CN203930374U - Direct current islet operation stability closed-loop simulation checkout equipment - Google Patents
Direct current islet operation stability closed-loop simulation checkout equipment Download PDFInfo
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Abstract
A direct current islet operation stability closed-loop simulation checkout equipment, is provided with monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices, speed regulator topworks, extra-high voltage direct-current control protective unit, real-time simulation apparatus, interactive interfacing device and power amplifier; Monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices are gathered the control observation amount of described real-time simulation apparatus and control information are inputed to real-time simulation apparatus by interactive interfacing device and power amplifier, and extra-high voltage direct-current control protective unit carries out DC transmission system control operation.The utility model can be coordinated control characteristic to high-capacity direct current islanded system frequency stability, voltage stability, machine net and detect, shorten the cycle of site test, the risk of evading site test, improve the security and stability of Operation of Electric Systems, there is operation and control flexible, simulation result precision high.
Description
Technical field
The utility model relates to stability of power system technical field, particularly relates to a kind of direct current islet operation stability closed-loop simulation checkout equipment.
Background technology
Along with being constructed and put into operation of large capacity ultrahigh voltage DC transmission system, its huge transmission line capability has significantly improved the power delivery capabilities of electric system.Refer to ± 800kV of extra-high voltage magnitude standard, yet, when large capacity ultrahigh voltage straight-flow system and AC system parallel running, direct current component will bring considerable influence to the stability of AC network main grid structure, direct current locking will cause AC system circuit to get over limit operation, occur the problems such as system damping level is low, system transient modelling unstability.For reducing the impact of large capacity ultrahigh voltage direct current locking fault on electricity net safety stable aspect, high-capacity direct current transmission system need to adopt decoupled mode, i.e. direct current converting plant and sending end power supply self-organizing system.
Stability in order to ensure actual transmission system; need to for direct current islanded system, accurately study control characteristic, the DC control protection feature of genset, especially need to reflect in detail that genset is from loading to the speed regulating control characteristic of shutting down broad operating condition.Because direct current islanded system itself is an accurate mini system, compare with large system, direct current islanded system to the fault-tolerance of simulation parameter and model bias a little less than.And emulation checkout equipment of the prior art and detection method are not suitable for direct current islanded system.
Therefore, not enough for prior art, provide a kind of direct current islet operation stability closed-loop simulation checkout equipment very necessary to overcome prior art deficiency.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art part and a kind of direct current islet operation stability closed-loop simulation checkout equipment and detection method thereof is provided, can study to the control characteristic of high-capacity direct current islanded system the stability of Accurate Analysis islanded system.
Above-mentioned purpose of the present utility model realizes by following technological means.
A direct current islet operation stability closed-loop simulation checkout equipment, is provided with monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices, speed regulator topworks, extra-high voltage direct-current control protective unit, real-time simulation apparatus, interactive interfacing device and power amplifier;
The first output terminal of described real-time simulation apparatus is connected with the four-input terminal of described interactive interfacing device, the 3rd output terminal of described interactive interfacing device is connected with the first input end of described real-time simulation apparatus, the first output terminal of described interactive interfacing device is connected with the first input end of described power amplifier, the first output terminal of described power amplifier is connected with the first input end of described monitoring power station device, the second output terminal of described power amplifier is connected with the second input end of described excitation controlling device, the 3rd output terminal of described power amplifier is connected with the second input end of described speed regulator electrical adjustment devices, the first output terminal of described monitoring power station device is connected with the first input end of described speed regulator electrical adjustment devices, the second output terminal of described monitoring power station device is connected with the first input end of described excitation controlling device, the first output terminal of described speed regulator electrical adjustment devices is connected with the first input end of described speed regulator topworks, the first output terminal of described excitation controlling device is connected with the first input end of described interactive interfacing device, the first output terminal of described speed regulator topworks is connected with the second input end of described interactive interfacing device, the first output terminal of described extra-high voltage direct-current control protective unit is connected with the 3rd input end of described interactive interfacing device, the second output terminal of described interactive interfacing device is connected with the first input end of described extra-high voltage direct-current control protective unit,
Described monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices are gathered bus ABC three-phase voltage instantaneous value, stator ABC three-phase current instantaneous value, the breaker closing position control observed quantity of unit machine end of described real-time simulation apparatus and control information are inputed to described real-time simulation apparatus by interactive interfacing device and power amplifier, and described extra-high voltage direct-current control protective unit carries out DC transmission system control operation.
onstate monitoring power station device, excitation controlling device and speed regulator electrical adjustment devices and carry out system-level frequency, Voltage Stability Control; Described speed regulator electrical adjustment devices is combined the active power of genset is controlled and the frequency of genset is regulated with speed regulator topworks; Described monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices, speed regulator topworks integral body are controlled the genset of direct current islet operation system; Described extra-high voltage direct-current control protective unit is realized the control to direct current islet operation system.
Above-mentioned real-time simulation apparatus is RTDS emulator.
Above-mentioned real-time simulation apparatus carries out real-time simulation calculating to Large Hydroelectric Set, DC transmission system and corresponding transmission line of alternation current.
The GTDI board that above-mentioned interactive interfacing device is provided with the GTAO board of sending for DA signal, the GTAI board of sending into for AD signal, the GTDO board of sending for switching value and sends into for switching value.
The model of above-mentioned power amplifier is PA30B Digital Simulation power amplifier.
Direct current islet operation stability closed-loop simulation checkout equipment of the present utility model, is provided with monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices, speed regulator topworks, extra-high voltage direct-current control protective unit, real-time simulation apparatus, interactive interfacing device and power amplifier; Described monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices are gathered the control observation amount of described real-time simulation apparatus and control information are inputed to described real-time simulation apparatus by interactive interfacing device and power amplifier, and described extra-high voltage direct-current control protective unit carries out DC transmission system control operation.Can study to the control characteristic of high-capacity direct current islanded system the stability of Accurate Analysis islanded system.
Accompanying drawing explanation
Utilize accompanying drawing to be further described the utility model, but content in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of direct current islet operation of the utility model stability closed-loop simulation checkout equipment.
Fig. 2 is the structural representation of the utility model monitoring power station device.
Fig. 3 is the structural representation of the utility model generator static excitation control device.
Fig. 4 is the structural representation of the utility model generator speed regulating control.
Fig. 5 is the structural representation of the utility model dynamo governor topworks.
Fig. 6 is the structural representation of the utility model direct current isolated island device.
Embodiment
With the following Examples the utility model is further described.
embodiment 1.
A kind of direct current islet operation stability closed-loop simulation checkout equipment; as shown in Figure 1, be provided with monitoring power station device 100, excitation controlling device 200, speed regulator electrical adjustment devices 300, speed regulator topworks 400, extra-high voltage direct-current control protective unit 500, real-time simulation apparatus 600, interactive interfacing device 700 and power amplifier 800.
The first output terminal 611 of real-time simulation apparatus 600 is connected with the four-input terminal 724 of interactive interfacing device 700, the 3rd output terminal 713 of interactive interfacing device 700 is connected with the first input end 621 of described real-time simulation apparatus 600, the first output terminal 711 of described interactive interfacing device 700 is connected with the first input end 821 of described power amplifier 800, the first output terminal 811 of described power amplifier 800 is connected with the first input end 121 of described monitoring power station device 100, the second output terminal of described power amplifier 800 is connected with the second input end 222 of excitation controlling device described in 812 200, the 3rd output terminal 813 of described power amplifier 800 is connected with the second input end 322 of described speed regulator electrical adjustment devices 300, the first output terminal 111 of described monitoring power station device 100 is connected with the first input end 321 of described speed regulator electrical adjustment devices 300, the second output terminal 112 of described monitoring power station device is connected with the first input end 221 of described excitation controlling device 200, the first output terminal 311 of described speed regulator electrical adjustment devices 300 is connected with the first input end 421 of described speed regulator topworks 400, the first output terminal 211 of described excitation controlling device 200 is connected with the first input end 721 of described interactive interfacing device 700, the first output terminal 411 of described speed regulator topworks 400 is connected with the second input end 722 of described interactive interfacing device 700, the first output terminal 511 of described extra-high voltage direct-current control protective unit 500 is connected with the 3rd input end 723 of described interactive interfacing device 700, the second output terminal 712 of described interactive interfacing device 700 is connected with the first input end 521 of described extra-high voltage direct-current control protective unit 500.
Monitoring power station device 100, excitation controlling device 200, speed regulator electrical adjustment devices 300 are gathered the control observation amount of described real-time simulation apparatus 600 and control information are inputed to described real-time simulation apparatus 600 by interactive interfacing device 700 and power amplifier 800, and described extra-high voltage direct-current control protective unit 500 carries out the control operation of direct current transportation device.
Concrete, monitoring power station device 100, excitation controlling device 200 and speed regulator electrical adjustment devices 300 are carried out system-level frequency, Voltage Stability Control; Speed regulator electrical adjustment devices 300Yu speed regulator topworks 400 combines the active power of genset is controlled and the frequency of genset is regulated; Monitoring power station device 100, excitation controlling device 200, speed regulator electrical adjustment devices 300, speed regulator topworks 400 integral body are controlled the genset of direct current islet operation device; The control that extra-high voltage direct-current control protective unit 500 is realized direct current islet operation device.
Meritorious, the idle adjusting control at the excitation that this direct current islet operation stability closed-loop simulation checkout equipment has comprised genset, speed regulating control and full station, the control protection of direct current transportation device; the interaction between direct current isolated island device unit and flow directing device, the interaction between unit can be accurately reflected, the process of unit steering logic, DC control protection logical action can be accurately reflected.Therefore can study to the control characteristic of high-capacity direct current isolated island device the stability of Accurate Analysis isolated island device.
embodiment 2.
A direct current islet operation stability closed-loop simulation checkout equipment, other structure is identical with embodiment 1, and difference is also have following technical characterictic:
Real-time simulation apparatus 600 is RTDS(Real Time Digital Simulation) emulator.RTDS electric device real-time simulation device, is developed by Canadian RTDS technology company.Full digital real-time simulator is comprised of hardware device Rack such as computing chip RSCAD, computation processor etc., comprises supporting workstation or microcomputer, can continuously and carry out in real time the electromagnetic transient simulation research of electric device.
Real-time simulation calculating is carried out in 600 pairs of Large Hydroelectric Set of real-time simulation apparatus, direct current transportation device and corresponding transmission line of alternation current.Specifically direct current isolated island installation's power source is partly comprised to Large Hydroelectric Set six rank circuit model electromagnetic transient simulations calculating, direct current transportation device 12 flutter valve models and the calculating of DC line electromagnetic transient simulation, transmission line of alternation current row wave pattern electromagnetic transient simulation calculate.
Interactive interfacing device 700 is the communication interactive device that real-time simulation apparatus 600 is connected with power grid control protective device, the GTDI board that is provided with the GTAO board of sending for DA signal, the GTAI board of sending into for AD signal, the GTDO board of sending for switching value and sends into for switching value.The monitoring power station device 100 of Large Hydroelectric Set, excitation controlling device 200 and speed regulator electrical adjustment devices 300 collection generator unit stator electric currents, set end voltage, machine end circuit-breaker switching on-off position signals are controlled to calculate and are obtained control signal, and control device returns to real-time simulation apparatus 600 by corresponding control signal.
The model of power amplifier 800 is PA30B Digital Simulation power amplifier.
Monitoring power station device 100 is become by two sides control flow group, comprises IO module and CPU, realizes AGC, AVC function, according to certain algorithm, completes the control of full station genset active power, frequency adjustment, Reactive Power Control, voltage-regulation.
Wherein, AGC is according to controlling with the proportional principle of capacity, i.e. formula (1).
In formula,
for participating in the generator quantity of AGC frequency modulation control;
for participating in the of AGC frequency modulation
platform unit is maximum output under current head;
for all units of participating in AGC frequency modulation are in the current head sum of exerting oneself;
for AGC is assigned to
the active power instruction of platform unit.
It is idle that AVC controls unit according to automatism voltage control principle, i.e. following formula (2) and (3).
According to the total idle mode in the given full station of scheduling, control Reactive load allocating:
；
In formula,
for the idle setting value in full station;
by not participating in AVC, control unit and sent out sum idle;
According to the given bus voltage value of scheduling, to full station is idle, distribute:
；
In formula,
for bus virtual voltage and given voltage deviation;
for the pressure regulation coefficient of busbar voltage in range of normal value.
Large Hydroelectric Set exciter control system 200 becomes by simultaneously shielding group, comprises adjustment of field excitation and PSS, and excitation controller comprises Voltage loop AVR and exciting current ring ECR function.
Voltage loop AVR: control aim parameter is generator terminal voltage, and during operation, set-point can be adjusted in allowed band;
Exciting current ring ECR: control aim parameter is exciting current, and set-point during operation can be 10%
to 110%
in scope, adjust (
for generator rated exciting current,
for generator open-circuit excitation electric current).
The electric adjusting control law of speed regulator electrical adjustment devices 300 true reflection genset speed regulator, by simultaneously shielding group, become, comprise that gathering genset set end voltage, stator current is converted to the generator speed signal of primary frequency modulation control, control mode switch according to certain algorithm, be scaled unit and determine the active power signal that power is controlled, as the aperture control of the electric adjusting of speed regulator, the input signal of power control mode.The instruction of the final output pitch of speed regulator electrical adjustment devices 300 is as the aperture signal of speed regulator topworks.
The links such as the inner loop of the topworks of speed regulator topworks 400 simulation units, hydraulic means, the hydraulic turbine, priming device; the dead band of topworks, saturated, speed restriction characteristic and sequence closing rule can be accurately reflected, Calculations of Hydraulic Transient, the mechanical transition process characteristic Simulation of broad range of operation from be fully loaded with to shutting down can be realized.The former dynamic torque of speed regulator topworks 400 final output generator groups, actuating unit rotor.
Normal on off control, emergency outage control, power adjustments that extra-high voltage direct-current control protective unit 500 can be realized direct current transportation device, can realize the protection simulation of direct current transportation device valve cell, DC line, ground electrode circuit.
The structural representation of monitoring power station device as shown in Figure 2, the structural representation of generator static excitation control device as shown in Figure 3, the structural representation of generator speed regulating control as shown in Figure 4, as shown in Figure 5, the structural representation of direct current isolated island device as shown in Figure 6 for the structural representation of dynamo governor topworks.
Meritorious, the idle adjusting control at the excitation that the closed-loop control simulation test platform of direct current islet operation stability analysis has comprised genset, speed regulating control and full station, the control protection of direct current transportation device; the interaction between direct current isolated island device unit and flow directing device, the interaction between unit can be accurately reflected, the process of unit steering logic, DC control protection logical action can be accurately reflected.Can study to the control characteristic of high-capacity direct current isolated island device the stability of Accurate Analysis isolated island device.
embodiment 3.
Adopt the direct current islet operation stability closed-loop simulation checkout equipment described in as above embodiment 1 or 2 to detect; control device by real-time simulation apparatus 600 by interactive interfacing device 700, power amplifier 800 Large Hydroelectric Set reality connects, and real-time simulation apparatus 600 is connected with large capacity ultrahigh voltage DC control protective device 500 by interactive interfacing device 700.
Adopt 600 pairs of Large Hydroelectric Set of described real-time simulation apparatus, direct current transportation device and corresponding transmission line of alternation current to carry out real-time simulation calculating, control device gathers the working condition signal of real-time simulation apparatus 600 and carries out computing and obtains control information, and control device returns to corresponding control information to be delivered to real-time simulation apparatus 600.
The control operation that extra-high voltage direct-current control protective unit 500 is realized large capacity ultrahigh voltage direct current transportation device.
The control device of Large Hydroelectric Set reality comprises monitoring power station device 100, excitation controlling device 200, speed regulator electrical adjustment devices 300He speed regulator topworks 400.
Monitoring power station device 100 is realized the generating plant that comprises many Large Hydroelectric Set paired runnings is carried out to Automatic Generation Control and automatism voltage control, and the steering order of monitoring power station device 100 is issued to excitation controlling device 200 and speed regulator electrical adjustment devices 300 by fieldbus.
Excitation controlling device 200 is realized excitation control, the voltage-regulation to Large Hydroelectric Set, speed regulator electrical adjustment devices 300Yu speed regulator topworks 400 combines realization to Large Hydroelectric Set speed regulating control, speed regulator electrical adjustment devices 300 realizes set end voltage measurement, generating unit speed conversion, the electric adjusting control simulation of speed regulator, and export the instruction of pitch aperture, speed regulator topworks 400 realizes power station priming device, the hydraulic turbine, hydraulic means simulation, and the former dynamic torque of output generator group.
The utility model can be realized the detection research of high-capacity direct current isolated island device frequency stability, voltage stability, machine net being coordinated to control characteristic, shortens the cycle of site test, evades the risk of site test, improves the security and stability of electric device operation.There is operation and control flexible, simulation result precision high.
Finally should be noted that; above embodiment is the restriction in order to the technical solution of the utility model to be described but not to the utility model protection domain only; although the utility model is explained in detail with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. a direct current islet operation stability closed-loop simulation checkout equipment, is characterized in that:
Be provided with monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices, speed regulator topworks, extra-high voltage direct-current control protective unit, real-time simulation apparatus, interactive interfacing device and power amplifier;
The first output terminal of described real-time simulation apparatus is connected with the four-input terminal of described interactive interfacing device, the 3rd output terminal of described interactive interfacing device is connected with the first input end of described real-time simulation apparatus, the first output terminal of described interactive interfacing device is connected with the first input end of described power amplifier, the first output terminal of described power amplifier is connected with the first input end of described monitoring power station device, the second output terminal of described power amplifier is connected with the second input end of described excitation controlling device, the 3rd output terminal of described power amplifier is connected with the second input end of described speed regulator electrical adjustment devices, the first output terminal of described monitoring power station device is connected with the first input end of described speed regulator electrical adjustment devices, the second output terminal of described monitoring power station device is connected with the first input end of described excitation controlling device, the first output terminal of described speed regulator electrical adjustment devices is connected with the first input end of described speed regulator topworks, the first output terminal of described excitation controlling device is connected with the first input end of described interactive interfacing device, the first output terminal of described speed regulator topworks is connected with the second input end of described interactive interfacing device, the first output terminal of described extra-high voltage direct-current control protective unit is connected with the 3rd input end of described interactive interfacing device, the second output terminal of described interactive interfacing device is connected with the first input end of described extra-high voltage direct-current control protective unit,
Described monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices are gathered the control observation amount of described real-time simulation apparatus and control information are inputed to described real-time simulation apparatus by interactive interfacing device and power amplifier, and described extra-high voltage direct-current control protective unit carries out the control operation of direct current transportation device.
2. direct current islet operation stability closed-loop simulation checkout equipment according to claim 1, is characterized in that: described monitoring power station device, excitation controlling device and speed regulator electrical adjustment devices are carried out system-level frequency, Voltage Stability Control; Described speed regulator electrical adjustment devices is combined the active power of genset is controlled and the frequency of genset is regulated with speed regulator topworks; Described monitoring power station device, excitation controlling device, speed regulator electrical adjustment devices, speed regulator topworks integral body are controlled the genset of direct current islet operation system; Described extra-high voltage direct-current control protective unit is realized the control to direct current islet operation system.
3. direct current islet operation stability closed-loop simulation checkout equipment according to claim 2, is characterized in that: described real-time simulation apparatus is RTDS emulator.
4. direct current islet operation stability closed-loop simulation checkout equipment according to claim 3, is characterized in that: described real-time simulation apparatus carries out real-time simulation calculating to Large Hydroelectric Set, DC transmission system and corresponding transmission line of alternation current.
5. direct current islet operation stability closed-loop simulation checkout equipment according to claim 1 and 2, is characterized in that: the GTDI board that described interactive interfacing device is provided with the GTAO board of sending for DA signal, the GTAI board of sending into for AD signal, the GTDO board of sending for switching value and sends into for switching value.
6. direct current islet operation stability closed-loop simulation checkout equipment according to claim 1 and 2, is characterized in that: the model of described power amplifier is PA30B Digital Simulation power amplifier.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007667A (en) * | 2014-06-18 | 2014-08-27 | 中国南方电网有限责任公司电网技术研究中心 | Direct current isolated island operational stability closed loop simulation detection equipment and detection method |
| CN104570768A (en) * | 2014-12-31 | 2015-04-29 | 浙江大学 | Information physics semi-physical simulation system based on Rt-Lab and OPNET |
| CN106357181A (en) * | 2016-09-27 | 2017-01-25 | 武汉华乙电气自动化科技有限公司 | Electric generator relay protecting device |
| CN109541313A (en) * | 2018-11-12 | 2019-03-29 | 南方电网科学研究院有限责任公司 | A kind of impedance simulation scanning method and apparatus of alternating current-direct current combined hybrid system |
-
2014
- 2014-06-18 CN CN201420323558.9U patent/CN203930374U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007667A (en) * | 2014-06-18 | 2014-08-27 | 中国南方电网有限责任公司电网技术研究中心 | Direct current isolated island operational stability closed loop simulation detection equipment and detection method |
| CN104570768A (en) * | 2014-12-31 | 2015-04-29 | 浙江大学 | Information physics semi-physical simulation system based on Rt-Lab and OPNET |
| CN106357181A (en) * | 2016-09-27 | 2017-01-25 | 武汉华乙电气自动化科技有限公司 | Electric generator relay protecting device |
| CN109541313A (en) * | 2018-11-12 | 2019-03-29 | 南方电网科学研究院有限责任公司 | A kind of impedance simulation scanning method and apparatus of alternating current-direct current combined hybrid system |
| CN109541313B (en) * | 2018-11-12 | 2021-01-08 | 南方电网科学研究院有限责任公司 | Impedance simulation scanning method and device for alternating current-direct current hybrid system |
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