CN106773979B - A kind of managing and control system and method suitable for shipping shore power system power supply and information - Google Patents
A kind of managing and control system and method suitable for shipping shore power system power supply and information Download PDFInfo
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Abstract
The present invention proposes a kind of managing and control system and method suitable for shipping shore power system power supply and information, including harbour supervisory layers and information processing layer；Harbour supervisory layers, including data acquisition module, intelligent monitored control module and PLC controller；Information processing layer, including control processor, DSP, FPGA, signal test and conversion module and data memory module；The input terminal of data acquisition module connects each electrical equipment of shipping shore power system by data/address bus, it is communicated between the data acquisition module, intelligent monitored control module, control processor, DSP, FPGA, signal test and conversion module, data memory module and PLC controller by data/address bus, described DSP, FPGA connect the power inverter of shipping shore power system by data/address bus；Different voltages grade, the frequency that the system can go on board for bank electricity are acquired and distinguish, and reach capture more accurately and quickly and vehicle combined floodgate point.
Description
Technical field
Technical field is managed and controlled the invention belongs to shore electric power and information, and in particular to one kind is suitable for ship bank
The managing and control system and method for electric system power supply and information.
Background technique
Harbour is as the important link in China's window open to the outside world and modern logistics supply chain, and energy consumption is whole
Occupy comparable specific gravity in a transportation industry.Ship berthing is when harbour carries out cargo handling, the electricity consumption of various electrical equipments
Mostly from ship generating diesel engine, ship causes very big pressure to the environment at harbour in harbour operation diesel engine.If
The ship to reach port allows hand over bank electricity, then the generating diesel engine of its own can be closed, so, it will be able to drop significantly
Low ship generating diesel engine generated exhaust gas, grease and noise when running.Meanwhile reach port can be to port side using bank electricity for ship
Economic benefit is brought with ship, reduces consumption of the ship to the energy.On the whole, ring of the ship shore electric power technology for China
Border protection, energy-saving and emission-reduction and sustainable development all have great importance.
Ship for bank electricity and vehicle object be ship own power system and shore electric power on the bank, gone on board according to bank electricity
Different voltages grade, shipping shore power system can be divided into low-voltage power supply and high voltage supply two ways again, it is required that more accurate, fast
Speed capture and vehicle combined floodgate point.When ship uses shore electric power, voltage, frequency and the phase angle difference of marine generator are adjusted, is made
It reaches synchronous with shore electric power, finally completes the same period and vehicle.Meanwhile ship is entire shore electric power system for bank electricity joint operating device
A part of system should have telecommunication energy in order to normally monitor the state in joint operating device and its Engagement
Power, monitoring center on the bank can read the information such as record Engagement, time and failure.Therefore, shipping shore power system
Core technology is that the control to ship shore electric power and its information is studied.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of control system suitable for shipping shore power system power supply and information
System and method.
Technical solution of the present invention is as follows:
A kind of managing and control system suitable for shipping shore power system power supply and information, including harbour supervisory layers and information processing
Layer；
The harbour supervisory layers, including data acquisition module, intelligent monitored control module and PLC controller；
The information processing layer, including control processor, DSP, FPGA, signal test and conversion module and data store mould
Block；
The input terminal of the data acquisition module connects each electrical equipment of shipping shore power system, institute by data/address bus
State data acquisition module, intelligent monitored control module, control processor, DSP, FPGA, signal test and conversion module, data storage mould
It is communicated between block and PLC controller by data/address bus, described DSP, FPGA connect ship shore electric system by data/address bus
The power inverter of system；
The data acquisition module, the electricity consumption information of each electrical equipment for acquiring shipping shore power system in real time,
Power consumption parameter information, operating status and warning message, real-time transmission to intelligent monitored control module；
The intelligent monitored control module, the power consumption parameter letter of each electrical equipment for the shipping shore power system to acquisition
Breath, operating status and warning message are monitored, and judge whether each electrical equipment works in voltage rating, rated current and volume
Determine under power and whether the operating status of each electrical equipment normal, if electrical equipment beyond its voltage rating, rated current or
Rated power or electrical equipment operating status are abnormal, then correspond to equipment to it by PLC controller and carry out on-off control, and
By the electricity consumption information, power consumption parameter information, electrical equipment operating status of each electrical equipment of the shipping shore power system of acquisition
Information processing layer is sent to by data/address bus with warning message；
The PLC controller, for exceeding its voltage rating, rated current or rated power, Huo Zheyong in electrical equipment
When electric equipment operating status exception, equipment is corresponded to it and carries out on-off control；
The control processor, for the computer with human-computer interaction interface, for showing the shipping shore power system of acquisition
Each electrical equipment electricity consumption information, power consumption parameter information, electrical equipment operating status and warning message, in operator
When carrying out operation out of service or simultaneously vehicle operation, operation signal is sent to DSP and FPGA, when electrical equipment exceeds its specified electricity
When pressure, rated current or rated power or electrical equipment operating status exception, operator is controlled by human-computer interaction interface
PLC controller corresponds to equipment to it and carries out on-off control；
The DSP, for calculating and judging whether ship electricity power supply and shore electric power meet simultaneously vehicle requirement, and in ship electricity power supply
Or shore electric power is unsatisfactory for and when vehicle requirement, sends reduce-speed sign, acceleration signals, boost signal or buck signal to ship shore electric
The power inverter of system until ship electricity power supply and shore electric power meet and vehicle requirement, and calculates ship electricity power supply and shore electric power
Closing phase angle and closing time, send a control signal to shipping shore power system power inverter complete and vehicle operation；
The FPGA, for carrying out the realization of data/address bus synchronous coding when DSP sends a control signal to power inverter
Modulus signal is synchronous, and carries out normal operating condition and alarm condition collection；
The signal test and conversion module is detected and is turned for the analog signal to data collecting module collected
It changes, is sent to DSP and FPGA；
The data memory module, the shipboard for storage vessel bank electricity system export electric current, shipboard output voltage, shipboard
Output frequency, net side export electric current, net side input voltage, warning time, fault time.
Shipping shore power system power supply and information are carried out using the managing and control system for being suitable for shipping shore power system power supply and information
Control method, comprising the following steps:
Step 1: acquired in real time by data acquisition module each electrical equipment of shipping shore power system electricity consumption information,
Power consumption parameter information, electrical equipment operating status and warning message, real-time transmission to intelligent monitored control module；
Step 2: being believed by power consumption parameter of the intelligent monitored control module to each electrical equipment of the shipping shore power system of acquisition
Breath, operating status and warning message are monitored, and judge whether each electrical equipment works in voltage rating, rated current and volume
Determine under power and whether the operating status of each electrical equipment normal, if electrical equipment beyond its voltage rating, rated current or
Rated power or electrical equipment operating status are abnormal, then correspond to equipment to it by PLC controller and carry out on-off control, and
By the electricity consumption information, power consumption parameter information, electrical equipment operating status of each electrical equipment of the shipping shore power system of acquisition
Information processing layer is sent to by data/address bus with warning message；
Step 3: the electricity consumption information of each electrical equipment of the shipping shore power system of control processor display acquisition, electricity consumption
Parameter information, electrical equipment operating status and warning message, when electrical equipment exceeds its voltage rating, rated current or specified function
When rate or electrical equipment operating status exception, operator corresponds to it by human-computer interaction interface control PLC controller and sets
It is standby to carry out on-off control；
Step 4: when operator issues simultaneously vehicle sign on by the human-computer interaction interface of control processor, at control
It manages device and DSP is sent a command to by data/address bus；
Step 5: judging whether ship electricity power supply and shore electric power meet simultaneously vehicle requirement by DSP and FPGA, and in ship electricity electricity
When source or shore electric power are unsatisfactory for simultaneously vehicle requirement, reduce-speed sign, acceleration signals, boost signal or buck signal are sent to ship bank
The power inverter of electric system calculates ship electricity power supply and shore electric power until ship electricity power supply and shore electric power meet and vehicle requirement
Closing phase angle and closing time, send a control signal to shipping shore power system power inverter complete and vehicle operation；
Step 5.1: the voltage of shore electric power, the frequency of shore electric power, the phase angle of shore electric power, ship electricity are calculated by DSP
The voltage of system, the frequency of ship electric system, the phase angle of ship electric system, shore electric power and ship electricity power supply voltage difference, shore electric power
With the difference on the frequency of ship electricity power supply；
Step 5.2: judging whether the voltage of shore electric power and frequency meet the intrinsic configuration of shipping shore power system by DSP
And its fluctuation is no more than setting fluctuation threshold, if so, 5.3 are thened follow the steps, otherwise, return step 4；
Step 5.3: being used based on reactive power compensation algorithm by DSP according to two power inverters of shore electric power
Voltage, frequency and power determine the output voltage amplitude regulated quantity of two power inverters of shore electric power；
Step 5.3.1: it is determined in shore electric power according to voltage, frequency and the power of the two of shore electric power power inverters
Two parallel power inverter output currents:
Wherein,For the output electric current of the first shore electric power power inverter,For the second shore electric power power inverter
Export electric current, Z1=R1+jX1For the equivalent output impedance of the first shore electric power power inverter, R1For the first shore electric power power
The resistance of inverter, X1For the reactance of the first shore electric power power inverter, j is imaginary unit, Z2=R2+jX2For the second bank electricity
The equivalent output impedance of power inverter, R2For the resistance of the second shore electric power power inverter, X2For the second shore electric power
The reactance of power inverter,For load side voltage in shore electric power, U0For for load-side amplitude in shore electric power,For the output voltage of the first shore electric power power inverter, U1For the output of the first shore electric power power inverter
Voltage magnitude,For the output voltage phase of the first shore electric power power inverter,For the second shore electric power function
The output voltage of rate inverter, U2For the output voltage amplitude of the second shore electric power power inverter,For the second shore electric power
The output voltage phase of power inverter；
Step 5.3.2: the circulation in shore electric power between two power inverters is calculated:
(1) when two power inverter output voltages only exist difference in magnitude phase difference may be not present in shore electric power, then
Circulation in shore electric power between two power invertersCalculation formula it is as follows:
(2) when two power inverter output voltages only exist phase difference difference in magnitude may be not present in shore electric power, then
Circulation in shore electric power between two power invertersCalculation formula it is as follows:
Step 5.3.3: calculate in shore electric power between two power inverters because the apparent energy of circulating loss is SH、
Because of the active-power P of circulating lossHWith the reactive power Q because of circulating lossH:
(1) when two power inverter output voltages only exist difference in magnitude phase difference may be not present in shore electric power, then
In shore electric power between two power inverters because circulating loss apparent energy be SH, because of the active-power P of circulating lossH
With the reactive power Q because of circulating lossHCalculation formula it is as follows:
Wherein, R1=R2=Ri, X1=X2=Xi；
(2) when two power inverter output voltages only exist phase difference difference in magnitude may be not present in shore electric power, then
In shore electric power between two power inverters because circulating loss apparent energy be SH, because of the active-power P of circulating lossH
With the reactive power Q because of circulating lossHCalculation formula it is as follows:
(3) when in shore electric power two power inverter output voltages not only there is phase difference but also there are when difference in magnitude, then bank
Active-power P in power supply between two power inverters because of circulating lossHWith the reactive power Q because of circulating lossHCalculating
Formula is as follows:
Wherein, Δ U is the voltage amplitude value difference of two power inverters in shore electric power,For two function in shore electric power
The voltage phase difference of rate inverter；
Step 5.3.4: according to step 5.3.3 obtain because circulating loss active-power PHWith it is idle because of circulating loss
Power QHDetermine the voltage amplitude value difference of two power inverters in shore electric powerWith phase difference U:
Step 5.3.5: determine that two power inverter output voltage amplitudes in the shore electric power after PI is adjusted, which are added, to be adjusted
Measure Δ Ui:
Wherein, Kp, KIFor PI adjustment parameter, Δ U1=Δ U2=Δ Ui, Δ U1For shore electric power First power inverter
Output voltage amplitude regulated quantity, Δ U2For second power inverter output voltage amplitude regulated quantity of shore electric power, QHiFor bank electricity
For i-th power inverter of power supply because of the reactive power of circulating loss, i=1,2, s are that Laplace transformation after pi regulator is added.
Step 5.4: passing through the output voltage amplitude regulated quantity of DSP and FPGA regulation power inverter；
Step 5.5: judge whether the difference on the frequency of shore electric power and ship electricity power supply meets simultaneously vehicle requirement by DSP, if so,
Step 5.7 is executed, otherwise, executes step 5.6；
Step 5.6: judging whether the frequency of ship electricity power supply is greater than the frequency of shore electric power by DSP, if so, passing through DSP
Deceleration pulse is sent to the power inverter of ship electric system with FPGA, return step 5.1 is otherwise, electric to ship by DSP and FPGA
The power inverter of system sends acceleration pulse, return step 5.1；
Step 5.7: judge whether the voltage difference of shore electric power and ship electricity power supply meets simultaneously vehicle requirement by DSP, if so,
Step 5.9 is executed, otherwise, executes step 5.8；
Step 5.8: judging whether the voltage of ship electricity power supply is greater than the frequency of shore electric power by DSP, if so, passing through DSP
Decompression pulse is sent to the power inverter of ship electric system with FPGA, return step 5.1 is otherwise, electric to ship by DSP and FPGA
The power inverter of system sends voltage boosting pulse, return step 5.1；
Step 5.9: the closing phase angle and closing time of ship electricity power supply and shore electric power are calculated by DSP；
Step 5.10: switching signal is sent to the power inverter of ship electric system and the function of bank electricity system by DSP and FPGA
Rate inverter realizes closing operation；
Step 6: by control processor display acquisition shipping shore power system each electrical equipment electricity consumption information,
Power consumption parameter information, electrical equipment operating status and warning message；
Step 7: electric current, shipboard output voltage, ship are exported by the shipboard of data memory module storage vessel bank electricity system
Side output frequency, net side export electric current, net side input voltage, warning time, fault time.
Beneficial effects of the present invention:
The present invention proposes a kind of managing and control system and method suitable for shipping shore power system power supply and information, which has
Telecommunication capabilities can be acquired and be handled to ship-to-shore Engagement, time and fault message by monitoring center；It should
System includes harbour supervisory layers and information processing layer, and each electrical equipment is connected by industry-standard data bus, is cooperated altogether
With completion bank electricity information management task；Different voltages grade, the frequency that the system can go on board for bank electricity are acquired and area
Point, to reach capture more accurately and quickly and vehicle combined floodgate point, so that successfully using bank electricity system when ship pulls in shore；It presses
According to Redundancy Design, redundant system can be automatically switched to when main system breaks down, when switching can guarantee to the continuous of ship
Normal power supply；Using reactive power shore electric power Parallel Control is based on, this control helps to improve single unsteady flow in shore electric power
The multi-party planar defect such as device, technique, heat dissipation, redundancy is easy to dilatation by carrying out parallel connection to current transformer in shore electric power, reliably
Property it is high and easy to maintain.
Detailed description of the invention
Fig. 1 is bank electricity system and ship electric system connection schematic diagram in the specific embodiment of the invention；
Wherein, 1- bank electrical connection system, 2- bank side isolating transformer, 3- bank side are protected system, 4- bank side breaker and are connect
Ground switch, the control of 5- bank side and interface equipment, 6- bank ship connects and interactive device, the control of 7- shipboard and interface equipment, 8- shipboard
Protection system, 9- shipboard breaker and earthing switch, 10- boat-carrying transformer, 11- bank electricity access point；
Fig. 2 is the structure for being suitable for the managing and control system of shipping shore power system power supply and information in the specific embodiment of the invention
Schematic diagram；
Fig. 3 is the process for being suitable for the management-control method of shipping shore power system power supply and information in the specific embodiment of the invention
Figure.
Specific embodiment
The specific embodiment of the invention is described in detail with reference to the accompanying drawing.
It is as shown in Figure 1 bank electricity system and ship electric system connection schematic diagram, i.e. each electrical equipment of shipping shore power system,
Including bank electrical connection system 1, bank side isolating transformer 2, bank side protection system 3, bank side breaker and earthing switch 4, the control of bank side
System is connected with interface equipment 5, bank ship and interactive device 6, shipboard control and interface equipment 7, shipboard protection system 8, shipboard open circuit
Device and earthing switch 9, boat-carrying transformer 10, bank electricity access point 11.
The present invention proposes a kind of managing and control system suitable for shipping shore power system power supply and information, as shown in Fig. 2, including port
Mouth supervisory layers and information processing layer.
Harbour supervisory layers, including data acquisition module, intelligent monitored control module and PLC controller.
Information processing layer, including control processor, DSP, FPGA, signal test and conversion module and data memory module.
The input terminal of data acquisition module connects each electrical equipment of shipping shore power system by data/address bus, and data are adopted
Collect module, intelligent monitored control module, control processor, DSP, FPGA, signal test and conversion module, data memory module and PLC
It is communicated between controller by data/address bus, DSP, FPGA connect the power inverting of shipping shore power system by data/address bus
Device.
In present embodiment, data/address bus is industry-standard data bus CAN/AS INTERFACE/INTERBUS.
Data acquisition module, the electricity consumption information of each electrical equipment for acquiring shipping shore power system in real time, electricity consumption
Parameter information, operating status and warning message, real-time transmission to intelligent monitored control module.
In present embodiment, data acquisition module uses the DTGS-800 module of Anydata.Data acquisition module has remote
Function of the number of passes according to acquisition and transmission, built-in TCP/IP communication agreement.
In present embodiment, the power consumption parameter information of acquisition includes voltage and current.
Intelligent monitored control module, power consumption parameter information, the fortune of each electrical equipment for the shipping shore power system to acquisition
Row state and warning message are monitored, and judge whether each electrical equipment works in voltage rating, rated current and specified function
Under rate and whether the operating status of each electrical equipment is normal, if electrical equipment exceeds its voltage rating, rated current or specified
Power or electrical equipment operating status are abnormal, then correspond to equipment to it by PLC controller and carry out on-off control, and will adopt
Electricity consumption information, power consumption parameter information, electrical equipment operating status and the report of each electrical equipment of the shipping shore power system of collection
Alert information is sent to information processing layer by data/address bus.
PLC controller, for being set in electrical equipment beyond its voltage rating, rated current or rated power or electricity consumption
When received shipment row abnormal state, equipment is corresponded to it and carries out on-off control.
In present embodiment, intelligent monitored control module uses PSM-E20C electric supply monitoring module.In intelligent monitored control module
It is integrated with 50/60Hz working line interlock protection, system operation conditions protection, the protection of power supply process control, power-down procedure control
Protection, the protection of system failure stoppage protection, personnel misoperation, rigid line interlock protection, above-mentioned protection may insure that mould can only be monitored
Block acts in time when monitoring abnormal operational conditions and occurring, and over-voltage, over-current phenomenon avoidance is avoided to occur so as to cause system failure.
The movement of above-mentioned protection is controlled by PLC controller.
Control processor, for the computer with human-computer interaction interface, for show acquisition shipping shore power system it is each
Electricity consumption information, power consumption parameter information, electrical equipment operating status and the warning message of a electrical equipment are carried out in operator
Operation out of service or when simultaneously vehicle operates, sends operation signal to DSP and FPGA, when electrical equipment beyond its voltage rating,
When rated current or rated power or electrical equipment operating status exception, operator passes through human-computer interaction interface control PLC
Controller corresponds to equipment to it and carries out on-off control.
In present embodiment, control processor has man-machine interface, system I/O interface and system remote monitoring interface,
Man-machine interface is made of liquid crystal display and key, and system I/O interface is mainly formed by I/O chip system communication chip is isolated,
It is connected with PLC controller, is responsible for controlling system input/output switching amount.
DSP, for calculating and judging whether ship electricity power supply and shore electric power meet simultaneously vehicle requirement, and in ship electricity power supply or bank
When power supply is unsatisfactory for simultaneously vehicle requirement, reduce-speed sign, acceleration signals, boost signal or buck signal are sent to shipping shore power system
Power inverter, until ship electricity power supply and shore electric power meet and vehicle requirement, and calculate the conjunction of ship electricity power supply and shore electric power
Lock phase angle and closing time, the power inverter for sending a control signal to shipping shore power system is completed and vehicle operation.
FPGA realizes modulus for carrying out data/address bus synchronous coding when DSP sends a control signal to power inverter
Signal is synchronous, and carries out normal operating condition and alarm condition collection.
Signal test and conversion module is detected and is converted for the analog signal to data collecting module collected, is passed
It send to DSP and FPGA.
In present embodiment, signal test and conversion module is ADC module.
Data memory module, for the shipboard output electric current of storage vessel bank electricity system, shipboard output voltage, shipboard output
Frequency, net side export electric current, net side input voltage, warning time, fault time.
Shipping shore power system power supply and information are carried out using the managing and control system for being suitable for shipping shore power system power supply and information
Control method, as shown in Figure 3, comprising the following steps:
Step 1: acquired in real time by data acquisition module each electrical equipment of shipping shore power system electricity consumption information,
Power consumption parameter information, electrical equipment operating status and warning message, real-time transmission to intelligent monitored control module.
Step 2: being believed by power consumption parameter of the intelligent monitored control module to each electrical equipment of the shipping shore power system of acquisition
Breath, operating status and warning message are monitored, and judge whether each electrical equipment works in voltage rating, rated current and volume
Determine under power and whether the operating status of each electrical equipment normal, if electrical equipment beyond its voltage rating, rated current or
Rated power or electrical equipment operating status are abnormal, then correspond to equipment to it by PLC controller and carry out on-off control, and
By the electricity consumption information, power consumption parameter information, electrical equipment operating status of each electrical equipment of the shipping shore power system of acquisition
Information processing layer is sent to by data/address bus with warning message.
Step 3: the electricity consumption information of each electrical equipment of the shipping shore power system of control processor display acquisition, electricity consumption
Parameter information, electrical equipment operating status and warning message, when electrical equipment exceeds its voltage rating, rated current or specified function
When rate or electrical equipment operating status exception, operator corresponds to it by human-computer interaction interface control PLC controller and sets
It is standby to carry out on-off control.
Step 4: when operator issues simultaneously vehicle sign on by the human-computer interaction interface of control processor, at control
It manages device and DSP is sent a command to by data/address bus.
Step 5: judging whether ship electricity power supply and shore electric power meet simultaneously vehicle requirement by DSP and FPGA, and in ship electricity electricity
When source or shore electric power are unsatisfactory for simultaneously vehicle requirement, reduce-speed sign, acceleration signals, boost signal or buck signal are sent to ship bank
The power inverter of electric system calculates ship electricity power supply and shore electric power until ship electricity power supply and shore electric power meet and vehicle requirement
Closing phase angle and closing time, send a control signal to shipping shore power system power inverter complete and vehicle operation.
Step 5.1: the voltage of shore electric power, the frequency of shore electric power, the phase angle of shore electric power, ship electricity are calculated by DSP
The voltage of system, the frequency of ship electric system, the phase angle of ship electric system, shore electric power and ship electricity power supply voltage difference, shore electric power
With the difference on the frequency of ship electricity power supply.
Step 5.2: judging whether the voltage of shore electric power and frequency meet the intrinsic configuration of shipping shore power system by DSP
And its fluctuation is no more than setting fluctuation threshold, if so, 5.3 are thened follow the steps, otherwise, return step 4.
In present embodiment, shipping shore power system inherently be configured to 10kV/50Hz, 6.6kV/60Hz, 380V/50Hz,
440V/60Hz.Fluctuation threshold is ± 5%.
Step 5.3: being used based on reactive power compensation algorithm by DSP according to two power inverters of shore electric power
Voltage, frequency and power determine the output voltage amplitude regulated quantity of two power inverters of shore electric power.
Step 5.3.1: it is determined in shore electric power according to voltage, frequency and the power of the two of shore electric power power inverters
Two parallel power inverter output currents:
In present embodiment, shown in the calculation formula of two parallel power inverter output currents such as formula (1):
Wherein,For the output electric current of the first shore electric power power inverter,For the second shore electric power power inverter
Export electric current, Z1=R1+jX1For the equivalent output impedance of the first shore electric power power inverter, R1For the first shore electric power power
The resistance of inverter, X1For the reactance of the first shore electric power power inverter, j is imaginary unit, Z2=R2+jX2For the second bank electricity
The equivalent output impedance of power inverter, R2For the resistance of the second shore electric power power inverter, X2For the second shore electric power
The reactance of power inverter,For load side voltage in shore electric power, U0For for load-side amplitude in shore electric power,For the output voltage of the first shore electric power power inverter, U1For the output of the first shore electric power power inverter
Voltage magnitude,For the output voltage phase of the first shore electric power power inverter,For the second shore electric power function
The output voltage of rate inverter, U2For the output voltage amplitude of the second shore electric power power inverter,For the second shore electric power
The output voltage phase of power inverter.
Due to parameter fine difference caused by the negligible manufacture of the power inverter for same capacity, then the first shore electric power
The output voltage phase of power inverterWith the output voltage phase of the second shore electric power power inverterClose to 0, R is taken1
=R2=Ri, X1=X2=Xi, then obtain formula (2):
Step 5.3.2: the circulation in shore electric power between two power inverters is calculated:
In present embodiment, shown in the circulation such as formula (3) in shore electric power between two power inverters:
It can be obtained as shown in formula (4) according to formula (2):
Therefore can obtain, (1) when in shore electric power two power inverter output voltages only exist difference in magnitude phase may be not present
When potential difference, then the circulation in shore electric power between two power invertersCalculation formula such as formula (5) shown in:
(2) when two power inverter output voltages only exist phase difference difference in magnitude may be not present in shore electric power, then
Circulation in shore electric power between two power invertersCalculation formula such as formula (6) shown in:
Step 5.3.3: calculate in shore electric power between two power inverters because the apparent energy of circulating loss is SH、
Because of the active-power P of circulating lossHWith the reactive power Q because of circulating lossH。
In present embodiment, in shore electric power between two power inverters because circulating loss apparent energy be SH's
Shown in calculation formula such as formula (7):
Wherein, S1For the apparent energy of the first shore electric power power inverter, S2For the second shore electric power power inverter
Apparent energy.
Therefore can obtain, (1) when in shore electric power two power inverter output voltages only exist difference in magnitude phase may be not present
When potential difference, then in shore electric power between two power inverters because circulating loss apparent energy be SHAs shown in formula (8), because
The active-power P of circulating lossHAs shown in formula (9), because of the reactive power Q of circulating lossHAs shown in formula (10):
Wherein, R1=R2=Ri, X1=X2=Xi；
(2) when two power inverter output voltages only exist phase difference difference in magnitude may be not present in shore electric power, then
In shore electric power between two power inverters because circulating loss apparent energy be SHAs shown in formula (11), because of circulating loss
Active-power PHAs shown in formula (12), because of the reactive power Q of circulating lossHAs shown in formula (13):
(3) when in shore electric power two power inverter output voltages not only there is phase difference but also there are when difference in magnitude, then bank
Active-power P in power supply between two power inverters because of circulating lossHNothing as shown in formula (14) and because of circulating loss
Function power QHAs shown in formula (15):
Wherein, Δ U is the voltage amplitude value difference of two power inverters in shore electric power,For two function in shore electric power
The voltage phase difference of rate inverter.
Step 5.3.4: according to step 5.3.3 obtain because circulating loss active-power PHWith it is idle because of circulating loss
Power QHDetermine the voltage amplitude value difference of two power inverters in shore electric powerWith phase difference U.
In present embodiment, the voltage amplitude value difference of two power inverters in determining shore electric powerSuch as formula (16) institute
Show, shown in phase difference U such as formula (17):
In present embodiment, because of resistance R in power inverter output impedanceiMuch smaller than induction reactance Xi, can formula (16) and formula
(17) it can be reduced to shown in formula (18) and formula (19):
Step 5.3.5: determine that two power inverter output voltage amplitudes in the shore electric power after PI is adjusted, which are added, to be adjusted
Measure Δ Ui。
In present embodiment, two power inverter output voltage amplitude regulated quantitys in the shore electric power after PI is adjusted are added
ΔUiAs shown in formula (20):
Wherein, KP, KIFor PI adjustment parameter, AU1=AU2=Δ Ui, Δ U1It is defeated for shore electric power First power inverter
Voltage magnitude regulated quantity out, Δ U2For second power inverter output voltage amplitude regulated quantity of shore electric power, QHiFor bank electricity electricity
For i-th, source power inverter because of the reactive power of circulating loss, i=1,2, s are that Laplace transformation after pi regulator is added.
Step 5.4: passing through the output voltage amplitude regulated quantity of DSP and FPGA regulation power inverter.
Step 5.5: judge whether the difference on the frequency of shore electric power and ship electricity power supply meets simultaneously vehicle requirement by DSP, if so,
Step 5.7 is executed, otherwise, executes step 5.6.
In present embodiment, the difference on the frequency of shore electric power and ship electricity power supply and vehicle require to be that difference on the frequency is maintained at ± 10%
Within.
Step 5.6: judging whether the frequency of ship electricity power supply is greater than the frequency of shore electric power by DSP, if so, passing through DSP
Deceleration pulse is sent to the power inverter of ship electric system with FPGA, return step 5.1 is otherwise, electric to ship by DSP and FPGA
The power inverter of system sends acceleration pulse, return step 5.1.
Step 5.7: judge whether the voltage difference of shore electric power and ship electricity power supply meets simultaneously vehicle requirement by DSP, if so,
Step 5.9 is executed, otherwise, executes step 5.8.
In present embodiment, the voltage difference of shore electric power and ship electricity power supply and vehicle require to be that voltage difference is maintained at ± 10%
Within.
Step 5.8: judging whether the voltage of ship electricity power supply is greater than the frequency of shore electric power by DSP, if so, passing through DSP
Decompression pulse is sent to the power inverter of ship electric system with FPGA, return step 5.1 is otherwise, electric to ship by DSP and FPGA
The power inverter of system sends voltage boosting pulse, return step 5.1.
Step 5.9: the closing phase angle and closing time of ship electricity power supply and shore electric power are calculated by DSP.
Step 5.10: switching signal is sent to the power inverter of ship electric system and the function of bank electricity system by DSP and FPGA
Rate inverter realizes closing operation.
Step 6: by control processor display acquisition shipping shore power system each electrical equipment electricity consumption information,
Power consumption parameter information, electrical equipment operating status and warning message.
Step 7: electric current, shipboard output voltage, ship are exported by the shipboard of data memory module storage vessel bank electricity system
Side output frequency, net side export electric current, net side input voltage, warning time, fault time.
Claims (3)
1. a kind of managing and control system suitable for shipping shore power system power supply and information, which is characterized in that including harbour supervisory layers and
Information processing layer；
The harbour supervisory layers, including data acquisition module, intelligent monitored control module and PLC controller；
The information processing layer, including control processor, DSP, FPGA, signal test and conversion module and data memory module；
The input terminal of the data acquisition module connects each electrical equipment of shipping shore power system, the number by data/address bus
According to acquisition module, intelligent monitored control module, control processor, DSP, FPGA, signal test and conversion module, data memory module and
It is communicated between PLC controller by data/address bus, described DSP, FPGA connect shipping shore power system by data/address bus
Power inverter；
The data acquisition module, the electricity consumption information of each electrical equipment for acquiring shipping shore power system in real time, electricity consumption
Parameter information, operating status and warning message, real-time transmission to intelligent monitored control module；
The intelligent monitored control module, power consumption parameter information, the fortune of each electrical equipment for the shipping shore power system to acquisition
Row state and warning message are monitored, and judge whether each electrical equipment works in voltage rating, rated current and specified function
Under rate and whether the operating status of each electrical equipment is normal, if electrical equipment exceeds its voltage rating, rated current or specified
Power or electrical equipment operating status are abnormal, then correspond to equipment to it by PLC controller and carry out on-off control, and will adopt
Electricity consumption information, power consumption parameter information, electrical equipment operating status and the report of each electrical equipment of the shipping shore power system of collection
Alert information is sent to information processing layer by data/address bus；
The PLC controller, for being set in electrical equipment beyond its voltage rating, rated current or rated power or electricity consumption
When received shipment row abnormal state, equipment is corresponded to it and carries out on-off control；
The control processor, for the computer with human-computer interaction interface, for show acquisition shipping shore power system it is each
Electricity consumption information, power consumption parameter information, electrical equipment operating status and the warning message of a electrical equipment are carried out in operator
Operation out of service or when simultaneously vehicle operates, sends operation signal to DSP and FPGA, when electrical equipment beyond its voltage rating,
When rated current or rated power or electrical equipment operating status exception, operator passes through human-computer interaction interface control PLC
Controller corresponds to equipment to it and carries out on-off control；
The DSP, for calculating and judging whether ship electricity power supply and shore electric power meet simultaneously vehicle requirement, and in ship electricity power supply or bank
When power supply is unsatisfactory for simultaneously vehicle requirement, reduce-speed sign, acceleration signals, boost signal or buck signal are sent to shipping shore power system
Power inverter, until ship electricity power supply and shore electric power meet and vehicle requirement, and calculate the conjunction of ship electricity power supply and shore electric power
Lock phase angle and closing time, the power inverter for sending a control signal to shipping shore power system is completed and vehicle operation；
The FPGA realizes modulus for carrying out data/address bus synchronous coding when DSP sends a control signal to power inverter
Signal is synchronous, and carries out normal operating condition and alarm condition collection；
The signal test and conversion module is detected and is converted for the analog signal to data collecting module collected, is passed
It send to DSP and FPGA；
The data memory module, for the shipboard output electric current of storage vessel bank electricity system, shipboard output voltage, shipboard output
Frequency, net side export electric current, net side input voltage, warning time, fault time.
2. carrying out ship shore electric system suitable for shipping shore power system power supply and the managing and control system of information using described in claim 1
The method of the control for power supply and the information of uniting, which comprises the following steps:
Step 1: acquiring electricity consumption information, the electricity consumption of each electrical equipment of shipping shore power system in real time by data acquisition module
Parameter information, electrical equipment operating status and warning message, real-time transmission to intelligent monitored control module；
Step 2: power consumption parameter information, fortune by intelligent monitored control module to each electrical equipment of the shipping shore power system of acquisition
Row state and warning message are monitored, and judge whether each electrical equipment works in voltage rating, rated current and specified function
Under rate and whether the operating status of each electrical equipment is normal, if electrical equipment exceeds its voltage rating, rated current or specified
Power or electrical equipment operating status are abnormal, then correspond to equipment to it by PLC controller and carry out on-off control, and will adopt
Electricity consumption information, power consumption parameter information, electrical equipment operating status and the report of each electrical equipment of the shipping shore power system of collection
Alert information is sent to information processing layer by data/address bus；
Step 3: electricity consumption information, the power consumption parameter of each electrical equipment of the shipping shore power system of control processor display acquisition
Information, electrical equipment operating status and warning message, when electrical equipment exceed its voltage rating, rated current or rated power,
Or when electrical equipment operating status exception, operator corresponds to equipment to it by human-computer interaction interface control PLC controller
Carry out on-off control；
Step 4: when operator issues simultaneously vehicle sign on by the human-computer interaction interface of control processor, control processor
DSP is sent a command to by data/address bus；
Step 5: ship electricity power supply is judged by DSP and FPGA and whether shore electric power meets and vehicle requirement, and in ship electricity power supply or
When shore electric power is unsatisfactory for simultaneously vehicle requirement, reduce-speed sign, acceleration signals, boost signal or buck signal are sent to ship shore electric system
The power inverter of system calculates the conjunction of ship electricity power supply and shore electric power until ship electricity power supply and shore electric power meet and vehicle requirement
Lock phase angle and closing time, the power inverter for sending a control signal to shipping shore power system is completed and vehicle operation；
Step 5.1: the voltage of shore electric power, the frequency of shore electric power, the phase angle of shore electric power, ship electric system are calculated by DSP
Voltage, the frequency of ship electric system, the phase angle of ship electric system, shore electric power and ship electricity power supply voltage difference, shore electric power and ship
The difference on the frequency of power supply；
Step 5.2: by DSP judge the voltage of shore electric power and frequency whether meet shipping shore power system it is intrinsic configuration and its
Fluctuation is no more than setting fluctuation threshold, if so, 5.3 are thened follow the steps, otherwise, return step 4；
Step 5.3: being used based on reactive power compensation algorithm by DSP according to the electricity of two power inverters of shore electric power
Pressure, frequency and power determine the output voltage amplitude regulated quantity of two power inverters of shore electric power；
Step 5.4: passing through the output voltage amplitude regulated quantity of DSP and FPGA regulation power inverter；
Step 5.5: judging whether the difference on the frequency of shore electric power and ship electricity power supply meets simultaneously vehicle requirement by DSP, if so, executing
Step 5.7, otherwise, step 5.6 is executed；
Step 5.6: judge whether the frequency of ship electricity power supply is greater than the frequency of shore electric power by DSP, if so, by DSP and
FPGA sends deceleration pulse, return step 5.1, otherwise, by DSP and FPGA to ship electricity system to the power inverter of ship electric system
The power inverter of system sends acceleration pulse, return step 5.1；
Step 5.7: judging whether the voltage difference of shore electric power and ship electricity power supply meets simultaneously vehicle requirement by DSP, if so, executing
Step 5.9, otherwise, step 5.8 is executed；
Step 5.8: judge whether the voltage of ship electricity power supply is greater than the frequency of shore electric power by DSP, if so, by DSP and
FPGA sends decompression pulse, return step 5.1, otherwise, by DSP and FPGA to ship electricity system to the power inverter of ship electric system
The power inverter of system sends voltage boosting pulse, return step 5.1；
Step 5.9: the closing phase angle and closing time of ship electricity power supply and shore electric power are calculated by DSP；
Step 5.10: it is inverse to the power inverter of ship electric system and the power of bank electricity system that switching signal being sent by DSP and FPGA
Become device and realizes closing operation；
Step 6: passing through the electricity consumption information of each electrical equipment of the shipping shore power system of control processor display acquisition, electricity consumption
Parameter information, electrical equipment operating status and warning message；
Step 7: it is defeated that electric current, shipboard output voltage, shipboard being exported by the shipboard of data memory module storage vessel bank electricity system
Frequency, net side export electric current, net side input voltage, warning time, fault time out.
3. the method for the control of shipping shore power system power supply according to claim 2 and information, which is characterized in that the step
Rapid 5.3 the following steps are included:
Step 5.3.1: two are determined in shore electric power according to voltage, frequency and the power of the two of shore electric power power inverters
Parallel power inverter output current:
Wherein,For the output electric current of the first shore electric power power inverter,For the output of the second shore electric power power inverter
Electric current, Z1=R1+jX1For the equivalent output impedance of the first shore electric power power inverter, R1For the first shore electric power power inverting
The resistance of device, X1For the reactance of the first shore electric power power inverter, j is imaginary unit, Z2=R2+jX2For the second shore electric power
The equivalent output impedance of power inverter, R2For the resistance of the second shore electric power power inverter, X2For the second shore electric power power
The reactance of inverter,For load side voltage in shore electric power, U0For load-side amplitude in shore electric power,For the output voltage of the first shore electric power power inverter, U1For the output of the first shore electric power power inverter
Voltage magnitude,For the output voltage phase of the first shore electric power power inverter,For the second shore electric power function
The output voltage of rate inverter, U2For the output voltage amplitude of the second shore electric power power inverter,For the second shore electric power
The output voltage phase of power inverter；
Step 5.3.2: the circulation in shore electric power between two power inverters is calculated:
(1) when two power inverter output voltages only exist difference in magnitude phase difference may be not present in shore electric power, then bank electricity
Circulation in power supply between two power invertersCalculation formula it is as follows:
(2) when two power inverter output voltages only exist phase difference difference in magnitude may be not present in shore electric power, then bank electricity
Circulation in power supply between two power invertersCalculation formula it is as follows:
Step 5.3.3: calculate in shore electric power between two power inverters because the apparent energy of circulating loss is SH, because of ring
Flow the active-power P H of loss and the reactive power Q because of circulating lossH:
(1) when two power inverter output voltages only exist difference in magnitude phase difference may be not present in shore electric power, then bank electricity
In power supply between two power inverters because circulating loss apparent energy be SH, because of the active-power P of circulating lossHAnd because
The reactive power Q of circulating lossHCalculation formula it is as follows:
Wherein, R1=R2=Ri, X1=X2=Xi；
(2) when two power inverter output voltages only exist phase difference difference in magnitude may be not present in shore electric power, then bank electricity
In power supply between two power inverters because circulating loss apparent energy be SH, because of the active-power P of circulating lossHAnd because
The reactive power Q of circulating lossHCalculation formula it is as follows:
(3) when in shore electric power two power inverter output voltages not only there is phase difference but also there are when difference in magnitude, then bank electricity electricity
Active-power P in source between two power inverters because of circulating lossHWith the reactive power Q because of circulating lossHCalculation formula
It is as follows:
Wherein, Δ U is the voltage amplitude value difference of two power inverters in shore electric power,For two power invertings in shore electric power
The voltage phase difference of device；
Step 5.3.4: according to step 5.3.3 obtain because circulating loss active-power PHWith the reactive power because of circulating loss
QHDetermine the voltage amplitude value difference of two power inverters in shore electric powerWith phase difference U:
Step 5.3.5: it determines and two power inverter output voltage amplitude regulated quantity Δ U in the shore electric power after PI is adjusted is addedi:
Wherein, Kp, KIFor PI adjustment parameter, Δ U1=Δ U2=Δ Ui, Δ U1For the output of shore electric power First power inverter
Voltage magnitude regulated quantity, Δ U2For second power inverter output voltage amplitude regulated quantity of shore electric power, QHiFor shore electric power
For i-th power inverter because of the reactive power of circulating loss, i=1,2, s are that Laplace transformation after pi regulator is added.
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| CN107623379B (en) * | 2017-09-27 | 2023-06-30 | 广州航海学院 | Harbor ship shore power connection system and method based on voltage difference envelope curve |
| CN107944689B (en) * | 2017-11-19 | 2021-06-18 | 国网浙江省电力公司电力科学研究院 | Shore power operation economy analysis method |
| CN108493934A (en) * | 2018-04-16 | 2018-09-04 | 苏州英威腾电力电子有限公司 | A kind of shore electric power system and its shore electric power control method and device |
| CN111026011A (en) * | 2019-11-19 | 2020-04-17 | 天津市中天新科技股份有限公司 | Shore power on-line monitoring management system and method |
| CN110943449A (en) * | 2019-12-09 | 2020-03-31 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Centralized shore power station level system access method and system |
| CN111884344A (en) * | 2020-08-10 | 2020-11-03 | 合肥三物信息技术有限公司 | Shore power box control power supply on-off device |
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