CN111579932A - Island detection method for distributed power generation system - Google Patents
Island detection method for distributed power generation system Download PDFInfo
- Publication number
- CN111579932A CN111579932A CN202010474399.2A CN202010474399A CN111579932A CN 111579932 A CN111579932 A CN 111579932A CN 202010474399 A CN202010474399 A CN 202010474399A CN 111579932 A CN111579932 A CN 111579932A
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- CN
- China
- Prior art keywords
- annunciator
- power generation
- power supply
- detection method
- generation system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
Abstract
The invention provides an island detection method for a distributed power generation system, and belongs to the technical field of electric energy. It has solved prior art and has had the poor problem of stability. According to the island detection method of the distributed power generation system, a first annunciator is arranged between a power generation end and a power supply end, a second annunciator is arranged between the power supply end and a power utilization end, a receiver is arranged at the power generation end, the first annunciator can detect whether power supply interruption exists between the power generation end and the power supply end, the second annunciator can detect whether power supply interruption exists between the power supply end and the power utilization end, and the receiver can receive power supply interruption signals sent by the first annunciator and the second annunciator. The island detection method of the distributed power generation system can detect system abnormality in real time.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a distributed power generation system island detection method.
Background
The islanding effect means that when the power grid is interrupted due to an electrical fault, a natural factor or misoperation, the photovoltaic power generation system of each user side does not timely detect the power failure state and is separated from the commercial power grid, the photovoltaic power generation system continuously keeps transmitting electric energy to the power grid, meanwhile, an independent self-sufficient power supply islanding which cannot be controlled by the public power grid is formed with a load, and the formed system is called an islanding system.
When the power supply is abnormal, maintenance personnel are needed to detect all parts one by one, and the whole detection process is time-consuming and labor-consuming.
Disclosure of Invention
The invention aims to provide a distributed power generation system island detection method which is rapid and accurate in detection aiming at the problems in the prior art.
The purpose of the invention can be realized by the following technical scheme:
a distributed power generation system island detection method is characterized in that a first annunciator is arranged between the power generation end and the power supply end, a second annunciator is arranged between the power supply end and the power utilization end, a receiver is arranged at the power generation end, the first annunciator can detect whether power supply interruption exists between the power generation end and the power supply end, the second annunciator can detect whether power supply interruption exists between the power supply end and the power utilization end, and the receiver can receive power supply interruption signals sent by the first annunciator and the second annunciator.
According to the island detection method of the distributed power generation system, the first annunciator can detect the circuit connection state between the power generation end and the power supply end in real time, and the second annunciator can detect the circuit connection state between the power supply end and the power utilization end in real time.
And once power supply abnormality occurs, the first annunciator or the second annunciator can immediately send corresponding signals to the receiver. Since the receiver is positioned at the power generation end, the operator at the power generation end can be immediately informed that the power supply abnormality of the whole system occurs.
In the island detection method for the distributed power generation system, data information is transmitted among the first annunciator, the second annunciator and the receiver through data lines.
In the island detection method of the distributed power generation system, data are transmitted among the first annunciator, the second annunciator and the receiver through a wireless network method.
In the island detection method of the distributed power generation system, the receiver is provided with an alarm connected with the receiver.
In the island detection method of the distributed power generation system, the alarm is a horn.
In the island detection method of the distributed power generation system, the alarm is a warning lamp.
Compared with the prior art, the distributed power generation system island detection method can detect the power supply condition of the whole system in real time, and can immediately notify the staff at the power generation end in case of abnormal power supply, so that the feedback is quick when the power supply is abnormal, the stability is high, and the practical value is very high.
Detailed Description
The distributed power generation system comprises a power generation end, a power supply end and a power utilization end.
According to the island detection method of the distributed power generation system, a first annunciator is arranged between a power generation end and a power supply end, a second annunciator is arranged between the power supply end and a power utilization end, a receiver is arranged at the power generation end, the first annunciator can detect whether power supply interruption exists between the power generation end and the power supply end, the second annunciator can detect whether power supply interruption exists between the power supply end and the power utilization end, and the receiver can receive power supply interruption signals sent by the first annunciator and the second annunciator.
And the first annunciator, the second annunciator and the receiver transmit data information through data lines. According to practical situations, data transmission among the first annunciator, the second annunciator and the receiver through a wireless network method is also feasible.
The receiver is provided with an alarm connected with the receiver.
The warning indicator is a loudspeaker. According to practical conditions, the warning device is a warning lamp.
According to the island detection method of the distributed power generation system, the first annunciator can detect the circuit connection state between the power generation end and the power supply end in real time, and the second annunciator can detect the circuit connection state between the power supply end and the power utilization end in real time.
And once power supply abnormality occurs, the first annunciator or the second annunciator can immediately send corresponding signals to the receiver. Since the receiver is positioned at the power generation end, the operator at the power generation end can be immediately informed that the power supply abnormality of the whole system occurs.
Claims (6)
1. A distributed power generation system island detection method is characterized in that a first annunciator is arranged between the power generation end and the power supply end, a second annunciator is arranged between the power supply end and the power utilization end, a receiver is arranged at the power generation end, the first annunciator can detect whether power supply interruption exists between the power generation end and the power supply end, the second annunciator can detect whether power supply interruption exists between the power supply end and the power utilization end, and the receiver can receive power supply interruption signals sent by the first annunciator and the second annunciator.
2. The distributed power generation system island detection method according to claim 1, wherein data information is transmitted among the first annunciator, the second annunciator and the receiver through data lines.
3. The distributed power generation system island detection method according to claim 1, wherein data is transmitted among the first annunciator, the second annunciator and the receiver through a wireless network method.
4. The distributed power generation system island detection method according to claim 2, wherein the receiver has an alarm connected thereto.
5. The distributed power generation system island detection method according to claim 4, wherein the alarm is a horn.
6. The distributed power generation system island detection method according to claim 4, wherein the alarm is an alarm light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474399.2A CN111579932A (en) | 2020-05-29 | 2020-05-29 | Island detection method for distributed power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474399.2A CN111579932A (en) | 2020-05-29 | 2020-05-29 | Island detection method for distributed power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111579932A true CN111579932A (en) | 2020-08-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010474399.2A Pending CN111579932A (en) | 2020-05-29 | 2020-05-29 | Island detection method for distributed power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111579932A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721885A (en) * | 2012-06-27 | 2012-10-10 | 黑龙江省电力科学研究院 | Island effect detecting method based on wavelet analysis |
| CN202614881U (en) * | 2012-06-27 | 2012-12-19 | 黑龙江省电力科学研究院 | Islanding detection device |
| CN103124068A (en) * | 2013-01-31 | 2013-05-29 | 中国电力科学研究院 | Anti-islanding protection system for distributed grid-connected system and protection method of anti-islanding protection system |
| CN203312781U (en) * | 2013-05-29 | 2013-11-27 | 国家电网公司 | Integrated anti-islanding protection system for distributed power generation |
| CN104795838A (en) * | 2015-04-24 | 2015-07-22 | 国家电网公司 | Intelligent anti-islanding device and automatic islanding detecting and destroying method |
-
2020
- 2020-05-29 CN CN202010474399.2A patent/CN111579932A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721885A (en) * | 2012-06-27 | 2012-10-10 | 黑龙江省电力科学研究院 | Island effect detecting method based on wavelet analysis |
| CN202614881U (en) * | 2012-06-27 | 2012-12-19 | 黑龙江省电力科学研究院 | Islanding detection device |
| CN103124068A (en) * | 2013-01-31 | 2013-05-29 | 中国电力科学研究院 | Anti-islanding protection system for distributed grid-connected system and protection method of anti-islanding protection system |
| CN203312781U (en) * | 2013-05-29 | 2013-11-27 | 国家电网公司 | Integrated anti-islanding protection system for distributed power generation |
| CN104795838A (en) * | 2015-04-24 | 2015-07-22 | 国家电网公司 | Intelligent anti-islanding device and automatic islanding detecting and destroying method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200825 |
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| RJ01 | Rejection of invention patent application after publication |