CN110829605A - Power management system for power grid planning - Google Patents

Power management system for power grid planning Download PDF

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Publication number
CN110829605A
CN110829605A CN201911241171.2A CN201911241171A CN110829605A CN 110829605 A CN110829605 A CN 110829605A CN 201911241171 A CN201911241171 A CN 201911241171A CN 110829605 A CN110829605 A CN 110829605A
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CN
China
Prior art keywords
power
power supply
module
monitoring
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911241171.2A
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Chinese (zh)
Inventor
周炳华
姚海燕
徐辉
缪月森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yuhang District Power Supply Co Ltd Hangzhou City Zhejiang
Yuhang Branch Of Hangzhou Electric Power Design Institute Co Ltd
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
Yuhang District Power Supply Co Ltd Hangzhou City Zhejiang
Yuhang Branch Of Hangzhou Electric Power Design Institute Co Ltd
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yuhang District Power Supply Co Ltd Hangzhou City Zhejiang, Yuhang Branch Of Hangzhou Electric Power Design Institute Co Ltd, Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical Yuhang District Power Supply Co Ltd Hangzhou City Zhejiang
Priority to CN201911241171.2A priority Critical patent/CN110829605A/en
Publication of CN110829605A publication Critical patent/CN110829605A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40Testing power supplies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/7853
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The application discloses a power management system for power grid planning, which comprises a power supply for accumulating electric energy, a power transformation assembly for performing lifting adjustment on output voltage of the power supply, and a power distribution network for connecting the power transformation assembly with a load; this application adopts power supply monitoring module and distribution network monitoring module to come the running state of real-time supervision power supply, adopts the form of cloud calculation to acquire the best distribution scheme, adopts the form that power supply centralized adjustment acquires power supply's running state, and judges whether it is in the best state, and carries out the equilibrium to each power and adjusts based on this, thereby lets the power of each different states can be in best operating condition, thereby effectively improved the stability of distribution. Obviously, for multiple power supply ports, in this way, the potential risk of the power management system in the operation process can be effectively reduced, thereby further improving the safety of the power management system in the operation process.

Description

Power management system for power grid planning
Technical Field
The invention relates to the technical field of power distribution, in particular to a power management system for power grid planning.
Background
Most of the existing power management systems directly convert power voltage into load voltage, and although this method is convenient, the stability and safety of the power management system are often not very good. For the power management system, if part of the power supplies in the power management system are in an abnormal operation mode, for example: and part of power supplies are directly disconnected, run higher than the rated power or run lower than the rated power, and under the condition, the power supply management system has great potential safety hazards. At present, no effective solution exists for the problem.
Therefore, how to further improve the safety of the power management system in the operation process is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a power management system for power grid planning, so as to further improve the safety of the power management system during the operation process. The specific scheme is as follows:
a power management system for grid planning, comprising: the power distribution system comprises a power supply for accumulating electric energy, a power transformation assembly for performing lifting adjustment on output voltage of the power supply, and a power distribution network for connecting the power transformation assembly with a load;
the power supply, the power transformation assembly and the power distribution network are respectively provided with a power supply monitoring module, a power transformation monitoring module and a power grid monitoring module; the power supply monitoring module is used for monitoring the running state of the power supply and adjusting the working state of the power supply; the transformer substation monitoring module is used for monitoring the incoming line voltage and the outgoing line voltage of the transformer substation equipment; the power grid monitoring module is used for monitoring the load of the power transmission network and the running state of each branch distribution box;
the transformer substation monitoring module comprises an input voltage monitoring assembly and an output voltage monitoring assembly, wherein the input voltage monitoring assembly and the output voltage monitoring assembly are respectively composed of voltage sensors arranged on an inlet bus and an outlet bus of a transformer substation; the voltage sensor is connected with the management center in a wireless communication mode through the sensor concentrator;
the power grid monitoring module comprises a power transmission line monitoring assembly arranged on a power transmission line, a distribution box operation monitoring assembly arranged on a tapping distribution box and a distribution box incoming and outgoing line power transmission monitoring assembly;
the power transmission line monitoring assembly comprises a voltage monitoring sensor and a current monitoring sensor which are arranged on a power transmission network; the power distribution box operation monitoring assembly comprises an environment monitoring module arranged in the power distribution box, and a power distribution box inlet and outlet wire output monitoring assembly is composed of voltage and current sensors arranged on an inlet and outlet bus of the power distribution box; each sensor of the output line monitoring assembly, the distribution box operation monitoring assembly and the distribution box incoming and outgoing line power transmission monitoring assembly is connected with the management center in a wireless communication mode through a sensor concentrator;
the power supply monitoring module comprises a power supply data acquisition module, a voltage reference storage module, a logic judgment module, a power supply control module and a single power supply balance output module;
the power supply data acquisition module is used for acquiring voltage, current and temperature signals of a power supply assembly, and transmitting the acquired data signals to the logic judgment module;
the voltage reference storage module is used for storing reference voltage information of the power supply, wherein the reference voltage information comprises a voltage reference upper limit and a voltage reference lower limit of the power supply; the voltage reference storage module and the logic judgment module have a communication connection relation;
the logic judgment module is used for comparing the signal data of the power supply data acquisition module with the reference voltage information stored in the voltage reference storage module and transmitting a comparison result to the cloud computing module in a network transmission mode, and the cloud computing module is integrated in the management center;
the cloud computing module is used for adaptively adjusting the power supply through the power supply control module in a remote control mode, and the power supply control module is used for determining the charge and discharge amount and the corresponding charge and discharge time required by different power supply monomers according to the transfer efficiency of the charge amount of each power supply; the output end of the power supply is provided with a single power supply balanced output module, and the single power supply balanced output module and the power supply control module have a communication connection relation.
Preferably, the environment monitoring module comprises a temperature sensor, a smoke sensor and a humidity sensor.
Preferably, the single power supply balanced output module comprises a power supply voltage difference compensation system.
Preferably, the power supply comprises a wind power station, a water power station, a photovoltaic power station, a thermal power station and an emergency vehicle-mounted lithium battery power station.
Therefore, according to the power management system for power grid planning provided by the invention, the power supply monitoring module and the power grid monitoring module can be used for acquiring the running state of the power supply, the optimal power distribution scheme is acquired in a cloud computing mode, the running state of each power supply is acquired in a power supply centralized adjustment mode, whether the power supply is in the optimal working state is judged, and the power supplies in different states can be in the optimal working state by performing balanced adjustment on the power supplies based on the optimal working state, so that the power distribution stability is effectively improved. Obviously, for multiple power supply ports, in this way, the potential risk of the power management system in the operation process can be effectively reduced, thereby further improving the safety of the power management system in the operation process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a power management system for power grid planning according to an embodiment of the present invention;
fig. 2 is a structural diagram of an environmental monitoring module according to an embodiment of the present invention;
fig. 3 is a structural diagram of a power supply provided in an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a structural diagram of a power management system for power grid planning according to an embodiment of the present invention; the power management system includes: the power supply system comprises a power supply 11 for accumulating electric energy, a power transformation assembly 12 for performing lifting adjustment on the output voltage of the power supply 11, and a power distribution network 13 for connecting the power transformation assembly 12 with a load;
the power supply 11, the power transformation assembly 12 and the power distribution network 13 are respectively provided with a power supply monitoring module 21, a power transformation monitoring module 22 and a power grid monitoring module 23; the power supply monitoring module 21 is configured to monitor an operating state of the power supply 11, and adjust a working state of the power supply 11; the power transformation monitoring module 22 is used for monitoring the incoming line voltage and the outgoing line voltage of the substation equipment; the power grid monitoring module 23 is configured to monitor a power transmission grid load and an operation state of each branch distribution box;
the power transformation monitoring module 22 comprises an input voltage monitoring component 201 and an output voltage monitoring component 202, wherein the input voltage monitoring component 201 and the output voltage monitoring component 202 are respectively composed of voltage sensors installed on an inlet bus and an outlet bus of a transformer substation; the voltage sensor is connected with the management center in a wireless communication mode through the sensor concentrator;
the power grid monitoring module 23 comprises a power transmission line monitoring assembly 301 installed on a power transmission line, a distribution box operation monitoring assembly 302 installed on a tapping distribution box, and a distribution box in-out line power transmission monitoring assembly 303;
the power transmission line monitoring assembly 301 comprises a voltage monitoring sensor and a current monitoring sensor arranged on the power transmission network; the power distribution box operation monitoring assembly 302 comprises an environment monitoring module 41 arranged in the power distribution box, and a power distribution box wire inlet and outlet output monitoring assembly is composed of a voltage and current sensor arranged on a wire inlet and outlet bus of a distribution box; each sensor of the output line monitoring assembly, the distribution box operation monitoring assembly 302 and the distribution box incoming and outgoing line power transmission monitoring assembly is connected with the management center in a sensor concentrator and wireless communication mode;
the power monitoring module 21 comprises a power data acquisition module 101, a voltage reference storage module 102, a logic judgment module 103, a power control module 104 and a single power balance output module 105;
the power data acquisition module 101 is configured to acquire voltage, current, and temperature signals of a power supply component, and the power data acquisition module 101 transmits the acquired data signals to the logic determination module 103;
the voltage reference storage module 102 is configured to store reference voltage information of the power supply 11, where the reference voltage information includes an upper voltage reference limit and a lower voltage reference limit of the power supply 11; the voltage reference storage module 102 and the logic judgment module 103 have a communication connection relationship;
the logic judgment module 103 is configured to compare the signal data of the power data acquisition module 101 with the reference voltage information stored in the voltage reference storage module 102, and transmit a comparison result to the cloud computing module 31 in a network transmission manner, where the cloud computing module 31 is integrally arranged in a management center;
the cloud computing module 31 performs adaptive adjustment on the power supply 11 through the power supply control module 104 in a remote control manner, and the power supply control module 104 determines charge and discharge amounts and corresponding charge and discharge time required by different power supply units according to transfer efficiency of each power supply charge amount; the output end of the power supply 11 is provided with a single power supply balanced output module 105, and the single power supply balanced output module 105 and the power supply control module 104 have a communication connection relationship.
It should be noted that, in this embodiment, the actual monitoring indexes of the power transmission line monitoring component 301 further include voltage deviation, frequency deviation, three-phase imbalance, harmonic voltage distortion, and indexes of content of each subharmonic, and the reactive compensation and the switching of the harmonic suppression device are performed based on the indexes to improve the power quality.
Therefore, according to the power management system for power grid planning provided by the embodiment, the power monitoring module and the power grid monitoring module can be used for acquiring the running state of the power supply, the optimal power distribution scheme is acquired in a cloud computing mode, the running state of each power supply is acquired in a power supply centralized adjustment mode, whether the power supply is in the optimal working state is judged, and the power supplies in different states can be in the optimal working state based on the optimal working state and the balance adjustment of the power supplies, so that the power supplies in different states can be in the optimal working state, and the power distribution stability is effectively improved. Obviously, for multiple power supply ports, in this way, the potential risk of the power management system in the operation process can be effectively reduced, thereby further improving the safety of the power management system in the operation process.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, and fig. 2 is a structural diagram of the environment monitoring module 41 according to the embodiment of the present invention. Specifically, the environment monitoring module 41 includes a temperature sensor 401, a smoke sensor 402, and a humidity sensor 403.
In this embodiment, the environmental monitoring module 41 can be set as the temperature sensor 401, the smoke sensor 402 and the humidity sensor 403, that is, the environmental monitoring module 41 is utilized to monitor the temperature and humidity information and the fire information inside the distribution box in real time.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, and specifically, the single power supply balanced output module 105 includes a power supply voltage difference compensation system.
Specifically, in practical applications, the single power supply equalization output module 105 may be set as a power supply equalization output module composed of a power supply voltage difference compensation system, that is, the power supply voltage difference compensation system is used to adjust the electric quantity in the single power supply equalization output module 105 in real time.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 3, and fig. 3 is a structural diagram of the power supply 11 according to the embodiment of the present invention. Specifically, the power supply 11 includes a wind power station 111, a hydroelectric power station 112, a photovoltaic power station 113, a thermal power station 114, and an emergency vehicle-mounted lithium battery power station 115.
In the present embodiment, a specific implementation manner of the power supply 11 is provided, that is, in practical application, the power supply 11 may be set as a power supply system composed of the wind power station 111, the hydroelectric power station 112, the photovoltaic power station 113, the thermal power station 114, and the emergency vehicle-mounted lithium battery power station 115.
Obviously, the technical solution provided by this embodiment can make the setting mode of the power supply 11 more flexible and various.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The power management system for power grid planning provided by the invention is described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the invention, and the description of the above embodiment is only used to help understand the method of the invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (4)

1. A power management system for grid planning, comprising: the power distribution system comprises a power supply for accumulating electric energy, a power transformation assembly for performing lifting adjustment on output voltage of the power supply, and a power distribution network for connecting the power transformation assembly with a load;
the power supply, the power transformation assembly and the power distribution network are respectively provided with a power supply monitoring module, a power transformation monitoring module and a power grid monitoring module; the power supply monitoring module is used for monitoring the running state of the power supply and adjusting the working state of the power supply; the transformer substation monitoring module is used for monitoring the incoming line voltage and the outgoing line voltage of the transformer substation equipment; the power grid monitoring module is used for monitoring the load of the power transmission network and the running state of each branch distribution box;
the transformer substation monitoring module comprises an input voltage monitoring assembly and an output voltage monitoring assembly, wherein the input voltage monitoring assembly and the output voltage monitoring assembly are respectively composed of voltage sensors arranged on an inlet bus and an outlet bus of a transformer substation; the voltage sensor is connected with the management center in a wireless communication mode through the sensor concentrator;
the power grid monitoring module comprises a power transmission line monitoring assembly arranged on a power transmission line, a distribution box operation monitoring assembly arranged on a tapping distribution box and a distribution box incoming and outgoing line power transmission monitoring assembly;
the power transmission line monitoring assembly comprises a voltage monitoring sensor and a current monitoring sensor which are arranged on a power transmission network; the power distribution box operation monitoring assembly comprises an environment monitoring module arranged in the power distribution box, and a power distribution box inlet and outlet wire output monitoring assembly is composed of voltage and current sensors arranged on an inlet and outlet bus of the power distribution box; each sensor of the output line monitoring assembly, the distribution box operation monitoring assembly and the distribution box incoming and outgoing line power transmission monitoring assembly is connected with the management center in a wireless communication mode through a sensor concentrator;
the power supply monitoring module comprises a power supply data acquisition module, a voltage reference storage module, a logic judgment module, a power supply control module and a single power supply balance output module;
the power supply data acquisition module is used for acquiring voltage, current and temperature signals of a power supply assembly, and transmitting the acquired data signals to the logic judgment module;
the voltage reference storage module is used for storing reference voltage information of the power supply, wherein the reference voltage information comprises a voltage reference upper limit and a voltage reference lower limit of the power supply; the voltage reference storage module and the logic judgment module have a communication connection relation;
the logic judgment module is used for comparing the signal data of the power supply data acquisition module with the reference voltage information stored in the voltage reference storage module and transmitting a comparison result to the cloud computing module in a network transmission mode, and the cloud computing module is integrated in the management center;
the cloud computing module is used for adaptively adjusting the power supply through the power supply control module in a remote control mode, and the power supply control module is used for determining the charge and discharge amount and the corresponding charge and discharge time required by different power supply monomers according to the transfer efficiency of the charge amount of each power supply; the output end of the power supply is provided with a single power supply balanced output module, and the single power supply balanced output module and the power supply control module have a communication connection relation.
2. The power management system of claim 1, wherein the environmental monitoring module comprises a temperature sensor, a smoke sensor, and a humidity sensor.
3. The power management system of claim 1, wherein the single supply balanced output module comprises a supply voltage differential compensation system.
4. The power management system of claim 1, wherein the power supply comprises a wind power plant, a hydro power plant, a photovoltaic power plant, a thermal power plant, and an emergency on-board lithium battery power plant.
CN201911241171.2A 2019-12-06 2019-12-06 Power management system for power grid planning Pending CN110829605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911241171.2A CN110829605A (en) 2019-12-06 2019-12-06 Power management system for power grid planning

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Application Number Priority Date Filing Date Title
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