CN106684840B - Method is exported when direct current protecting is unavailable in a kind of direct current polar control system - Google Patents
Method is exported when direct current protecting is unavailable in a kind of direct current polar control system Download PDFInfo
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- CN106684840B CN106684840B CN201710047893.9A CN201710047893A CN106684840B CN 106684840 B CN106684840 B CN 106684840B CN 201710047893 A CN201710047893 A CN 201710047893A CN 106684840 B CN106684840 B CN 106684840B
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- Prior art keywords
- direct current
- current protecting
- unavailable
- protecting device
- control system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
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- Direct Current Feeding And Distribution (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses export method when direct current protecting in a kind of direct current polar control system is unavailable; when the main system of polar control system detects that each set direct current protecting device is unavailable; other than reporting itself " each set direct current protecting device is unavailable " software fault, the also standby usage system switching of progress polar control system.When two sets of polar control systems judge that each set direct current protecting device is unavailable, side generates pole control monitoring tripping.To improve the reliability that polar control system detects each set direct current protecting device available mode, the generation for the available mode of each set direct current protecting device being judged incorrectly and being caused due to covering system faults itself polar control system list direct current system mistrip is avoided.
Description
Technical field
The present invention relates to electric system high-voltage dc transmission electrical domains, more particularly to direct current in a kind of direct current polar control system
Method is exported when protecting unavailable.
Background technique
Direct current protecting reacts the exception or malfunction of direct current system equipment, fast implement exception or faulty equipment every
From avoiding the expansion of exception or failure in direct current system, there is important meaning to the safe and stable operation of DC transmission engineering
Justice.
There are many redundant configuration modes for direct current protecting in DC transmission engineering, mainly include that two from three configures, dual is matched
It sets.
So-called direct current protecting two from three configuration refers to that DC transmission engineering is identical independent straight configured with three sets of functions
Flow protective device.According to the available situation of three sets of direct current protecting devices, several situations are contained：When three sets of direct current protecting devices are equal
When available, as long as three sets of direct current protectings or in which two sets of protection acts, protection outlet, the two from three of meaning；When three sets of direct currents are protected
When only having two sets can be used in protection unit, as long as two sets of protections or in which a set of protection act, protection outlet, the two of meaning take one；
When there was only a set of available in three sets of direct current protecting devices, as long as the set protection act, protection outlet, one of meaning takes one.
So-called direct current protecting duplicate system retrofit refers to that DC transmission engineering is configured with two sets of independent direct current protecting devices,
When a set of direct current protecting device action, protection is just exported.When wherein a set of direct current protecting device exception or unavailable failure, remain
Remaining a set of direct current protecting device can guarantee the available of direct current protecting function.
Direct current pole controls the configuration mode for mostly using dual, and a set of control control system is on duty under normal conditions
The main system of state, another set of control system are the back-up system in stand-by state.When main system exception or failure are unavailable
When, former back-up system is switched to main system.
Direct current protecting is advantageous in that by the way of redundant configuration when part of direct current protecting device is unavailable,
Guarantee the available of direct current protecting function, improves the reliability of direct current protecting.For the safety and stability fortune for guaranteeing DC transmission engineering
Row, DC transmission engineering does not allow the case where unprotect operation occur, when all direct current protecting devices are unavailable, it is necessary to stop
Transport direct current system.
For the available mode for detecting each set direct current protecting device, it is equal respectively to cover the whether available status signal of direct current protecting device
It send to two sets of direct current polar control systems of duplicate system retrofit.It is whether available to each set direct current protecting device by polar control system
State is judged, and starts corresponding outlet logic.
Currently, the main system list set system detection when DC transmission engineering polar control system is equal to each set direct current protecting device
When unavailable, i.e., the control of starting pole monitors trip avoidance function, will exist since the failure cause of polar control system itself is to each set
The available mode of direct current protecting device judges incorrectly and causes the major hidden danger of direct current system mistrip, i.e., in direct current protecting device
In available situation, due to hardware and software failure of polar control system itself etc., each set direct current protecting device is mistakenly judged
It is unavailable, lead to direct current system mistrip.
Summary of the invention
Method is exported when it is an object of the invention to propose that direct current protecting is unavailable in a kind of direct current polar control system, with
The failure cause for covering system itself due to polar control system list is avoided to judge incorrectly the available mode of each set direct current protecting device
And lead to the generation of direct current system mistrip.
In order to solve the above-mentioned technical problem, technical scheme is as follows：
Method is exported when direct current protecting is unavailable in a kind of direct current polar control system, is included the following steps：
A, the available signal that DC transmission engineering is respectively covered to direct current protecting device itself formation send the two of duplicate system retrofit
Cover polar control system；
B, the main system of two sets of polar control systems and back-up system carry out the available mode of each set direct current protecting device
Judgement；
C, when main system judges that each set direct current protecting device is unavailable, report " each set direct current protecting device is unavailable " is soft
Part failure simultaneously carries out polar control system switching, and former main system is switched to back-up system, and former back-up system is switched to main system；
Main system judge each set direct current protecting device it is unavailable for it is no when, do not report that " each set direct current protecting device can not
With " software fault, without polar control system switch；
D, when back-up system judges that each set direct current protecting device is unavailable, report " each set direct current protecting device is unavailable "
Software fault.Back-up system judge each set direct current protecting device it is unavailable for it is no when, do not report that " each set direct current protecting device is not
Can use " software fault；
E, when the main system after switching (former back-up system) equally judges that each set direct current protecting device is unavailable, two sets
Polar control system is all made that each not available judgement of set direct current protecting device, and " each set direct current protecting device can not for confirmation
With ", starting polar control system monitoring tripping；
F, the main system after switching (former back-up system) judge each set direct current protecting device it is unavailable for it is no when, two sets
Polar control system is unavailable to each set direct current protecting device to be made that different judgements, does not confirm " each set direct current protecting device
It is unavailable ", do not start polar control system monitoring tripping.
The DC transmission engineering direct current protecting is configured using two from three or the redundant configuration of dual, and the control of direct current pole is adopted
With dual redundant configuration.
The present invention provides method is exported when direct current protecting in a kind of direct current polar control system is unavailable, it is when pole controls
When main system list set system detection of uniting is unavailable to each set direct current protecting device, in addition to that reports itself " respectively covers direct current protecting
Device is unavailable " outside software fault, the switching of polar control system is also carried out, spare polar control system is switched to.When two sets
When polar control system detects that each set direct current protecting device is unavailable, side generates pole control monitoring tripping.It avoids due to pole
The failure cause of control system list set system itself judges incorrectly to the available mode of each set direct current protecting device and leads to direct current
The generation of system mistrip.
Compared with conventional art, beneficial effect brought by the present invention has：
The characteristics of making full use of direct current polar control system dual redundant configuration covers system in polar control system main system list
When detecting that each set direct current protecting device is unavailable, in addition to reporting itself " each set direct current protecting device is unavailable " software event
Barrier is outer, also carries out the switching of polar control system, switches to spare polar control system.When former spare polar control system is similarly examined
Measure each set direct current protecting device it is unavailable when, side generate pole control monitoring tripping.It improves polar control system and detects each set
The reliability of direct current protecting device available mode avoids straight to each set due to covering system faults itself polar control system list
The available mode of stream protective device judges incorrectly and causes the generation of direct current system mistrip.
Detailed description of the invention
Fig. 1 is the program chart of the embodiment of the present invention.
Specific embodiment
The contents of the present invention are described in further details with reference to the accompanying drawings and detailed description.
Embodiment：
As shown in Figure 1, in case where the configuration of direct current protecting device two from three, direct current in a kind of direct current polar control system
Method is exported when protecting unavailable, is included the following steps：
A, the available signal that three sets of direct current protecting devices itself are formed is sent to two sets of polar control systems of duplicate system retrofit.
B, the main system of two sets of polar control systems and back-up system carry out the available mode of three sets of direct current protecting devices
Judgement.
C, it when main system judges that three sets of direct current protecting devices are unavailable, reports " three sets of direct current protecting devices are unavailable "
Software fault；When back-up system judges that three sets of direct current protecting devices are unavailable, " three sets of direct current protecting devices are not for same report
Can use " software fault.
D, when main system judges that three sets of direct current protecting devices are unavailable, in addition to " three sets of direct current protecting devices are not for report
Can use " outside software fault, and polar control system active-standby switch is carried out, former main system is switched to back-up system, and former back-up system is cut
It is changed to main system.
E, when the main system after switching (former back-up system) equally judges that three sets of direct current protecting devices are unavailable, two sets
Polar control system is all made that the not available judgement of three sets of direct current protecting devices, and " three sets of direct current protecting devices can not for confirmation
With ", starting polar control system monitoring tripping.
F, the main system after switching (former back-up system) judge three sets of direct current protecting devices it is unavailable for it is no when, two sets
Polar control system is unavailable to three sets of direct current protecting devices to be made that different judgements, does not confirm " three sets of direct current protecting devices
It is unavailable ", do not start polar control system monitoring tripping.
The method of the present invention is described in detail below：
By three sets of direct current protecting devices of DC transmission engineering itself formed available signal be respectively designated as DCP1_OK,
DCP2_OK, DCP3_OK, respectively indicate first set, second set, third set direct current protecting device whether can be used.DCP1_OK,
DCP2_OK, DCP3_OK send two sets of polar control systems of duplicate system retrofit, including main system and back-up system.
When n-th (n=1,2,3) set direct current protecting device is available, which send the letter of polar control system
Number DCPn_OK sets 1；When n-th (n=1,2,3) set direct current protecting device is unavailable, which send pole control system
The signal DCPn_OK of system sets 0.
In two sets of polar control systems, including main system and back-up system, by a nor gate (NOR) to DCP1_OK,
Tri- signals of DCP2_OK, DCP3_OK are handled, and one " three sets of direct current protecting devices are unavailable (3DCP_NOK) " is formed
Signal.
The input/output relation of nor gate (NOR) is：When each input is 0, exporting is 1；Respectively inputting at least one is 1
When, exporting is 0.
When DCP1_OK, DCP2_OK, DCP3_OK are that 0,3DCP_NOK signal sets 1, polar control system judges three sets of direct currents
Protective device is unavailable；If at least one is that 1,3DCP_NOK signal sets 0 by DCP1_OK, DCP2_OK, DCP3_OK, pole control
System processed judges that three sets of direct current protecting devices are at least a set of available.
Any set of system of two sets of polar control systems is either in main system state or back-up system state, if
Judge that three sets of direct current protecting devices are unavailable, i.e. report " three sets of direct current protecting devices are unavailable " software fault.
1. when polar control system main system judge three sets of direct current protecting devices it is unavailable for it is no when, do not report " three sets of direct currents
Protective device is unavailable " software fault, without polar control system switch；When polar control system main system judges three sets of direct currents
When protective device is unavailable, " three sets of direct current protecting devices are unavailable " software fault is reported, and by " three sets of direct current protecting devices
It is unavailable " fault-signal is sent to back-up system, while carrying out polar control system switching, and former main system is switched to spare system
System, former back-up system are switched to main system.
2. the main system (former back-up system) after switching judges that three sets of direct current protecting devices are unavailable, " three sets are confirmed
Direct current protecting device is unavailable ", starting polar control system monitoring tripping；Main system (former back-up system) judgement after switching
Three sets of direct current protecting devices it is unavailable for it is no when, do not confirm " three sets of direct current protecting devices are unavailable ", do not start pole control
System monitoring tripping.
3. when polar control system only has main system is a set of running, when another set of system exception or failure lead to unavailable,
Main system judges that three sets of direct current protecting devices are unavailable, can not carry out the switching of main preparation system, and main system directly initiates pole control
System monitoring tripping processed.
The characteristics of making full use of direct current polar control system dual redundant configuration covers system in polar control system main system list
When detecting that each set direct current protecting device is unavailable, in addition to reporting itself " each set direct current protecting device is unavailable " software event
Barrier is outer, also carries out the switching of polar control system, switches to spare polar control system.When former spare polar control system is similarly examined
Measure each set direct current protecting device it is unavailable when, side generate pole control monitoring tripping.It improves polar control system and detects each set
The reliability of direct current protecting device available mode avoids straight to each set due to covering system faults itself polar control system list
The available mode of stream protective device judges incorrectly and causes the generation of direct current system mistrip.
Above-listed detailed description is illustrating for one of present invention possible embodiments, and the embodiment is not to limit
The scope of the patents of the invention, all equivalence enforcements or change without departing from carried out by the present invention, is intended to be limited solely by the scope of the patents of this case
In.
Claims (2)
- Method is exported when 1. direct current protecting is unavailable in a kind of direct current polar control system, which is characterized in that is included the following steps：A, the available signal that DC transmission engineering is respectively covered to direct current protecting device itself formation send two sets of poles of duplicate system retrofit Control system；B, the main system of two sets of polar control systems and back-up system judge the available mode of each set direct current protecting device；C, when main system judges that each set direct current protecting device is unavailable, report " each set direct current protecting device is unavailable " software Failure；When back-up system judges that each set direct current protecting device is unavailable, same report " can not by each set direct current protecting device With " software fault；D, when main system judges that each set direct current protecting device is unavailable, in addition to report " each set direct current protecting device is unavailable " Outside software fault, and polar control system active-standby switch is carried out, former main system is switched to back-up system, based on former back-up system switching System；E, when the main system after switching equally judges that each set direct current protecting device is unavailable, two sets of polar control systems are all made Each not available judgement of set direct current protecting device, confirmation " each set direct current protecting device is unavailable ", starting pole control system System monitoring tripping；F, the main system after switching judge each set direct current protecting device it is unavailable for it is no when, two sets of polar control systems are to each set Direct current protecting device is unavailable to be made that different judgements, does not confirm " each set direct current protecting device is unavailable ", does not start Polar control system monitoring tripping.
- Method is exported when 2. direct current protecting is unavailable in direct current polar control system according to claim 1, feature exists In the DC transmission engineering respectively covers direct current protecting device using two from three configuration or the redundant configuration of dual, two sets of pole controls System processed uses dual redundant configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710047893.9A CN106684840B (en) | 2017-01-20 | 2017-01-20 | Method is exported when direct current protecting is unavailable in a kind of direct current polar control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710047893.9A CN106684840B (en) | 2017-01-20 | 2017-01-20 | Method is exported when direct current protecting is unavailable in a kind of direct current polar control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106684840A CN106684840A (en) | 2017-05-17 |
| CN106684840B true CN106684840B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710047893.9A Active CN106684840B (en) | 2017-01-20 | 2017-01-20 | Method is exported when direct current protecting is unavailable in a kind of direct current polar control system |
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| CN112816805A (en) * | 2019-11-15 | 2021-05-18 | 许继集团有限公司 | Flexible direct current converter valve control system and over-current detection method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102856983B (en) * | 2012-09-29 | 2014-08-27 | 南京南瑞继保电气有限公司 | Method for monitoring and processing faults of ultrahigh-voltage direct current redundancy pole control devices |
| CN103197172A (en) * | 2013-03-05 | 2013-07-10 | 华北电力大学 | Direct current protection system reliability assessment method in 'two from three' mode |
| CN103219798B (en) * | 2013-03-25 | 2015-03-25 | 国网智能电网研究院 | Direct-current transmission converter valve control protection system and control protection method thereof |
| US10054646B2 (en) * | 2014-08-19 | 2018-08-21 | Astronics Advanced Electronic Systems Corp. | High reliability power supply configuration and testing |
| CN105529822A (en) * | 2014-09-28 | 2016-04-27 | 国家电网公司 | Redundancy control protection system |
| CN204835700U (en) * | 2015-09-01 | 2015-12-02 | 国家电网公司 | Direct current transmission controlling means switched systems |
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| CN106684840A (en) | 2017-05-17 |
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