterioration of the state of affairs, effects such as influence compensation, filtering.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007360A (en) * | 2014-04-30 | 2014-08-27 | 合容电气股份有限公司 | Alternating current testing device and method for phase-controllable on-off capacitor inner fuse wire |
| CN106872833A (en) * | 2017-04-13 | 2017-06-20 | 山东汇能电气有限公司 | High-voltage parallel capacitor complete set of equipments method for evaluating state based on power detection |
| CN106896287A (en) * | 2017-04-13 | 2017-06-27 | 山东汇能电气有限公司 | The on-line monitoring method of power capacitor working condition in reactive power compensator |
| CN107063488A (en) * | 2017-03-22 | 2017-08-18 | 合肥仁德电子科技有限公司 | A kind of electronic product capacitance detecting device and detection method |
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| CN202533531U (en) * | 2012-03-31 | 2012-11-14 | 上海市电力公司 | Intelligent monitoring device for capacitor complete apparatus |
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2012
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| CA1256937A (en) * | 1985-04-11 | 1989-07-04 | Philip Chadwick | Zinc oxide stack overvoltage protection against temperature rise and thermal runaway |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007360A (en) * | 2014-04-30 | 2014-08-27 | 合容电气股份有限公司 | Alternating current testing device and method for phase-controllable on-off capacitor inner fuse wire |
| CN104007360B (en) * | 2014-04-30 | 2017-03-08 | 合容电气股份有限公司 | A kind of controllable phase cut-offs the alternating-current measurement device and method of capacitor Internal fuse |
| CN107063488A (en) * | 2017-03-22 | 2017-08-18 | 合肥仁德电子科技有限公司 | A kind of electronic product capacitance detecting device and detection method |
| CN106872833A (en) * | 2017-04-13 | 2017-06-20 | 山东汇能电气有限公司 | High-voltage parallel capacitor complete set of equipments method for evaluating state based on power detection |
| CN106896287A (en) * | 2017-04-13 | 2017-06-27 | 山东汇能电气有限公司 | The on-line monitoring method of power capacitor working condition in reactive power compensator |
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Owner name: SHANGHAI YONGJIN ELECTRIC GROUP CO., LTD. STATE EL Free format text: FORMER OWNER: SHANGHAI YONGJIN ELECTRIC GROUP CO., LTD. Effective date: 20121024 |
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Application publication date: 20120801 |