CN104538932B - A kind of relay protection configuration method suitable for the configuration of single subsidiary engine - Google Patents
A kind of relay protection configuration method suitable for the configuration of single subsidiary engine Download PDFInfo
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- CN104538932B CN104538932B CN201510020602.8A CN201510020602A CN104538932B CN 104538932 B CN104538932 B CN 104538932B CN 201510020602 A CN201510020602 A CN 201510020602A CN 104538932 B CN104538932 B CN 104538932B
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Abstract
The present invention discloses a kind of relay protection configuration method suitable for the configuration of single subsidiary engine, farthest avoids malfunction or tripping due to measuring cell or protective device from having an impact motor, improves the operational reliability and economy of power plant.This relay protection configuration method for being suitable for single subsidiary engine configuration; three sets of main protections of installing and more set reserve protections; three sets of main protections are current fault-clearing protective relays, electric current longitudinal differential protection device, magnetic balance longitudinal differential protection device, and reserve protection includes negative phase-sequence overcurrent protective device, zero-sequence over-current protection device, motor protection against overheat device, starting time and rotation-clogging protection device, motor overcurrent protection, overload protection device；Three are carried out according to the actuating quantity of three main protections and selects two logic judgments, are just acted when at least two be action signal in three signals, otherwise, are failure to actuate.
Description
Technical field
The invention belongs to protecting electrical power system configuration technical field, more particularly to it is a kind of suitable for single subsidiary engine configuration
Relay protection configuration method.
Background technique
At home in 300MW and above big power station's unit, boiler is all made of bi serie blower configuration mode, with me
The progress of state's generation technology and the raising of subsidiary engine manufacture level, the availability of state's inner blower is higher and higher, uses monosystem for boiler
The configuration of column blower creates condition.Boiler accessory machinery biserial configuration generating reliability is more single-row, and configuration is higher, but single-row configuration
It is higher than biserial configuration operational efficiency, equipment investment is saved, Some Domestic power plant starts using single-row configuration.Subsidiary engine is configured from biserial
Become single-row and simplify therrmodynamic system, and the executing agency of matched with blower, vibration pressure differential pressure, temperature-detecting device petrol station
The thermal controls such as the matched lash adjustment of various thermal control device air preheaters, temperature detection and fire alarm system speed detection system
Equipment and instrument are reduced to 1 set by 2 sets.
Subsidiary engine configuration becomes single-row from biserial, and the single-row configuration of subsidiary engine reduces number of devices, but after the single-row configuration of subsidiary engine,
Single device failure will cause compressor emergency shutdown, therefore, subsidiary engine it is single-row configuration to relaying configuration and control more stringent requirements are proposed.
Summary of the invention
Technology of the invention solves the problems, such as: overcoming the deficiencies of the prior art and provide and a kind of configures suitable for single subsidiary engine
Relay protection configuration method farthest avoids malfunction or tripping due to measuring cell or protective device from producing motor
It is raw to influence, improve the operational reliability and economy of power plant.
The technical solution of the invention is as follows: this relay protection configuration method for being suitable for single subsidiary engine configuration, installing three
Main protection and more set reserve protections are covered, three sets of main protections are current fault-clearing protective relays, electric current longitudinal differential
Protective device, magnetic balance longitudinal differential protection device, reserve protection include negative phase-sequence overcurrent protective device, zero-sequence over-current protection
Device, motor protection against overheat device, starting time and rotation-clogging protection device, motor overcurrent protection, overload are protected
Protection unit；Three are carried out according to the actuating quantity of three main protections and selects two logic judgments, and at least two be movement in three signals
It is just acted when signal, otherwise, is failure to actuate.
The present invention is protected using the more sets of configuration, carries out three basic principles for selecting two logic judgments, is avoided to the greatest extent
Since the malfunction or tripping of measuring cell or protective device have an impact motor, the operational reliability and economy of power plant are improved
Property.
Detailed description of the invention
What Fig. 1 showed the relay protection configuration method according to the present invention for being suitable for single subsidiary engine configuration three selects two logics to sentence
It is disconnected.
Specific embodiment
This relay protection configuration method for being suitable for single subsidiary engine configuration, installs three sets of main protections and more set standby are protected
Protection unit, three sets of main protections are current fault-clearing protective relays, electric current longitudinal differential protection device, magnetic balance longitudinal differential guarantor
Protection unit, reserve protection include negative phase-sequence overcurrent protective device, zero-sequence over-current protection device, motor protection against overheat device,
Starting time and rotation-clogging protection device, motor overcurrent protection, overload protection device (cannot select low-voltage to protect
Shield)；Three are carried out according to the actuating quantity of three main protections and selects two logic judgments, and at least two be action signal in three signals
When just acted, otherwise, be failure to actuate.
The present invention is protected using the more sets of configuration, carries out three basic principles for selecting two logic judgments, is avoided to the greatest extent
Since the malfunction or tripping of measuring cell or protective device have an impact motor, the operational reliability and economy of power plant are improved
Property.
Preferably, individual current transformer is installed at motor outlet to detect size of current, is protected for current quick-breaking
Protection unit provides measured value.
Preferably, optical current mutual inductor is installed at motor outlet and at neutral point respectively, the electric current of measurement is passed
Enter in longitudinal differential protection device.
Preferably, magnetic balance longitudinal differential protection device realizes magnetic using the arrangement of motor inlet wire and neutral point line
Balance longitudinal differential protection.
Preferably, current quick is acted into outlet signal, longitudinal differential protection movement outlet signal, magnetic balance respectively
Differential protection movement outlet signal is introduced into processing unit, is carried out three and is selected two logic judgments (as shown in Figure 1), judging result is made
Action element is transferred to for action signal.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, it is all according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, still belong to the present invention
The protection scope of technical solution.
Claims (5)
1. a kind of relay protection configuration method suitable for the configuration of single subsidiary engine, it is characterised in that: three sets main protections of installing with
More set reserve protections, three sets of main protections are current fault-clearing protective relays, electric current longitudinal differential protection device, magnetic balance
Longitudinal differential protection device, reserve protection include negative phase-sequence overcurrent protective device, zero-sequence over-current protection device, motor overheating
Protective device, starting time and rotation-clogging protection device, motor overcurrent protection, overload protection device；According to three
The actuating quantity of main protection carries out three and selects two logic judgments, is just moved when at least two be action signal in three signals
Make, otherwise, is failure to actuate；
Using the more set protections of configuration, three basic principles for selecting two logic judgments are carried out, are avoided due to measuring cell or protective device
Malfunction or tripping motor is had an impact, improve the operational reliability and economy of power plant.
2. the relay protection configuration method according to claim 1 for being suitable for single subsidiary engine configuration, it is characterised in that: electronic
Individual current transformer is installed to detect size of current in machine exit, provides measured value for current fault-clearing protective relays.
3. the relay protection configuration method according to claim 2 for being suitable for single subsidiary engine configuration, it is characterised in that: electronic
At machine exit and neutral point optical current mutual inductor is installed respectively, the electric current of measurement is passed to electric current longitudinal differential protection device
In.
4. the relay protection configuration method according to claim 3 for being suitable for single subsidiary engine configuration, it is characterised in that: magnetic balance
Longitudinal differential protection device realizes magnetic balance longitudinal differential protection using the arrangement of motor inlet wire and neutral point line.
5. the relay protection configuration method according to claim 4 for being suitable for single subsidiary engine configuration, it is characterised in that: respectively will
Current quick movement outlet signal, electric current longitudinal differential protection movement outlet signal, the differential pilot protection movement of magnetic balance
Outlet signal is introduced into processing unit, is carried out three and is selected two logic judgments, is transferred to action element for judging result as action signal
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020602.8A CN104538932B (en) | 2015-01-15 | 2015-01-15 | A kind of relay protection configuration method suitable for the configuration of single subsidiary engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020602.8A CN104538932B (en) | 2015-01-15 | 2015-01-15 | A kind of relay protection configuration method suitable for the configuration of single subsidiary engine |
Publications (2)
| Publication Number | Publication Date |
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| CN104538932A CN104538932A (en) | 2015-04-22 |
| CN104538932B true CN104538932B (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510020602.8A Active CN104538932B (en) | 2015-01-15 | 2015-01-15 | A kind of relay protection configuration method suitable for the configuration of single subsidiary engine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106207993A (en) * | 2016-08-02 | 2016-12-07 | 南京南瑞继保电气有限公司 | A kind of rapid protection system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE470295B (en) * | 1992-05-22 | 1994-01-10 | Asea Brown Boveri | Method and apparatus for preventing under-stabilization of longitudinal differential protection in case of external faults and current transformer saturation |
| CN103812086A (en) * | 2014-02-28 | 2014-05-21 | 中国能源建设集团广东省电力设计研究院 | High voltage electromotor protection system |
| CN104009452B (en) * | 2014-05-29 | 2016-10-12 | 天津大学 | A kind of protection scheme for direct-flow distribution system short trouble |
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2015
- 2015-01-15 CN CN201510020602.8A patent/CN104538932B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 发电厂大型电动机特殊保护配置及整定计算方法的研究及讨论;何智康;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑（月刊）》;20130615(第6期);3-48,56 * |
| 辅机单列配置采取的热工控制及保护措施;周世杰;《发电设备》;20140315;第28卷(第2期);104-106 * |
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