CN105116874A - MMC sub module digital physical hybrid simulation method and system - Google Patents

MMC sub module digital physical hybrid simulation method and system Download PDF

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Publication number
CN105116874A
CN105116874A CN201510418386.2A CN201510418386A CN105116874A CN 105116874 A CN105116874 A CN 105116874A CN 201510418386 A CN201510418386 A CN 201510418386A CN 105116874 A CN105116874 A CN 105116874A
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China
Prior art keywords
submodule
simulation
physical
physical simulation
valve control
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CN105116874B (en
Inventor
俎立峰
董朝阳
胡四全
李坤
樊大帅
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State Grid Corp of China SGCC
XJ Electric Co Ltd
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State Grid Corp of China SGCC
XJ Electric Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
    • G05B23/0213Modular 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

Abstract

The invention relates to an MMC sub module digital physical hybrid simulation method and system. The method comprises determining the number m<i> of digital simulation sub modules which need to be generated by physical simulation sub modules i in each bridge arm of each phase, issuing m<i> control instructions to the corresponding physical simulation sub modules i by a valve control system, performing statistics on kinds of the m<i> control instructions and the numbers of the control instructions corresponding to the control instruction kinds, judging the control instruction executed by the corresponding physical simulation sub modules i, copying capacitance voltages and states of the corresponding physical simulation sub modules i to obtain m<i> copies, and uploading the m<i> copies to the valve control system. The system of the invention comprises the value control system, a physical simulation module and a digital simulation device, and the digital simulation device, the physical simulation device and the valve control system are connected through optical fibers. On the premise that the number of the physical simulation sub modules is not increased, the method and the system can comprehensively verify a valve control voltage-sharing function and greatly save material cost.

Description

A kind of MMC submodule numeral physical mixed analogy method and system
Technical field
The invention belongs to the Technology of HVDC based Voltage Source Converter field of electric system, be specifically related to a kind of MMC submodule numeral physical mixed analogy method and system.
Technical background
Modular multi-level flexible direct-current transmission (MMC-HVDC) is the HVDC Transmission Technology of a new generation.Except having conventional high-tension direct current transportation advantage, flexible direct current power transmission system also can be powered directly to remote small-sized island load, and connect decentralized power s, operation control method is flexible and changeable, can reduce transmission line of electricity voltage-drop and flickering, improves the quality of power supply.Flexible DC power transmission is powered on the construction of DC distribution net, island, in Power System Interconnection etc. relative Traditional DC transmission of electricity have greater advantage.
Flexible direct current transmission converter valve is composed in series by submodule, and along with the improving constantly of electric pressure of flexible DC power transmission, soft straight converter valve submodule quantity is also sharply increasing, and usual each brachium pontis is made up of a hundreds of submodule.Flexible direct current transmission converter valve opertaing device is the device of direct connection control submodule, and its Core Feature is that submodule is all pressed.Increasing of submodule quantity just brings extreme difficulty to the testing authentication of valve control system.
Traditional valve control uniform voltage function test adopts the physical simulation submodule and valve control connecting test that reduce by correlation parameter.Valve control reduces the physical simulation submodule of controlling the size limited by also corresponding for controling parameters.Therefore, valve control access submodule quantity is far smaller than maximum access quantity amount.
And if employing accesses the connecting test of a physical simulation submodule on a sub-module interface of valve control, so need to produce a large amount of physical simulation submodule.Cost cannot accept.Therefore, be badly in need of a kind of ASM system of design, to use less physical simulation submodule, reach the comprehensive checking to valve control system uniform voltage function.
Summary of the invention
The invention provides a kind of MMC submodule numeral physical mixed analogy method and system, be intended to solve traditional valve control function test method when verifying valve control uniform voltage function comprehensively, owing to needing to use a large amount of physical simulation submodule to cause the problem of high cost.
For solving the problem, a kind of MMC submodule numeral of the present invention physical mixed analogy method, comprises the steps:
1) for a physical simulation submodule i, for simulating the m be in same brachium pontis iindividual submodule, physics submodule is actual submodule, and i is physical simulation submodule sequence number;
2) valve control system issues m to physical simulation submodule i iindividual steering order, statistics m ithe kind of individual steering order and steering order number corresponding to each steering order kind, if all steering order is locking, then physical simulation submodule i performs lock-in control instruction; If input control number of instructions is more than or equal to excision steering order number, then physical simulation submodule i performs input control instruction, otherwise, perform excision steering order; And the capacitance voltage of physical simulation submodule i and state are copied m respectively ipart represents m icapacitance voltage and the state of individual submodule are uploaded to valve control system.
A kind of MMC submodule numeral of the present invention physical mixed simulation system, this system comprises valve control system, also comprise for the digital simulator corresponding with each brachium pontis, digital simulator is by several physical simulation submodules in Fiber connection valve control system and each brachium pontis; Described digital simulator determines that each physical simulation submodule needs the digital simulation submodule number m of simulation i, the steering order that receiving valve Ore-controlling Role issues, after judging by analysis, is handed down to corresponding physical simulation submodule, and the capacitance voltage of each physical simulation submodule and state is copied m respectively ivalve control system is uploaded to after part.
Described digital simulator is provided with and optical fiber interface that every brachium pontis switch board Neutron module interface is corresponding mutually every in valve control system.
MMC submodule numeral physical mixed analogy method of the present invention and system, the method combined with physical simulation by digital simulation simulates multiple digital simulation submodule, thus add the ASM quantity of cut-in valve control, under the prerequisite of quantity not increasing physics ASM, valve control uniform voltage function can be verified comprehensively, save Material Cost greatly.
Accompanying drawing explanation
The control of Fig. 1 conventional valve and submodule connection layout;
Fig. 2 numeral physical mixed ASM system;
Fig. 3 numeral physical mixed environmental simulation submodule instruction product process figure.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described in detail.
MMC submodule numeral physical mixed analogy method embodiment
MMC submodule numeral physical mixed analogy method comprises the steps:
1) for a physical simulation submodule i, for simulating the m be in same brachium pontis iindividual submodule, physics submodule is actual MMC submodule, and i is physical simulation submodule sequence number;
2) valve control system issues m to physical simulation submodule i iindividual steering order, statistics m ithe kind of individual steering order and steering order number corresponding to each steering order kind, if all steering order is locking, then physical simulation submodule i performs lock-in control instruction; If input control number of instructions is more than or equal to excision steering order number, then physical simulation submodule i performs input control instruction, otherwise, perform excision steering order; And the capacitance voltage of physical simulation submodule i and state are copied m respectively ipart represents m icapacitance voltage and the state of individual submodule are uploaded to valve control system.
Introduce above-mentioned steps in detail below:
As shown in Figure 1, when the number of the submodule interface of valve control system is much larger than the physical simulation submodule number of reality, just need to simulate the generation digital simulation submodule corresponding with the submodule interface of the every mutually each brachium pontis of valve control system by digital simulator, realize the comprehensive checking to valve control system function.
For brachium pontis in A phase in the present embodiment, for step 1) the submodule interface of brachium pontis is N number of in valve control system A phase, and actual physics ASM number is n, n<N, so, determine that the physical simulation submodule i in every mutually each brachium pontis need simulate the digital simulation submodule number m of generation i, namely have N=m 1+ m 2+ ... + m n, i=1,2,3 ..., n.
Be preferably for each physical simulation submodule in the present embodiment, all simulation generates m digital simulation submodule, and namely the number of the digital simulation submodule that each physics submodule is corresponding is identical.
Certain about other embodiments, the digital simulation submodule number of each physical simulation submodule simulation can be different, as long as total the number of digital simulation submodule equals N.
For step 2) in the valve control system steering order that is handed down to physical simulation submodule be defined as C i, m, wherein i be actual physics ASM numbering, i=1,2 ... n.M is digital simulation submodule numbering; The steering order C that the digital simulation submodule corresponding to i-th physics submodule receives i, 1, C i, 2c i, mthe kind of middle steering order and number corresponding to each kind are added up, the kind of steering order comprises locking, input and excision, if the number of input control instruction is more than or equal to the number of excision steering order, then the steering order of i-th physical simulation submodule is input control instruction, if C i, 1, C i, 2c i, min all steering orders be lock-in control instruction, the steering order of i-th physical simulation submodule is lock-in control instruction, otherwise the steering order of i-th physical simulation submodule is excision steering order.
In the present embodiment, n physical simulation submodule capacitor voltage is defined as U i, i=1,2 ... n; N physical simulation submodule state is defined as S i, i=1,2 ... n, S i=0 instruction submodule is normal, S i=1 instruction sub-module fault.So, for the capacitance voltage U of physical simulation submodule i iwith state S i, the capacitance voltage making m the digital simulation submodule corresponding with this physical simulation submodule i is U i, 1=U i, 2=...=U i, m=U i; The state making m the digital simulation submodule corresponding with this physical simulation submodule i is S i, 1=S i, 2=...=S i, m=S i, namely respectively by the capacitance voltage U of physical simulation submodule i iwith state S icopy m part respectively and represent the capacitance voltage of m digital simulation submodule and state uploads to valve control system by optical fiber.
In like manner, to the lower brachium pontis of valve control system A phase, the upper and lower brachium pontis of B phase, C phase upper and lower brachium pontis submodule interface adopts above-mentioned analogy method, realizes the checking of valve control uniform voltage function.
MMC submodule numeral physical mixed simulation system embodiment
Traditional valve control system function test system as shown in Figure 1, the present embodiment adds digital simulator on traditional valve control system function test system, as shown in Figure 2, system in the present embodiment comprises valve control system, for the digital simulator corresponding with each brachium pontis, digital simulator is by several physical simulation submodules in Fiber connection valve control system and each brachium pontis; Digital simulator determines that each physical simulation submodule needs the digital simulation submodule number m of simulation ithe steering order that receiving valve Ore-controlling Role issues, and according to above-mentioned analogy method step 2) in comparative approach carry out after analysis judges, being handed down to corresponding physical simulation submodule, and the capacitance voltage of each physical simulation submodule and state being copied m respectively to steering order ivalve control system is uploaded to after part.
Utilize the numeral of the MMC submodule in the present embodiment physical mixed simulation system can realize above-mentioned analogy method, under the prerequisite of quantity not increasing physics ASM, checking valve control uniform voltage function, saves Material Cost greatly comprehensively.
In above specific embodiment, antithetical phrase module simulation system carries out character express, formula explanation.The present invention is not limited to described embodiment.For those of ordinary skill in the art, according to instruction of the present invention, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out embodiment without departing from the principles and spirit of the present invention, amendment, replacement and modification still fall within the scope of protection of the present invention.

Claims (3)

1. a MMC submodule numeral physical mixed analogy method, it is characterized in that, the method comprises:
1) for a physical simulation submodule i, for simulating the m be in same brachium pontis iindividual submodule, physics submodule is actual MMC submodule, and i is physical simulation submodule sequence number;
2) valve control system issues m to physical simulation submodule i iindividual steering order, statistics m ithe kind of individual steering order and steering order number corresponding to each steering order kind, if all steering order is locking, then physical simulation submodule i performs lock-in control instruction; If input control number of instructions is more than or equal to excision steering order number, then physical simulation submodule i performs input control instruction, otherwise, perform excision steering order; And the capacitance voltage of physical simulation submodule i and state are copied m respectively ipart represents m icapacitance voltage and the state of individual submodule are uploaded to valve control system.
2. one kind adopts the MMC submodule numeral physical mixed simulation system of above-mentioned analogy method, this system comprises valve control system, it is characterized in that, this system also comprises for the digital simulator corresponding with each brachium pontis, and digital simulator is by several physical simulation submodules in Fiber connection valve control system and each brachium pontis; Described digital simulator determines that each physical simulation submodule needs the digital simulation submodule number m of simulation i, the steering order that receiving valve Ore-controlling Role issues, after judging by analysis, is handed down to corresponding physical simulation submodule, and the capacitance voltage of each physical simulation submodule and state is copied m respectively ivalve control system is uploaded to after part.
3. MMC submodule numeral physical mixed simulation system according to claim 2, is characterized in that, described digital simulator is provided with and optical fiber interface that every brachium pontis switch board Neutron module interface is corresponding mutually every in valve control system.
CN201510418386.2A 2015-07-16 2015-07-16 A kind of MMC submodules numeral physical mixed analogy method and system Active CN105116874B (en)

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CN108918998A (en) * 2018-06-25 2018-11-30 南方电网科学研究院有限责任公司 A kind of MMC power module control protection closed loop test method and system
CN111221322A (en) * 2020-01-07 2020-06-02 国家电网有限公司 Valve control system function detection system and simulation method, device and system

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