Energy storage power station monitoring system

Abstract

The utility model discloses an energy storage power station monitoring system, which comprises station control layer equipment and energy storage unit equipment, the station control layer equipment comprises a station control layer control switch, an A network gigabit switch, a B network gigabit switch, an A network gigabit convergence switch, a B network gigabit convergence switch, an A network EMS monitoring server, a B network EMS monitoring server, an operation table A, an operation table B, a data communication gateway machine and a PMS coordination controller; the energy storage unit equipment comprises a plurality of BMS battery management systems, a plurality of PCS converters, an A network monitoring switch, a B network monitoring switch and an energy storage end control switch. According to the utility model, monitoring data is divided into two sets of networks A and B, and data of the two sets of networks can be mutually backed up, so that data loss caused by transmission equipment faults can be avoided; and meanwhile, whether the equipment breaks down or not can be detected by comparing data transmitted by the two networks, so that the operation stability of the energy storage power station can be greatly improved.

Description

Technical Field

[0001] The utility model relates to an energy storage power station monitoring system. Background Art

[0002] When building the communication and control network architecture of the existing energy storage power station system, a single data network and control network are generally used, and the data network and the control network are integrated together. This type of network communication architecture is relatively weak and fragile. Once a network failure occurs, even the backup redundancy plan is not considered, which will have a great impact on the stable operation of the energy storage power station. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a storage power station monitoring system which divides monitoring data into two networks, A and B, for transmission and storage. The two sets of network data can back up each other, thereby avoiding data loss due to transmission equipment failure; at the same time, the system can also detect whether a device fails by comparing the data transmitted by the two networks.

[0004] The purpose of the utility model is achieved through the following technical solutions: a monitoring system for an energy storage power station, including station control layer equipment and energy storage unit equipment, the station control layer equipment includes a station control layer control switch, a network A gigabit switch, a network B gigabit switch, a network A gigabit aggregation switch, a network B gigabit aggregation switch, a network A EMS monitoring server, a network B EMS monitoring server, an operation console A, an operation console B, a data communication gateway and a PMS coordination controller; the energy storage unit equipment includes a plurality of BMS battery management systems, a plurality of PCS converters, a network A monitoring switch, a network B monitoring switch and an energy storage end control switch;

[0005] The BMS battery management system is connected to the PCS converter via the Modbus TCP network. The BMS battery management system is connected to the A network monitoring switch and the B network monitoring switch via the IEC62850 network. The PCS converter is connected to the A network monitoring switch and the B network monitoring switch via the IEC62850 network. The PCS converter is connected to the energy storage end control switch via the IEC104 network.

[0006] The monitoring switch of network A, the monitoring switch of network B and the control switch of energy storage end are respectively connected to the Gigabit aggregation switch of network A, the Gigabit aggregation switch of network B and the control switch of station control layer through optical cables; the control switch of station control layer is connected to the PMS coordination controller through LC-LC fiber jumper; the Gigabit aggregation switch of network A is connected to the longitudinal encryption device through network cable, and the longitudinal encryption device is connected to the Gigabit switch of network A through network cable; the Gigabit aggregation switch of network B is connected to another longitudinal encryption device through network cable, and the longitudinal encryption device is connected to the Gigabit switch of network B through network cable;

[0007] The Gigabit switch of network A is connected to the EMS monitoring server of network A and network B, and operation console A and operation console B respectively. The Gigabit switch of network B is connected to the EMS monitoring server of network A and network B, and operation console A and operation console B respectively. The Gigabit switch of network A and network B are also connected to the data communication gateway respectively.

[0008] The energy storage unit equipment also includes two longitudinal encryption devices and two photoelectric converters, and the energy storage unit equipment and the station control layer equipment both include an ODF optical fiber distribution frame;

[0009] The monitoring switches of network A and network B are respectively connected to the longitudinal encryption devices, which are respectively connected to the photoelectric converters, which are connected to the ODF fiber distribution frame of the energy storage unit by means of fiber jumper LC-ST; the control switch at the energy storage end is directly connected to the ODF fiber distribution frame of the energy storage unit by means of fiber jumper LC-ST; the ODF fiber distribution frame of the energy storage unit is connected to the ODF fiber distribution frame of the station control layer by means of optical fiber;

[0010] The ODF fiber distribution frame at the station control layer is connected to the A network Gigabit aggregation switch, the B network Gigabit aggregation switch and the station control layer control switch through LC-LC patch cords.

[0011] The energy storage unit equipment also includes a box transformer measurement and control device, which is connected to the A network monitoring switch and the B network monitoring switch respectively.

[0012] The beneficial effects of the utility model are as follows: the utility model divides the monitoring data into two sets of networks, A and B, for transmission and storage. The two sets of network data can back up each other, which can avoid data loss caused by transmission equipment failure. At the same time, the data transmitted by the two networks can be compared to detect whether the equipment has failed, which can greatly improve the stability of the energy storage power station operation and protect the security and reliability of network data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the energy storage power station monitoring system of the utility model. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further explained below in conjunction with the accompanying drawings.

[0015] like Figure 1As shown, a monitoring system for an energy storage power station of the utility model includes a station control layer device and an energy storage unit device. The station control layer device includes a station control layer control switch, a network A gigabit switch, a network B gigabit switch, a network A gigabit aggregation switch, a network B gigabit aggregation switch, a network A EMS monitoring server, a network B EMS monitoring server, an operation console A, an operation console B, a data communication gateway and a PMS coordination controller; the energy storage unit device includes a plurality of BMS battery management systems, a plurality of PCS converters, a network A monitoring switch, a network B monitoring switch and an energy storage end control switch;

[0016] The BMS battery management system is connected to the PCS converter via the Modbus TCP network. The BMS battery management system is connected to the A network monitoring switch and the B network monitoring switch via the IEC62850 network respectively. The PCS converter is connected to the A network monitoring switch and the B network monitoring switch via the IEC62850 network respectively. The PCS converter is connected to the energy storage end control switch via the IEC104 network. The A network monitoring switch and the B network monitoring switch respectively aggregate the monitoring data of the energy storage unit, and the energy storage end control switch aggregates the data of the PCS converter.

[0017] The monitoring switch (IEC61850 / IEC104) of network A, the monitoring switch (IEC61850 / IEC104) of network B and the control switch (GOOSE) of the energy storage end are respectively connected to the Gigabit aggregation switch (IEC61850 / IEC104) of network A, the Gigabit aggregation switch (IEC61850 / IEC104) of network B and the control switch (GOOSE) of the station control layer through optical cables; the control switch of the station control layer is connected to the PMS coordination controller (PCS-9567CP) in the form of LC-LC fiber jumper; the Gigabit aggregation switch of network A is connected to the longitudinal encryption device through a network cable, and the longitudinal encryption device is connected to the Gigabit switch (IEC61850 / IEC104) of network A through a network cable; the Gigabit aggregation switch of network B is connected to another longitudinal encryption device through a network cable, and the longitudinal encryption device is connected to the Gigabit switch (IEC61850 / IEC104) of network B through a network cable;

[0018] The Gigabit switch of network A is connected to the EMS monitoring server of network A and network B, and operation console A and operation console B respectively. The Gigabit switch of network B is connected to the EMS monitoring server of network A and network B, and operation console A and operation console B respectively. The Gigabit switch of network A and network B are also connected to the data communication gateway (PCS-9799M) respectively.

[0019] The PCS converter is PCS-9567-465kW: PCS (energy storage converter, English translation: Power Conversion System) can control the charging and discharging process of the battery, perform AC / DC conversion, and directly supply power to the AC load when there is no power grid. PCS consists of a DC / AC bidirectional converter, a control unit, etc. The PCS controller receives background control instructions through communication, and controls the converter to charge or discharge the battery according to the sign and size of the power instruction, thereby adjusting the active power and reactive power of the power grid. The PCS controller communicates with the BMS through the CAN interface to obtain the battery pack status information, and can realize protective charging and discharging of the battery to ensure safe battery operation.

[0020] The energy storage unit equipment also includes two longitudinal encryption devices and two photoelectric converters, and the energy storage unit equipment and the station control layer equipment both include an ODF optical fiber distribution frame;

[0021] The monitoring switches of network A and network B are respectively connected to the longitudinal encryption devices, which are respectively connected to the photoelectric converters, which are connected to the ODF fiber distribution frame of the energy storage unit by means of fiber jumper LC-ST; the control switch at the energy storage end is directly connected to the ODF fiber distribution frame of the energy storage unit by means of fiber jumper LC-ST; the ODF fiber distribution frame of the energy storage unit is connected to the ODF fiber distribution frame of the station control layer by means of optical fiber;

[0022] The ODF fiber distribution frame at the station control layer is connected to the A network Gigabit aggregation switch, the B network Gigabit aggregation switch and the station control layer control switch through LC-LC patch cords.

[0023] Vertical encryption: generally refers to the connection between the upper power dispatching center and the lower power dispatching center, and then the vertical encryption device is used to create a VPN tunnel to transmit real-time and non-real-time business data. Because once the business data is encrypted (there are two commonly used algorithms, RSA and SM2), hackers cannot crack it even if they obtain the message, because the encryption and decryption public and private keys at both ends of the tunnel are one-to-one corresponding, which ensures the relative security of the power network. Therefore, the actual physical item corresponding to the vertical encryption is the vertical encryption device, which is generally used more on the power plant side, photovoltaic power station side and wind farm side. Vertical encryption uses a hardware machine with an asymmetric encryption algorithm, which is an encryption placed between the network and the remote network node. It uses technical measures such as authentication, encryption, and access control to achieve secure transmission of power secondary system data and vertical boundary security protection. Vertical encryption mainly realizes the security, confidentiality and non-repudiation of distribution network automation services. Directly protect the distribution network terminal data and support multiple access methods such as serial port, network port, and GPRS wireless.

[0024] Photoelectric converter: Dual-fiber multimode high-performance 10 / 100Mbit adaptive optical transceiver (photoelectric converter), with address filtering, network segmentation and intelligent alarm functions, can improve network work efficiency and network operation reliability. It can achieve high-speed remote interconnection of computer data network without relay up to 5 kilometers. The product performance is stable and reliable, the design meets Ethernet standards, and has lightning protection measures. It is particularly suitable for various broadband data networks such as telecommunications, cable TV, railways, military, financial securities, customs, civil aviation, shipping, electricity, water conservancy and oil fields, and fields that require high-reliability data transmission or the establishment of IP data transmission private networks. It is the most ideal application equipment for broadband campus networks, broadband cable TV networks and intelligent broadband communities with fiber-to-the-building and fiber-to-the-home. It converts optical signals into electrical signals and electrical signals into optical signals.

[0025] ODF fiber distribution frame: ODF frame is ODF fiber distribution frame. It is the main equipment in current communication wiring equipment. It is mainly used for optical cable termination. The optical cable enters the base station through the wiring frame. The main function of ODF is to complete the termination (and fiber jumper) of each optical fiber in the optical cable one-to-one correspondence, which is convenient for the use of optical ports. There is only one optical path, so ODF is equivalent to a row of optical path outlets.

[0026] The energy storage unit equipment also includes a box transformer measurement and control device, which is connected to the A network monitoring switch and the B network monitoring switch respectively.

[0027] The utility model divides the monitoring data into layers, and divides them into network A and network B. Network A is composed of a network A gigabit switch, a network A gigabit aggregation switch, and a network A monitoring switch. Network B is composed of a network B monitoring switch, a network B gigabit switch, and a network B gigabit aggregation switch. The data transmission between the two networks is independent of each other, and the two network data can be backed up to each other. At the same time, two monitoring servers, namely, the network A EMS monitoring server and the network B EMS monitoring server, are provided at the station control layer. Both monitoring servers store the data of the network A and the network B, and the data of the two monitoring servers can be backed up to each other. The operating console A and the operating console B are also mutually backed up, which can increase the fault tolerance rate. The use of two sets of data transmission systems can avoid the situation where data loss due to equipment failure occurs, can greatly improve the stability of the operation of the energy storage power station, and protect the security of network data transmission. Only one set of control transmission equipment is needed to control the switch to transmit control instructions, which can save equipment.

[0028] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations based on the technical inspirations disclosed in the present invention without departing from the essence of the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A monitoring system for an energy storage power station, characterized in that: It includes station control layer equipment and energy storage unit equipment. The station control layer equipment includes station control layer control switch, A network gigabit switch, B network gigabit switch, A network gigabit aggregation switch, B network gigabit aggregation switch, A network EMS monitoring server, B network EMS monitoring server, operation console A, operation console B, data communication gateway and PMS coordination controller; the energy storage unit equipment includes multiple BMS battery management systems, multiple PCS converters, A network monitoring switches, B network monitoring switches and energy storage end control switches; The BMS battery management system is connected to the PCS converter via the Modbus TCP network. The BMS battery management system is connected to the A network monitoring switch and the B network monitoring switch via the IEC62850 network. The PCS converter is connected to the A network monitoring switch and the B network monitoring switch via the IEC62850 network. The PCS converter is connected to the energy storage end control switch via the IEC104 network. The monitoring switch of network A, the monitoring switch of network B and the control switch of energy storage end are respectively connected to the Gigabit aggregation switch of network A, the Gigabit aggregation switch of network B and the control switch of station control layer through optical cables; the control switch of station control layer is connected to the PMS coordination controller through LC-LC fiber jumper; the Gigabit aggregation switch of network A is connected to the longitudinal encryption device through network cable, and the longitudinal encryption device is connected to the Gigabit switch of network A through network cable; the Gigabit aggregation switch of network B is connected to another longitudinal encryption device through network cable, and the longitudinal encryption device is connected to the Gigabit switch of network B through network cable; The Gigabit switch of network A is connected to the EMS monitoring server of network A and network B, and operation console A and operation console B respectively. The Gigabit switch of network B is connected to the EMS monitoring server of network A and network B, and operation console A and operation console B respectively. The Gigabit switch of network A and network B are also connected to the data communication gateway respectively.

2. The energy storage power station monitoring system according to claim 1, characterized in that: The energy storage unit equipment also includes two longitudinal encryption devices and two photoelectric converters, and the energy storage unit equipment and the station control layer equipment both include an ODF optical fiber distribution frame; The monitoring switches of network A and network B are respectively connected to the longitudinal encryption devices, which are respectively connected to the photoelectric converters, which are connected to the ODF fiber distribution frame of the energy storage unit by means of fiber jumper LC-ST; the control switch at the energy storage end is directly connected to the ODF fiber distribution frame of the energy storage unit by means of fiber jumper LC-ST; the ODF fiber distribution frame of the energy storage unit is connected to the ODF fiber distribution frame of the station control layer by means of optical fiber; The ODF fiber distribution frame at the station control layer is connected to the A network Gigabit aggregation switch, the B network Gigabit aggregation switch and the station control layer control switch through LC-LC patch cords.

3. The energy storage power station monitoring system according to claim 1, characterized in that: The energy storage unit equipment also includes a box transformer measurement and control device, which is connected to the A network monitoring switch and the B network monitoring switch respectively.

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