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Energy management combined control strategy of user-side battery energy storage power station

An energy storage power station and battery energy storage technology, applied in the direction of AC network load balancing, etc., can solve problems such as single operation strategy, regardless of multiple strategies, and affect the safe and stable operation of energy storage power stations, so as to ensure profitability and continuous and stable operation , wide range of applications, simple and flexible configuration

Active Publication Date: 2019-02-01
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the constraints of the capacity of the energy storage system and its own operating characteristics, and the interactive control methods and operating constraints between the energy storage power station and the distribution network in different application scenarios, the current energy management control method cannot meet the user-side energy storage requirements. The multi-scenario operation requirements of the power station cannot realize the coordination and cooperation between the multi-scenario operation control strategies, which affects the safe and stable operation of the entire user-side energy storage power station
[0003] During the grid-connected operation of the user-side energy storage power station, the operation function requirements of the energy storage power station are different in different application scenarios, and the operation function requirements are also different in different time periods of the day. If the energy management system of the energy storage power station only integrates a single operation strategy Or do not consider the coordination between multiple strategies, which will reduce the operating efficiency of the energy storage power station

Method used

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  • Energy management combined control strategy of user-side battery energy storage power station
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  • Energy management combined control strategy of user-side battery energy storage power station

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Embodiment 1

[0047] This embodiment provides an energy management combined control strategy for a user-side battery energy storage power station, which includes:

[0048] In the energy management system of the energy storage power station, configure the input of the operation strategy and the parameters required by the operation strategy. The operation strategy includes the peak-shaving and valley-filling plan curve strategy, load tracking strategy, demand response auxiliary service strategy, and demand control strategy and the reverse power protection strategy, the peak-shaving and valley-filling plan curve strategy and the load following strategy are the main operation strategies, and the demand response auxiliary service strategy, demand control strategy and reverse power protection strategy are the auxiliary operation strategies;

[0049] Sampling to obtain the tie line power value P at the grid-connected point t And the SOC value of the battery pack under each energy storage converter...

Embodiment 2

[0053] This embodiment provides an energy management combination control strategy for a user-side battery energy storage power station. The following steps are performed during the actual operation of the energy storage power station:

[0054] Step (1): Taking an energy storage power station with multiple power storage converters (PCS) at a single grid-connected point as an example, firstly configure whether the operation strategy is input or not and the parameters required by the strategy in the energy management system of the energy storage power station. Taking the case where all strategies are invested as an example, the main strategies include: 1) peak-shaving and valley-filling plan curve strategy, the peak-shaving and valley-filling plan curve configures the planned power curve according to the local peak-valley electricity price information, assuming that the peak-valley time-of-use electricity price is equal, The discharge power at peak time is P Dpeak , the charging ...

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Abstract

The invention discloses an energy management combined control strategy of a user-side battery energy storage power station, and solves the problem that a present user-side energy storage power stationis single in energy management method and hard to satisfy requirements of different application scenes. A collected real-time operation data information decision is used to determine a present application control mode, the charging / discharging power of different energy-storage converters is calculated according to the coordinated cooperation logics among different control strategies and the SOC value of a battery pack of the energy-storage power station, and problems of coordinated cooperation among the different operation control strategies are solved. The control strategy of the invention is characterized in that safe, stable and continuous operation of the energy storage system is ensured, the application range is wide, applications can be configured flexibly in different scenes, and the strategy is not limited by the capacity of the energy-storage power station.

Description

technical field [0001] The invention belongs to the technical field of power grid control, and in particular relates to an energy management combination control strategy of a user-side battery energy storage power station, solving the coordination and cooperation between energy storage energy management and control strategies in multiple application scenarios, and ensuring the safety and stability of the energy storage system continue to operate. Background technique [0002] In recent years, energy storage technology represented by electrochemical batteries has developed rapidly, and its large-scale application in power systems is increasing rapidly. By the end of 2017, the cumulative scale of electrochemical energy storage in operation in China was 389.8MW. The cumulative installed capacity will reach 1.78GW by the end of the year. With the gradual establishment of the business model of China's energy storage projects, relevant policies actively encourage various entities...

Claims

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Application Information

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IPC IPC(8): H02J3/32
CPCH02J3/32
Inventor 林达赵波张雪松李志浩章雷其汪湘晋
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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