CN107703926A - A kind of network system protects fast cut back multi-point control time method of testing - Google Patents
A kind of network system protects fast cut back multi-point control time method of testing Download PDFInfo
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- CN107703926A CN107703926A CN201711113799.5A CN201711113799A CN107703926A CN 107703926 A CN107703926 A CN 107703926A CN 201711113799 A CN201711113799 A CN 201711113799A CN 107703926 A CN107703926 A CN 107703926A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The invention discloses a kind of network system to protect fast cut back multi-point control time method of testing; when reaching cutting load condition; association's control central station issues cutting load order; cutting load order is transferred sequentially to control centre station, control sub-station and net load interaction terminal successively, and net load interaction terminal cuts off corresponding interruptible load user's branch switch according to cutting load order；During cutting load, record association control central station issues the cutting load order moment, control centre station receives the cutting load order moment, control sub-station receives the cutting load order moment, net load interaction terminal receives cutting load moment, interruptible load user's branch switch tripping moment and user side load current and falls zero moment, and the difference of corresponding event time is delay of control.The principle of the invention is simple, it is only necessary to a small amount of tester, can effectively the checking system protection control strategy of fast cut back, channel information, the accuracy of control function, optimize the cooperation between each subsystem, improve the overall operation performance of system.
Description
Technical field
The present invention relates to a kind of network system to protect fast cut back multi-point control time method of testing, belongs to electric power
System protection control technology field.
Background technology
State Grid Corporation of China proposed to accelerate research high-intelligentization, the protecting electrical power system of new generation of high security in recent years
Control technology, take and send end cutting machine, receiving end spatial load forecasting, more direct currents coordination control and the quick control of phase modifier, pumped storage etc. to arrange
Apply, build bulk power grid safety comprehensive defense system.Jiangsu Power Grid enters the extra-high voltage epoch and welcomes great development, will form " six friendships
Four is straight " general layout, operation of power networks characteristic generation profound change, there is an urgent need to innovate pipe diameter design, strengthen technical support, utilize battalion
Interruptible load is sold, realizes that extra-high voltage direct-current failure fast accurate is disposed, it is ensured that the safe and stable operation of large receiving-end grid.
Extensive source net lotus close friend's interaction systems are both to realize that the indispensability of bulk power grid security developments is arranged the clean energy resource epoch
Apply, the important measure that even more global energy Internet Strategy lands in provincial company.In (the important contact of extra-high voltage grid failure
The locking of line failure direct current) when, by the spatial load forecasting means of " system protection level ", effectively suppress frequency and decline, it is ensured that bulk power grid
Safe and stable operation；Solves the problems such as out-of-limit electric network swim and system reserve deficiency using exact load control measure, it is ensured that electricity
Net orderly reliable power supply.The mode of interruptible load control " friendly interactive " is taken, bulk power grid disturbance is significantly reduced and society is produced
Raw influence.
Construction for this extensive source net lotus close friend's interaction systems is brought into schedule.But lack the effective time in reality
Measuring technology means fully verify the function of extensive source net lotus close friend's interaction systems construction, so as to finally meet extra-high voltage
DC bipolar block failure causes the disposal requirement of power shortage.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of network system to protect fast cut back multi-point control
Time test method processed.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of network system protects fast cut back multi-point control time method of testing, it is characterised in that：Reach cut it is negative
During lotus condition, association's control central station issues cutting load order, and cutting load order is transferred sequentially to control centre station, control successively
Stand and net load interaction terminal, net load interaction terminal cut off corresponding interruptible load user's branch switch according to cutting load order；
During cutting load, record association control central station issues cutting load order moment t1, control centre station receives the cutting load order moment
T2, control sub-station receive cutting load order moment t3, net load interaction terminal receives cutting load moment t4, interruptible load user
Branch switch tripping moment t5 and user side load current fall zero moment t6, and the difference of corresponding event time is delay of control.
Before cutting load, it is necessary to detect association control central station stood to control centre, control centre station arrive control sub-station and
Whether control sub-station is normal to the passage between net load interaction terminal.
During cutting load, to carry out it is following test,
Whether test association control central station correctly sends cutting load order to control centre station；
Whether test control center station correctly sends cutting load order to control sub-station；
Whether testing and control substation correctly sends cutting load order to net load interaction terminal；
The cutting load order whether response control substation is sent of Test Network lotus interactive terminal；
Sent on Test Network lotus interactive terminal control sub-station can cutting load amount it is whether correct；
Testing and control substation Shang Song control centres station can cutting load amount it is whether correct；
Excision load principle be：
A, interruptible load is removed according to default priority slicing；
B, the load that definition needs to cut off is Pcut, can cutting load be divided into N layers, can cutting load amount be P=P1+…+Pi
+…+PN, i is integer, 1≤i≤N；IfJ is integer, and 1≤j≤N, then what is actually cut off is negative
Lotus amount is
Association's control central station, control centre station and control sub-station are using two-shipper mutually for control system.
Reception that record issues cutting load order moment t1 by association's control central station of electric B codes time service, control centre stands is cut negative
Lotus order moment t2, control sub-station receive cutting load order moment t3, net load interaction terminal receives cutting load moment t4, utilize
Time synchronized instrument measures interruptible load user branch switch tripping moment t5, measures user side using fault oscillograph and bears
The charged zero moment t6 that pours off.
The beneficial effect that the present invention is reached：The principle of the invention is simple, it is only necessary to a small amount of tester, you can realizes safety
Reliably, precision reaches Millisecond, can effectively the checking system protection control strategy of fast cut back, channel information, control function
Accuracy, optimize the cooperation between each subsystem, improve the overall operation performance of system.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is experiment process stage by stage；
Fig. 3 is excision load schematic diagram；
Fig. 4 is the schematic diagram that interruptible load user's branch switch tripping moment t5 is measured with time synchronized instruments；
Fig. 5 is existing extensive source net lotus close friend's interaction systems Organization Chart.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this hair
Bright technical scheme, and can not be limited the scope of the invention with this.
As shown in figure 1, a kind of network system protection fast cut back multi-point control time method of testing, is specially：Reach
During to cutting load condition, association's control central station issues cutting load order, cutting load order be transferred sequentially to successively control centre station,
Control sub-station and net load interaction terminal, net load interaction terminal cut off corresponding interruptible load user's branch according to cutting load order
Switch；During cutting load, record is controlled central station by the association of electric B codes time service and issued in cutting load order moment t1, control
Center station receives cutting load order moment t2, control sub-station receives cutting load order moment t3, net load interaction terminal receives cutting load
Moment t4, interruptible load user branch switch tripping moment t5 is measured using time synchronized instrument, is surveyed using fault oscillograph
Obtain user side load current and fall zero moment t6, the difference of corresponding event time is delay of control, such as：T6-t1 is that system protection is cut
The time required to burden functional is realized.
Before cutting load, it is necessary to detect association control central station stood to control centre, control centre station arrive control sub-station and
Whether control sub-station is normal to the passage between net load interaction terminal.
During cutting load, following test is carried out：
Whether test association control central station correctly sends cutting load order to control centre station；
Whether test control center station correctly sends cutting load order to control sub-station；
Whether testing and control substation correctly sends cutting load order to net load interaction terminal；
The cutting load order whether response control substation is sent of Test Network lotus interactive terminal；
Sent on Test Network lotus interactive terminal control sub-station can cutting load amount it is whether correct；
Testing and control substation Shang Song control centres station can cutting load amount it is whether correct；
Whether test control center station can correctly have access to the action event information of each substation.
Association's control central station, control centre station and control sub-station are using two-shipper mutually for control system, two-shipper mutually standby control
The Controlling principle of system can be divided into：Two take two principles and two to take a principle.Such as control centre's station two sets of control systems of A, B；Two
Two principles are taken, association's control two sets of control systems of central station are working properly, mutual communication is normal, two sets of control centre station control system
Working properly, mutual communication of uniting is normal, and all receives the cutting load order that association's control central station is sent, and cutting load just acts；When
(assist the control a set of control system of central station different when only a set of control system receives the cutting load order that association's control central station is sent
Often/stop transport, or the arbitrarily a set of stoppage in transit/abnormal obliteration of two sets of control systems), whole cutting load is failure to actuate, and can only lean on control centre
Load Shedding According To Frequency of standing acts；Two take a principle, and control centre station is in any a set of stoppage in transit of two sets of control systems or abnormal obliteration feelings
Under condition, only after the another set maintenance pressing plate of control system input of normal operation, the control system of normal operation, which just releases, closes
Lock, Controlling principle are changed to two and take a principle, and when control centre station takes two to take a mode to run, the double sets of control sub-station control system
When system is all normal, the signal of another set control system maintenance is issued control sub-station by the control system of control centre's station normal operation,
Control sub-station takes a control mode to run by two immediately.
Before cutting load, two-shipper will mutually be tested stage by stage for control system, as shown in Fig. 2 such as two sets of A, B
Control system, need cutting load to be divided into 6 layers, first carry out A control system experiments；B controls are carried out again after the completion of the experiment of A control systems
System test；Finally A, B control system are tested simultaneously.
Excision load principle be：
A, interruptible load is removed according to default priority slicing；
B, the load that definition needs to cut off is Pcut, can cutting load be divided into N layers, can cutting load amount be P=P1+…+Pi
+…+PN, i is integer, 1≤i≤N；IfJ is integer, and 1≤j≤N, then what is actually cut off is negative
Lotus amount is
As shown in figure 3, can cutting load be divided into 6 layers, it is necessary to which the load of excision can cut capacity positioned at one, two, three, four layer
Sum and one, two, three, four, five layer can be cut between capacity sum, then directly cut off in excision
As shown in figure 4, interruptible load user's branch switch tripping moment t5 principle is measured with time synchronized instruments
Scheme, there are a pair of auxiliary contacts for being available for external time synchronized instruments on net load interaction terminal panel, corresponding internal circuit diagram is one
Relay coil contact switch K, relay coil contact switch K is normally opened when not receiving cutting load instruction, when net load interaction terminal
Relay coil contact switch K is just closed when receiving cutting load instruction, by external time synchronized instrument (soe precision),
Can measures the time signal length (an of short duration trigger pulse rising edge, precision ms).
In order to further illustrate the above method, so that wood shows disrespect on central station as an example, the extensive source net lotus of East China is friendly mutually
Dynamic system concrete structure is as shown in Figure 5.Extensive source net lotus close friend interaction systems include friendly interactive precisely cutting load and system
Two big system of fast cut back is protected, wherein system protection fast cut back system includes East China association control central station, the Suzhou change of current
Stand, the flat current conversion station of political affairs, wood show disrespect on central station (control centre station), Mu Du substations, granary substation, Yushan substation, Wujiang substation (four
Individual control sub-station), transformer station, 2M special data channels, user side net load interaction terminal etc. nearby, realize that Millisecond (protect by system
Protect level) fast cut back ability.
Use the detailed process of the above method for：
1) check whether the passage that East China association control central station and wood are shown disrespect between central station is normal, check that wood shows disrespect on central station point
Whether the passage not between Mu Du substations, granary substation, Yushan substation, Wujiang substation is normal；Check wood show disrespect on, granary, jade
Whether mountain, Wujiang substation and passage between each net load interaction terminal are normal；
2) when reaching cutting load condition, East China association control central station issues cutting load order and stood to Mu Du control centres, and wood is shown disrespect on
Control centre station issues cutting load order to Mu Du substations, granary substation, Yushan substation and Wujiang substation, Mu Du substations, granary
Substation, Yushan substation and Wujiang substation issue cutting load order and give each net load interaction terminal respectively, net load interaction terminal according to
The corresponding interruptible load user's branch switch of cutting load order excision；During cutting load, record passes through electric B codes time service
Association's control central station issues cutting load order moment t1, control centre station receives cutting load order moment t2, control sub-station is received and cut
Load command moment t3, net load interaction terminal receive cutting load moment t4, and measuring interruptible load using time synchronized instrument uses
Family branch switch tripping moment t5, measure user side load current using fault oscillograph and fall zero moment t6, corresponding event time
Difference be delay of control, t6-t1 is the time required to system protection cutting load function is realized.
In the example exemplified by cutting 5 layers of load (totally 6 layers of load), during cutting load, test Mu Du substations, granary
Stand, sent on Yushan substation and Wujiang substation wood show disrespect on central station can cutting load amount it is whether correct, as a result such as following table one and the institute of table two
Show：
One each layer of table can cutting load amount
That send that wood shows disrespect on central station on the substation of table two can cutting load amount
Conclusion：That send that wood shows disrespect on central station on Mu Du substations, granary substation, Yushan substation and Wujiang substation can cutting load amount
Correctly.
Test wood show disrespect on central station whether correctly sent to Mu Du substations, granary substation, Yushan substation and Wujiang substation cut it is negative
Lotus is ordered, as a result as shown in following table three：
The wood of table three shows disrespect on central station and sends cutting load order to substation
| Numbering | Project | Whether central station action is correct |
| 6.32 | 17:03:14:061 moment acted | √ |
| 6.33 | Issued to Mu Du substations and cut 5 layers of load command | √ |
| 6.34 | Issued to granary substation and cut 5 layers of load command | √ |
| 6.35 | Issued to Yushan substation and cut 5 layers of load command | √ |
| 6.36 | Issued to Wujiang substation and cut 5 layers of load command | √ |
Conclusion：Wood show disrespect on central station correctly sent to Mu Du substations, granary substation, Yushan substation and Wujiang substation cut 5 layers it is negative
Lotus excision order, each substation also correctly responds the order.
Brief summary：According to actual operating mode be 4 levels of substation the 1st can cutting load amount 18.01MW, the 2nd level can cut it is negative
Lotus amount 27.3MW, the 3rd level can cutting load amount 7.25MW, the 4th level can cutting load amount 5.72MW, the 5th level can cutting load amount
24.81MW, the 6th level can cutting load amount 11.76MW, and it is all can cutting load amount 94.85MW, and set need cutting load
Capacity 70MW, meetFinal actual excision 83.09MW loads, fast cut back instruction issue correct, net lotus
Interactive terminal response substation cutting load instruction is correct.
Test is shown disrespect on central station since wood and received East China association control central station issues cutting load order to interruptible load user
The time t5-t2 of branch switch tripping, as a result as shown in following table four：
Table four arrives the time of interruptible load user's branch switch tripping
Four substations choose second line of a couplet user and complete the test of whole group actuation time respectively, and the testing time is to show disrespect on central station from wood
Reception East China association control central station issues cutting load order and starts the time to interruptible load user's branch switch tripping：Yushan
Substation 78ms, Mu Du substation 68ms, Wujiang substation 57ms, granary substation 69ms.
34 user's branch switches tripping operation average motion time that accurate cutting load is cut in fact is 63ms, while according to system
Overall plan, the control Central Policy generation of East China association and instruction transmission time 150ms are built, so system protection fast cut back
Whole group actuation time is most less than 300ms soon, meets system protection fast cut back system whole group actuation time less than 650ms's
Technical requirements.
In summary, above method principle is simple, it is only necessary to a small amount of tester, you can realizes that securely and reliably precision reaches
Millisecond, can effectively the checking system protection control strategy of fast cut back, channel information, the accuracy of control function, optimization
Cooperation between each subsystem, improve the overall operation performance of system.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and become
Shape also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of network system protects fast cut back multi-point control time method of testing, it is characterised in that：Reach cutting load
During condition, association's control central station issues cutting load order, cutting load order be transferred sequentially to successively control centre station, control sub-station and
Net load interaction terminal, net load interaction terminal cut off corresponding interruptible load user's branch switch according to cutting load order；It is negative cutting
During lotus, record association control central station issues cutting load order moment t1, control centre station receives cutting load order moment t2, control
System station receives cutting load order moment t3, net load interaction terminal receives cutting load moment t4, interruptible load user's branch is opened
Close tripping moment t5 and user side load current falls zero moment t6, the difference of corresponding event time is delay of control.
2. a kind of network system protection fast cut back multi-point control time method of testing according to claim 1, its
It is characterised by：Before cutting load, it is necessary to detect association control central station stood to control centre, control centre station arrive control sub-station and
Whether control sub-station is normal to the passage between net load interaction terminal.
3. a kind of network system protection fast cut back multi-point control time method of testing according to claim 1, its
It is characterised by：During cutting load, to carry out it is following test,
Whether test association control central station correctly sends cutting load order to control centre station；
Whether test control center station correctly sends cutting load order to control sub-station；
Whether testing and control substation correctly sends cutting load order to net load interaction terminal；
The cutting load order whether response control substation is sent of Test Network lotus interactive terminal；
Sent on Test Network lotus interactive terminal control sub-station can cutting load amount it is whether correct；
Testing and control substation Shang Song control centres station can cutting load amount it is whether correct.
4. a kind of network system protection fast cut back multi-point control time method of testing according to claim 1, its
It is characterised by：Excision load principle be：
A, interruptible load is removed according to default priority slicing；
B, the load that definition needs to cut off is Pcut, can cutting load be divided into N layers, can cutting load amount be P=P1+…+Pi+…+PN,
I is integer, 1≤i≤N；IfJ is integer, 1≤j≤N, then the load actually cut off is
5. a kind of network system protection fast cut back multi-point control time method of testing according to claim 1, its
It is characterised by：Association's control central station, control centre station and control sub-station are using two-shipper mutually for control system.
6. a kind of network system protection fast cut back multi-point control time method of testing according to claim 1, its
It is characterised by：Reception that record issues cutting load order moment t1 by association's control central station of electric B codes time service, control centre stands is cut negative
Lotus order moment t2, control sub-station receive cutting load order moment t3, net load interaction terminal receives cutting load moment t4, during utilization
Between synchronized instruments measure interruptible load user branch switch tripping moment t5, using fault oscillograph measure user side load electricity
Zero moment of pouring off t6.
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| CN109639466A (en) * | 2018-11-28 | 2019-04-16 | 国网江苏省电力有限公司南京供电分公司 | One kind being based on the electric power industrial control system network security detection system of " source net lotus " |
| CN109713701A (en) * | 2019-02-01 | 2019-05-03 | 国网江苏省电力有限公司 | Battery energy storage net load interaction method, terminal, system and the medium of superposing control |
| CN110299764A (en) * | 2019-07-03 | 2019-10-01 | 广东石油化工学院 | A kind of load control system and implementation method based on net lotus close friend's interactive |
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| CN112769123A (en) * | 2019-11-01 | 2021-05-07 | 南京南瑞继保电气有限公司 | Actual measurement method and device for source-network-load accurate control system |
| CN110829419A (en) * | 2019-11-15 | 2020-02-21 | 国网湖南省电力有限公司 | Substation selection method of accurate load shedding system based on routing |
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