Master control system of two-loop DC power transmission system and configuration method

Abstract

The invention discloses a master control system of a two-loop DC power transmission system and a configuration method. A sending end or a receiving end of a two-loop direct current are arranged at thesame converter station, and the two-loop direct current is designed and runs independently due to factors such as stage construction and attachment to different industries; and since the two-loop direct current shares the same AC bus, and synergic control is needed on aspects of active power and reactive power. The invention proposes a two-loop DC master control system. The master control systemcomprises two parts of a stable control host and a synergic control host, wherein the stable control host and the synergic control host are independent to each other, signal interaction with a two-loop DC control system is performed, a two-loop DC active power synergic control module and a system safe and stable control module are arranged in the stable control host, and a two-loop DC reactive power synergic control module and an additive control synergic control module are arranged in the synergic control host. By reasonable host arrangement and functional allocation, and the two-loop DC synergic control can be achieved when the two-loop DC sending end or the receiving end are arranged at the same converter station.

Description

technical field [0001] The invention belongs to the field of high-voltage direct current transmission, and in particular relates to a main control system and a configuration method of a two-circuit direct current transmission system. Background technique [0002] Limited by the current single-circuit DC transmission capacity and receiving capacity, power in energy-concentrated areas needs to be transmitted outwards using two or more circuits of DC. Similarly, power load centers sometimes need to transmit power through multiple DC circuits. In order to save floor space, sometimes the sending-end or receiving-end converter stations of two circuits of DC are designed together. In order to ensure the reasonable, economical, safe and stable operation of the two-circuit DC, the coordinated control of active power and reactive power is required for the two-circuit DC. [0003] When the two DC circuits belong to the same owner and are jointly operated and managed, a dual-circuit c...

AI Technical Summary

Problems solved by technology

However, for the two-circuit DC with independent operation and management, it is difficult to implement the above-mentioned scheme due to the different technical schemes of the secondary control and protection system and the separate management of the primary equipment.

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