CN103532794A - Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment - Google Patents
Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment Download PDFInfo
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- CN103532794A CN103532794A CN201310518764.5A CN201310518764A CN103532794A CN 103532794 A CN103532794 A CN 103532794A CN 201310518764 A CN201310518764 A CN 201310518764A CN 103532794 A CN103532794 A CN 103532794A
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Abstract
The invention discloses a method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy (SDH) equipment, and belongs to the technical field of a power system and automation thereof. According to the method, the warning signals of the SDH equipment are accessed into a stable control device; the stable control device can acquire dynamic real-time information of multiple channels, which are communicated with the stable control device, after the warning signals of the SDH equipment are accessed into the stable control device, namely can analyze the combination of the warning signals of the SDH equipment in a real-time manner according to the relevant regulations of stable control service on communication code error, interruption and delay so as to judge whether the channels are in available states. Through the adoption of the method, the defect that the control measures of part of the stable control strategies cannot be executed reliably after the channels are in failure is avoided, and the reliability of a regional security control system is improved substantially.
Description
Technical field
The invention belongs to Power System and its Automation technical field, the present invention relates to more precisely a kind of tactful automatic switching method of steady control based on synchronizing digital hierarchy equipment alarm signal.
Background technology
In area stability control system (being region peace control system), between station, the general optical fiber that adopts communicates, A station and the B typical interior communication pattern of standing is: SDH (Synchronous Digital Hierarchy) (Synchronous Digital Hierarchy, hereinafter to be referred as the SDH) equipment at stability control device<-->2M multiplexed communications interface equipment<-->A station, A station<---optical fiber---SDH equipment<-->2M multiplexed communications interface equipment at-->B station<-->the B stability control device of standing.Be that stability control device will communicate by 2M multiplexed communications interface equipment and SDH equipment, SDH equipment arrives optical signal transmission by optical fiber the SDH equipment of offside, and then the 2M multiplexed communications interface equipment by offside is sent to information the stability control device of offside.
The control strategy of region peace control system is not all considered the situation of communication failure at present, when the scheduling meeting stability control device relevant to communication abnormality of stopping transport of ordering appears when abnormal in passage, if but find communication abnormality between stoppage in transit stability control device during this period of time in have the electric network fault of control measure, control measure may can not be carried out reliably because of communication abnormality, thereby cause system unstability.Stability control device conventionally only detects frame head postamble and verification and judges that whether passage is abnormal, whether abnormal standard is continuous a period of time (as 5 seconds) to can not receive signal in judgement communication, such criterion only can detect the catastrophe failure that passage interrupts and so on, for noncontinuity communication disruption or the error code of Millisecond, cannot detect.In fact, in electricity net safety stable automatics technical specification, clearly stipulated that the multiplexing fiber-optic passage error rate should be less than 10
-8, the control command that controlling center sends is no more than the communication performance indexs such as 20ms through multistage channel transfer to total time delay of afterbody actuating station device for optical-fibre channel.In addition also have other technical stipulation to be described in detail indexs such as error code degrade minute, Severely Errored Second, SES and residual BERs.
When current stabilization control device judges communication abnormality, all do not consider the performance index that these are relevant, the alarm signal of SDH equipment is combined and can obtain these performance index.Therefore the present invention considers the alarm signal of SDH equipment to be linked in the 2M multiplexed interface unit of stabilization control device for the performance of dynamic monitoring passage, and the main website of region stabilized control system can comprehensively implement the automatic switchover of control strategy according to the channel status of system thus.
Summary of the invention
The object of the invention is: overcome in prior art the defect that when communication abnormality appears in area stability control system, part control measure possibly cannot be carried out, provide a kind of running status automatic switchover system according to the alarm signal real-time judge passage of SDH (Synchronous Digital Hierarchy) (SDH) equipment surely to control tactful method.
Specifically, the present invention adopts following technical scheme to realize, and comprises the following steps:
1) according to the feature of target grid and contingency set, stability Calculation is carried out in the requirement based on power network safety operation, determines the Stable Control Strategy of target grid, is referred to as control strategy A;
2) route conditions of power telecom network synchronizing digital hierarchy equipment and optical-fibre channel in evaluating objects electrical network, critical passage group is determined in the consideration stable control measure of electrical network and the requirement to passage of stable business;
3) target grid is carried out under critical passage failure condition to time-domain-simulation, determine the Stable Control Strategy after critical passage lost efficacy, be referred to as control strategy B;
4) by the stability control device of the warning information access region peace control system of synchronizing digital hierarchy equipment, the control strategy A of target grid and control strategy B are deposited in Policy Table, during stability control device initialization, acquiescence adopts control strategy A simultaneously;
5) whether stability control device meets the requirement of time delay, error code and interruption according to the alarm signal of synchronizing digital hierarchy equipment and steady control business to the real-time judge passage that requires of dissimilar transmission channel, by delivering to higher level on channel status information, control plant stand simultaneously, if passage has, extremely proceed to step 6), otherwise proceed to step 7);
6) region peace control system controlling center judges whether to carry out the switching of control strategy according to the channel status information of system: when all control sub-stations are communicated by letter with controlling center while all losing efficacy, peace control system in region is out of service at once, when controlling center is during only with part control sub-station communication failure, put the to be switched sign of control strategy; When the channel part between control sub-station and actuating station lost efficacy, also put the to be switched sign of control strategy; When the passage between control sub-station and actuating station all lost efficacy, peace control system in region is out of service at once;
7) region is pacified control system controlling center according to real-time channel status, operational mode and is installed whether barring condition judges whether to change control strategy, if there is the to be switched sign of control strategy, the control strategy B that controlling center automatic search and current channel state and operational mode match, and current control strategy A is turned to control strategy B, if search, less than the control strategy matching, turns to control strategy A by current control strategy; If without the to be switched sign of control strategy, directly current control strategy is turned to control strategy A; Finally control strategy conversion command is sent to relevant control sub-station and actuating station;
8) whether region peace control system detection of grid there is the forecast failure in Policy Table, if fault having been detected occurs, stability control device carries out the search of traditional control strategy and implements then to turn to step 5) according to operational mode, fault type and channel status, if electrical network breaks down, does not directly turn to step 5) to carry out the communication of next round and search and the execution of electric network fault detection and control strategy.
Beneficial effect of the present invention is as follows: the present invention has gathered the warning information of SDH equipment for the real-time detection of region peace control system channel state, can be used for the quick switching of control strategy under channel failure condition, avoided channel failure rear section surely to control the defect that tactful control measure possibly cannot reliably be carried out, from having improved in essence the reliability of region peace control system.The warning information of stability control device of the present invention based on SDH equipment can be in several milliseconds the dynamic real time information of fast detecting passage, and the time of stability control device traditional detection channel failure generally needs about 5 seconds.
Accompanying drawing explanation
Fig. 1 is the flow chart one of the inventive method.
Fig. 2 is the flowchart 2 of the inventive method.
Embodiment
With reference to the accompanying drawings and in conjunction with example the present invention is described in further detail.
Fig. 1 and Fig. 2 are the flow charts of the inventive method.In Fig. 1, step 1) is according to the feature of target grid and contingency set, and stability Calculation is carried out in the requirement based on power network safety operation, determines the Stable Control Strategy of target grid, is referred to as control strategy A.
Step 2 in Fig. 1) route conditions of power telecom network synchronizing digital hierarchy equipment and optical-fibre channel in evaluating objects electrical network, critical passage group is determined in the consideration stable control measure of electrical network and the requirement to passage of stable business.
In Fig. 1, step 3) is carried out time-domain-simulation under critical passage failure condition to target grid, determines the Stable Control Strategy after critical passage lost efficacy, and is referred to as control strategy B.
In Fig. 1, step 4), by the stability control device of the warning information access region peace control system of synchronizing digital hierarchy equipment, deposits the control strategy A of target grid and control strategy B in Policy Table in simultaneously, and during stability control device initialization, acquiescence adopts control strategy A.
In Fig. 2, whether step 5) stability control device meets the requirement of time delay, error code and interruption according to the alarm signal of synchronizing digital hierarchy equipment and steady control business to the real-time judge passage that requires of dissimilar transmission channel, by delivering to higher level on channel status information, control plant stand and (on actuating station, deliver to control sub-station simultaneously, on control sub-station, deliver to controlling center), if passage has, extremely proceed to step 6), otherwise proceed to step 7).
In Fig. 2, step 6) region peace control system controlling center judges whether to carry out the switching of control strategy according to the channel status information of system: when all control sub-stations are communicated by letter with controlling center while all losing efficacy, peace control system in region is out of service at once, when controlling center is during only with part control sub-station communication failure, put the to be switched sign of control strategy; When the channel part between control sub-station and actuating station lost efficacy, also put the to be switched sign of control strategy; When the passage between control sub-station and actuating station all lost efficacy, peace control system in region is out of service at once.
In Fig. 1, step 7) region is pacified control system controlling center according to real-time channel status, operational mode and installs whether barring condition judges whether to change control strategy, if there is the to be switched sign of control strategy, the control strategy B that controlling center automatic search and current channel state and operational mode match, and current control strategy A is turned to control strategy B, if search, less than the control strategy matching, turns to control strategy A by current control strategy; If without the to be switched sign of control strategy, directly current control strategy is turned to control strategy A; Finally control strategy conversion command is sent to relevant control sub-station and actuating station.
In Fig. 1, whether step 8) region peace control system detection of grid there is the forecast failure in Policy Table, if fault having been detected occurs, stability control device carries out the search of traditional control strategy and implements then to turn to step 5) according to operational mode, fault type and channel status, if electrical network breaks down, does not directly turn to step 5) to carry out the communication of next round and search and the execution of electric network fault detection and control strategy.
Although the present invention with preferred embodiment openly as above, embodiment is not of the present invention for limiting.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to equally the present invention's protection range.Therefore should to take the application's the content that claim was defined be standard to protection scope of the present invention.
Claims (1)
1. the tactful automatic switching method of steady control based on synchronizing digital hierarchy equipment alarm signal, is characterized in that, comprises the steps:
1) according to the feature of target grid and contingency set, stability Calculation is carried out in the requirement based on power network safety operation, determines the Stable Control Strategy of target grid, is referred to as control strategy A;
2) route conditions of power telecom network synchronizing digital hierarchy equipment and optical-fibre channel in evaluating objects electrical network, critical passage group is determined in the consideration stable control measure of electrical network and the requirement to passage of stable business;
3) target grid is carried out under critical passage failure condition to time-domain-simulation, determine the Stable Control Strategy after critical passage lost efficacy, be referred to as control strategy B;
4) by the stability control device of the warning information access region peace control system of synchronizing digital hierarchy equipment, the control strategy A of target grid and control strategy B are deposited in Policy Table, during stability control device initialization, acquiescence adopts control strategy A simultaneously;
5) whether stability control device meets the requirement of time delay, error code and interruption according to the alarm signal of synchronizing digital hierarchy equipment and steady control business to the real-time judge passage that requires of dissimilar transmission channel, by delivering to higher level on channel status information, control plant stand simultaneously, if passage has, extremely proceed to step 6), otherwise proceed to step 7);
6) region peace control system controlling center judges whether to carry out the switching of control strategy according to the channel status information of system: when all control sub-stations are communicated by letter with controlling center while all losing efficacy, peace control system in region is out of service at once, when controlling center is during only with part control sub-station communication failure, put the to be switched sign of control strategy; When the channel part between control sub-station and actuating station lost efficacy, also put the to be switched sign of control strategy; When the passage between control sub-station and actuating station all lost efficacy, peace control system in region is out of service at once;
7) region is pacified control system controlling center according to real-time channel status, operational mode and is installed whether barring condition judges whether to change control strategy, if there is the to be switched sign of control strategy, the control strategy B that controlling center automatic search and current channel state and operational mode match, and current control strategy A is turned to control strategy B, if search, less than the control strategy matching, turns to control strategy A by current control strategy; If without the to be switched sign of control strategy, directly current control strategy is turned to control strategy A; Finally control strategy conversion command is sent to relevant control sub-station and actuating station;
8) whether region peace control system detection of grid there is the forecast failure in Policy Table, if fault having been detected occurs, stability control device carries out the search of traditional control strategy and implements then to turn to step 5) according to operational mode, fault type and channel status, if electrical network breaks down, does not directly turn to step 5) to carry out the communication of next round and search and the execution of electric network fault detection and control strategy.
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| CN114745165A (en) * | 2022-03-23 | 2022-07-12 | 国网辽宁省电力有限公司电力科学研究院 | Distributed intelligent safety and stability control system architecture method for power grid |
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| CN111600756A (en) * | 2020-05-14 | 2020-08-28 | 南瑞集团有限公司 | Communication interface device, system and method for control system in-loop real-time simulation experiment |
| CN114745165A (en) * | 2022-03-23 | 2022-07-12 | 国网辽宁省电力有限公司电力科学研究院 | Distributed intelligent safety and stability control system architecture method for power grid |
| CN114745165B (en) * | 2022-03-23 | 2024-01-09 | 国网辽宁省电力有限公司电力科学研究院 | Power grid distributed intelligent safety and stability control system architecture method |
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