CN116184870A - Power distribution control logic verification method - Google Patents

Power distribution control logic verification method Download PDF

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Publication number
CN116184870A
CN116184870A CN202211408807.XA CN202211408807A CN116184870A CN 116184870 A CN116184870 A CN 116184870A CN 202211408807 A CN202211408807 A CN 202211408807A CN 116184870 A CN116184870 A CN 116184870A
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China
Prior art keywords
power supply
module
bus bar
control
contactor
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CN202211408807.XA
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Inventor
周俊童
王宽
李阳阳
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Tianjin Aviation Mechanical and Electrical Co Ltd
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Tianjin Aviation Mechanical and Electrical Co Ltd
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Priority to CN202211408807.XA priority Critical patent/CN116184870A/en
Publication of CN116184870A publication Critical patent/CN116184870A/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • 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
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25257—Microcontroller

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The invention belongs to aviation power distribution systems and relates to a power distribution control logic verification method. The method comprises the following steps: establishing a power distribution control logic verification model; the power distribution control logic verification model comprises a control module, a hardware linkage module and a parallel detection module; taking the working condition of the aircraft power supply as input, respectively establishing test cases in working modes of normal power supply working, one power supply failure, two power supply failures, … … and all power supply working failures; the working modes are arranged in pairs to obtain test cases of a power distribution control logic verification model; and carrying out power distribution control logic verification model simulation according to the test case to obtain a logic control result and bus bar parallel connection condition.

Description

Power distribution control logic verification method
Technical Field
The invention belongs to aviation power distribution systems and relates to a power distribution control logic verification method.
Background
The power supply and distribution system of the airplane is an important component of the modern airplane, provides electric energy meeting specified requirements for electric equipment on the airplane, ensures normal operation of the electric equipment, and consists of a power supply system and a power distribution system, and comprises links of electric energy generation, control, conversion, distribution and the like.
The power distribution system reasonably distributes power to the secondary bus bars and provides power distribution control and protection functions, and when one or more generators fail, the control bus bars are mutually switched according to specific logic switching requirements so as to improve the power utilization guarantee capability of loads on the machine.
With the development of multi-electric aircraft, the power distribution system is more and more complex, so the control requirement of the primary power distribution device is gradually increased, the control state is more numerous, and the control logic is more complex. The current implementation method of the control logic of the primary power distribution device is to comb a truth table of input-output relations, then implement manual codes, the code verification needs to be carried out on a physical product, and a verification link is relatively lagged in the whole research and development period. When the control logic is more and more complex, the software using the method has poor reliability, low efficiency, long development period and difficult test. The condition that logic is not closed when state transition is realized is difficult to find in the early stage of design, and the change and maintenance are complicated and inconvenient.
Disclosure of Invention
The invention aims to provide a verification method of power distribution control logic, which is used for debugging and verification in the initial stage of the design of a primary power distribution device, reduces the trial-and-error cost and the research and development period and realizes efficient development.
The aim of the invention can be achieved by the following technical scheme:
a power distribution control logic verification method comprising the steps of:
establishing a power distribution control logic verification model; the power distribution control logic verification model comprises a control module, a hardware linkage module and a parallel detection module; specifically, a control module is established according to control logic, signal input and output control signals of a controller in the primary power distribution device so as to simulate the controller of the primary power distribution device; establishing a hardware linkage module according to the arrangement of a contactor and an intermediate relay in the primary power distribution device and the interconnection and interlocking conditions of the lines; the contactor, the intermediate relay are connected with the bus bar, the power supply and the controller to form a power supply and distribution system; establishing a parallel detection module, taking the state of a contactor in a primary power distribution device as a module input, dividing the power supply path of each bus bar, and taking the number of the power supply paths of each bus bar as an output; the parallel detection module model is used for detecting whether the bus bar has the condition of power supply parallel connection;
taking the working condition of the aircraft power supply as input, respectively establishing test cases in working modes of normal power supply working, one power supply failure, two power supply failures, … … and all power supply working failures; the working modes are arranged in pairs to obtain test cases of a power distribution control logic verification model;
and carrying out power distribution control logic verification model simulation according to the test case to obtain a logic control result and bus bar parallel connection condition.
The hardware linkage module is connected with the signal input, the control module and the parallel detection module; the hardware interlocking module is internally provided with a contactor GB and an intermediate relay thereof, the bus bar is connected with a contactor BTB and an intermediate relay thereof, the corresponding contactor is controlled by receiving a GB control signal and a BTB control signal output by the control module, and meanwhile, the actions of the cross-linked contactor are restricted when the GB and the BTB act through interconnection of the intermediate relay.
The contactor state in the hardware interlocking module is provided for the control module and the parallel detection module for collection through the auxiliary contactor.
The control module is connected with the hardware linkage module and is used for collecting the states of contactors in the hardware linkage module and knowing the working conditions of the power supply and the power supply network through the states of the contactors; the state machine is used in the control module to express the state input, control output and control response relation.
The parallel detection module is used for collecting the state of the GB and BTB contactor output by the hardware interlocking module; providing a direct power supply/conversion power supply path for supplying power to each bus bar; counting the effective power supply paths of each bus bar in the module, and if the number of the effective power supply paths of the bus bars is equal to 1, indicating that the bus bars supply power normally; if the number of the effective power supply paths of the bus bar is greater than 1, the bus bar is indicated to have a power supply parallel connection condition; if the number of effective power supply paths of the bus bar is less than 1, the bus bar is not powered.
The method for judging the effective circuit comprises the following steps:
for the direct power supply path of one bus bar, if GB of the direct power supply path is on, the direct power supply path of the bus bar is an effective power supply path.
The method for judging the effective supply circuit further comprises the following steps:
for the switching power supply path of one bus bar, if GB and BTB of any one switching power supply path are on, the switching power supply path of the bus bar is an effective power supply path.
The working mode is 2 n N is the number of power supplies.
The invention has the beneficial effects that:
according to the power distribution control logic verification of the primary power distribution device, simulation analysis is carried out by constructing the interlocking device, the control logic and the parallel detection module, the coincidence and rationality verification of the power distribution control logic are realized, and the reliability of an airplane power distribution network is improved.
Drawings
Fig. 1 is a cross-sectional view of a primary power distribution device of an aircraft of some type.
Fig. 2 is a diagram of a distribution control logic model and detection module architecture.
Detailed Description
1. A power distribution control logic verification method comprising the steps of:
(1) A control module is established according to control logic, signal input and output control signals of a controller in the primary power distribution device;
(2) Establishing a hardware linkage module according to the arrangement of a contactor and an intermediate relay in the primary power distribution device and the interconnection and interlocking conditions of the lines;
(3) Establishing a parallel detection module model, taking the state of a contactor in a primary power distribution device as module input, dividing the power supply paths of each bus bar, and taking the number of the power supply paths of each bus bar as output;
(4) The method comprises the steps of compiling test cases, taking the working condition of an airplane power supply as input, and respectively establishing the test cases in the working modes of normal power supply operation, power supply failure, two power supply failures, … … and all power supply operation failure. And the working modes are arranged in pairs through an arrangement and combination function, so that the test cases of the verification model are obtained.
(5) And performing model simulation to obtain the parallel connection condition of the logic control result and the bus bar.
The power distribution control logic verification model comprises a signal input, a hardware linkage module, a control module, a parallel detection module and a result output.
The hardware linkage module is connected with the signal input, the control module and the parallel detection module; and the GB and the intermediate relay thereof, the BTB and the intermediate relay thereof are arranged in the hardware linkage module, the GB control signal and the BTB control signal are received to control the corresponding contactor, and meanwhile, the actions of the cross-linked contactor are restrained when the GB and the BTB act through the interconnection of the intermediate relay. The contactor state in the hardware interlocking module is provided for the control module and the parallel detection module for collection through the auxiliary contactor.
The control module is connected with the hardware linkage module, acquires the state of a contactor in the hardware linkage module, and knows the working conditions of the power supply and the power supply network through the state of the contactor. The state machine is used in the control module to express the state input, control output and control response relation.
And the parallel detection module acquires the states of the GB and BTB contactors output by the hardware interlocking module. A power supply/transfer path is provided which can supply power to the bus bar. Counting power supply paths of each bus bar in the module, and if the number of the power supply paths of the bus bars is equal to 1, indicating that the bus bars supply power normally; if the number of the power supply paths of the bus bar is greater than 1, the bus bar is indicated to have the power supply parallel connection condition; if the number of bus bar power supply paths is less than 1, it indicates that the bus bar is out of power supply.
The model test includes all the working modes of the power supply, and simultaneously, the permutation and combination function is used for taking out the permutation of 2 working modes from all the working modes as a test case.
In one embodiment, as shown in FIG. 1, a cross-sectional view of a primary electrical distribution device for a type of aircraft is provided. The primary power distribution device is externally connected to the generator feeder and to control signals of the generator controller (Generator Control Unit, GCU). The primary power distribution device comprises the following parts: generator contactors (Generator Breaker, GB), alternating current BUS bars (AC BUS), BUS TIE Breaker (BTB), and controllers.
The primary distribution device is cross-linked and abstracted to build a verification model of the distribution control logic. The working state of the power supply is used as signal input, the control logic of the controller in the primary power distribution device is abstracted into a control module, and other components in the primary power distribution device establish a hardware linkage module.
As shown in fig. 2, a distribution control logic model and a detection module architecture diagram are provided. The device comprises a signal input module, a hardware linkage module, a control module, a parallel detection module and a detection output. The hardware linkage module is connected with the signal input, the control module and the parallel detection module; and the hardware linkage module is internally provided with a GB and an intermediate relay thereof, a BTB and an intermediate relay thereof, receives a GB control signal of the GCU and a BTB control signal of the control module to control corresponding contactors, and restricts the actions of the crosslinking contactors when the GB and the BTB act through interconnection of the intermediate relay so as to prevent the occurrence of the alternating current parallel connection condition. The contactor state in the hardware interlocking module is provided for the control module and the parallel detection module for collection through the auxiliary contactor.
The control module is connected with the hardware linkage module, acquires the state of a contactor in the hardware linkage module, and knows the working conditions of the power supply and the power supply network through the state of the contactor. The controller 1 and the controller 2 both collect the GB state. The controller 1 also acquires BTB1, BTB2, BTB5 states, and controls BTB1, BTB2, BTB5. The controller 2 also collects BTB3, BTB4, and controls BTB3, BTB4. The controllers 1 and 2 interact BTB state information collected by the other party through a communication mode.
The state machine is used in the control module to express the state input, control output and control response relation. When the power supply fails, a preset BTB contactor is controlled to act, the power grid failure part is isolated, and a transfer circuit path between the normal power supply and the failure power bus bar is established.
And the parallel detection module acquires the states of the GB and BTB contactors output by the hardware interlocking module. The parallel detection module is internally provided with direct power supply/conversion power supply paths for supplying power to the bus bars. As shown in FIG. 1, each of the AC BUS 1-AC BUS4 has four power supply paths, for example, the ACBUS1 power supply path may be a direct power supply path for GEN1 configured by GEN1-GB1-ACBUS1 to power AC BUS1, a conversion power supply path for GEN2 configured by GEN2-GB2-ACBUS2-BTB2-BTB1-AC BUS1 to power AC BUS1, a conversion power supply path for GEN3 configured by GEN3-GB3-AC BUS 3-BTB3-BTB5-BTB1-AC BUS1 to power AC BUS1, and a conversion power supply path for GEN4 configured by GEN4-GB4-AC BUS4-BTB4-BTB5-BTB1-AC BUS1 to power AC BUS 1. When all the preset contactors on the power supply path are on, a path from the power source to the bus bar is formed, and the power supply path is effective. Counting the effective power supply paths of each bus bar in the module, and if the number of the effective power supply paths of the bus bars is equal to 1, indicating that the bus bars supply power normally; if the number of the effective power supply paths of the bus bar is greater than 1, the bus bar is indicated to have a power supply parallel connection condition; if the number of effective power supply paths of the bus bar is less than 1, the bus bar is not powered. The bus bar is output in the number of power supply paths to reflect whether the distribution control logic is compatible with the design.
Further, in order to fully verify the correctness of the power distribution control logic, the model test case not only comprises all working modes of the power supply, namely 16 working modes of normal working of 4 generators, 1 generator failure, 2 generator failure, 3 generator failure and 4 generator failure. Meanwhile, the permutation and combination function is used for taking out the permutation of 2 working modes from 16 working modes, and 240 test cases are obtained in total.
According to the invention, the primary power distribution device control logic is subjected to modeling simulation analysis, so that the running result of the power distribution control logic is verified to be in accordance with the design, the control logic can be verified in the initial stage of the design, and the accuracy of the control logic is ensured. Meanwhile, aiming at the non-parallel aircraft alternating current power supply network, on the basis of control logic verification, whether the parallel operation condition exists in the alternating current network is verified by calculating a bus power supply path mode. The invention can shorten the design period of the primary power distribution device, reduce the trial-and-error and iteration cost of the device, and improve the reliability of the power distribution control of the aircraft.

Claims (10)

1. A method for verifying distribution control logic, comprising the steps of:
establishing a power distribution control logic verification model; the power distribution control logic verification model comprises a control module, a hardware linkage module and a parallel detection module; specifically, a control module is established according to control logic, signal input and output control signals of a controller in the primary power distribution device so as to simulate the controller of the primary power distribution device; establishing a hardware linkage module according to the arrangement of a contactor and an intermediate relay in the primary power distribution device and the interconnection and interlocking conditions of the lines; the contactor, the intermediate relay are connected with the bus bar, the power supply and the controller to form a power supply and distribution system; establishing a parallel detection module, taking the state of a contactor in a primary power distribution device as a module input, dividing the power supply path of each bus bar, and taking the number of the power supply paths of each bus bar as an output; the parallel detection module model is used for detecting whether the bus bar has the condition of power supply parallel connection;
taking the working condition of the aircraft power supply as input, respectively establishing test cases in working modes of normal power supply working, one power supply failure, two power supply failures, … … and all power supply working failures; the working modes are arranged in pairs to obtain test cases of a power distribution control logic verification model;
and carrying out power distribution control logic verification model simulation according to the test case to obtain a logic control result and bus bar parallel connection condition.
2. The method of claim 1, wherein the hardware linkage module is connected with the signal input, control module, parallel detection module; the hardware interlocking module is internally provided with a contactor GB and an intermediate relay thereof, the bus bar is connected with a contactor BTB and an intermediate relay thereof, the corresponding contactor is controlled by receiving a GB control signal and a BTB control signal output by the control module, and meanwhile, the actions of the cross-linked contactor are restricted when the GB and the BTB act through interconnection of the intermediate relay.
3. The method of claim 2, wherein contactor status within the hardware interlock module is provided to the control module and the parallel detection module for collection via contactor auxiliary contacts.
4. The method according to claim 2, wherein the control module is connected to the hardware linkage module, and is configured to collect a contactor status in the hardware linkage module, and to know a power supply and a power supply network working condition through the contactor status; the state machine is used in the control module to express the state input, control output and control response relation.
5. The method of claim 2, wherein the number of control modules is consistent with the number of controllers of the verification object; the control modules are connected with each other to describe the data interaction condition between the controllers.
6. The method of claim 2, wherein the control module comprises a data processing module for describing status input data processing and timing conditions.
7. The method of claim 2, wherein the parallel detection module is configured to collect GB, BTB contactor status output by the hardware chaining module; providing a direct power supply/conversion power supply path for supplying power to each bus bar; counting the effective power supply paths of each bus bar in the module, and if the number of the effective power supply paths of the bus bars is equal to 1, indicating that the bus bars supply power normally; if the number of the effective power supply paths of the bus bar is greater than 1, the bus bar is indicated to have a power supply parallel connection condition; if the number of effective power supply paths of the bus bar is less than 1, the bus bar is not powered.
8. The method of claim 2, wherein the method of determining the available supply circuit comprises:
for the direct power supply path of one bus bar, if GB of the direct power supply path is on, the direct power supply path of the bus bar is an effective power supply path.
9. The method of claim 2, wherein the method of determining an active power supply circuit further comprises:
for the switching power supply path of one bus bar, if GB and BTB of any one switching power supply path are on, the switching power supply path of the bus bar is an effective power supply path.
10. The method of claim 1, wherein the operating mode is 2 n N is the number of power supplies.
CN202211408807.XA 2022-11-11 2022-11-11 Power distribution control logic verification method Pending CN116184870A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117439029A (en) * 2023-12-20 2024-01-23 天津航空机电有限公司 Power distribution logic implementation method
CN117439022A (en) * 2023-12-20 2024-01-23 天津航空机电有限公司 Distribution board box protection structure and protection method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117439029A (en) * 2023-12-20 2024-01-23 天津航空机电有限公司 Power distribution logic implementation method
CN117439022A (en) * 2023-12-20 2024-01-23 天津航空机电有限公司 Distribution board box protection structure and protection method
CN117439022B (en) * 2023-12-20 2024-04-09 天津航空机电有限公司 Distribution board box protection structure and protection method
CN117439029B (en) * 2023-12-20 2024-04-09 天津航空机电有限公司 Power distribution logic implementation method

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