CN101202451A - System for controlling wide area damp of electrical power system and method thereof - Google Patents
System for controlling wide area damp of electrical power system and method thereof Download PDFInfo
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Abstract
The invention relates to a control system of a power system wide-area damping, comprising a wide-area phasor measurement system, a wide-area damping control master station and an execution sub station which are connected by communication passages; the wide-area phasor measurement system is used for collecting the synchronous phasor data signals of an AC substation or a DC converter station; the wide-area damping controls the master station to receive and process the signals of the wide-area phasor measurement system, judges the oscillating information thereof and the commissioning status of the control system thereof, and emits commands to control the execution sub station; the execution sub station is connected with the control equipment of the power system and commands to transmit corresponding power system control equipments to control the power oscillating phenomena. Furthermore, the invention also provides a control method for the control system of the power system wide-area damping. The invention can effectively restrain the power oscillating phenomenon of the power system in a large range and improve the stability of the power system.
Description
Technical field
The present invention relates to field of power system control, in particular, relate to a kind of control system and method thereof of wide area damp of electrical power system.
Background technology
Traditional electric power system control pattern substantially all is a local mode, that is: certain controller that is positioned at the electrical network part is only gathered local information as feedback signal, and calculation control instruction and execution constitute continuous closed-loop control system in view of the above.This local control model is representative with power system stabilizer, PSS PSS, SVC, TCSC etc.
This local mode be controlled at electric power system past up to a hundred in the period of brought into play very important effect, but along with the expansion of scale of power, particularly interconnected between the big electrical network, this control model more and more exposes limitation, be mainly reflected in: the dynamic characteristic of big electrical network is complicated more, the very big power network fluctuation incident of scope particularly appears involving easily, as interregional power oscillation etc., the control of local mode can't effectively be controlled this dynamic phenomenon on a large scale owing to only gather local signal.
On the other hand, in recent years because the development of synchronized phasor measurement technology, the construction electric power system at home and abroad of wide area phasor measurement system all begins to take shape, application for this system, all also stay in accident post analysis and in-service monitoring aspect at present both at home and abroad, do not give full play to wide area measurement system and making up wide area control, the elevator system potentiality aspect the dynamic property on a large scale.
Summary of the invention
The present invention proposes and a kind ofly can effectively suppress the large-scale power of electric power system upheaval phenomenon, improve the control system of the wide area damp of electrical power system of stability of power system, in addition, the present invention also provides a kind of control method of wide area damp of electrical power system.
To achieve these goals, the present invention adopts following technical scheme:
A kind of control system of wide area damp of electrical power system comprises wide area phasor measurement system, the wide area damp controlling center that connects via communication port and carries out the substation; Wide area phasor measurement system is used to gather the synchronized phasor data-signal of AC Substation or DC converter station; The wide area damp controlling center receives, handles the signal from wide area phasor measurement system, judge wherein oscillation information and the state that puts into operation of control system, and the substation is carried out in the control of giving an order; Carry out the substation and be connected with the control appliance of electric power system, and the relevant electric power system control equipment of order transmission, the power oscillation phenomenon is controlled.
The state of putting into operation of control system comprises following content: the operation of power networks state, the oneself state of electric power system control equipment, the state of the communication port between wide area measurement system, wide area damp controlling center and the execution substation three, wide area measurement system, controlling center and control sub-station three's hardware state.
The wide area damp controlling center comprises the computer that is equipped with real time operating system, and this computer adopts the data of real-time data base storage from wide area phasor measurement system.
Also comprise the inner digitial controller module that realizes at the wide area damp controlling center., this digitial controller module is by constituting every straight, filtering, proportional gain and phase shift and amplitude limit link.
Between wide area phasor measurement system and the wide area damp controlling center, and all realize the signals transmission between wide area damp controlling center and the execution substation by single or multiple optical-fibre channels.
The control appliance of electric power system comprises any one or more combination in power system stabilizer, PSS, electric power system high voltage direct current transmission controller system, STATCOM and the Static Var Compensator.
In addition, the present invention also provides the control method of the control system of a kind of electrification system wide area damp, it may further comprise the steps: a, wide area phasor measurement system receive the synchronized phasor data from AC Substation or DC converter station, and send the wide area damp controlling center to; B, wide area damp controlling center receive, handle the signal from wide area phasor measurement system; C, signal is carried out analytical calculation, judge the condition that puts into operation that whether possesses oscillation information and control system in the current demand signal, when possessing oscillation information, and the condition of putting into operation is carried out next step d when satisfying; When not possessing oscillation information or the condition that puts into operation when not satisfying, return the rapid b of previous step; D, wide area damp controlling center transmit control command to carrying out the substation, and the execution substation receives and handle the control command from the wide area damp controlling center; Whether e, to carry out the state and self hardware state that detect communication port in the substation unusual, and when the state of communication port or self hardware state were unusual, control system was returned execution in step b; When the state of communication port and self hardware state just often, carry out the substation control command be forwarded to local control appliance, control local control appliance action, finish whole closed-loop control process.
In step c, the condition of putting into operation comprises following content: the operation of power networks state, the state of electric power system control equipment, whether wide area measurement system, wide area damp controlling center and the communication port of carrying out between the three of substation be normal, and whether wide area measurement system, wide area damp controlling center and execution substation three's hardware state is normal; When possessing oscillation information, and the operation of power networks state is normal, the state that state is normal, communication port normally reaches hardware control system of electric power system control equipment just often, carry out next step d; During the abnormal state of or hardware control system unusual, return the rapid b of previous step when the abnormal state that does not possess oscillation information, operation of power networks abnormal state, electric power system control equipment, communication port.
In steps d, the wide area damp controlling center will calculate current control command continuously, and this control command is transferred under the driving of the outside phasor data of input carries out the substation.
The wide area measurement system that is collected in step a is gathered real-time grid phasor data, and carries out the control command that the substation is transmitted to control appliance in step e, all with the GPS markers.
The control system of wide area damp of electrical power system of the present invention and control method thereof, it utilizes wide area phasor measurement system, wide area damp controlling center and carries out the closed-loop control system that the substation constituted, each interregional electrical network phasor data will be gathered on a large scale, the power oscillation phenomenon that electrical network takes place is in time found, utilize the built-in digital control module of wide area damp controlling center that oscillation information is calculated real-time command, and real-time command is sent to a distant place carries out the substation, the electric power system control equipment that transmission is relevant gives timely inhibition to the power oscillation phenomenon.So, the control system of wide area damp of electrical power system of the present invention and control method thereof, can obviously promote the stability of electric power system on a large scale, also give full play to simultaneously wide area phasor measurement system and making up wide area control, the elevator system potentiality aspect the dynamic property on a large scale.
Description of drawings
Fig. 1 is that system of the present invention forms theory diagram;
Fig. 2 is a system control method flow chart of the present invention.
Embodiment
As shown in Figure 1, be the theory of constitution block diagram of the control system of a kind of wide area damp of electrical power system of the present invention, comprise wide area phasor measurement system, the wide area damp controlling center that connects via communication port and carry out the substation.
Wide area phasor measurement system is positioned at a plurality of crucial AC Substation or the DC converter station of electrical network, and gathers the synchronized phasor data, obtains the multidate information of electrical network, and gives the wide area damp controlling center by single or multiple optical-fibre channels with the message transmission that collects.
The wide area damp controlling center is used to receive, handle the signal from wide area phasor measurement system, and the state of putting into operation of oscillation information in the data-signal that receives and current control system is judged, and the substation is carried out in the control of giving an order.
Except the basic function that realizes the control oscillatory occurences, also need to consider the state that puts into operation in the system in the control system, with the reliability service of assurance control system self and the safety of electrical network.
The above-mentioned state that puts into operation specifically comprises: the operation of power networks state, the oneself state of electric power system control equipment, communication port state between wide area measurement system, wide area damp controlling center and the execution substation three, wide area measurement system, controlling center and control sub-station three's hardware state.
In the above-mentioned state that puts into operation, when electrical network is in unusual condition, carries out the wide area damp control system and may worsen this kind unusually; Found unusually and work as the wide area damp controlling center or carry out substation self hardware detection, may threaten the reasonable instruction of control system; When communication port was unusual, control system is move instruction and data reliably;
Under above abnormal conditions, for the reliability service that guarantees control system self and the safety of electrical network, control system will be differentiated automatically for not possessing the condition of putting into operation, this moment is to being in the control system of the state that puts into operation, to send instruction and subdue controlled quentity controlled variable, and, will send instruction locking control system to the control system of the state of not putting into operation.
Above-mentioned wide area damp controlling center also comprises the computer that is equipped with real time operating system, and it utilizes the data-signal of real-time data base storage from wide area phasor measurement system.
In addition, digital control module has also been realized in wide area damp controlling center inside.This digital control module is by constituting every straight, filtering, proportional gain and phase shift and amplitude limit link, and it has promoted the core logic of control system control electrical network oscillation damping.This digital control module shows as the software systems that operate in computer in the wide area damp controlling center.
Carry out the substation and adopt the similar architecture of electric power system high voltage protective, be connected with the wide area damp controlling center in a distant place by high speed fibre.Carry out the factory station that the substation is positioned at needs to implement control, and be connected with the control appliance of electric power system, and the relevant electric power system control equipment of order transmission, the power oscillation phenomenon is controlled.
Described control appliance comprises any one or more combination in power system stabilizer, PSS (PSS), electric power system high voltage direct current control system (HVDC), STATCOM (STATCOM) and the Static Var Compensator (SVC).
As shown in Figure 2, be the control method flow chart of the control system of wide area damp of electrical power system of the present invention, it may further comprise the steps:
A, wide area phasor measurement system receive synchronized phasor data and GPS markers from AC Substation or DC converter station, and send the wide area damp controlling center to.
B, wide area damp controlling center receive, handle the signal from wide area phasor measurement system, and the wide area damp controlling center also adopts the signal of real-time data base storage from wide area phasor measurement system.
C, signal is carried out analytical calculation, judge the cond that puts into operation that whether possesses oscillation information and control system in the current demand signal, when possessing oscillation information, and the operation of power networks state is normal, the state that state is normal, communication port normally reaches hardware control system of electric power system control equipment just often, carry out next step d; During the abnormal state of or hardware control system unusual, return the rapid b of previous step when the abnormal state that does not possess oscillation information, operation of power networks abnormal state, electric power system control equipment, communication port.
D, wide area damp controlling center will calculate current control command continuously, and this control command is transferred under the driving of the outside phasor data of input carries out the substation, carries out substation reception and the processing control command from the wide area damp controlling center.
Whether e, to carry out the state and self hardware state that detect communication port in the substation unusual, and when the state of communication port or self hardware state were unusual, control system was returned execution in step b; When the state of communication port and self hardware state just often, carry out the substation control command and subsidiary GPS markers be forwarded to local control appliance, control local control appliance action, finish whole closed-loop control process.
In step a, reach whole time delays that the GPS markers of having can guarantee the synchronous and real-time assessment wide area damp control system loop of a plurality of different channel datas in step e.
Claims (10)
1. the control system of a wide area damp of electrical power system is characterized in that comprising wide area phasor measurement system, the wide area damp controlling center that connects via communication port and carries out the substation;
Wide area phasor measurement system is used to gather the synchronized phasor data-signal of AC Substation or DC converter station;
The wide area damp controlling center receives, handles the signal from wide area phasor measurement system, the oscillation information in the judgement signal and the state that puts into operation of control system thereof, and the substation is carried out in the control of giving an order;
Carry out the substation and be connected with the control appliance of electric power system, and the relevant electric power system control equipment of transmission, the power oscillation phenomenon is controlled.
2. the control system of wide area damp of electrical power system according to claim 1, it is characterized in that: the state of putting into operation of control system comprises following content: the operation of power networks state, the oneself state of electric power system control equipment, whether wide area measurement system, wide area damp controlling center and the communication port of carrying out between the three of substation be normal, and whether wide area measurement system, controlling center and control sub-station three's hardware state is normal.
3. the control system of wide area damp of electrical power system according to claim 1, it is characterized in that: the wide area damp controlling center comprises the computer that is equipped with real time operating system, and this computer adopts the data of real-time data base storage from wide area phasor measurement system.
4. the control system of wide area damp of electrical power system according to claim 3 is characterized in that: at the inner digital control module of realizing of wide area damp controlling center, this digital control module is by constituting every straight, filtering, proportional gain, phase shift and amplitude limit link.
5. the control system of wide area damp of electrical power system according to claim 1, it is characterized in that: between wide area phasor measurement system and the wide area damp controlling center, and all realize the signals transmission between wide area damp controlling center and the execution substation by single or multiple optical-fibre channels.
6. the control system of wide area damp of electrical power system according to claim 1, it is characterized in that: the control appliance of electric power system comprises any one or more combination in power system stabilizer, PSS, electric power system high-voltage dc transmission electric control system, STATCOM and the Static Var Compensator.
7. control method of using the control system of the described wide area damp of electrical power system of claim 1, it may further comprise the steps:
A, wide area phasor measurement system receive the synchronized phasor data from AC Substation or DC converter station, and send the wide area damp controlling center to;
B, wide area damp controlling center receive, handle the signal from wide area phasor measurement system;
C, signal is carried out analytical calculation, judge the condition that puts into operation that whether possesses oscillation information and control system in the current demand signal, when possessing oscillation information, and the condition of putting into operation is carried out next step d when satisfying; When not possessing oscillation information or the condition that puts into operation when not satisfying, return the rapid b of previous step;
D, wide area damp controlling center transmit control command to carrying out the substation, and the execution substation receives and handle the control command from the wide area damp controlling center;
Whether e, to carry out the state and self hardware state that detect communication port in the substation unusual, and when the state of communication port or self hardware state were unusual, control system was returned execution in step b; When the state of communication port and self hardware state just often, carry out the substation control command be forwarded to local control appliance, control local control appliance action, finish whole closed-loop control process.
8. the control method of wide area damp of electrical power system according to claim 7, it is characterized in that: in step c, the condition of putting into operation comprises following content: the operation of power networks state, the state of electric power system control equipment, whether wide area measurement system, wide area damp controlling center and the communication port of carrying out between the three of substation be normal, and whether wide area measurement system, wide area damp controlling center and execution substation three's hardware state is normal; When possessing oscillation information, and the operation of power networks state is normal, the state that state is normal, communication port normally reaches hardware control system of electric power system control equipment just often, carry out next step d; During the abnormal state of or hardware control system unusual, return the rapid b of previous step when the abnormal state that does not possess oscillation information, operation of power networks abnormal state, electric power system control equipment, communication port.
9. the control method of wide area damp of electrical power system according to claim 7, it is characterized in that: in steps d, the wide area damp controlling center will calculate current control command continuously, and this control command is transferred under the driving of the outside phasor data of input carries out the substation.
10. the control method of wide area damp of electrical power system according to claim 7 is characterized in that: the wide area measurement phasor data that in step a, collected, and in step e, carry out the control command that the substation is transmitted to control appliance, all with the GPS markers.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011015247A1 (en) * | 2009-08-06 | 2011-02-10 | Abb Research Ltd | Power or voltage oscillation damping in a power transmission system |
| CN102185326A (en) * | 2011-05-17 | 2011-09-14 | 华北电力大学 | Method for designing wide area damping control system with robustness |
| CN102420559A (en) * | 2011-11-01 | 2012-04-18 | 南方电网科学研究院有限责任公司 | Generator wide-area damping control method based on system identification and genetic algorithm |
| CN102496944A (en) * | 2011-12-07 | 2012-06-13 | 南方电网科学研究院有限责任公司 | Wide-area information-based distributed damping control system and method for power system |
| CN102593850A (en) * | 2012-02-24 | 2012-07-18 | 清华大学 | Power system wide-area damping on-line control method considering multi-interval communication time delay |
| CN102946109A (en) * | 2012-10-24 | 2013-02-27 | 华中科技大学 | Wide area damping control system of electric system based on event trigger |
| CN103248063A (en) * | 2013-05-15 | 2013-08-14 | 国家电网公司 | Multi-direct-current coordinative wide area damping control method based on PMU (power management unit) |
| CN103311939A (en) * | 2013-06-14 | 2013-09-18 | 华北电力大学（保定） | WAMS (wide area measurement system) based low-frequency oscillation coordinated damping control method for electric power system |
| CN103595062A (en) * | 2013-07-25 | 2014-02-19 | 国家电网公司 | Generator wide area damping control method based on model-free adaptive control algorithm |
| EP2302754A4 (en) * | 2008-09-27 | 2016-11-30 | State Grid Corp China Sgcc | A low frequency oscillation integrated analysis method and its system |
| CN106405267A (en) * | 2016-07-27 | 2017-02-15 | 河北省电力建设调整试验所 | Fault detection method in wide-area backup protection system |
| CN110635730A (en) * | 2019-09-30 | 2019-12-31 | 华中科技大学 | Reactive power controller of flexible excitation system, reactive power control method and system |
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| EP2302754A4 (en) * | 2008-09-27 | 2016-11-30 | State Grid Corp China Sgcc | A low frequency oscillation integrated analysis method and its system |
| WO2011015247A1 (en) * | 2009-08-06 | 2011-02-10 | Abb Research Ltd | Power or voltage oscillation damping in a power transmission system |
| US8710700B2 (en) | 2009-08-06 | 2014-04-29 | Abb Research Ltd. | Power or voltage oscillation damping in a power transmission system |
| CN102185326B (en) * | 2011-05-17 | 2014-01-08 | 华北电力大学 | Method for designing wide area damping control system with robustness |
| CN102185326A (en) * | 2011-05-17 | 2011-09-14 | 华北电力大学 | Method for designing wide area damping control system with robustness |
| CN102420559A (en) * | 2011-11-01 | 2012-04-18 | 南方电网科学研究院有限责任公司 | Generator wide-area damping control method based on system identification and genetic algorithm |
| CN102496944A (en) * | 2011-12-07 | 2012-06-13 | 南方电网科学研究院有限责任公司 | Wide-area information-based distributed damping control system and method for power system |
| CN102593850A (en) * | 2012-02-24 | 2012-07-18 | 清华大学 | Power system wide-area damping on-line control method considering multi-interval communication time delay |
| CN102593850B (en) * | 2012-02-24 | 2014-05-28 | 清华大学 | Power system wide-area damping on-line control method considering multi-interval communication time delay |
| CN102946109A (en) * | 2012-10-24 | 2013-02-27 | 华中科技大学 | Wide area damping control system of electric system based on event trigger |
| CN103248063A (en) * | 2013-05-15 | 2013-08-14 | 国家电网公司 | Multi-direct-current coordinative wide area damping control method based on PMU (power management unit) |
| CN103311939A (en) * | 2013-06-14 | 2013-09-18 | 华北电力大学（保定） | WAMS (wide area measurement system) based low-frequency oscillation coordinated damping control method for electric power system |
| CN103595062A (en) * | 2013-07-25 | 2014-02-19 | 国家电网公司 | Generator wide area damping control method based on model-free adaptive control algorithm |
| CN103595062B (en) * | 2013-07-25 | 2016-05-25 | 国家电网公司 | Generator wide area damp control method based on model-free adaption control algolithm |
| CN106405267A (en) * | 2016-07-27 | 2017-02-15 | 河北省电力建设调整试验所 | Fault detection method in wide-area backup protection system |
| CN106405267B (en) * | 2016-07-27 | 2018-10-19 | 河北省电力建设调整试验所 | A kind of fault detection method in wide area backup protection system |
| CN110635730A (en) * | 2019-09-30 | 2019-12-31 | 华中科技大学 | Reactive power controller of flexible excitation system, reactive power control method and system |
| CN113158482A (en) * | 2021-04-30 | 2021-07-23 | 清华大学 | Real-time simulation platform of electric power system |
| CN113158482B (en) * | 2021-04-30 | 2024-04-02 | 清华大学 | Real-time simulation platform for power system |
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Open date: 20080618 |