Research and judgment method for power plant operation state based on regulation cloud

A technology for operating status and power plants, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve problems that are prone to misjudgment, missed judgment, misjudgment, etc., to improve the accuracy of research and judgment, improve the accuracy of research and judgment, and improve The effect of accuracy

Active Publication Date: 2021-04-27
STATE GRID ANHUI ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for researching and judging the operating state of a power plant based on the regulation and control cloud, to solve the problems of misjudgment, missed judgment, and misjudgment that are prone to occur in traditional research and judgment methods, and to creatively propose the source-end instantaneous Check the rationality of energy exchange; check the power consistency of the busbar; check the effectiveness of the electric energy at the grid-connected point of the transformer, integrate and control the comprehensive data of grid operation from multiple systems, realize the association of business data, and greatly improve Judgment accuracy

Method used

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  • Research and judgment method for power plant operation state based on regulation cloud
  • Research and judgment method for power plant operation state based on regulation cloud
  • Research and judgment method for power plant operation state based on regulation cloud

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Such as figure 1As shown, a method for researching and judging the operating state of a power plant based on the control cloud includes the following steps:

[0058] Step1: Collect the type of power plant, collect the remote signal values ​​sent by the power plant to the municipal and provincial power company buses, transformers, generators, AC line endpoints, circuit breakers and inverters, and the location of the power plant. Electricity data from municipal and provincial power companies;

[0059] Step2: Based on the type of power plant and the city-level and provincial-level remote signal values ​​of generators, circuit breakers, transformers and inverters, the rationality of instantaneous energy exchange at the source is verified for the generators;

[0060] Step3: Based on the municipal-level and provincial-level remote signaling values ​​of the bus, perform power consistency verification on the bus;

[0061] Step4: Based on the type of power plant, the municipal...

Embodiment 2

[0062] Embodiment 2: The difference between embodiment 2 and embodiment 1 is only that: the rationality verification of the source end instantaneous energy exchange of the generator is specifically explained.

[0063] Specifically, Step2 includes the following steps:

[0064] Step2.1: Determine whether there is a circuit breaker between the generator and the low-voltage side of the transformer winding;

[0065] Step2.2: Determine whether the power plant is a thermal power plant, a photovoltaic power plant or other power plants;

[0066] Step2.3: Through the relationship between the active power remote signal value Pcl and the generator rated power Pe, judge whether the power plant is operating normally:

[0067] The discriminant formula for thermal power plants and other power plants is:

[0068] Pcl<μPe (1)

[0069] The discriminant formula for photovoltaic power plants in the no-light interval T is:

[0070] Pcl>θ (2)

[0071] Among them, Pcl is the active power remote ...

Embodiment 3

[0075] Embodiment 3: The difference between Embodiment 3 and Embodiment 1 is only that: the power consistency check of the bus is described in detail.

[0076] Specifically, Step3 includes the following steps:

[0077] Step3.1: Based on the relationship between the machine terminal voltage Ucl and the rated voltage Ue, set the bus voltage limit check value:

[0078]

[0079] Among them, Uc is the bus voltage limit check value, Ucl is the terminal voltage telemetry data sent by the power supply company to the control cloud, Ue is the rated voltage of the bus connected to the generator, and α and β are constants;

[0080] Step3.2: Based on the current Icl, active power Pcl, reactive power Qcl and machine terminal voltage Ucl, set the check value S of the reasonable operating state of the bus gcl :

[0081]

[0082] Among them, S gcl is the check value of the reasonable operation status of the bus, Qcl is the remote signal value of the reactive power sent to the control ...

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Abstract

The invention discloses a research and judgment method for the operation state of a power plant based on regulation and control cloud and belongs to the technical field of power transfer automation. The method comprises the following steps of step 1, collecting the type of the power plant, and respectively collecting remote signaling values uploaded to municipal and provincial power company equipment by the power plant in different periods, electric quantity data of city-level and provincial-level electric power companies of the place where the power plant is located being obtained; step 2, performing source end instantaneous energy exchange rationality verification on the generator; step 3, performing power consistency verification on the bus; and step 4, carrying out grid-connected point electric energy validity verification on the transformer. According to the method, problems of misjudgment, missed judgment and misjudgment easily occurring in a traditional research and judgment mode are solved, and source end instantaneous energy exchange rationality verification is creatively proposed for the generator; power consistency verification is conducted on the bus; grid-connected point electric energy validity verification is carried out on the transformer, power grid operation comprehensive data from multiple systems are integrated and controlled, association of service data is achieved, and judgment accuracy is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of electric power mobilization automation, and in particular relates to a method for researching and judging the operating state of a power plant based on a control cloud. Background technique [0002] The existing dispatching system judges the data quality by obtaining data from a single dispatching master station system, or by setting electrical parameter thresholds. The problems caused by this method are: [0003] 1. When the data sent by the power plant does not exceed the set threshold and the data transmission error occurs, misjudgment or missed judgment occurs. [0004] 2. The real-time data of the new energy substation may be inconsistent with the power generation and the operating status of the generator set, such as data jumps, photovoltaic power plants generating more than 1 MW at night, etc., which will lead to misjudgments in the traditional research and judgment methods. [0005] 3. Using the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H02J3/38
CPCH02J13/00002H02J13/00034H02J3/381H02J2300/24Y04S10/12Y02E40/70Y02A30/60Y02E10/56
Inventor 汪伟章昊李端超马金辉王松梁肖陈伟王璨李燚喆
Owner STATE GRID ANHUI ELECTRIC POWER CO LTD
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