CN106774076A - A kind of power system operation secure border acquisition methods and its security control - Google Patents
A kind of power system operation secure border acquisition methods and its security control Download PDFInfo
- Publication number
- CN106774076A CN106774076A CN201611237093.5A CN201611237093A CN106774076A CN 106774076 A CN106774076 A CN 106774076A CN 201611237093 A CN201611237093 A CN 201611237093A CN 106774076 A CN106774076 A CN 106774076A
- Authority
- CN
- China
- Prior art keywords
- threshold
- security
- power system
- state space
- system operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses one kind by defining power system operation state-space region and secure border accounting equation, the method for obtaining power system operation secure border is calculated；The traffic coverage (as shown in Figure 1) of dynamical system definition can be divided into running status stabilization (the initialization N-dimensional state space of threshold 1Normal operation N-dimensional state spaceSafe operation N-dimensional state space) and (the non-security operation N-dimensional state space of non-security threshold 2), actual power system operation rotating speed just correspond to above-mentioned running status space, and the state space of non-security threshold 2 is separated from traffic coverage using the secure border accounting equation (3.1) of invention；Meanwhile, active damping safety control system is devised, the boundary condition of this non-security threshold 2 is controlled, make power system operation TRAJECTORY CONTROL in safety zone.
Description
Technical field
The safety management of power engineering and control field.
Background technology
The dynamical system of generally operation can be acted on by various load, such as dynamical system of aircraft, generating set
Running speed be the security parameter for needing monitoring, occur that machine is damaged once the secure threshold that transfinites, or even safety feelings out of control
Condition, therefore, power system operation displacement and speed are important monitoring parameters；We have invented a kind of impassable secure border
Acquisition methods, and by design safety control system, realize the safety running control of dynamical system.
The content of the invention
Dynamical system is by state equationIt is determined that, its traffic coverage (as shown in Figure 1) can be divided into operation
In stable condition (the initialization N-dimensional state space of threshold -1Normal operation N-dimensional state spaceSafety
Operation N-dimensional state space) and non-security threshold -2 (non-security operation N-dimensional state space), actual power
System operation rotating speed just correspond to above-mentioned running status space, and the non-security state space of threshold -2 is isolated from traffic coverage
Come, and method of controlling security 4 determined by Fig. 3, the borderline situation of this non-security threshold -2 is controlled, calculated by secure border
Equation (3.1) calculates secure border, as the set-point (4.1) that dynamical system is controlled, by PID (4.2) and active damping control
Device (4.3) active control processed, makes power system operation track (4.4) control in safety zone.It is a kind of non-security threshold -2
State space separate method -3, it can not be exceeded by threshold calculations equation -3.1, secure threshold coefficient -3.2 of rotating speed, construction
Boundary line -3.3 more, using active damping vibration control method (as shown in Figure 3), control the safety of power system operation rotating speed
Threshold value, makes the track -3.4 of power system operation rotating speed in the non-hatched area shown in Fig. 1, is so achieved that dynamical system
Safe operation.
Advantages of the present invention is as follows：
The secure threshold of the complex power system speed of service is difficult to be obtained by field test, and this causes that the operation of system is supervised
There is unsafe factor in control.If obtained by the method for l-G simulation test, the scene for often emulating differs greatly with actually, together
When, this operating mode for emulating during all life-spans for needing single machine will be it is considered that this be a job wasted time and energy, hardly possible
To realize；And obtained with experiment of transfiniting at the scene, its cost and cost are too high.Minimum cost is can use with the method for the present invention,
Obtain reliable and secure threshold value monitoring data.
Brief description of the drawings
Fig. 1 is safety zone and dangerous area schematic
Fig. 2 is impassable boundary line computational methods
Fig. 3 dynamical systems safety control system composition figure
Fig. 4 calculates schematic diagram for the running speed secure threshold of tower frame for wind generating set dynamical system
Fig. 5 is the tower frame for wind generating set dynamics frequency response output figure under the disturbance of turbulent wind 12m/s
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Assuming that the operation equation of tower frame for wind generating set dynamical system is a second-order system, the secure threshold area that we calculate
Between geometric figures are surrounded as shown in Figure 4 region be normal operation safety zone.The value corresponding to elliptical ring track in Fig. 3
The secure threshold corresponding to pylon dynamical system.Design k (e)=a, respectively 0.02,0.04,0.07,0.09, obtain different
Elliptical ring track, is also the safe edge boundary line of the determination calculating of equation 3.1, and the person of being commonly designed selectes setting for different pylon dynamical systems
Evaluation determines k (e), has then actually determined that the safe edge boundary line of pylon dynamical system.
Using the dynamical system method of controlling security of the secure border threshold value shown in Fig. 3, tower frame for wind generating set displacement is realized
Control response, as shown in Figure 5.Speed overshoot is appeared near pylon intrinsic frequency, by the safety control system shown in Fig. 3
Effect, the contrast of grey and black response curve, control realization effective control of tower velocity of displacement (black curve).
Claims (5)
1. a kind of power system operation secure border acquisition methods and its security control, it is characterised in that：Dynamical system definition
Traffic coverage is divided into running status stabilization threshold -1 (initialization N-dimensional state space -1.1, normal operation N-dimensional state space -1.2
Safe operation N-dimensional state space -1.3) and non-security threshold -2 (non-security operation N-dimensional state space), actual power system operation
Rotating speed just correspond to above-mentioned running status space, using the secure border accounting equation (3.1) of invention by the non-security shape of threshold -2
State space is separated from traffic coverage；Meanwhile, active damping safety control system is devised, control this non-security threshold -2
Boundary condition, makes power system operation TRAJECTORY CONTROL in safety zone.
2. according to a kind of power system operation secure border acquisition methods described in claim 1 and its security control, its feature
Be, described running status stabilization threshold -1 and non-security threshold -2, rotating speed secure threshold it determined by threshold calculations equation -3.1,
And the threshold point line for calculating constitutes impassable secure border.
3. according to a kind of power system operation secure border acquisition methods described in claim 1 and its security control, its feature
It is, method -3 that the state space of described non-security threshold -2 is separate, it is by threshold calculations equation -3.1, the safety threshold of rotating speed
Value coefficient -3.2, construct impassable boundary line -3.3, realize running status stabilization threshold -1 and the non-security state space of threshold -2
Separation.
Equation group 3.1, is made up of reachable set, unreachable collection and threshold calculations equation, and by solving, k (e) is threshold coefficient to wherein P
With Q matrix correlations, numerical value equation solution is by the software completion in case study on implementation.
4. according to a kind of power system operation secure border acquisition methods described in claim 1 and its security control, its feature
Be that described power system operation speed can not exceed the secure threshold computational methods of Yu, be call first threshold calculations equation-
3.1, the state space parameter of initial safety zone is brought into, by software computational methods rooting, as shown in Fig. 2 obtaining the shape
State space tracing point, the tracing point in multiple running status spaces is connected, that is, obtain impassable safe edge boundary line；Coupling system
Design condition, adjust k (e) threshold coefficient, then carry out running orbit secure border line computation, value determined by this edge boundary line
It is both secure threshold.
5. according to a kind of power system operation secure border acquisition methods described in claim 1 and its security control, its feature
It is：Dynamical system safety control system 4 is constituted as shown in figure 3, being obtained the safety threshold of dynamical system safety by the above method
Value, as given the 4.1 of dynamical system security control, acquisition deviation is compared by dynamical system control operation output y, is delivered to
PID4.2 and Active surge damper 4.3, adjust the running orbit of dynamical system 4.4, operate in dynamical system track safe
Within region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237093.5A CN106774076A (en) | 2016-12-28 | 2016-12-28 | A kind of power system operation secure border acquisition methods and its security control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237093.5A CN106774076A (en) | 2016-12-28 | 2016-12-28 | A kind of power system operation secure border acquisition methods and its security control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106774076A true CN106774076A (en) | 2017-05-31 |
Family
ID=58924868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611237093.5A Pending CN106774076A (en) | 2016-12-28 | 2016-12-28 | A kind of power system operation secure border acquisition methods and its security control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106774076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989742A (en) * | 2017-11-09 | 2018-05-04 | 国网新源控股有限公司 | Pump-storage generator operating parameter safe threshold adjusting system and method |
| CN107992993A (en) * | 2017-11-09 | 2018-05-04 | 国网新源控股有限公司 | Pump-storage generator safety monitoring system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08232670A (en) * | 1995-01-25 | 1996-09-10 | Robert Bosch Gmbh | Supercharging control system in internal combustion engine |
| CN101940498A (en) * | 2010-09-10 | 2011-01-12 | 中山大学 | Model for evaluating tumor ablation safe boundary by virtual navigation |
| CN104098032A (en) * | 2014-07-23 | 2014-10-15 | 徐州重型机械有限公司 | Control system and control method of working area boundary limitation of crane |
| CN104314693A (en) * | 2014-09-29 | 2015-01-28 | 北京航空航天大学 | Compensation-based aero-engine multi-loop switching control method |
-
2016
- 2016-12-28 CN CN201611237093.5A patent/CN106774076A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08232670A (en) * | 1995-01-25 | 1996-09-10 | Robert Bosch Gmbh | Supercharging control system in internal combustion engine |
| CN101940498A (en) * | 2010-09-10 | 2011-01-12 | 中山大学 | Model for evaluating tumor ablation safe boundary by virtual navigation |
| CN104098032A (en) * | 2014-07-23 | 2014-10-15 | 徐州重型机械有限公司 | Control system and control method of working area boundary limitation of crane |
| CN104314693A (en) * | 2014-09-29 | 2015-01-28 | 北京航空航天大学 | Compensation-based aero-engine multi-loop switching control method |
Non-Patent Citations (1)
| Title |
|---|
| 苏庆宇，等: "基于切换控制策略的航空发动机安全边界保护研究", 《制造业自动化》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989742A (en) * | 2017-11-09 | 2018-05-04 | 国网新源控股有限公司 | Pump-storage generator operating parameter safe threshold adjusting system and method |
| CN107992993A (en) * | 2017-11-09 | 2018-05-04 | 国网新源控股有限公司 | Pump-storage generator safety monitoring system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Juang et al. | Automatic landing control system design using adaptive neural network and its hardware realization | |
| JP5020950B2 (en) | Method and apparatus for reducing the load on an aircraft wing during rotation | |
| WO2019165752A1 (en) | Method and apparatus for dynamically determining yaw control precision | |
| CN106774076A (en) | A kind of power system operation secure border acquisition methods and its security control | |
| WO2015079221A2 (en) | Determination of turbulence in a fluid and control of array of energy producing devices | |
| Miah et al. | Non-autonomous coverage control with diffusive evolving density | |
| CN102736517A (en) | Direct adaptive reconstruction control method for three-degree-of-freedom helicopter | |
| Sørensen et al. | Performance comparison of controllers with fault-dependent control allocation for UAVs | |
| Zhang et al. | Model predictive control based dynamic geofence system for unmanned aerial vehicles | |
| Penarrocha et al. | Synthesis of nonlinear controller for wind turbines stability when providing grid support | |
| Chamon et al. | Resilient control: Compromising to adapt | |
| El Maati et al. | Optimal fault tolerant control of large-scale wind turbines in the case of the pitch actuator partial faults | |
| McDonough et al. | Controller state and reference governors for discrete-time linear systems with pointwise-in-time state and control constraints | |
| GB2525573A (en) | Control of array of energy producing devices | |
| CN106406080B (en) | A kind of long-range optimization system of AGC function and method of thermal power generation unit | |
| CN205862202U (en) | Transformator PLC long distance control system | |
| Biertümpfel et al. | Finite horizon touchdown analysis of autolanded aircraft under crosswind | |
| CN105624374B (en) | A kind of air-cushion type quenching system and automatic control system | |
| US20190109553A1 (en) | Acceleration estimator for speed rate control | |
| CN104165352B (en) | A kind of nuclear power plant evaporator Water-Level Supervising System and method for supervising thereof | |
| Kimmel et al. | Invariance control with time-varying constraints | |
| CN104989465B (en) | Automatic speed changing/increasing rate control method for preventing rotation speed overshoot of turbine | |
| CN104578079B (en) | Power grid section power control method for automatic power generation control | |
| Kesavan et al. | Controller tuning for nonlinear hopper process tank-a real time analysis | |
| Liu et al. | Adaptive control software: can we guarantee safety? |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |