Centralized control center power optical fiber data communication architecture based on power communication network

Abstract

A centralized control center power optical fiber data communication architecture based on a power communication network comprises a centralized control center, the centralized control center is in communication connection with a provincial dispatching center, and the provincial dispatching center is in communication connection with a local dispatching center. The terrestrial-level dispatching center is in communication connection with the III-level communication network of the transformer substation of more than 220 kilovolts and the IV-level communication network of the station of more than 35 kilovolts; the system further comprises optical transmission equipment of each new energy station, and the optical transmission equipment of each new energy station is directly accessed to the III-level communication network or the IV-level communication network through a special optical cable. The utility model provides a scheme of sharing an electric power communication private network, through renting part of resources of the electric power communication private network, electric power private network communication between a centralized control center and new energy plant stations in various regions is realized, and remote centralized control operation of the centralized control center is completed.

Description

Technical Field

[0001] The utility model relates to an electric power optical fiber data communication architecture of a centralized control center based on an electric power communication network. Background Art

[0002] With the rapid development of my country's economy and society, the status of renewable energy power generation in my country's power system has been significantly improved, the installed capacity has increased year by year, and renewable energy power generation has entered a period of vigorous development.

[0003] In this context, major power generation companies have invested in the construction of new energy power plants in the province. In order to achieve the intensive and digitalization of their business, many power generation companies plan to build centralized control centers to uniformly collect, store, calculate and monitor production information such as the substations, wind turbine monitoring systems, photovoltaic monitoring systems, etc. of each wind farm and photovoltaic power station under their jurisdiction, so as to realize remote centralized control and operation of new energy plants.

[0004] Currently, all major power generation companies rent channels from public grid operators to transmit information about new energy plants and stations. However, due to the security and stability of the operator's channels, some businesses are not suitable to be conducted on the public network, and remote centralized control operations are also restricted. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in combination with the remote centralized control needs of the centralized control center of the power generation enterprise and the current operation status of the power communication transmission network, a plan for constructing a power optical fiber data channel of the centralized control center based on the power communication network is provided to address the safety and stability problems existing in the existing remote centralized control operation.

[0006] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0007] A power optical fiber data communication architecture of a centralized control center based on a power communication network, including a centralized control center, wherein the centralized control center is communicatively connected to a provincial dispatching center, the provincial dispatching center is communicatively connected to a prefectural dispatching center, the prefectural dispatching center is communicatively connected to a level III communication network of a substation above 220 kV and a level IV communication network of a station above 35 kV; and also includes optical transmission equipment of each new energy station, wherein the optical transmission equipment of each new energy station is directly connected to the level III communication network or the level IV communication network via a dedicated optical cable.

[0008] The optical transmission equipment in the new energy station includes wind turbines / inverters, AGC / AVC equipment and electric energy metering equipment.

[0009] The centralized control center is equipped with switches, as well as host reinforcement equipment, operation and maintenance bastion machines, intrusion detection devices and network security monitoring devices that are connected to the switches for communication. The centralized control center is connected to the power communication network through a data router, and the data router is also connected to a gigabit vertical encryption device.

[0010] The new energy station is equipped with a collection server connected to the optical transmission equipment, which is connected to the forwarding server in communication, and the forwarding server is connected to the power communication network through the security protection equipment. The security protection equipment here includes a longitudinal encryption device, a forward isolation device and a reverse isolation device connected to the forwarding server, and finally connected to the power communication network through a router.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model proposes a solution for sharing a private power communication network. By leasing part of the resources of the private power communication network, the private power network communication between the centralized control center and new energy plants in various regions is realized, thereby completing the remote centralized control operation of the centralized control center. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A topological diagram of the communication architecture of the utility model;

[0013] Figure 2 This is the topology diagram of the security system. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Take the Henan power system as an example.

[0016] At present, Henan power transmission network mainly adopts SDH (Synchronous Digital Hierarchy) technology system, which is dedicated to special network. SDH has high reliability, low latency, flexible business dispatching, and low bandwidth utilization, which is suitable for production dispatching services such as relay protection and dispatching automation. Considering the reliability and convenience of business access and the small-grained production business such as 2M~10M transmission business, it is safer and more convenient to use the power communication private network, so the Henan provincial and ground network SDH network can be used for carrying.

[0017] Therefore, the scheme of the utility model is as follows:

[0018] like Figure 1As shown, a power optical fiber data communication architecture of a centralized control center based on a power communication network includes a centralized control center, the centralized control center is communicatively connected to a provincial dispatching center, the provincial dispatching center is communicatively connected to a prefectural dispatching center, the prefectural dispatching center is communicatively connected to a level III communication network of a substation above 220 kV and a level IV communication network of a station above 35 kV; and also includes optical transmission equipment of each new energy station, the optical transmission equipment of each new energy station is directly connected to the level III communication network or the level IV communication network through a dedicated optical cable.

[0019] The optical transmission equipment in the above-mentioned new energy station includes wind turbines / inverters, AGC / AVC equipment, electric energy metering equipment, etc.

[0020] It should be noted that the electric power communication network that has been built in Henan covers the level III communication network of provincial dispatching centers, prefectural dispatching centers and substations above 220 kV, with a core bandwidth of 10G and an access bandwidth of 2.5G; all cities in Henan have built a level IV communication network covering sites above 35 kV, with a core bandwidth of 10G / 2.5G and an access layer bandwidth of 622M / 155M. The optical transmission equipment of each station will be directly connected to the Henan level III or IV network through a dedicated optical cable. The Huawei and ECI dual-set networks of the Henan Electric Power Communication Network backbone are maintained by Henan Electric Power Company, with stable operation and sufficient bandwidth to meet the access bandwidth requirements of each wind farm.

[0021] The power grid communication network is mainly used to carry various production and management services such as power dispatching telephones, power grid automation, relay protection, and safety automatic devices. Its primary goal is to ensure the safe production of the power grid. Therefore, when power generation companies rent power-specific network communication resources, they need to achieve physical isolation from the power grid business and cannot affect the safe operation of the power grid; secondly, channel bandwidth allocation must give priority to ensuring the production needs of the power grid and cannot affect the operation of various power grid businesses. Therefore, the utility model needs to be divided into two parts: the centralized control center communication access system and the centralized control center security protection system.

[0022] (1) Communication access system solution

[0023] A set of provincial network SDH optical transmission equipment is configured for the centralized control center; an SDH Ethernet board is configured for each new energy station for service access. After the service enters the opposite system station equipment from the wind farm booster station side, it can enter the ground network SDH network. If the system station optical terminal equipment is a ground network reused equipment, the ground network reused equipment and the newly configured ground network equipment are connected through the 155M optical port to realize service conversion access.

[0024] At the 500kV sites in the affected areas, 2.5G optical paths from the ground network SDH equipment to the provincial network SDH equipment are opened to realize service transfer. In the provincial network SDH network, the service can be transmitted to the provincial network SDH equipment end configured by the centralized control center to complete the overall transmission link process. The communication channel organization topology diagram can be seen in the attached Figure 1 .

[0025] (2) Centralized control center security protection system solution

[0026] The dispatching and management methods of each renewable energy power plant remain unchanged and are managed by Henan Provincial Dispatch and the local dispatching of the regions where the renewable energy power plants are located. The centralized control center collects data from the substation monitoring system, wind turbine monitoring system, box-type transformer monitoring system, AGC / AVC, PMU (if any), etc., and can control wind turbines and box-type transformers. The centralized control center must comply with the dispatching instructions of the dispatching management agency.

[0027] The centralized control center is equipped with switches, as well as host reinforcement equipment, operation and maintenance bastion machines, intrusion detection devices and network security monitoring devices that are connected to the switches for communication. The centralized control center is connected to the power communication network through a data router, and the data router is also connected to a gigabit vertical encryption device.

[0028] The new energy station is equipped with a collection server connected to the optical transmission equipment, which is connected to the forwarding server in communication, and the forwarding server is connected to the power communication network through the security protection equipment. The security protection equipment here includes a longitudinal encryption device, a forward isolation device and a reverse isolation device connected to the forwarding server, and finally connected to the power communication network through a router.

[0029] It should be noted that the above-mentioned switches, host reinforcement equipment, operation and maintenance bastion machines, intrusion detection devices, network security monitoring devices, gigabit vertical encryption devices, collection servers, forwarding servers, vertical encryption devices, forward isolation devices and reverse isolation devices are all existing equipment, and their working principles are all existing technologies.

[0030] The utility model adopts existing communication equipment and designs a communication architecture for how new energy stations are connected to the power communication network. The communication architecture does not involve software algorithms. It only realizes the power-specific network communication between the centralized control center and new energy plants in various regions by building a hardware platform, and completes the remote centralized control operation of the centralized control center.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A power optical fiber data communication architecture for a centralized control center based on a power communication network, characterized by: It includes a centralized control center, which is communicatively connected to a provincial dispatching center, which is communicatively connected to a prefectural dispatching center, which is communicatively connected to a Level III communication network of a substation above 220 kV and a Level IV communication network of a station above 35 kV; it also includes optical transmission equipment of each new energy station, which is directly connected to a Level III communication network or a Level IV communication network via a dedicated optical cable.

2. According to claim 1, a centralized control center power optical fiber data communication architecture based on a power communication network is characterized by: The optical transmission equipment in the new energy station includes wind turbines / inverters, AGC / AVC equipment and electric energy metering equipment.

3. According to claim 1, a centralized control center power optical fiber data communication architecture based on a power communication network is characterized by: The centralized control center is equipped with switches, as well as host reinforcement equipment, operation and maintenance bastion machines, intrusion detection devices and network security monitoring devices that are connected to the switches for communication. The centralized control center is connected to the power communication network through a data router, and the data router is also connected to a gigabit vertical encryption device.

4. According to claim 1, a centralized control center power optical fiber data communication architecture based on a power communication network is characterized by: The new energy station is provided with a collection server connected to the optical transmission equipment. The collection server is connected to the forwarding server in communication. The forwarding server is connected to the power communication network through the safety protection equipment.

5. According to claim 4, a centralized control center power optical fiber data communication architecture based on a power communication network is characterized by: The safety protection equipment includes a longitudinal encryption device, a forward isolation device and a reverse isolation device connected to a forwarding server, and finally accesses the power communication network through a router.

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